On Sun, 2019-03-24 at 04:13 +0100, Ondrej Zajicek wrote:
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On Fri, Mar 22, 2019 at 09:24:58PM +0100, Piotr Marciniak wrote:
Cisco switches require this for proper OSPF operation, if MTU is set different on equipment. But afaik it does not hit Bird. We have such sessions between Cisco and Bird. And works fine without this setting on Bird. But maybe therr is scenario we have never met but Kenth did?Best wishes,Peter
We have a bug in older versions of BIRD that it does not verify that MTU of both sides is the same. We fixed that in the latest versions.
How does bird handle transmission of OSPF packets packets larger than the link MTU? Does it rely on IP fragmentation? Or can it split into multiple protocol packets? What is the expected bird behaviour if the link mtu is different of the two sides?
-- Elen sila lumenn' omentielvo
Ondrej 'Santiago' Zajicek (email: santiago@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."