[29201] in North American Network Operators' Group
RE: PMTU-D: remember, your load balancer is broken
daemon@ATHENA.MIT.EDU (jhsu@mur.com)
Wed Jun 14 18:30:54 2000
Date: Wed, 14 Jun 2000 18:14:22 -0400 (EDT)
From: jhsu@mur.com
Message-Id: <200006142214.SAA04073@rathe.mur.com>
To: deepak@ai.net
Cc: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu
:
: Then again, at least some Cisco gear doesn't think that.
:
: perdition>sh in g0/1
: GigabitEthernet0/1 is up, line protocol is up
: Hardware is Gigabit Ethernet, address is 00d0.7966.eeae (bia 00d0.7966.eeae)
: MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 24/255
the last i checked, 1500 was the default. given the right hw & sw,
MTU can be adjusted upward. i seem to remember seeing it demonstrated
on 12000 gear.
there is a draft [draft-kaplan-isis-ext-eth-02.txt] that discusses
some extensions useful to support large frames. these extensions- again,
the last i checked- were supported by cisco, and other vendors.
as always, contact your authorized support rep when in doubt.
ymmv,
_k
