02-19-2002 06:13 PM - edited 03-12-2019 02:29 PM
Hi all,
I have two Cisco 1750 routers at 2 remote sites running VOIP that qos & rtp compression commands are used but one of the routers seems to "hang" occasionally each time(not every time) it accepts an incoming telnet session, since then I cannot ping the router and it will sometimes reboot itself and sometimes remains "hang" until cold rebooted locally.
A partial output of "show version" shows:
Router uptime is 16 minutes
System returned to ROM by error - a SegV exception, PC 0x8083A98C at 14:29:55 CST Tue
Feb 5 2002
System restarted at 09:46:06 CST Wed Feb 20 2002
System image file is "flash:c1700-sv3y-mz.121-3.T"
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My question is Have you VOIP experts encountered this before? Is this a hardware issue? I am particularly puzzled with the meaning of "SegV exception, PC 0x8083A98C" error, which seems to have appeared after I issued rtp compression commands on the router (but no such symptom for the other router)
Any ideas why?
Many thanks in advance,
Goku
02-19-2002 06:54 PM
I have not seen an issue like this before. If you are getting a segv and it is crashing the router I suggest opening a TAC case to troubleshoot the crash. Did you notice if when you put on the rtp header compression is the command tcp header compression also being added? I have seen this before and you can try removing the tcp header compression.
Hope this helps,
-Mckee
02-19-2002 09:14 PM
As far as I know, you can't remove tcp header-compression without rtp header-compression also being removed.
You should definitely call TAC about this problem so they can look at the stack trace and determine if this is a known issue. You are definitely not running ideal code.
02-20-2002 12:38 AM
Thanks gentlemen,
Asthe encapsulation used is frame-relay, I am free to add/remove "frame ip rtp header" or "frame ip tcp header" on the sub i/f of serial port.
However I do wonder according to common practice if the "rtp/tcp header" commands should be issued also on the serial port, apart from the sub-i/f concerned.
TIA,
Goku
02-20-2002 07:14 AM
Hi!
I've deployed a solution very simliar to yours.
Two 1750 running VOIP and Crypto tunnels.
I configured MLPPP with CRTP, LFI and it works excelent. I've just checked, and both are running without problems for 6 weeks.
The IOS installed is c1700-k8sv3y-mz.122-5.bin
02-20-2002 08:30 AM
From my expiriance implementing many gateways on various platforms is whenever gateway reboots itself it could be an issue of insufficiant memory.
Please check that...
02-20-2002 09:24 AM
I'm not sure about what happens in your case. But I'd ask you why you run such an old release. Why don't you download something like 12.2(1) or better?
Also, I have found several bugs regarding RTP header compreesion on the Cisco platform. So, going to a newer release could help you in this issue too.
02-21-2002 04:55 AM
Gentleman, I told you that I've do this, and it WORKS PERFECCT.
If you see my previous email, you will find the IOS that I'am using, so I recommend to change the version and try again.
02-21-2002 08:35 AM
Hi salata,
I've changed the ios image to a newer version(though not as new as yours) and is observing if it will malfunction again..
Thanks,
Goku
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