[c-nsp] malloc failures disabling dCEF on GSR

[Peter Kranz]

Along these lines,
	Can anyone point out some general guidelines to assess GSP memory
happiness, i.e. what is the best way to assess if your getting close to a
low memory situation, how does one decide if adding another BGP peer with
full routes is going to cause trouble, etc...

Peter Kranz
Founder/CEO - Unwired Ltd
Mobile: 510-207-0000
pkranz at unwiredltd.com        


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Neil J. McRae
Sent: Wednesday, August 03, 2005 6:09 AM
To: 'Adam Chappell'; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] malloc failures disabling dCEF on GSR

Yes - ask James ;) 

You need to hook up to the console port or onboard GRP
ethernet port as you can't telnet in as there is no routeing.


Neil.

> Does anyone on this list have practical experiences of 
> dealing with low memory situations on a GSR?
> 
> Fragmentation eventually gets the better of this box and when 
> malloc fails, DCEF on the line cards is disabled in sympathy.
> 
> The net result is the GSR just sitting there not able to pass 
> or receive any IP traffic until I can get a field tech to 
> power cycle it.
> 
> Aug  3 08:01:23 -Process= "BGP Router", ipl= 0, pid= 169 Aug  
> 3 08:01:23 -Traceback= 5011E380 50135F10 5057C880 5054A348 
> 5055432C 505544D8 507E8934 507E9580 50E17854 507E9610 
> 507AF594 Aug  3 08:01:23 %FIB-3-NOMEM: Malloc Failure, 
> disabling DCEF Aug  3 08:01:57 %SYS-2-MALLOCFAIL: Memory 
> allocation of 65536 bytes failed from 0x50236564, alignment 0 
> Aug  3 08:01:57 Pool: Processor  Free: 1660428  Cause: Memory 
> fragmentation Aug  3 08:01:57 Alternate Pool: None  Free: 0  
> Cause: No Alternate pool
> 
> I realise the box obviously needs more RAM but some sort of 
> feature where I can get the box to crash and reload if it 
> cant malloc would at least mean less downtime.  Is anyone 
> aware of anything like this?
> 
> Thanks.
> 
> -- Adam.
> 
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