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A1-8900, A1-9900, A1-9900s Svvitches 
Hardvvare Reference 








AT-8948 
AT-9924T 
AT-9924SP 
AT-9924T/4SP 
AT-9924Ts 


MAVE Alligd Ielesyn 





Hardware Reference for AT-8900, AT-9900 and AT-9900s Series Switches 
Document Number C613-03092-00 REV C 


© 2003-2005 Allied Telesyn Inc. All rights reserved. No part of this publication may be 
reproduced without prior written permission from Allied Telesyn Inc. 


Allied Telesyn Inc. reserves the right to change specifications and other information in 
this document without prior written notice. The information provided herein is subject 
to change without notice. In no event shall Allied Telesyn Inc. be liable for any 
incidental, special, indirect, or consequential damages whatsoever, including but not 
limited to lost profits, arising out of or related to this manual or the information 
contained herein, even if Allied Telesyn Inc. has been advised of, known, or should have 
known, the possibility of such damages. 


All company names, logos, and product designs that are trademarks or registered 
trademarks are the property of their respective owners. 


Hardvvare Reference 


Softvvare Release 3.0.2 
C613-03092-00 REV C 


1 

Contents 
Models Covered by this DOCUmMEent ......................uu2ueo..uuaaeavs an aladanai ana linia aa 3 
Why You Should Read This DOCUMEN Eril motes 3 
Hardware OvervieW oo. cccccccccccecccc cece cee eeee eee cece een eeee ee eeeeeeeeeeedeeeeeuneseeeaeeeeeneeeeeen ees 4 
DIMENSION eana italianes ic ant 4 
IOGA CIS VS ICT acciones ane a eaer eaa aaa 4 
ASVACRCOROUSSET EL DOR ua Bea tecles ent lesa ts 4 
AT-8900 Series SMC eco ae Ei un ao mida 5 
Environmental conditons sinisi di 5 
REGUIALORY SLANG ANOS: ieimmetmstacot atesa mi ies mecenes tt Srs Gandia 5 
SMI CC CO Ec le clos g cen aco ie ge 5 
PROCESSING EO IES et ee tes its entes 5 
Optional IPv6 accelerator Card .................o.o.oooeooouoeeueounen nal een lada L nan 5 
ACS OE QUE eeeatetecea te eta edad eetateitete ie die 6 
A 9900: 56165 SIN CN testes tadoc teues d ua 7 
ENVIORME ta LCONCIO NS Caleta detenen 7 
Regulatory standards sentenciat i Gomes 7 
SWIICNING COTE susieina reiasa a a e EEEL a ARRE 7 
Processing COG: ean citades tec ce es Gay / 
Network processor accelerator card .......ceccccececeeceeeeseeeeeeeeeeseeeeseeeseeaeees 7 
AFI92 4TA SP mMOdEl eee 8 
AT99247 Model see a a E E 8 
PTE OO ZA SP MOCel cast a aie acts accede te Na ee es 8 
AT-9900s Series SWiItCh sos dhe tinerand ccs ate ameadelh Anuadeactadaeon oda sin dae Goucnagnatacnndeeit 9 
Environmental conditions ees a oed ot 9 
REGUIALORY STANCGNOS: ‘ntcsncdoitatamnderes acon Mind tends shecucaeiattndnton ia on ais 9 
SMI CLC OE ee Carentan ie to sec a co lt uses 9 
PROCES SUNG COC eta emet ea tat cc entes 9 
A 292405 MOOC El a N 9 
SUVINC HINGED eertes El teiotentaeeemecest der roteetegigretetitacudec  motatzei. Ereraetatis sabia gte emet te 10 
SR DOL ES ase tetegslcengnò sones Domdan es Et ambcie tua midó 10 
RAS POTE LEDS nerea oa a a la st etat cedia 10 
EC DOR LE DS aiia R eee ie iatiai ee! 11 
SY Se BS tae ta sa cir ttle E ne tee eae es 11 
Using: Online: DOCUMEN AMON i. ceteris cadea bata wacu talented dencce estatges: 12 
Using AT-TFTP SE Eli tiu discoteca ectiècteci 13 
Using Windows Terminal and HyperTerminal ............cccccccceccceesseeceeeesseeeeeneeeeees 14 
How the Switch Starts UP ancsgcc Seco deccte dod cteauie tated adds AiG atinnd Micwianadlsiaiaddedenuiadon’, 17 
Al-S8900 and AlE9900 SWILCNES: wsicccivcutvedotisntcussaweavatidarts dati solebiett sasvedeusucets 17 
FOC Wl OU ee cmtgetet treta ar Dreta Ed atent dte mitat ege ec Dit eres 17 
QUEMICOS a Si Edo 17 
Regular OUTOUT 5..caSs cence iotictarnitahinteiucias EA 18 
D/DES ORIMESSQ UES Letra a a 18 
AlliedWare messages oo... ccececcc cece cccecee ee ceceeee ee eeeeeseeeeeeeeeeeeeeeeuaeeeeeeanaes 18 
A 99005 SIC ES ee de 20 
SCs Og tec ras aa ee ten faye Be ets ie tt ty A Ae ed tt tae ate 20 
DOTS tect a re eh 20 
REGU OU ti a Aa 21 
PAA CK OULD UE ccc artietiiae ouch oe alee iad ico Road ceca aula onl Aerio 21 
Bootloader MESSAGES ........ cece ccc cceecccceeeeecceeee ee eecceuseeeeeeeaeeeseesaneeeeeuaeneees 22 
AMCONARE MES SC OES: etat asi sets a 23 
SI OS ont tastos Oro beta so eee ese retenen eect eee 26 
Approved SFP transceivers ......cccccccccccceccccee cece ee eceeeeceeeeeeeeeeeaeeeeeaaeeeeaeeseenaes 26 
Types of SEP ThaNSCCIVENS vai iccvasichacexadesianudmctends hae aha WaanddhaenaencAteeabatoddeardotatds 26 
To insert or remove an SFP transceiver ou... cece cccecccseecceeeceeesceceeeeeseeeeeenes 27 


AT-8900, AT-9900, AT-9900s Series Switches 


Managemen Oe ce acestere oes teases cee cease meatier aeaenponenenens saan aeuacenoue: 28 
RS-232 Terminal POrmAS YNO): sasccccecersestccvertensnchebaddeasactarias techeddadtsa<dasatecta 28 
Out-of-Band Ethernet Management Port ...........cccccccceceecccceeeeeeeeeeueeeeeeaanaes 28 

CAO OS tata a eae ath cae et ark a eens at retreated eat Aan et metals 29 
RS-232 Terminal and Modem Cables ............cccccccccc ccc ecccce ee ceeseeeeeeueeeeeeneeees 29 

RJ-45 to DBO female terminal Cable ........ cece cece ecccee ee eeeeeeeeeenaes 29 
RJ-45 to DBO male MOdeM Cable 00.2... cc cece eccc eee ecce ee eeeeaeeeenaes 30 
Cables for RJ-45 Ethernet LAN Interfaces 2.0... cccccccceecceeeeeeeeeeeeeneeeeeens 30 
PHSASSIOM MIG GINS: dasiec cba tinet saaacaceanaiuderteacseesee seanhausmeaiaaneucedeanoneacaunaeanie 30 
1OOOBASE straight-through Cable oo... ccc cece cee ccceeeeeeeeeeeeeeeseeaanaes 31 
TOOOBAS E+ ClOSSOV ICAO feces cetera acre ere eat ia etal 31 
Cable Gudenes enire R a ct èsel 31 
Troubleshooting Cables tala detingut citem 32 
CAO OOS ath haat eaten aia iad Mee te cea ete eee ae 32 
Capledleng S ns an a 32 

Power Supply Units (PSUS) te es DE alii 33 
Hawar OVEN cegin Ri 33 
Apbroved PSUS and FOM eecnccescxcucnde its aes adi adhyhicex aN acnde apace ite dee temes guies 34 
LEEDS SOE Ue SU) thatched ana acc an lca ied ete és 34 

IPV6 Accelerator Card 20.0... cccccccccccccenccceneececeecceeeeececesneeceaceeesseeeeeseeeeeeeeeeaaes 34 
FIOWY TG Cal WV OEKS: pues cie tes 34 
Verifying installation “case cacietasexdtanceeecacienetacat eines diese Saanie maia lacedaktnsamntuceeiantst 34 
Displaying information ADOUL TNE Card sccsinveseveo oer csiiseres vwssunkiedelcsthcevesta: 36 

COR OD (OD ta See tetes team a E 36 
Conmpaeirlas Candela ee et ES 36 

Approved CFlash Card ............cccccccccccecesceceecceececeeeseseeseeeceeeeceeeeeeeeaaas 36 
Insertiàciand: emovinega CFIasi Card. sesmtusssmttacs teniment todas 37 
Displaying data about a CFlash card ............ssssiusssssiessrrnernrrrnssrrrerrrrnns 37 
singa CHATI a a e AR 37 
Dual In-line Memory Module (DIMM) oosessnsosseessnessissssrrerrrresrrrsrrrrsrrrerrrreen 38 
AT-9924T and AT-99245SP switches 2.0.0... cece cee ccce ae eceee ne eeeeeaeeeeanes 38 
AO AA SP SNC ea tea a E T 38 
A 0902405 SUC asil ci RGE 38 
Verifying DIMM installation ......................o.o.ooueeooouuenalaii en lala nana 38 

E XD SON OO NS: aretocee a ae OA DS 39 
SE OD ce cate alacant tn Sob oni ic re asin eS eee rch Sates ea ies ee cane ae 39 
TRDOTE a E E as es acc ones R eco ee 40 
ped SPON aire N R E AT 40 

TeSt FACTI etat tot tenia Ds lent etat 40 
Testing Ethernet LAN Ports ............ccccccccccsceeccecesseceeenseeeeeseeeeeeesaaeeeeeenaeeees 40 

PAI NOS UGS: ao ecae a ancaces so iat oneece wanie aac ad setae sananuasa temas aa ean eamaaaieriasanieeetiaeenete 41 
Enabling diagnostics mode ....................eeeeu.ovuenensLainn ava venen iaia iaia La 41 
Running a: diagnostic DrOgran estimes is eo al gel eResemo ei: 42 

MOU BIESHO OU G) siinide aS i ieton 43 
What to Check MSE cosie a SN 43 
L/A LED on a port is Off ceeleetitantzemimetteciomttitamtmemeutiantmeteimés 43 
Power ED SCOR netedat E te sets calen 44 
EAUILE DS Oteteea dt A tesa tees NA attest ittaitaecet ana 44 
POCO al ES OUICES: cen EN 44 

For More Information ces. ci ctcaetsteoscebestectncesiennctetGant ctebtideasaciGeesatechttineaeteManeicts 45 
DOCUMEN SIS ascens edai Die pac eaten eke 45 
COCO US Sacttd. cit tiara alata causa EE AAN 45 


Software Release 3.0.2 
C613-03092-00 REV C 


Hardvvare Reference 


Softvvare Release 3.0.2 
C613-03092-00 REV C 


Models Covered by this Document 


This Hardvvare Reference includes information on these models: 


AT-8948 

A1-9924T /4SP 

A1-9924T 

AT-99245P 

AT-9924Ts 

AT-PWR01 (either AC or DC power supply unit) 
AT-PWRO2 (AC power supply unit only) 
AT-FANO1 (fan-only module) 


Why You Should Read This Document 


Use this document to familiarise yourself with the AT-8900, AT-9900, and 
AT-9900s Series switches and hardware features, including power supply units 
(PSUs). This reference can also help you with installation and maintenance. 
However, refer to the Software Reference for information about software 
configuration and installation procedures. 


