The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: AW: ECMP and Reordering within MPLS domain
Jan, Missed your email earlier. :) Anyhoo, if the underlying packet is IP, then we hash IP src/dest for the loadsharing. If the underlying data is not IP (especially l2vpn traffic), then we hash the VC-label for the loadsharing. So both of the hashing mechanisms are used in either-or cases, not together. Cheers, Rajiv At 09:56 AM 3/12/2003, Sandmaier, Jan wrote: >Rajiv, are you sure? AFAIK the Cisco (and Juniper's) implementation uses a >hash from IP adresses and Label stack for per destination load balancing. > >Jan > > > In Cisco's MPLS implementation, the default behavior is to > > use IP src/dest > > based loadsharing (as it has been done in the pure IP case). > > [ However, one could also configure the per-packet based > > loadsharing, if > > required. ] > > > > At 03:24 AM 3/10/2003, M. ELK wrote: > > > > >Hi > > > > > >say for a P (say P1) having 2 ECMP (Equal Cost Multi Path)to > > certain PE > > >(say PE1) . > > >The incoming labeled packet recieved at P1 with destination to PE1 > > >MAY/Could be load balanced between the 2 path toward PE1 . > > > > > >Possible option for load balance : > > >A- No load balancing . P1 will always use a single path toward PE1. > > >B- Per labeled_packet load balancing ,introducing reordering pblm . > > >C- Per hashing based on the "label stack + Ip dest addr + IP > > src addr " > > > > > > > > >Which option is actually used/implemneted mainly by cisco > > and Juniper ? > > > > > >Brgds > > > > > > > > > > > > > > > > > >_________________________________________________________________ > > >Add photos to your e-mail with MSN 8. Get 2 months FREE*. > > >http://join.msn.com/?page=features/featuredemail > > > > > >------- > > >The MPLS-OPS Mailing List > > >Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml > > >Archive: http://www.mplsrc.com/mpls-ops_archive.shtml > > > > ------- > > The MPLS-OPS Mailing List > > Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml > > Archive: http://www.mplsrc.com/mpls-ops_archive.shtml > > ------- The MPLS-OPS Mailing List Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
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