[j-nsp] BGP mtu-discovery and current behaviour

[Daniel Roesen]

On Tue, Nov 16, 2004 at 10:28:42AM +0200, Pekka Savola wrote:
> What *is* the current behaviour?  (It might not hurt to have a better 
> description of what mtu-discovery actually does, depending on the 
> current behaviour)

IIRC, it uses an MTU of 5xx

> Checking from my debug logs, it seems that already BGP seems to be 
> sending large packets, as apparently evidenced by grepping BGP debug 
> logs and looking for BGP updade lengths, and noting things like:
> 
> Oct 14 09:06:49 BGP SEND message type 2 (Update) length 3068

That's the update size, not the TCP packet size on-wire. This update
will be fragmented in multiple packets of MTU size at max.


Best regards,
Daniel

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