Keep this document or the CD-ROM in a safe place; it will be helpful if you 
purchase expansion options for the switch. 


Dimensions 


Mounting system 


Asynchronous 
serial port 


AT-8900, AT-9900, AT-9900s Series Switches 


Hardware Overview 


This section provides details about the physical characteristics of the following: 


AT-8900 Series Switch 

e AT-8948 model 
AT-9900 Series Switch 

e AT-9924T/4SP model 
e AT-9924T model 

e AT-9924SP model 
AT-9900s Series Switch 

e AT-9924Ts model 


The AT-8900, AT-9900, and AT-9900s Series switches have the following 
common traits: 


Height: 44.5mm, plus 5.1mm if the rubber feet are used 
Width: 440mm, excluding rack-mounting brackets 
Depth: 440mm, excluding PSU handles 


Weight: Not more than 8.5 kg, which includes one power supply unit 
(PSU) and one fan-only module (FOM) 


1U rack mounting; 19-inch rack-mount kit as standard 


Up to 115kbps 
Universal Asynchronous Receiver Transmitter (UART) 
Standard RJ-45 connector 


Hardware-flow control 


Software Release 3.0.2 
C613-03092-00 REV C 


Hardvvare Reference 


AT-8900 Series Switch 


The AT-8948 switch is the sole model in the AI-8900 Series and meets the 
exceptionally high performance demands of high-end applications. It delivers 
Wire-speed switching performance in a robust 1U rack mount platform. 


Environmental gs 


conditions = 


Regulatory m 
standards 


Switching core m 


Processing core m 


Optional IPv6 a 
accelerator card 


Software Release 3.0.2 
C613-03092-00 REV C 


Operating temperature range: 0°C to 50°C (32 to 122°F) 

Storage temperature range: -25°C to 70°C (-13 to 158°F) 

Relative humidity range for operation: 5 to 80% non-condensing 
Relative humidity range for storage: 5 to 95% non-condensing 


Operational altitude: 3,050 metres maximum (10,000 feet) 


EMC: EN55022 class A, FCC class A, and VCCI class A 


Immunity: EN55024, EN61000-3 levels 2 (Harmonics), and 3 (Flicker)— 
AC models only 


Safety: UL60950-1, CAN /CSA-C22.2 No. 60950-1-03, EN60950, 
AS/NZS60950, and EN60825-1 


Certification: UL, cUL, and TUV 


Application-Specific Integrated Circuit (ASIC) switch chip 
Non-blocking Layer 2 and Layer 3 IP switching 

256K IPv4 address table 

4K multicast table 

4K logical Layer 3 interfaces 

Shared 32 Mbyte DDR-SDRAM packet buffer 


350 MHz RISC Processor 


128 MBytes of Synchronous DRAM, expandable to 256 MBytes or 
512 MBytes with DIMM 


32MBytes of fixed flash 


CompactFlash slot for hot-swappable expansion of flash memory up to 
128 MBytes 


512 kBytes of SRAM 
32/66 PCI bus for 32-bit /33MHz 
Silicon ID chip storing serial number, board ID, and MAC address 


Slot for network processor accelerator card that provides accelerated IPv6 
unicast and multicast routing in hardware 
e 4K multicast table 


e 1000 accelerator hardware filters 


e 128MBytes Synchronous DRAM giving 64K IPv6 routes 


6 AT-8900, AT-9900, AT-9900s Series Switches 


AT-8948 model Key features are: 
m Autonegotiating multi-layer gigabit switch 


m 48 10BASE-T/100Base-TX ports (RJ-45 connectors), auto MDI/MDI-X, full 
or half duplex 


m 4-port 1000BASE-X SFP uplink sockets, full duplex 
m Hot-swappable, load sharing PSUs 
m Optional AT-ACC01 network processor accelerator card 


AT-8948 front panel 


ee = = = = = = = = | 
|i a a a a a a a a | a a a a a a E || o a a a a E 
M menes | 











Software Release 3.0.2 
C613-03092-00 REV C 


Hardvvare Reference 


Environmental 
conditions 


Regulatory 
standards 


Svvitching core 


Processing core 


Network processor 
accelerator card 


Software Release 3.0.2 
C613-03092-00 REV C 


AT-9900 Series Switch 


AT-9900 Series switches are advanced gigabit Ethernet multi-layer switches, 
perfect for the high-density rack environment where space is at a premium. 


Operating temperature range: 0°C to 50°C (32°F to 104°F) 

Storage temperature range: -25°C to 70°C (-13°F to 158°F) 

Relative humidity range for operation: 5% to 80% non-condensing 
Relative humidity range for storage: 5% to 95% non-condensing 


Operational altitude: 3,050 metres maximum (10,000 feet) 


EMC: EN55022 class A, FCC class A, and VCCI class A. 


Immunity: EN55024, EN61000-3, levels 2 (Harmonics), and 3 (Flicker)— 
AC models only 


Safety: UL60950-1, CAN /CSA-C22.2 No. 60950-1-03, EN60950-1, 
AS/NZS60950, and EN60825-1 


Certification: UL, cUL, and TUV 


Application-Specific Integrated Circuit (ASIC) switch chip 
High performance IPv4 switching 

AT-9924T and AT-9924SP 

e 64MByte packet buffer memory 

AT-9924T/4SP 

e High performance IPv6 switching 

e 160MByte packet buffer memory 


400 MHz RISC Processor 
16MBytes of fixed flash with provision for an additional 16 MBytes 


CompactFlash card slot on the front panel for hot-swappable expansion of 
flash memory up to 128MBytes 


512kBytes of NVSRAM 


Silicon ID chip storing serial number, board ID, MAC address, and 
hardware revision level 


AT-9924T and AT-9924SP 


e 128MBytes of Synchronous DRAM, expandable to 256 MBytes or 
512 MBytes with DIMM 


AT-9924T/4SP 


e 256MBytes of Synchronous DRAM, expandable to 512 MBytes with 
DIMM 


e 512MBytes of Synchronous DRAM is required if AT-ACCO1 network 
processor accelerator card fitted 


AT-9924T/4SP only 


Optional network processor accelerator card provides accelerated IPv6 
unicast and multicast routing in hardware 


512 MBytes of Synchronous DRAM required, giving 64K IPv6 static routes 
4K multicast table 


1000 accelerator hardware filters 


8 AT-8900, AT-9900, AT-9900s Series Switches 


AT-9924T/4SP model Key features are: 
m Autonegotiating, multi-layer gigabit switch 
m 24 10BASE-T/100BASE-TX/1000BASE-T ports (RJ-45 connectors) 
m 4Small Form Factor Pluggable (SFP) ports 
= Hot-swappable, load sharing PSUs 
m Optional AT-ACC01 network processor accelerator card 


AT-9924T/4SP front panel 





There are 24 ports operational at one time. The RJ-45 ports 1 to 4 use the same 
physical interface as the SFP ports 1 to 4. When an SFP is inserted into an SFP 
port, the corresponding RJ-45 port is disabled. For example, if an SFP is 
inserted in SFP port 1, then RJ-45 port 1 is disabled. When the SFP is removed 
from port 1, the RJ-45 port 1 is again operational. All other RJ-45 ports function 
normally. 


AT-9924T model Key features are: 
m Autonegotiating, multi-layer gigabit switch 
m 24 10BASE-T/100BASE-TX/1000BASE-T ports (RJ-45 connectors) 
m 4Small Form Factor Pluggable (SFP) ports 
= Hot-swappable, load sharing PSUs 


AT-9924T front panel 





There can be 24 ports operational at one time. The RJ-45 ports 1 to 4 use the 
same physical interface as the SFP ports 1 to 4. When an SFP is inserted into an 
SFP port, the corresponding RJ-45 port is disabled. For example, if an SFP is 
inserted in SFP port 1 then RJ-45 port 1 is disabled. When the SFP is removed 
from port 1, the RJ-45 port 1 is again operational. All other RJ-45 ports function 
normally. 


AT-9924SP model Key features are: 
m  Autonegotiating, multi-layer gigabit switch 
m 24 Small Form Factor Pluggable (SFP) ports 
m Hot-swappable, load sharing PSUs 


AT-9924SP front panel 





Software Release 3.0.2 
C613-03092-00 REV C 


Hardvvare Reference 


Environmental 
conditions 


Regulatory 
standards 


Svvitching core 


Processing core 


AT-9924Ts model 


AT-9924Ts front panel 


AT-9900s Series Switch 


The AT-9900s Series switch is a gigabit link aggregation switch that operates 
with other switches that have 10Mb/100Mb/1Gb/10Gb Ethernet ports. This 
switch can act as a gigabit server backbone or pass aggregated traffic over its 
gigabit ports. The switch can also aggregate gigabit desktop user connections 
and pass traffic to other 10 Gigabit Ethernet equipment. 


