[c-nsp] two quick bgp questions

Mikael Abrahamsson swmike at swm.pp.se
Mon Feb 14 11:52:34 EST 2011


On Mon, 14 Feb 2011, tim wrote:

> Question:  What if the POS links fails?  If a bigger BGP update occurs, 
> is the path-mtu-discovery "fast enough"?  Does someone has experience 
> here and can give me a recommendation?

If PMTUD is enabled a ICMP message should be generated telling the sending 
host to fragment the packet or otherwise handle that the MTU has changed.

If you're correctly configured this is nothing to worry about. It should 
be handled within fraction of a second.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se


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