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From: Bjørn Mork (no email)
Date: Fri Nov 07 2008 - 04:32:36 EST
David Freedman <> writes:
> Implementing this in an MPLS core is not an easy task, you can really
> only do this on the edge, when the MPLS labelled packet arrives at an
> LSR, we don't know if it contains a TCP segment or not (fancy deep h/w
> implementations excluded), all we know is that , if there is congestion,
> we can discard it based on the EXP bits in the shim.
Please see RFC 5129
Bjørn
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