Operating temperature range: 0°C to 40°C (32°F to 104°F) 

Storage temperature range: -25°C to 70°C (-13°F to 158°F) 

Relative humidity range for operation: 5% to 80% non-condensing 
Relative humidity range for storage: 5% to 95% non-condensing 


Operational altitude: 3,050 metres maximum (10,000 feet) 


EMC: EN55022 class A, FCC class A, and VCCI class A. 
EN61000-3 levels 2 (Harmonics), and 3 (Flicker)—AC models only 
Immunity: EN55024 


Safety: UL60950-1, CAN/CSA-C22.2 NO. 60950-1-03, EN60950-1, 
AS/NZS60950, and EN60825-1 


Certification: UL, cUL, and TUV 


Application-Specific Integrated Circuit (ASIC) switch chip 
High performance IPv4 switching 
128 MByte packet buffer memory 


667 MHz RISC Processor 
32 MBytes of non-expandable fixed flash 


512 MBytes Double Data Rate (DDR) Synchronous DRAM, expandable to 
1 gigabyte 


512kBytes of NVSRAM 


The unmatched flexibility of the AT-9924Ts switch tailors solutions to a wide 
range of networking needs. It is currently the sole model in the AT-9900s Series. 


Key features are: 


Autonegotiating, multi-layer gigabit switch 
24 10/100/1000BASE-TX ports (RJ-45 connectors) 
Out-of-band 10/100/1000BASE-T Ethernet management port 


Two high-speed 20Gbps bays to support combinations of expansion 
modules 


Supports dual, hot-swappable, load sharing PSUs (AT-PWR0O1)—a second 
PSU is optional 


Optional 10GbE expansion module 
Optional 12-port SFP expansion module 
Optional 12-port RJ-45 expansion module 











Software Release 3.0.2 
C613-03092-00 REV C 


10 


SFP port LEDs 


RJ-45 port LEDs 


Switch LEDs 


AT-8900, AT-9900, AT-9900s Series Switches 


The following LEDs report operations and faults and on the AT-8900, AT-9900, 


and AT-9900s switches: 
m SFP port LEDs 

m RJ-45 port LEDs 

m Ethernet port LEDs 
m System LEDs 


LED State 
V/A Green 
(Link Activity) 


Green flashing 


Off 


SFP Green 


Green flashing 


Amber 


Amber flashing 


LED State 
LA Green 
(Link Activity) 


Green flashing 

Amber 

Amber flashing 
D/C Green 
(Duplex/Collision ae 


Amber flashing 


Description 


On AT-8948 only, a 1000 Mbps link has been 
established and is operating in full duplex 
mode. 


On AT-8948 only, a full duplex activity is 
occurring at 1000 Mbps. 


On AT-8948 only and when an SFP is installed, 
the link is closed. 


On the AT-9900 and AT-9900s switches, an SFP 
transceiver is installed and a link has been 
established. 


On AT-8948, an SFP transceiver is installed. 


On the AT-9900 and AT-9900s series, an SFP 
transceiver is installed and a link activity is 
occurring. Not valid for AT-8948. 


On the AT-9900 and AT-9900s switches, an SFP 
transceiver is installed but a link has not been 
established. Not valid for AT-8948. 


An SFP transceiver is installed but there is a 
transmission fault. 


Description 

A 1000 Mbps link has been established. 
1000 Mbps activity Is occurring. 

A 10/100 Mbps link has been established. 
10/100 Mbps activity is occurring. 

The port is operating in Tull duplex mode. 
The port is operating in half duplex mode. 


Collisions are occurring. 


Software Release 3.0.2 
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Hardvvare Reference 


Ethernet port LEDs 


System LEDs 


Softvvare Release 3.0.2 
C613-03092-00 REV C 


LED 


VA 


(Link Activity) 


D/C 


(Duplex/Collision 


LED 


PSU 1 


PSU 2 


State 


Green 


Red 


Off 


Green 


Red 


Off 


State 


Green 


Green flashing 


Amber 

Amber flashing 
Green 

Amber 


Amber flashing 


Description 


11 


Description 


An XFP transceiver is installed and a 10 Gb link 
has been established. 


An XFP transceiver is installed and link activity 
IS occurring. 


A 10/100 Mbps link has been established. 
10/100 Mbps activity is occurring. 

The port is operating in Tull duplex mode. 
The port is operating in half duplex mode. 


Collisions are occurring. 


PSU 1 is installed and supplying power to the switch. The 
voltage output is within specification. PSU 1 is in the right bay 
when facing the rear of the switch. 


One of the following: 


e PSU 1 is installed in the switch, and either a fan has failed 
or the PSU has exceeded Its recommended temperature 
threshold of 75° C (167° F). 


e AFOM is installed in the switch and a fan has failed. 
e The bay is empty. 


A FOM is installed and operating at an acceptable speed. 


For AT-9924T and AT-9924SP models, this LED is always off 
because a FOM is not required. 


PSU 2 is installed and supplying power to the switch. The 
voltage output is within specification. PSU 2 is in the left bay 
when facing the rear of the switch. 


One of the following: 


e PSU 2 is installed in the switch, and either a fan has failed 
or the PSU has exceeded its recommended temperature 
threshold of 75° C (167° F). 


e AFOM is installed in the switch and a fan has failed. 
e The bay is empty. 


A FOM is installed and operating at an acceptable speed. 


12 


AT-8900, AT-9900, AT-9900s Series Switches 


LED State Description (cont) 


Fault Red The switch or management software is malfunctioning. This 


CF 


SD 


LED lights and then turns off after hardware initialises. 


1 Flash One or more heatsink fans has failed or is operating below the 
recommended speed. 


6 Flashes = The switch’s temperature has exceeded the recommended 
threshold. After flashing six times, the LED stops briefly, then 
repeats the sequence. 


3 Flashes For AT-9900 and AT-9900s switches, the ability to monitor 
temperature and fans has failed, and it cannot report whether 
they are in the supported ranges. After flashing three times, the 
LED stops briefly, then repeats the sequence. 


Slow The SDRAM (DIMM) has not been detected. 

flashing 

at startup 

Rapid The SDRAM (DIMM) is not compatible with the switch. 

flashing 

at startup 

Green The CompactFlash memory card is active and should not be 

flashing ejected. The card can be safely ejected when the LED remains 
off. 

Off Secure Digital memory card. Not supported by 3.0.2 software. 


Using Online Documentation 


This section contains instructions on how to view online documentation on the 
CD-ROM. Adobe Acrobat Reader must be installed on your computer to view 
the documentation; you can install it from the CD. 


i 


Insert the Documentation and Tools CD in the CD-ROM drive. 


If the browser menu does not appear, select Run from the Start menu. Then 
type d:\start.exe (where d: is the CD-ROM drive) in the text box, and click 
the OK button. 


To view a specific document, click the document title. 


To browse PDF documents, use any of the following to page through a 
document: 


e toolbar buttons, such as the Next Page button 
e keyboard shortcuts, such as arrow keys 

e commands from the Document menu 

e mouse wheel 


To go to a specific section or topic, click a bookmark, thumbnail, or 
hypertext link. 


Use the Search command to search for keywords or phrases. 


For more information about using the Adobe Acrobat Reader, select Adobe 
Reader Help from the Help menu. 


4. To install one of the tools from the CD, click the link on the browser screen. 


Software Release 3.0.2 
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Hardvvare Reference 


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13 


Using AT-TFIP Server 


This section explains how to access and use the AT-TFIP Server. You can 
transfer configuration files as well as download software upgrades with 
AT-TFIP Server. 


1. If AT-TFIP Server has not been installed, install it from the Documentation 
and Tools CD-ROM. 


Select AT-TFTP Server from the Start > Programs > Allied Telesyn > 
AT-TFIP Server menu. 


2. To set preferences for the AT-TFIP Server, select Options from the File 
menu to display the Set Preferences dialog box shown below. 


Set Preferences xi 


A default directory for the TFTP daemon to read and write files from 
can be specified. File requests without a directory specification will 
use this directory. 


Default file transfer directory 
c:\upload 


To aid secunty. file access can be restricted to one directory. 
Restrict to directory 


c:\upload 
The TFTP daemon can be zet to read only or read and write. In read 
only mode, file write requests to pour system will be rejected. 


IY Read Only l Read Write 


To see extra program diagnostic messages click the control below on 


I¥ Diagnotic Messages 





The "Default file transfer directory" field specifies the directory that 
AT-TFIP Server reads from or writes to for file requests that do not include 
a directory specification. 


Enter a path name in the "Restrict to directory" field to prevent 
unauthorised access to private directories. AI-TFIP Server uses the 
specified directory even when file requests contain references to other 
directories. 


To prevent files from being written to the PC, click the Read only checkbox. 


To use the PC to archive scripts created using the switch's create config 
command, click the Read Write checkbox. 


Click the OK button when you finish. 


3. To load a file from AT-TFIP Server to the switch, type the following 
command on a terminal connected to the RS-232 Terminal Port (ASYNO): 


load method=tftp file=filename server=ipadd dest=flash 


where filename is the name of the file to download and ipadd is the IP 
address of the PC running AT-TFIP Server. 


4. To save a TFIP Server log, select Save As from the File menu. TFTP 
requests are logged to the AT-TFIP Server main window. 


14 


AT-8900, AT-9900, AT-9900s Series Switches 


Using Windows Terminal and 
HyperTerminal 


You can use a PC running terminal emulation software as the manager console, 
instead of a terminal. There are many terminal emulation applications 
available for PCs, but the most readily available are the Terminal and 
HyperTerminal applications included in Microsoft Windows 98, 2000, and 

XP Professional. In standard Windows installations, HyperTerminal is 
available from the Communications submenu. 


The key to successful use of terminal emulation software with the switch is to 
configure the software and switch with matching communications parameters. 
The following procedure can be applied to most terminal emulation programs. 
Dialog boxes in the procedure are from Windows 2000 and XP Professional. 


To configure Windows HyperTerminal for 2000 and XP Professional 

1. Start the program in Windows by doing one of the following: 
e Select Programs > Accessories > Communications > HyperTerminal. 
e Double-click the Hypertrm.exe icon. 

2. Inthe Connection Description dialog box: 
e Enter a name for the connection, such as AT99001. 


e Select an icon from the scrollable list and click the OK button. 





