[c-nsp] 7206VXR Crashing on BGP full feed

[Rodney Dunn]

It is possible this is a software bug but it's very very unlikely.

I recognize this value: 0xAB1234CE.

It should be AB1234CD. You have a single bit flip so I'd put
my money on memory.

I've seen single bit flips be software before but only about twice
in 8 years.

Rodney

 

On Mon, Oct 31, 2005 at 12:57:20PM +1100, Skeeve Stevens wrote:
> 
> We've had a couple of incidents where a Cisco 7206VXR with 512MB of RAM has
> crashed when reaching about 160k routes on a particular peer.
> It happened when there was only 2 peers and 1 changed to a full feed, and
> also happened when 2 were peering feeds and a new full feed was added.
> 
> The bus error below. Can anyone help me translate what it might actually
> mean?
> 
> .Skeeve
> 
> 
> Rtr01-gw uptime is 15 minutes
> System returned to ROM by bus error at PC 0x60869928, address 0xAB1234CE at
> 01:32:47 AEST Mon Oct 31 2005
> System restarted at 01:35:13 AEST Mon Oct 31 2005
> System image file is "disk1:c7200-ik9o3s-mz.123-14.T3.bin"
> ...
> Cisco 7206VXR (NPE400) processor (revision A) with 491520K/32768K bytes of
> memory.
> Processor board ID 16065817
> R7000 CPU at 350MHz, Implementation 39, Rev 3.2, 256KB L2 Cache
> 6 slot VXR midplane, Version 2.0
> 
> Last reset from power-on
> 
> PCI bus mb0_mb1 (Slots 0, 1, 3 and 5) has a capacity of 600 bandwidth
> points.
> Current configuration on bus mb0_mb1 has a total of 400 bandwidth points. 
> This configuration is within the PCI bus capacity and is supported. 
> 
> PCI bus mb2 (Slots 2, 4, 6) has a capacity of 600 bandwidth points.
> Current configuration on bus mb2 has a total of 200 bandwidth points 
> This configuration is within the PCI bus capacity and is supported. 
> 
> Please refer to the following document "Cisco 7200 Series Port 
> Adaptor Hardware Configuration Guidelines" on CCO <www.cisco.com>, 
> for c7200 bandwidth points oversubscription/usage guidelines.
> 
> 
> 3 FastEthernet interfaces
> 125K bytes of NVRAM.
> 
> 8192K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
> 125952K bytes of ATA PCMCIA card at slot 1 (Sector size 512 bytes).
> 4096K bytes of Flash internal SIMM (Sector size 256K).
> Configuration register is 0x2102
> 
> 
> _______________________________________________________
> Skeeve Stevens, RHCE     Email: skeeve at skeeve.org
> Website: www.skeeve.org  - Telephone: (0414) 753 383
> Address: P.O Box 1035, Epping, NSW, 1710, Australia
> 
> eIntellego - skeeve at eintellego.net - www.eintellego.net
> _______________________________________________________
> I'm a groove licked love child king of the verse
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> 
> 
> 
> 
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