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New Member

Router 2811

I have a problem with cisco 2811 router. For 7 days it worked fine, but after this period I had to restart to force them to work propertly.

I suspect that RAM memory has a problem, but I cann't find memory test command.

Ios version is: 12.4(13r)T


Only existed test commands are:


Router#test ?

Virtual-Template Virtual Template interface

aaa AAA Authentication, Authorization and Accounting

appletalk APPLETALK diagnostic code

arp_retry Test ARP Retry

atm ATM test commands

cac test the l2 cac functionality

call Call test commands

cch323 cch323 tests

cef Cisco Express Forwarding test command

cfmpal CFM test commands

checkpoint checkpoint test commands

cns CNS agents

corrupt-nvram Corrupt NVRAM Magic

cpurmi CPU RMI test commands

crypto Test crypto functions

dot11 IEEE 802.11 test command

dsp Test DSP functions

enum test enum

firewall Test firewall functions

glbp Gateway Load Balancing Protocol test commands

gsi Test gsi

gssapi GSSAPI test code

gt96k Test gt96k timer System

hpi host port interface

ifs IFS TEST code

interfaces Network interfaces

iphc IPHC testing

ipmobile IP Mobility Test commands

lic-agent lic-agent test command

license Test License command

license-parser Test License Parser

lmr Diagnose lmr ports with simulating dsp event

mpls MPLS test commands

oer Test Optimized Edge Routing (OER)

opssl OPSSL Test

ospfv3 OSPFv3 Test options

pasvc PPP over ATM SVC Test Driver

pppatm PPP over ATM SSS Test

pppoe PPPoE test commands

process Create/kill test processes

rtcp Test RTCP SSM

sasl Test SASL code.

save save load monitor snapshot

scp SCP test commands

sctp SCTP test commands

sgbp SGBP test commands

source-group Test Source IP Group

spanning-tree Spanning Tree Subsystem

srtp Test SRTP Libray functionality

ssm SSM test commands

stun STUN Stack test command

sw-vlan Test VLAN Manager feature

tar test tar file system

tdm Test TDM

tms TMS related test commands

token TOKEN Interface

tpu TPU test system

track Object Tracking test commands

translate Protocol translation test function

translation-rule Test translation rule table

trunkgroup Test trunk group

tunnel Test tunnel

urlf Url Filtering

usb USB Interface

voice Voice related test commands

voip-aaa voip-aaa test menu utility


How I can test memory in this case?

Best regards,

Miroslav Petkovic

Hall of Fame Super Gold

Re: Router 2811

Most often router freeze is due to IOS bugs.

You can either connect to console when it freezes to tr to find what's going on, or possibly downgrade IOS in search of a stable image.

New Member

Re: Router 2811

I would start with checking to see if you have the required memory for the IOS version you are using by doing a show version. This will also tell you if your router is recognising the that is installed. It should match the amount that you ordered with your router.

You can also check to see if you IOS is corrupt by using the verify command.

Another thing to do is to boot the router with a terminal emulator connected to the console so you can watch for errors upon booting. If you have a problem with memory it may show here.

I could not find the test memory in my 2811 either so it must have been removed or not be supported on this model router. It is however in the Command lookup tool under 12.4 IOS so the command should exist.

Hope this helps.

New Member

Re: Router 2811

Thank you for this informations.

I didn't notice error message in process of booting router which I monitored by console connection and Hyper Terminal.

I added attachments:

- system boot

- sh version

- verify IOS

If you notice something suspiciously please send me message.


Miroslav Petkovic

Super Bronze

Re: Router 2811

Like Paolo, I too suspect an IOS in such cases, assuming the hardware isn't faulty. In your case, your 2821 is running a recent "T" version but there are a couple of newer versions, including a newer one for the version you're running, 12.4.22T1. You might upgrade, or downgrade to a version of 12.4, which might be a little more stable, if you don't need a feature in the "T" versions. Also, you could update your ROM software, which notes "DRAM access optimization" in the latest.

New Member

Re: Router 2811

I agree if you suspect the IOS then upgrading it might solve your problem so you can try the update 12.4.24 that is out. It may be a bug with one of the features you are using which is hard to tell with the info posted. You may want to check the bug tracking system to see if your specific problem has been reported.

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