Connection Description 2) xj 


an New Connection 


Enter a name and choose an icon for the connection: 
Hame: 


[aT g9001 


[corn 





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3. Inthe “Connect using” field on the Connect To dialog box, select the COM 
port on the PC used to connect to the switch. and click the OK button. 


eee Ta 





4. Inthe COMn Properties dialog box, set port parameters as follows, and 
click the OK button. 


COM1 Properties 





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16 AT-8900, AT-9900, AT-9900s Series Switches 


5. From the main HyperTerminal window, select Properties from the File 
menu. Click the Settings tab, and set the Properties dialog box as follows. 


4T99001 Properties a 7) x! 


Connect Ta Settings | 
Function, arrow, and ctrl keys act as 

(@ Terminal keys ( Windows keys 
Backspace key sends 

f@ ChreH € Del © CtrleH, Space, Ctrl+H 


E mulation: 


[Auto detect z | Terminal Setup... | 
Telnet terminal ID: (NS 
Backscroll butter lines: [500 + 


EO Flay sound when connecting or disconnecting 


Input Translation... | ASCII Setup... 













OK. | Cancel | 


6. Click ASCII Setup to display the ASCII Setup dialog box, and ensure the 
following options are not selected: 


e Echo typed characters locally 


e Append line feeds to incoming line ends 


Set other parameters as necessary and click the OK buttons on both dialog 
boxes to close them. 


ASCII Sending 
[Send line ends with line feeds 














[Echo typed characters locally 


Line delay: la milliseconds. 
Character delay: la milizeconds. 


ASCH Aecerving 







[Append line feeds to incoming line ends 
[Force incoming data to 7-bit ASCII 
I Wrap lines that exceed terminal width 


7. Save the current session by selecting Save from the File menu on the main 
HyperTerminal window. This creates a connection icon with the name you 
assigned in the HyperTerminal group. 


To use the configuration, double-click the connection icon. When the 
HyperTerminal window appears, press the Enter key several times; the 
switch’s login prompt is then displayed. 


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Process flovv 


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Overrides 


17 


How the Switch Starts Up 


When the switch starts up following a power cycle or an operator-initiated 
reboot (using the reset button or restart command), it performs a series of tests 
and sends messages to the terminal or PC connected to the ASYNO port. After 
the switch successfully starts, a prompt is displayed for you to log in. Refer to 
the Installation and Safety Guide for basic login instructions or to the Getting 
Started chapter in the Software Reference. 


AT-8900 and AT-9900 Switches 


When an AT-8900 or AT-9900 switch starts, it performs the following 
operations. 


Stage This happens... Done by... 
1 Self-tests run that check basic operations. Boot ROM 
2 A prompt is displayed briefly to allow a user-override. Users can Boot ROM 


change the startup process by pressing special keys (see 
Overrides). If they enter nothing, the process continues. 


The flash boot release is loaded as the install software. Boot ROM 


4 Install information is checked and the switch boots up from Boot ROM 
either the preferred or default install. 


5 The startup configuration script that the user specified is Preferred or 
executed. default software 
6 Startup is complete and the switch starts switching traffic if Release software 


devices connected to it are sending traffic. 


The switch pauses briefly during routine startup messages to display the 
following prompt: 


Force EPROM download (Y)? 
If you do nothing, switch software is loaded along with a preconfigured 
startup script. For troubleshooting, change the process by using the following 


keys. 


Pressing this key... Forces the switch to... 


Y Load the flash boot release with no patch. 

S Start with the default configuration so that any boot script is ignored. 

Ctrl+D Enter diagnostics mode. For more information, see ” Diagnostics” on 
page 41. 


18 


AT-8900, AT-9900, AT-9900s Series Switches 


Regular output The following messages are an example of output from AT-8900 and AT-9900 


Types of messages 


AlliedWare 
messages 


switches. 


Self tests beginning. 

RAM test beginning. 

RAM test, 131072k bytes found. 
BBR tests beginning. 

BBR test, 512k bytes found. 
Self tests complete 
Downloading switch software. 


EPROM download (Y) ? 


Initial download succeeded 
Executing configuration script <boot.cfg> 
Switch startup complete 





The following table explains the types of messages that AT-8900 and AT-9900 
switches generate during initial startup. 





Type 
INFO 
PASS 
ERROR 


FAIL 


Description 
An action has been taken by the system. 
A test has been completed successfully. 


An error message that a test has failed but the system continues to 
operate. 


An error message that a fatal error condition has caused the system to halt 
in an unrecoverable fashion. 


The following table explains messages in the output of AT-8900 and AT-9900 





switches. 

Message Description 

INFO: Self tests beginning. Code loader tests are about to begin. 

INFO: RAM tests beginning RAM tests are about to begin. 

PASS: RAM test, 131072k RAM test passed and the switch is using the indicated 
bytes found amount of memory. 

ERROR: RAM test test-number. The given RAM test failed at the given address, which 
Error address = address means the memory system is faulty. The test repeats until 
For example: it passes. If the error continues, contact your authorised 
ERROR: RAM test 5. Error distributor or reseller. 


address = 00345678 


INFO: BBR tests beginning BBR battery tests are about to begin. 


PASS: BBR test. Battery OK BBR battery tests passed. 


ERROR: BBR Battery low BBR battery test failed, indicating that the battery Is 


running low. The BBR battery must be replaced. Contact 
your authorised Allied Telesyn distributor or reseller. 


PASS: BBR test, 512k bytes BBR size/location test passed with the indicated amount of 


found 


BBR found. 


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19 





Message 


FAIL: BBR test. Error address = 
location 


FAIL: BBR test, only 16k bytes 
found 


INFO: Self tests complete 


INFO: Downloading switch 
software 

ERROR: Code load retried 
FAIL: Code load failed 


Force EPROM download (Y) ? 


INFO: Initial download 
succeeded 


INFO: Downloading 
compressed release. This may 
take up to 1 minute... 


INFO: Loading software into 
memory. This may take up to 1 
minute... 


INFO: Executing configuration 
script <script-name> 


INFO: Switch startup complete 


Description (cont) 


BBR size/location test failed at the given location. The test 
at this location failed, indicating the end of memory, but a 
valid location was discovered in the 255 long words 
following this location. The BBR system must be replaced. 
Contact your authorised distributor or reseller. 


The BBR size/location test completed, but only the 
displayed amount of memory was found. This amount is 
less than the minimum required to run the switch 
software. 


Startup tests have finished. 


The process of downloading the switch software and 
vector table from ROM is about to begin. 


Loading code from ROM to RAM failed. The load is retried 
a number of times, and the error message is displayed 
each time it fails. The fail message is displayed if the switch 
reaches the maximum number of attempts. 


Prompt that lets you override the standard startup 
sequence, typically when troubleshooting. 


Startup tests and download are complete, and the switch 
software is about to be started.The release is now 
decompressed. This may take a few seconds. 


The main switch software is decompressed before being 
loaded into RAM. 


Configuration commands in the given script Tile begin 
executing if selected by the user. If the script has an error, 
appropriate error messages are displayed. 


The startup process is complete and the switch is ready. If 
devices connected to it are sending traffic, then the switch 
begins switching operations. 


20 


Process flovv 


Overrides 


AT-8900, AT-9900, AT-9900s Series Switches 


AT-9900s Switches 


This section explains how AT-9900s switches start initially, including error 
messages. The following types of software play key roles during startup. 





Software Description 


Base Product software that is typically the “preferred” base package installed. 
It constitutes a feature set—similar to a "release”—and runs the switch. 
A software licence must be enabled for specific base packages. 


Fallback A small subset of the base package that runs when the base package Is 
unavailable. It can download and install a base package, modify 
configuration scripts, and monitor the system. 


Bootloader Software that runs the switch when it first powers up. It performs basic 
initialisation, provides a basic interface for hardware diagnostics, and 
executes either the product or fallback software. 


When the switch starts, it performs the following operations. 





Stage This happens... Done by... 
1 Self-tests run that check basic operations. Bootloader 
2 A prompt is displayed briefly to allow a user-override. Users Bootloader 


can change the startup process by pressing special keys (see 
Overrides). If they enter nothing, the process continues. 


3 Product software or fallback software is executed, depending Bootloader 
on what the user installed. 
4 Hardware boards and software components are initialised. Base or Fallback 
5 The startup configuration script that the user specified is Base or Fallback 
executed. 
6 Startup is complete and the switch starts switching traffic if Base 


devices connected to it are sending traffic. 


The AT-9900s switch pauses briefly during startup messages to display the 
following prompt: 


Boot fallback software (Y)? 
If you do nothing, the installed base package loads along with a preconfigured 


startup script. For troubleshooting, change the process by using the following 
keys. 





Pressing this key... Forces the switch to... 


Y Load the fallback software instead of the base package, and skip the 
startup configuration script. 

S (skip) Load the base package and skip the startup configuration script. 

Ctrl+B Display a bootloader prompt. To upgrade a bootloader file, load the 


new .bin Tile into the file system, and enter the command: 
copy filename.bin bootloader 


For information about the load command, see the Managing 
Configuration Files and Software Versions chapter in the Software 
Reference. 


Ctrl+D Enter diagnostics mode. For more information, see “Diagnostics” on 
page 41. 


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Hardvvare Reference 21 


Regular output Bootloader and product software (AlliedWare) display a series of messages 
similar to those in the following figure during routine startup for the AT-9900s 
switch. 


Bootloader v1-00, built Feb 10 2005 
Initial RAM test passed 
Available RAM 


Relocating the bootloader to execute from RAM .... done 


Boot fallback software (Y) ? 


Initialising file system access 
Booting preferred base package: AT9924s 301-00.pkg 
Installing system.img (1219098 bytes) 


Initiating system software 


V3 601-005 buale Li Reb: 2005 


Initialising file system access 
Validating package licence 
Installing product_apps.img (8925892 bytes) 


IGMP packet trapping has been activated for IGMP snooping 
Executing configuration script <startup.cfg> 
Switch startup complete 





Fallback output Fallback software is a subset of the base package and runs when the base 
package is unavailable. When the switch runs fallback software, a series of 
messages similar to those in the following figure are displayed. 


(bootloader messages) 
Installing system.img (1219098 bytes) 
Initiating system software 
AlliedWare Fallback v3.0.1-00, built 11 Feb 2005 


WARNING: Fallback software will not allow normal 
network operation 


Initialising file system access 
Installing product_apps.img (8925892 bytes) 


Executing configuration script <startup.cfg> 
Switch startup complete 





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22 


Bootloader 
messages 


AT-8900, AT-9900, AT-9900s Series Switches 


The following table explains messages that bootloader software displays at 
initial startup for the AT-9900s switch. 





