> > You really need a switch which supports path discovery.
>
> In general, I haven't seen or read much discussion on PMTU discovery at the
> link layer. My gut feel is that it would be something proprietary if it
> did exist.
When I say a switch, I mean in the generic term. So it would have to
be layer 3.
> Traditional PMTU works at the network layer (IP) where datagrams cross link
> boundaries. The RFC that describes doing PMTU discovery basically says try
> sending smaller datagrams until they start getting through.
Actually, it only tries smaller packets if it receives a fragmentation
needed ICMP packet back from a router along the path.
Received on Thu Mar 15 13:44:43 2007
This archive was generated by hypermail 2.1.8 : Thu Mar 15 2007 - 13:44:50 CST