[c-nsp] Cisco MultiLink PPP

Dennis Peng dpeng at cisco.com
Fri Mar 25 13:43:09 EST 2005


Jon Lewis [jlewis at lewis.org] wrote:
> On Fri, 25 Mar 2005, Dennis Peng wrote:
> 
> > > >> were having.  Am I right in thinking that MLPPP avoids the sort of
> > > >> out of order packet arrival that per-packet cef load sharing can
> > > >> cause?...while still doing nearly perfect load sharing across a
> > > >> number of T1s?
> > > >
> > > > Yes, both true..
> 
> With framentation disabled and Nx parrallel/identical T1 circuits in the
> multilink bundle, are those assumptions (really just the ordering) still
> [supposed to be] true?

Yes, even with fragmentation disabled, the packet is still sent with
the multilink headers which contain the sequence number. This allows
us to maintain the ordering of the packets.

Dennis
 
> For the POP I converted, which is now a 4 T1 multilink group, I'm seeing
> as close to perfect load sharing as can be measured.
> 
> ----------------------------------------------------------------------
>  Jon Lewis                   |  I route
>  Senior Network Engineer     |  therefore you are
>  Atlantic Net                |
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