Message 


Bootloader <version>, built 
<date> 


Initial RAM test...passed 
or 
Initial RAM test...failed 


Available RAM...512 MB 


Relocating the bootloader 
to execute from 
RAM...done 

or 

Relocating the bootloader 
to execute from 
RAM...failed 


Boot fallback software (Y) ? 


Initialising Tile system 
access...done 

or 

Initialising file system 
access...failed 


Booting install-type 
filename.pkg. 


Installing system.img 
<bytes>...done 

or 

Installing system.img 
<bytes>...failed 


Initiating system 
softvvare...done 
Or 

Initiating system 
softvvare...failed 


Description 


Banner that identifies the bootloader softvvare. 


Whether initial RAM tests are successful. If tests detect a 
problem with DRAM, the switch cannot be used. Contact 
your authorised distributor or reseller. 


The switch is using the amount of memory indicated. 


Whether bootloader software is successfully running from 
RAM instead of flash memory. If not successful, the system 
pauses indefinitely; contact your authorised distributor or 
reseller. 


Prompt that lets you override the standard startup sequence, 
typically when troubleshooting. 


If you press Y, the switch boots from fallback software, and a 
confirmation message Is displayed. For more information, see 
fallback output. 


Whether bootloader software has initialised access to the file 
system. 


Failure means a problem with the file system or memory 
device. The switch reformats memory and processing 
continues but data will be lost. Contact your authorised 
distributor or reseller. 


Name of the software package to be installed: preferred 
base package, temporary base package, or fallback. For 
information about types of install, see “Install Process” in 
the Managing Configuration Files and Software Versions 
chapter in the Software Reference. 


Whether the system software image of the given size is 
successfully installed in RAM and able to execute.This image 
is extracted from the installed package. 


If this fails when booting from a base package, the switch 
goes to the fallback software. 


If this file cannot be extracted from the fallback package, 
there may be a problem with fallback; contact your 
authorised distributor or reseller. 


Whether bootloader software has initiated execution of 
product software or fallback software, whichever the user 
selected, and is shifting control to it. If not successful, the 
system pauses indefinitely; contact your authorised 
distributor or reseller. 


Bootloader Error Messages 


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messages 


23 





Message 


ERROR: Fallback area is 
corrupt - launching the 
bootloader CLI 


ERROR: No main board 
personality - launching the 
bootloader CLI 


No valid installed package - 
booting fallback software 


ERROR: No valid software 
available - launching the 
bootloader CLI 


ERROR: Package 
filename.pkg is not valid 


ERROR: ELF header has 
problem 


ERROR: System image has 
no section headers 


ERROR: No memory 
available for storing ELF 
element 


Description (cont) 


The switch is shifting to bootloader software because the 
fallback area in flash is unformatted or corrupt. It displays a 
bootloader prompt. Contact your authorised distributor or 
reseller before proceeding. 


Unique information about the main PCB has not been 
programmed and the switch cannot start without It. Contact 
your authorised distributor or reseller. 


The switch cannot find valid installed software, or files with 
install information are corrupt and the fallback area does not 
contain a valid file. The switch starts from fallback software. 
See the Managing Configuration Files and Software Versions 
chapter in the Software Reference for information about 

installation procedures, including the set install command. 


The switch is shifting to bootloader software because it 
cannot find a valid package. It displays a bootloader prompt. 
Contact your authorised distributor or reseller before 
proceeding. 


The switch could not extract the system image file because of 
a problem with the given package. Install a different package 
trom fallback. Contact your authorised distributor or reseller 
if the problem continues. 


The system image file is corrupt or invalid due to the reason 
given.The switch tries to start from fallback software. If this 
tails, contact your authorised distributor or reseller. 


The system image file is corrupt or invalid because It has no 
section header information. Contact your authorised 
distributor or reseller. 


A serious problem exists with memory allocation software or 
memory on the switch. Contact your authorised distributor 
or reseller. 


The following table explains messages that the base and fallback software 
display at startup for the AT-9900s switch. 





Message 


Alliedware <version>, built 
<date> 


WARNING: Fallback 
software will not allow 
normal network operation 


Initialising Tile system 
access...done 

or 

Initialising Tile system 
access...failed 


Validating package 
licence...done 

or 

Validating package 
licence...failed 


Description 


Banner that identifies the product software the switch is 
executing—base or fallback. 


When starting trom fallback software, a reminder that 
fallback is a subset of the product software and does not 
have its full functionality. 


Product software has initialised access to the file system. 


Failure means a problem with the file system or flash. 
Processing will continue but data will be lost. Contact your 
authorised distributor or reseller. 


Whether a valid licence has been found for the base package. 
Verify licence, version, and switch model and contact your 
authorised distributor or reseller if necessary. Not displayed 
for fallback. 


24 


AT-8900, AT-9900, AT-9900s Series Switches 





Message 


Installing product_apps.img 
(8925892 bytes)...done 

or 

Installing product_apps.img 
(8925892 bytes)...failed 


IGMP packet trapping has 
been activated for IGMP 
snooping 


Executing configuration 
script <startup.cfg> 


Switch startup complete 


ERROR: Phase 1 of Software 
Manager startup failed - 
rebooting 


WARNING: Bad board of 
type <number> in 
Expansion Bay <number> 


WARNING: Unsupported 
board of type <number> in 
Expansion Bay <number> 


Unit was rebooted because 
of a system exception 


Creating core file 
system_release- 
number.core...done 
or 

Creating core file 
system_release- 
number.core...failed 


ERROR: Unable to read 
fallback package 
information 


ERROR: Unable to read 
preferred or temporary 
install information 


Description (cont) 


Whether the product application image of the given size is 
installed in RAM and able to execute. This file is part of the 
installed package. 


Failure could mean not enough RAM or the package is 
corrupt. Contact your authorised distributor or reseller. 


IGMP packet trapping is enabled to allow IGMP snooping to 
function. A warning is displayed if this function could not be 
activated. Not displayed for fallback. 


Configuration commands in the given script file begin 
executing if selected by the user. If the script has an error, 
appropriate error messages are displayed. 


The startup process is complete and the switch is ready. If 
devices connected to it are sending traffic, then the switch 
begins switching operations. 


AlliedWare Error Messages 


Software Manager is part of the system software that 
controls startup of the product software. It failed to complete 
the first phase of its initialisation and cannot boot the 
fallback software. Manually restart the switch with fallback 
software (for details, see “Overrides” on page 20). 


If this error occurs while rebooting from fallback, contact 
your authorised distributor or reseller. 


Board personality of the given type in the given bay could not 
be read. Possible causes include: 


e unprogrammed personality PROM on the board 
e faulty hardware on expansion or host board 


For information about boards, see the show system boards 
command in the Configuring and Monitoring the System 
chapter in the Software Reference. 


Software does not support the board of the given type in the 
given bay. 


The switch is restarting after a system exception. Depending 
on the exception, you may need to contact your authorised 
distributor or reseller. 


Displayed after the switch restarts itself, and indicates 
whether system core information has been written to the 
specified file. Each image file creates its own core file and 
coredump. This information is loaded into RAM after a 
system exception and before the switch restarts. Contact 
your authorised distributor or reseller. 


Information about fallback software is not available. Contact 
your authorised distributor or reseller. 


Information is not available about the type of install 
indicated. The switch tries to start from fallback software. If 
this fails, contact your authorised distributor or reseller. 


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Hardvvare Reference 25 





Message Description (cont) 
ERROR: Failed to extract The product application image could not be extracted from 
product apps.img from the package file because the package file is corrupt or there 
package to RAM is not enough RAM. 


Manually restart the switch with fallback software (for 
details, see “Overrides” on page 20), and install another 
base package. 


If this error occurs while rebooting from fallback, contact 
your authorised distributor or reseller. 
ERROR: Failed to run The operating system could not execute the product 
product_apps.img application image Tile. 


Manually restart the switch with fallback software (for 
details, see “Overrides” on page 20), and install another 
base package. 


If this error occurs while rebooting from fallback, contact 
your authorised distributor or reseller. 


ERROR: Phase 2 of Software Software Manager is part of the system software that 


Manager startup failed - controls startup of the product software. The install 

rebooting to fallback information for it is invalid or the installed software is not 

software licenced. Therefore, the switch boots up from the fallback 
software. 


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26 


Approved SFP 
transceivers 


Types of SFP 
transceivers 


AT-8900, AT-9900, AT-9900s Series Switches 


SFP Ports 


SFP transceivers are compact, hot-swappable, and high speed. Certain fibre 
and copper SFP transceivers are supported so that you can interchange port 
types to meet changing network requirements. AT-8900 and AT-9900 switches 
have 1000BASE-X Small Form Factor Pluggable (SFP) uplink sockets 
conveniently located on the front panels. 


m AT-8948, AT-9924T/4SP, and AT-9924T models have 4 SFP sockets 
m AT-9924SP models have 24 SFP sockets 


You can purchase SFP transceivers when you purchase a switch or order them 
separately as needed. For details about tested and approved SFPs, see “SFP 
ports” on page 39. Also see individual datasheets on the documentation CD for 
details. 


For the latest list of approved SFP transceivers, contact your authorised 
distributor or reseller. 


Speed and duplex settings differ depending on the type of SFP transceiver 
installed in it. 


m Foran SFP port with an approved fibre SFP transceiver, the speed and 
duplex settings are fixed at 1000 Mbps full duplex autonegotiation. 


m Foran SFP port with an approved copper SFP transceiver, the available 
speed and duplex settings are: 


e 10Mbps and 100Mbps half duplex 

e 10Mbps and 100Mbps half duplex autonegotiation 
e 10Mbps and 100Mbps full duplex 

e 10Mbps and 100Mbps full duplex autonegotiation 
e 1000Mbps full duplex autonegotiation 


An error message is displayed when an SFP port cannot operate at the 
specified speed or duplex mode. 


When using SFP ports 1 to 4 on A1-9924T /4SP and AT-9924T switches, the 
corresponding RJ-45 ports (1 to 4) are disabled. However, when the SFP 
transceiver is removed, the RJ-45 port becomes operational again. 


