standby CSM go hanging silently.

[drazik]

standby CSM go hanging. without log message.

and no output for CSM command that "show mod csm 9 vser, show mod csm 9 real" and can't connect vserver on this CSM...

[Gilles Dufour]

what does 'sho mod 9' says about the module status ?

Do you have more than 1 csm in this chassis ?

How many msfc ?

What software version for the csm ?

Was this csm working before ?

Can you bring the csm up again with a reset ?

If so, how long does it take for the problem to show up again ?

Gilles.

[drazik]

what does 'sho mod 9' says about the module status ?

-> yes. show module 9 status

Do you have more than 1 csm in this chassis ?

-> yes 2 CSM and 2 Cat6509 with Active/standby

How many msfc ?

-> 2 MSFC in 1 chassis.

What software version for the csm ?

-> 3.1(3)

Was this csm working before ?

-> yes working. and now working after module reset.

Can you bring the csm up again with a reset ?

If so, how long does it take for the problem to show up again ?

-> Now working with standby well but

output of that " show mod csm 9 arp" is so strange.

192.168.250.176 00-00-00-00-00-00 0 LEARNED down(4 misses)

192.168.249.247 00-00-00-00-00-00 0 LEARNED down(4 misses)

192.168.159.42 00-00-00-00-00-00 0 LEARNED down(4 misses)

192.168.139.243 00-00-00-00-00-00 0 LEARNED down(2 misses)

192.168.143.213 00-00-00-00-00-00 0 LEARNED down(3 misses)

192.168.155.107 00-00-00-00-00-00 0 LEARNED down(2 misses)

192.168.158.100 00-00-00-00-00-00 0 LEARNED down(0 misses)

192.168.166.43 00-00-00-00-00-00 0 LEARNED down(2 misses)

192.168.157.147 00-00-00-00-00-00 0 LEARNED down(3 misses)

this ip address is not direct connected address..

[Gilles Dufour]

I would recommend an upgrade to the latest 3.1 version

I believe it is now 3.1(8).

There are a few hangs problem that have been fixed.

Here is an example :

CSCea69875: IP packet with bad header length causes the system to hang

The arp info might indicate the begining of a problem.

Check the ixp cpu utilisation with 'sho mod csm 9 tech util'. If one of them is stuck at 100% this is a problem.

Once again, with 3.1(3) we have a few hangs and they got fixed in later versions, so I recommend upgrade to 3.1(8) or later.

Regards,

Gilles.

[jfoerster]

HI,

what is the sh mod csm 9 serverfarms det telling you? I experienced with some older versions, that servers which are not directly connected to the CSM (same VLAN) but are layer3 hops away that they have problems getting actived. As soon as I assigned a probe using ICMP this issue was solved.

Hope that helps.

Kind Regards,

Joerg