Similar to the recent nanog thread:
CSCdk30915
BGP: notification not processed before resetting
Product all Model
Component bgp Duplicate of
Severity 3 Status R
Version Found 11.1(20)CC
Fixed-in Version 12.0(1) 11.1(21)CC 11.1(21)CT
Release Notes
Some notification messages are not processed before resetting.
This seems to occur in peering with certain non-cisco boxes.
As we rely on the notification message from a peer to automatically
backoff with the capability feature, this bug may cause such
peers not to be established.
The workaround is to configured "neighbor x.x.x.x dont-capability".
-danny
>
> Hi
>
> I got a problem peering with a Bay-router running ver. 11.03rev4. After
> peering for month with IOS 11.2(7), I'd loaded IOS 11.1(20)CC for running
> CEF on my Cisco, the BGP session never came back with the BAY router. It
> is working to all my Cisco neighbor's.
>
> Debugging on the BAY, say as follow.
>
> packet source
> 278 Bay-router BGP Open without options
> 280 Cisco-router BGP Open with option type 2 (len = 6bytes: 01 04
> 00 01 00 01)
> 281 Bay-router BGP Open_message_error: unsupported option
> 282 Bay-router TCP FINACK
> 283 Cisco-router TCP ACK
>
> Hmmmmm ..... any idea ?????
>
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