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Hardvvare Reference 27 


To insert or remove The SFP transceiver must be inserted the correct way in the socket, which 
an SFP transceiver varies depending on whether the switch has a single or dual row of sockets. 
For example, the AT-8948 has single-row sockets but the AT-9900 has a dual 
row. See the example of dual-row sockets for a copper SFP transceiver in the 
figure below. Notice the varying position of the release lever. 


Warning Do not look into SFP cables or transceivers. Invisible laser radiation 
may be emitted from disconnected fibres or connectors. 








SFP 


Slide the transceiver into the SFP socket, and firmly press it until it engages. To 
remove it, first release it by gently pulling the release lever, and then pull the 
transceiver out of the socket. Never force a transceiver into or out of a socket. 


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28 


AT-8900, AT-9900, AT-9900s Series Switches 


Management Ports 


The following management ports let you configure, monitor, and upgrade the 
switch: 


m RS-232 Terminal Port (ASYNO) 
= Out-of-Band Ethernet Management Port (AT-9900s switch only) 


RS-232 Terminal Port (ASYNO) 


The RS-232 ASYNO port is standard for the AT-8900, AT-9900, and AT-9900s 
switches, and connects them to a management device for initial configuration. 
This port allows the software on the switch to be accessed from a terminal or a 
PC running terminal emulation software. 


The ASYNO port has an RJ-45 socket with an industry recognised pinout. This 
requires using a straight-through RJ-45 cable with an RJ-45 DB9 connector 
when the switch is connected to a terminal or PC. The socket is wired as a DTE 
and the pin layout is shown in the following figure and table. 





DSR (DTR and DSR are connected but have no other internal connection) 


Pin Role 

1 RTS 

2 DTR (DSR and DTR are connected but have no other internal connection) 
3 TXD 

4 GND 

5 GND 

6 RXD 

7 

8 


CTS 


Out-of-Band Ethernet Management Port 


The out-of-band 10/100/1000 Mbps Ethernet port is dedicated to management 
traffic on the AT-9900s switch. Use it for initial configuration and on-going 
management tasks. For remote access, use the default IP address, 
192.168.242.242. This port is reserved for management only; the switch does 
not transmit frames between this port and switch ports. 


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RJ-45 to DB9 
female terminal 


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cable 


29 


Cables 


This section describes the following: 

m RS-232 Terminal and Modem Cables 

m Cables for RJ-45 Ethernet LAN Interfaces 
m Cable Guidelines 

m ‘Troubleshooting Cables 


RS-232 Terminal and Modem Cables 


The terminal and modem cables described in this section are: 
m RS-232 RJ-45 to DBI female terminal cable 
m DCE RS-232 terminal port RJ-45 to DBI male modem cable 


The following figures show pin wiring diagrams to connect a standard VT100 
compatible terminal or modem to ASYNO. 


RJ-45 DB9 Female 
(to switch) (to terminal) 


AM ONAN WW RE 


1 
2 
3 
4 
5 
6 
7 
8 
9 


not connected 


Note 
This cable supplied as part number C855-84903-00. 
Now at version B. 
RJ45DB9F_x900 





30 


RJ-45 to DB9 
male modem cable 





A 


Pin assignments 


AT-8900, AT-9900, AT-9900s Series Switches 


RJ-45 DBO Male 
(to switch) (to modem) 


not connected 


7 
6 
3 
2 
4 
3 
I 
8 


ON Om qm EFE co N — 


9 not connected 


Note 
Cable version 1.0 


RJ45DB9M_x900 





For more information on pin assignments for the RS-232 port, see “RS-232 
Terminal Port (ASYNO)” on page 28. 


Cables for RJ-45 Ethernet LAN Interfaces 


A twisted pair cable with four pairs and RJ-45 connectors must be used for 
10BASE-T/100BASE-TX/1000BASE-T connections. 


Caution Do not plug a phone jack into an RJ-45 switch port because you could 
damage the switch. Use only twisted pair cables with RJ-45 connectors. 


Each pair of twisted pair cables is identified by related colors. For example, one 
wire might be red and the related wire would be red-and-white stripe. An 
RJ-45 connector must be fitted to both ends of the cable. The following diagram 
shows RJ-45 connectors and the pin layout. 





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Hardvvare Reference 31 


1000BASE For 1000BASE network connections, all four pairs are used and the cable is 
straight-through wired in a straight-through configuration. You can use this cable with the 
cable software test facility to test 1OOOBASE network ports. The following table lists 
pin assignments for a 10/100/1000BASE-T RJ-45 four pair straight-through 


cable. 

End | End 2 

Pin Pair Pin Pair 

1 Pair 1+ 1 Pair 1+ 
2 Pair 1- 2 Pair 1- 
3 Pair 2+ 3 Pair 2+ 
6 Pair 2- 6 Pair 2- 
4 Pair 3+ 4 Pair 3+ 
5 Pair 3- 5 Pair 3- 
7 Pair 4+ 7 Pair 4+ 
8 Pair 4- 8 Pair 4- 


1000BASE — For 1000BASE test cables, all four pairs are used and the cable is wired in either 
crossover cable a crossover or straight-through configuration. The following table lists pin 
assignments for a 10/100/1000BASE-T RJ-45 four pair crossover cable. 


End | End 2 

Pin Pair Pin Pair 

1 Pair 1+ 1 Pair 2+ 
2 Pair 1- 2 Pair 2- 
3 Pair 2+ 3 Pair 1+ 
6 Pair 2- 6 Pair 1- 
4 Pair 3+ 4 Pair 4+ 
5 Pair 3- 5 Pair 4- 
7 Pair 4+ 7 Pair 3+ 
8 Pair 4- 8 Pair 3- 


Cable Guidelines 


The following table lists port, connector, and cable combinations for switch 
models and expansion modules. 


Model Port Type Connector Type Cable Type! Maximum Cable Length 

AT-8948 10BASE-T RJ-45 CAT5 100m Max 
100BASE-TX CAT5E 120m Max 

AT-9924T/4SP 1OBASE-T 

AT-9924T 1OOBASE-TX 

AT-9924Ts 1000BASE-T 

AT-A62 

AT-8948 1000BASE-X Varies with SFP Refer to documentation Refer to documentation 

AT-9924T/4SP packaged with SFP packaged with SFP 

AT-9924T 

AT-9924SP 

AT-A61 


|. Refer to the IEEE Standard 802.3 for additional cable information 


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32 


Cable test 


Cable lengths 


AT-8900, AT-9900, AT-9900s Series Switches 


Troubleshooting Cables 


The virtual cable test facility diagnoses cable faults and the approximate 
distance to them on Gigabit Ethernet RJ-45 ports for the following switches: 
m AT-9924T 

m AT-9924T/4SP 

m  AT-9924Ts 


See “Test Facility” on page 40 for more information or the Test Facility chapter 
in the Software Reference. Not all copper SFPs support this feature; however, 
those listed in “Approved SFP transceivers” on page 26 do support it. 


Approximate cable lengths are reported for gigabit Ethernet RJ-45 ports on the 
following switches: 


m AT-9924T 
m AT-9924T/4SP 
m AI-9924Ts 


Cable length is reported after the link is established. To check the length, use 
the show switch port command described in the Switching chapter in the 
Software Reference. The Cable Length parameter in the output of this 
command can be one of the following values: 


m <50m 

m 50-80m 

m 80-110m 
m —110-140m 
m >140m 


m ——(either the port link is down, or the port is operating at 10Mbps or 
100Mbps) 


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Hardvvare Reference 33 


Power Supply Units (PSUs) 


Two power supply bays are at the rear of the AT-8900, AT-9900, and AT-9900s 
chassis. Each switch is supplied with a single power supply unit (PSU), either 
AC or DC. Depending on the model, the switch has either a fan-only module 

(FOM) or a blanking panel: 


m The AT-8948, AT-9924T/4SP and AT-9924Ts switches have a PSU anda 
FOM installed. 


m The AT-9924T and AT-9924SP switches have a PSU and a blanking panel 
installed. When there is just one PSU, it must be in Bay 2 for optimised 
cooling. 


The following figure shows the rear view of the AT-8948, AT-9924T/4SP, and 


AT-9924Ts models. 
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Z_+_\ CAUTION: DISCONNECT ALL POWER CORDS TO DISABLE SYSTEM POWER 


A second PSU is available as an option and provides redundancy. When two 
are fitted, they must be the same type of current, either AC or DC. 


Each PSU and FOM contains an EPROM chip that contains information, such 
as the type of module, serial number, and revision of the PSU. This information 
is available through the command line interface (CLI). 


How to install a PSU or FOM in the switch is described in the Removable Power 
Supply and Fan Installation Guide. 


Hardware overview m Power supply units (PSUs) are hot-swappable and load share 

m Dimensions 
e Height: 40.9mm 
e Width: 193mm 
e Depth: 130mm 

m AC models 
e Universal 100/240 VAC 47/63 Hz input 
e Maximum continuous current draw: 2.2A at 100V, 1.1 A at 230V 


e Maximum inrush current (cold start at 25°C/77°F): 70A at 240V, 32 A at 
115V 


Caution Double pole/neutral fusing. The fuse rating for FH101 and FH102 
is 250V, 5 A (AT-PVVRO1). 


m DC models 
e 40 to 60V, 48V nominal 
e Supports either positive grounded or negative grounded operation 
e Maximum continuous current draw: 3.9 A at 40V 
e Maximum standby current: 100mA 


e Run/Standby switch 


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34 


Approved PSUs 
and FOM 


LEDs on the 
PSU and FOM 


How the card works 





A 


Verifying installation 


AT-8900, AT-9900, AT-9900s Series Switches 


Product numbers for the power supply unit (PSU) and the fan-only module 
(FOM) that can be fitted in the AT-8900 and AT-9900 switches are: 


m AI-PWRO1(either AC or DC power supply unit) 
m  AT-PWR02 (AC power supply unit only) 
m ATI-FANO1 (fan-only module) 


For the AT-9900s Series switch only, you can install the AT-PWRO1 and 
AT-FANO1 models. 


The following table describes how LEDs on power supply units and fan-only 
modules report faults and operational activities. 


LED State Description 


Fault Red There is either a fan failure, or the temperature has exceeded 
the limit of 75°C (167°F). 


PWR Green A PSU is installed in the switch and is receiving power. The 
FOM does not have this LED. 


