On 04.05.2012 18:15, Simone Morandini wrote:
> Hello list,

Hello!
>
> as per the subject, I have a specific peer whose BGP session is not
> stable. It goes from Established to Idle with this error from the birdc
> prompt: "Received: No supported AFI/SAFI".
How often does it happen?
Do you know vendor/software of this peer?
Do you have access to logs/configuration on the other side?
> The logfile says:
>
> 03-05-2012 22:09:47 <TRACE> <peername>: State changed to up
> 03-05-2012 22:09:50 <RMT> <peername>: Received: Malformed attribute list
If this happens frequently you can probable do tcpdump -lnps0 -w 
file.pcap host stangepeer and see (yourself in wireshark) / share with 
us this file to determine what exactly is wrong.
> 03-05-2012 22:09:50 <TRACE> <peername>: State changed to flush
> 03-05-2012 22:09:50 <TRACE> <peername>: State changed to stop
> 03-05-2012 22:09:50 <TRACE> <peername>: Starting
>
> and then
> 03-05-2012 22:27:03 <RMT> <peername>: Received: No supported AFI/SAFI:
> 000101
Cisco sometimes does this after forced disconnect.
E.g.
* session down
* bird -> cisco -> no supported AFI/SAFI
* delay
* cisco -> bird -> OK
>
> What does this refers to? Version of BIRD is 1.3.1 on this machine.
>
> Thanks,
> Simone.
>