David Freedman david.freedman at
Fri Nov 7 11:00:07 UTC 2008

Interesting , I hadn't followed this since draft-ietf-mpls-ecn-00,
, I eagerly await a vendor implementation :)


Bjørn Mork wrote:
> David Freedman <david.freedman at> 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

More information about the NANOG mailing list