As long as the ip mtu is the same on all the interfaces running OSPF all is fine.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Chris Wopat Sent: lundi 21 décembre 2009 22:43 To: [email protected] Subject: [c-nsp] IP MTU setting + OSPF I'm changing MTU on some 7200s with PA-FE's to 1530 with the "mtu 1530" command on the interface. To get OSPF to neighbor with a 2800 (no user settable MTU), I've put "ip mtu 1500" on the 7200. In my testing this works fine. Does this in any way prevent the 7200 from generating an OSPF packet that's larger than 1500 and potentially breaking things down the road? The following links have been helpful for MTU descriptions but I'm not seeing the answer to this question in there. - http://puck.nether.net/pipermail/cisco-nsp/2006-June/031765.html - http://puck.nether.net/pipermail/cisco-nsp/2008-April/049365.html - http://www.cisco.com/en/US/tech/tk827/tk369/technologies_white_paper09186a00 800d6979.shtml - http://blog.ioshints.info/2007/10/tale-of-three-mtus.html These MTU changes are being made as MPLS preparations. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
