> Any two hosts, connected to single Layer2 network MUST use
> same MTU. Any other cases lead to hard-to-solve problems.
I'd have to disagree. In fact, I'd say that any two hosts on the
same L2 network must use the same MRU. In particular, if a host
choses to use a lower MTU, if that also lowers the MRU, *that* is
the cause of interoperability problems.
David DeSimone <[EMAIL PROTECTED]> wrote:
} You are correct about misconfigured networks. In my experience,
} the only reason to ever reduce the MTU is to work around a problem
} discovered in someone else's network (not my local segment). Fixing
} the problem by getting someone else to fix their network is generally
} too hard. If MTU == MRU was forced behavior, the viability of this
} workaround would be removed, one less tool in the toolbag, so to speak.
Exactly. In our local labs, we also reduce the MTU to test PMTU discovery.
Requiring MRU == MTU makes this more difficult. True, it's a contrived
situation, but as you say, one less tool in the toolbag.
Mike
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