Sporadic Internet access interruptions

[mahesh18]

Hi Everyone,

On Clients Internet router we see these logs

232900669: 283644183: Jan 16 08:34:44 UTC: %SYS-2-CHUNKEXPANDFAIL: Could not expand chunk pool for FW sis. No memory available -Process= "Chunk Manager", ipl= 4, pid= 1

Need to know if router has any memory issues?

Telnet to Router is also taking time.

Regards

Mahesh

[John Blakley · Accepted solution]

It's possible. Something in the router is requesting memory, but it's not able to allocate it. Can you post "sh ver", "sh mem" and "show proce" when you are able to get in? It could be a bug in IOS as well (reason for sh ver).

HTH,
John

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[mahesh18]

Hi John,

I have added the output to the original post.

Regards

MAhesh

[John Blakley · Accepted solution]

Mahesh,

Does this router run a zbfw or cbac? I'm having a hard time finding a bug, but the "FW sis" indicates that it could be firewall related. Possibly too many connections? You could update the IOS to see if it resolves the issue. Most of the time it's software related.

HTH,
John

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[mahesh18]

Hi John,

This Router has ip inspect session enabled so it is running cbac.

Regards

Mahesh

[Reza Sharifi · Accepted solution]

Hi Mahesh,

This maybe a bug in the IOS that does not allow memory allocation/expansion.  I would try a different version of IOS, before deciding if there is any hardware issue.

HTH

Reza

[mahesh18]

Hi Reza,

IT was working fine from last sometime.

We rebooted the router and this has helped to free up the memory.

Regards

Mahesh

[John Blakley · Accepted solution]

Mahesh,

I would recommend updating the IOS. You may never see the problem again, but it could also get worse.

HTH,
John

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[Leo Laohoo · Accepted solution]

I will agree with the rest, Mahesh. 

This could be a potential IOS fault and will get worst.  It was working awhile now because the memory was still controllable however the process didn't know how to "return" un-used memory back to the pool until now. 

Try upgrading the IOS.  You might see some relief. 

[mahesh18]

Hi Everyone,

Thanks for all the replies.

Will upgrade the IOS as issue occur few times.

Regards

Mahesh

[Leo Laohoo]

Thanks for taking the time to rate our posts, Mahesh.