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Re: Reopening jumbo frames in IS-IS
- To: Stephen Sprunk <stephen at sprunk.org>
- Subject: Re: Reopening jumbo frames in IS-IS
- From: Bob Hinden <bob.hinden at nokia.com>
- Date: Fri, 15 Jul 2005 14:54:11 -0700
- Cc: rtg-dir at ietf.org, Radia Perlman <Radia.Perlman at sun.com>, Bob Hinden <bob.hinden at nokia.com>, iesg at ietf.org, routing-discussion at ietf.org, curtis at faster-light.net, Brian E Carpenter <brc at zurich.ibm.com>, Scott Bradner <sob at harvard.edu>
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Stephen,
It also avoided having to build things like a FDDI/Ethernet bridge I once
heard about that supported IP fragmentation. I bet you remember that :-)
Wait a minute... If Ethernet supported jumbo frames, the FDDI-Ethernet
bridge wouldn't have needed to support fragmentation -- just set the
Ethernet side's MTU to 4470 and all would be well.
That was back in the days of 10M Ethernet and it didn't support jumbo
frames. Seems to me the issue would still occur unless both FDDI and
Ethernet (w/ jumbo frames) both had the same max MTU. Someone would want
to use the max of the bigger of the two.
Bob
p.s. I also find it ironic that in the other side of the house there are
folks who think 53 byte packets are ideal :-)