[c-nsp] Stranges with BGP

[Ben Crocker]

There's been more than one bug to do with this but perhaps this one 
applies,

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CSCdr54230 : BGP:attribute length truncated + command to limit AS_PATH 
size

Hope it helps,


On Dec 13, 2004, at 12:29 PM, Alexey Luckyanchikov wrote:

> Hi.
>
> Today I observed strange flapping between two 7513. Log from one side
> (software version - 12.2(14)S9):
> Dec 10 23:05:24: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> Dec 13 11:39:59: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> Notification sent
> Dec 13 11:39:59: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> 1/2 (illegal header length) 0 bytes
> Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> Notification sent
> Dec 13 11:40:29: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> 3/1 (update malformed) 31 bytes CA1A5B12 83000000 00D456E5 B1D45646 F5
> Dec 13 11:40:29: BGP: 195.248.160.210 Bad attributes FFFF FFFF FFFF 
> FFFF FFFF FFFF FFFF FFFF 0073 0200 0000 4540 0101 0240 0204 0201 21F2 
> 4003 04C3 F8BF 9680 0404 0000 0000 4005 0400 0000 5AC0 0804 EC17 BDBA 
> CA1A 5B12 8300 0000 00D4 56E5 B1D4 5646 F5D4 56
> Dec 13 11:40:55: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> Dec 13 11:43:56: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> Notification sent
> Dec 13 11:43:56: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> 4/0 (hold time expired) 0 bytes
> Dec 13 11:44:24: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> Dec 13 12:08:05: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> Notification sent
> Dec 13 12:08:05: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> 1/2 (illegal header length) 0 bytes
>
> And from another (software version - 12.2(14)S10):
> Dec 13 11:39:59: %BGP-3-NOTIFICATION: received from neighbor 
> 195.248.160.167 1/2 (illegal header length) 0 bytes
> Dec 13 11:39:59: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> Notification received
> Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
> Dec 13 11:40:29: %BGP-3-NOTIFICATION: received from neighbor 
> 195.248.160.167 3/1 (update malformed) 31 bytes CA1A5B12 83000000 
> 00D456E5 B1D45646 F5
> Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> Notification received
> Dec 13 11:40:55: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
> Dec 13 11:43:56: %BGP-3-NOTIFICATION: received from neighbor 
> 195.248.160.167 4/0 (hold time expired) 0 bytes
> Dec 13 11:43:56: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> Notification received
> Dec 13 11:44:24: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
> Dec 13 12:08:05: %BGP-3-NOTIFICATION: received from neighbor 
> 195.248.160.167 1/2 (illegal header length) 0 bytes
> Dec 13 12:08:05: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> Notification received
> Dec 13 12:08:35: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
>
> Manual session reset help - flapping stopped. I can't find any
> appropriate to this issue in Bug Navigator. Do you have any ideas about
> what it was?
>
> -- 
> Sincerely,
> Alexey Luckyanchikov
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>
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