IPv6 Accelerator Card 


An optional AT-ACC01 network processor accelerator card accelerates IPv6 
unicast and multicast routing in hardware on AT-8900 and A1-9924T /4SP 
switches. For full functionality, 512MB SDRAM must be installed in the switch. 


When the switch receives an IPv6 packet to route, the packet is sent to the 
network processor accelerator card. The card processes the packet and sends it 
out the correct port with appropriate alterations to the packet. Other IPv6 
functions are passed to software, such as routing protocol control packets, 
encryption, authentication, and Hop-by-Hop headers. 


No configuration is necessary for the accelerator card to function; the card is 
enabled at installation. If you disable the card (using software), the switch 
handles IPv6 routing in the software. 


Use the hardware filter and QoS commands to enable Quality of Service (QoS) 
functionality on the accelerator card. For information about QoS functionality 
and hardware filters, see the Quality of Service and Switching chapters in the 
Software Reference. 


Warning Only authorised service personnel should install a network processor 
accelerator card. Opening the switch’s lid may cause personal injury from 
electric shock, could damage the switch, and will invalidate the product 
warranty. 


To confirm that the network processor accelerator card is installed and 
operating correctly, check that the switch has recognised it. Turn on the switch 
and enter the show system command to display system information. The 


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Hardvvare Reference 35 


following figure is an example of output from the show system command for 
the AT-9924T/45P switch. 


Switch System Status Time 14:50:14 Date 11-Nov-2004 
Board Name Host Id Rev Serial number 


AT-9924T/4SP 61556164 
AT-ACCO1 61493315 
AT-FANO1 61106469 
AT-PWRO1-AC 607031960 


DRAM :524288 RB FLASH 16384 RB 


SysDescription 
Allied Telesyn AT-9924T/4SP version 2.6.6-00 11-Nov-2004 
SysContact 


SysLocation 
SysName 
SysDistName 


SysUpTime 

620 dd. 00200506. 3) 

Boot Image >: 99b104.fbr size 1026588 11-Nov-2004 
Software Version: 2.6.6-00 11-Nov-2004 

Release Version : 2.6.6-00 11-Nov-2004 

Patch Installed : NONE 

Territory : usa 

Help File : 89-272a.hlp 


PSU1: (FAN) Fan: Normal 
PSU2: (AC) Fan: Normal Temp: Normal Power: Normal 


Current temperature : Normal 


Main fans Normal 
Accelerator fan 1 Normal 
Accelerator fan 2 Normal 


Configuration 
Boot configuration file: flash:boot.cfg (exists) 
Current configuration: flash:boot.cfg 


Security Mode : Disabled 


Warning (2048284): No patches found. 





The first section of the output shows information about boards installed in the 
switch. There are details about the switch base card, the accelerator card if 

installed, and the type of power supply unit or fan-only module. Both the part 
names and serial numbers of the base card and accelerator card are displayed. 


Record the details of the base card and the network processor accelerator card 
for later reference. If you have questions or problems with the network 
processor accelerator card at any time, contact your authorised distributor or 
reseller and supply the serial numbers for them. 


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36 


Displaying 
information 
about the card 


Approved CFlash 
cards 


AT-8900, AT-9900, AT-9900s Series Switches 


If there is no entry for the accelerator card, then the switch’s boot process has 
not detected the card. The most likely cause is that the card is not correctly 
plugged into the slot on the switch’s base board. 


To display information about the status and memory of a network processor 
accelerator card on AT-8900 and AT-9924T /4SP switches, use the show switch 
accelerator command. 


The following figure is an example of output from the show switch accelerator 
command. 


Switch Accelerator Configuration 


AT-ACCO1 

TPv6 Acceleration 

IPv6 active 
Search memory size 


Counter memory size 





Memory Options 


The following memory expansion options are available: 


m CompactFlash Card—AT-8900 and AT-9900 switches have a slot on the 
front panel 


m Dual In-line Memory Module (DIMM)—installed in AT-8900, AT-9900, 
and AT-9900s switches 


CompactFlash Card 


CompactFlash (CFlash) cards are a memory expansion option for AT-8900 and 
AT-9900 switches. Data such as releases, patches, and configurations can be 
stored on these cards, and files can be manipulated with the command line 
interface (CLI). However, release and patch files cannot be run directly from 
the card, but must be loaded into either NVS or onboard flash. 


Important Anyone with a compliant reader can read CFlash cards so do not 
keep sensitive data on them. 


The following CompactFlash cards are approved for use with AT-8900 and 
AT-9900 switches: 


m AT-CF032A-nnn 32 MB 
m AT-CF064A-nnn 64 MB (AT-9900 only) 
m AT-CF128A-nnn 128 MB 


Where 1 is the number of cards in a package, less than 1000. A package 
containing one card is 001. 


For the latest list of approved CFlash cards, contact your authorised distributor 
or reseller. 


CFlash cards used with the switch must support a hardware access time of no 
more than 100 nanoseconds. If a card does not meet this requirement, it may 
not work. 


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Inserting and 
removing 
a CFlash card 


Displaying data 
about a CFlash card 


Testing a CFlash card 


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37 


You can insert a card into the CompactFlash slot at any time; it takes about two 
seconds to initialise. The following CLI message confirms that a card has been 
inserted: 


Info (1106257): Compact flash card inserted. 


The following message confirms that the card is ready to use: 

Info (1106268): Compact flash card initialisation successful. 
The following message means that the CFlash card is not compatible with the 
switch: 

Info (3106300): Compact flash card initialisation 


unsuccessful. 


Important When data is being written to or read from the card, the CF LED on 
the front panel of the switch is green. Do not remove the card when it is active 
or you will corrupt the data. Wait until the LED is off before ejecting the card. 


To display information about the basic state of a CompactFlash card, including 
card size, file count, and serial number, insert the card and enter the command: 


show cflash 


To display cluster ranges on a card, insert the card and enter the command: 


Show cflash test 


The following figure is an example of output from the show cflash test 
command when no test is running. 


Clusters available for testing 
Ranges: 
[42645--61944] 


Number of free clusters 
Number of ranges 
Number of used clusters 





To test a card, insert it in the CF slot and enter the command: 


enable cflash test start=startnumber end=endnumber 


where startnumber and endnumber are positive integers within a cluster range. 
The end number must be higher than the start number. Cluster ranges are 
displayed in the output of the show cflash test command. 


The test software reads the file allocation table and displays a list of free 
sectors. Sectors can be tested as single sectors or as a range. The test consists of 
a write/read/verify cycle. 


To stop the test, use the disable cflash test command. To display test results 
while a test is in process, enter the show cflash test command. 


38 


AT-9924T and 
AT-9924SP switches 


AT-9924T/4SP switch 


AT-9924Ts switch 


A 





Verifying DIMM 
installation 


AT-8900, AT-9900, AT-9900s Series Switches 


The following is example output from the show cflash test command when a 
test is running. 


Test Progress 
Starting cluster 
Ending cluster 
Current cluster 


Passed clusters number 
Passed sectors number 


Failed clusters number 
Failed sectors number 
Used Clusters encountered 


Duration 





Error messages are displayed when a file write fails. Failure could be due to the 
card being removed or an error in the card itself. For information about CFlash 
commands, see the Managing the File System chapter in the Software Reference. 


Dual In-line Memory Module (DIMM) 


Synchronous DRAM (SDRAM) is provided by a single DIMM for AT-8900, 
AT-9900, and AT-9900s switches. Only DIMMs supplied by Allied Telesyn have 
been tested and approved for use. Using unapproved DIMMs may cause 
unreliable operation and will invalidate the warranty for the switch. 


The following DIMMs have been approved for use with AT-9924T and 
AT-99245P switches: 


m AT-5SD128A-00 128 MB SDRAM (factory installed) 
m AT-SD256A-00 256 MB SDRAM (upgrade) 


The following DIMMs have been approved for the AT-9924T/45P switch 
without the AT-ACCO1 network processor accelerator card: 


m AT-SD256A-00 256MB SDRAM (factory installed) 
m AT-SD512A-00 512MB SDRAM (upgrade) 


For an AT-9924T/4SP switch with an AT-ACC01 network processor accelerator 
card, the following DIMM is required: 


m AT-SD512A-00 512MB SDRAM (factory installed when the switch is 
ordered with an AT-ACCO1 fitted) 


The AT-9924Ts switch is shipped with a 512 MB SDRAM DIMM; no upgrades 
are available. 


Warning Only authorised service personnel should install DIMMs. Opening 
the switch’s lid may cause personal injury from electric shock and could 
damage the switch. 


The switch is unlikely to boot unless the DIMM is correctly installed. If the 
switch does boot but you suspect the DIMM is malfunctioning, display system 
information by using the show system command. See “Verifying installation” 
on page 34 for output. 


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Hardvvare Reference 39 


The size of DRAM is in the memory section of the output. If the DRAM size is 
less than the size of DIMM that has been installed, then the switch has not 
detected the DIMM. The most likely cause is that the DIMM connector is not 
correctly plugged into the slot. 


Record the switch’s serial number and revision details for later reference. If you 
have questions or problems with the DIMM at any time, contact your 
authorised distributor or reseller and supply these serial numbers. 


Expansion Options 


The following expansion options are available: 
m SFP ports 

m XFP ports 

m —Rj-45 ports 


Optional expansion modules make the AT-9900s one of the most flexible 
switches available. They provide economical combinations of speed and port 
density. Two 20 Gbps bays in the front of the AT-9900s switch allow quick and 
easy installation. 


Refer to the Expansion Module Installation Guide for AT-9900s switches for more 
information about each model. For the latest list of approved transceiver 
modules, contact your authorised distributor or reseller. 


SFP ports The following SFP modules are approved for use with the AT-8900 and 
AT-9900 switches, including the AT-A61 1000BASE-X expansion module for 
the AT-9900s switch. 


