Re: [Sigtran] Clarify SCTP max packet size.

["David Laight" <David.Laight at ACULAB.COM>]

> Tell Vendor B to learn to read (RFC 1122) before coming
> back as well.  MTU must be configurable on an interface.

The problem I see here, is that it is the path-mtu that
has to be 1400, not in interface mtu.
All you are likely to be able to do on 'B' is set the interface mtu.

IIRC IP only requires 576 (or so) bytes, 1500 is the standard
ethernet mtu, but for PPPoE the mtu is a few byte shorter (1492?).
so if SCTP actually requires 1500 it will never work over PPPoE.

Any equipment attached to a physical ethernet cable that can't
receive maximal length ethernet packets seems very non-conformant!
(Using it probably requires that ALL systems on that network use
the smaller mtu.)

	David

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