The MPLS WG Archive

[Eric Gray <ewgray@mindspring.com>]

Brandon,

    The point is that it does not make sense to argue
that a new mechanism is needed because the current
one doesn't get used.  I do not feel that the argument
is valid regardless of the validity of the assumption on
which it is based.

--
Eric Gray

Brandon Ross wrote:

> On Thu, 14 Dec 2000, Eric Gray wrote:
>
> > If the major market leaders do not feel that it is necessary to support
> > one mechanism to do MTU discovery, what is to make anyone feel that they
> > will support a new one?
>
> Because if that's the case (and I'm not convinced it is), then it's
> fundamentally and operationally broken.  PMTU will not work if the ingress
> LSR does not either fragment packets to fit through the LSP or in the case
> of DF packets, drop and send ICMP needs fragmentation messages.
>
> I do know for a fact that Juniper's GRE functionality is broken for
> similar reasons, or at least it was the last time I tried it.
>
> Brandon Ross                                                 404-522-5400
> EVP Engineering, NetRail                           http://www.netrail.net
> AIM:  BrandonNR                                             ICQ:  2269442
> Read RFC 2644!