Product No. Media Type Description 

AT-SPTX 10/100/1000BASE-T Copper, 100m at 1000Mbps, RJ-45 connector 
(except for AT-9924SP) 

AT-SPSX 1000BASE-SX 850nm, 2m to 500m with 50/125um MM fiber, 
2m to 275m with 62.5/125um MM fiber, LC 
connector 

AT-SPLX10 1 OOOBASE-LX 1310nm, 2m to 10km with 9um SM fiber, 


2m to 550m with 50um MM fiber, 2m to 550m 
with 62.5um MM fiber, LC connector 


AT-SPLX40 1 OOOBASE-LX 1310nm SM fiber up to 40km, LC connector 

AT-SPLX40/ 1 0OOOBASE-LX 1550nm SM fiber up to 40km, LC connector 

1550 

AT-SPZX80 1000BASE-ZX 1550nm, 80km with 9um SM fiber, LC 
connector 

AT-SPZX80/ 1000BASE-ZX Wavelengths of 1610nm to 1470nm (20nm 

XXXX CWDM intervals) and 1310nm, 80km with 9 micron SM 


fiber, LC connector. Where xxxx can be: 
1610 1590 1570 1550 
1530 1510 1490 1470 


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XFP ports The following XFP modules are approved for use with the AT-A60 10Gigabit 
Ethernet expansion module for the AT-9900s. 


Product No. Media Type Description 

AT-XPSR 10GBASE-SR 850nm short-haul transmission, 300m with 
MMF 

AT-XPLRM 10GBASE-LRM 1310nm short-haul transmission, 300m with 
MMF 

AT-XPLR 10GBASE-LR 1310nm medium-haul transmission, 10km with 
SMF 

AT-XPER40 10GBASE-ER 1550nm long-haul transmission, 40km with 
SMF 


RJ-45 ports The 12-port RJ-45 expansion module, model AT-A62, features the following: 
m two rows of 6 RJ-45 ports 
m gigabit ports that support speeds of 10/100/1000Mbps 
m status LEDs 
m two 16MByte DDR-SDRAM for packet buffering 


m cable fault detection and distance-to-fault diagnostics are available for RJ- 
45 Ethernet ports (see the Test Facility chapter in the Software Reference for 
the switch) 


Test Facility 


The test facility is a hardware test tool in AT-8900, AT-9900, and AT-9900s 
software. Its primary function is to validate that there are no hardware 
problems after installation of the switch or expansion options. You can also use 
it as a troubleshooting tool, but it is just one of many such tools. You could 
consider the test facility to be a specialised interface module, such as PPP or 
Frame Relay, where the interfaces under test are dedicated to the test facility. 


Before you use the test facility, disable configurations by using the 

set configuration=none command, and restart or reboot the switch. For more 
information about the test facility, see the Test Facility chapter in the Software 
Reference. 


Testing Ethernet LAN Ports 


A crossover cable is required to run an Ethernet LAN test. How to make a 
suitable cable is described in “Cables for RJ-45 Ethernet LAN Interfaces” on 
page 30. To start the test, loop a four-pair crossover or straight-through cable 
between two RJ-45 ports and enter the enable test interface=all command. 
Interfaces connected by crossover cables are tested. If a test fails, contact your 
authorised distributor or reseller. 


To display test results, use the show test command. To display detailed output 
with frame counts, use the show test count command. For example output 
from these commands, see the Test Facility chapter in the Software Reference. 
This chapter also contains information on how to test other interfaces. 


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Enabling 
diagnostics mode 


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41 


Diagnostics 


Software for AT-8900, AT-9900, and AT-9900s switches includes a set of 
diagnostic programs that perform basic checks of all system components. 
These diagnostics do not run with normal operating code and require that the 
system be totally dedicated to their use. The switch does not perform switching 
operations when diagnostics are running. 


Caution Diagnostics are designed to be run by service personnel only. This 
section is not intended as a guide to diagnostics software. Detailed knowledge 
of how the switch hardware functions is necessary in order to effectively use 
diagnostic programs. For more information, contact your authorised distributor 
or reseller. 


1. Connect a terminal to the R5-232 terminal port (ASY NO). 


Use a terminal cable to connect a terminal to the RS-232 port (ASYNO) on 
the switch. For more information on terminal cables, see “RS-232 Terminal 
and Modem Cables” on page 29. 


Set the terminal communication parameters as follows: 
e Baud rate: 9600 

e Data bits: 8 

e Parity: None 

e Stop bits: 1 


e Flow control: Hardware 


2. Restart the switch. 


To restart the switch, use a small diameter pin to press the recessed Reset 
button on the front panel of the switch. You can also log in at the terminal 
and enter the command: 


restart reboot 


How to log in is described in the Installation and Safety Guide. 


3. Enable diagnostics mode during self-tests at startup. 


The switch pauses briefly during its self-tests to allow an override. 
For AT-8900 and AT-9900 switches, the following prompt is displayed: 
Force EPROM download (Y)? 
For AT-9900s switches, the following prompt is displayed: 
Boot fallback software (Y)? 


Press Ctrl+D to enable diagnostics mode. Press Ctrl+D once only to ensure 
you send no other characters to the switch. 


42 





A 


Running a 
diagnostic program 


AT-8900, AT-9900, AT-9900s Series Switches 


One of the following menus is displayed depending on the switch model. 
When you see the menu, you know that the terminal is connected. 


Menu for AT-8900 and AT-9900 switches 


“ * * Diagnostic Mode * * * 


version: Nov 10 2004 11:08:34 


Main Menu: 
Restart 
Full RAM test 
ROM checksum test 
Battery backed RAM test 
. Display PCI devices (not shown for AT-8948 models) 
. Watchdog test (not shown for AT-8948 models) 
Enter selection ==> 





Caution If you have an EPROM chip and you perform a full flash test or 
erase flash, you will delete all configuration and release files. We 
recommend that you know how to reload these files before you erase flash 
or perform a flash test. 


Menu for the AT-9900s switch 


Diagnostics Menu: 
Restart 
Full RAM test 
Bootloader ROM checksum test 
Full FLASH test 


Erase FLASH file system 

Battery backed RAM test 

Quick RAM test 

Quit and continue booting 
Enter selection ==> 





Caution If you perform a full flash test or erase flash, you will delete all 
configuration files and the product software that runs the switch. We 
recommend that you know how to reload these files before you erase flash 
or perform a flash test. 


There are several sub-menus that cover the available options. Control keys for 
diagnostic operations are in the following table. 





Key 
Q 


Function 


Quits tests that are running. Displays a banner page or restarts, depending on 
the switch. 


Prints a summary of test results thus far for AT-9900 switches only. 


To restore the switch to normal operation, use a small diameter pin to press the 
recessed reset button on the front panel of the switch, or press 0 to restart. 


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43 


Troubleshooting 


This section provides information on how to troubleshoot AT-8900, AT-9900, 
and AT-9900s switches to resolve the following basic problems: 


What to check first m 


L/A LED on a port is off 
Povver LED is off 
Fault LED is on 


Check power cord connections. 
Check that the power supply voltage is stable. 


Check that the correct data cables are used and that their connections are 
secure. 


Make sure that other network devices work properly. 


Use the show install command to check that the latest software release is 
loaded. The Software Reference describes how to obtain the latest software 
release. 


If the switch malfunctions, reboot it. Either use a small diameter pin to 
operate the recessed Reset button on the switch’s front panel or enter the 
restart reboot command. Alternatively, shut down and restart the switch at 
either the main power source (AC models) or use the Run/Standby switch 
on the PSU (DC models). 


L/A LED ona If the Link/ Activity LED is off, it may indicate the following: 


portisoff , 


a loose data cable 


the device at the other end of the connection does not work properly or is 
turned off 


the data cable is not wired correctly 


the network administrator has manually disabled the port through the 
software 


the port’s selected transmission mode does not match that of the attached 
device 


Follow these suggestions to resolve the problem: 


1. 
2. 


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Make sure the data cable connections are secure. 


Make sure the device at the other end of the connection is powered on and 
works properly. 


Check that the data cable is wired correctly. 


If you can, log in and check the port status. How to log in is described in the 
Installation and Safety Guide. 


If the port is enabled, make sure the transmission speed matches that of the 
connected device (autonegotiating, full or half-duplex). 


If the port is disabled, someone disabled it with the software. Find out why 
before you enable it. 


44 


Povver LED is off 


Fault LED is on 


Additional resources 


AT-8900, AT-9900, AT-9900s Series Switches 


If the power LED is off, it may indicate the following: 
m a loose power cord 
m apower supply failure 


m aFOM is installed in that bay 


Follow these suggestions to resolve the problem: 
1. Check that the power cord connections are secure. 


2. Check that all switches and circuit protection devices are in the “on” 
position. 


3. Ensure that the supply voltage is within the operational range: 
e AC models: 100 V to 240 V AC, 47 Hz to 63 Hz 
e DC models: 40 V to 60 V DC 


If the fault LED is on, it may indicate the following: 
m there is a problem with the switch 
m the switch or management software is malfunctioning 


m ahardware fault is preventing switch startup 


Follow these suggestions to resolve the problem: 


1. Read the descriptions of LED flashing sequences for explanations of what 
to do (see “Switch LEDs” on page 10). 


2. Reset the switch. Use a small diameter pin to press the recessed reset button 
on the front panel of the switch. 


3. Ifyou were attempting to download software or manage the switch over the 
RS-232 terminal port, check that connections between the terminal port and 
local terminal or PC are secure. 


If you cannot access the switch software because of a faulty RS-232 terminal 
port connection, you can still manage the switch by using Telnet or SNMP 
until the problem is resolved. 


4. Download the most current software. The Software Reference describes 
how to obtain the latest software product. 


Other sources of useful troubleshooting information are: 
m www.alliedtelesyn.com 


m the Software Reference, especially the Test Facility chapter 


Software Release 3.0.2 
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Hardvvare Reference 


Document sets 


Contacting us 


Softvvare Release 3.0.2 
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45 


For More Information 


The Documentation and Tools CD-ROM bundled with each switch contains the 
complete document set for AT-8900, AT-9900, and AT-9900s Series switches and 
their power supply units, as well as tools for switch management. The 
CD-ROM includes the following: 


m Software Reference, which provides detailed information on configuring 
the switch and its software 


m Installation and Safety Guide for the switch, which describes how to install 
the switch and includes important statutory and safety information 


m Installation Guide for the power supply unit and fan, which describes how 
to install a PSU and FOM in the switch 


You can also download these documents and updates from 
www.alliedtelesyn.com. 


With locations covering all of the established markets in North America, Latin 
America, and Europe, Allied Telesyn provides localized sales and technical 
support worldwide. To find the representative nearest you, visit us on the Web 
at www.alliedtelesyn.com.