The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] RE: Bridging on an MPLS network....
At 01:03 PM 2/21/2002 -0800, Arun M. Thomas wrote: >Thanks to all who responded on original question and follow up regarding >this issue. To summarize the responses I received.... > >Given an MPLS LSP: (Ingress) A --> B --> C (Egress) > >Packets labelled for this LSP by A will be switched along this LSP. >However, if there is a lower level MPLS unaware network backing this MPLS >network, then packets could be bridged during transit from A to B and from B >to C. This will result primarily in increased latency through the network, >and should have no other effect. ...assuming that the switches don't have a problem dealing with the larger MTUs of MPLS-labelled Ethernet frames. Cheers, Mathew >Thanks again! >-AMT > >-----Original Message----- >From: Wade Edwards [mailto:wade.edwards@powerupnetworks.com] >Sent: Thursday, February 21, 2002 6:44 AM >To: Arun M. Thomas >Cc: .Mail List: MPLS Ops >Subject: RE: Bridging on an MPLS network.... > > >You stated that 1, 2 and 3 could be bridges rather than routers. Just >want to make sure this is clear. They have to be bridges and cannot be >routers, in the traditional layer-3 sense. If they were routers, >traditional layer-3 devices that don't understand MPLS labels, they >would not know what to do with the labeled packets and would drop them. >Just making sure we are on the same page. > >L8r. > > >------- >The MPLS-OPS Mailing List >Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml >Archive: http://www.mplsrc.com/mpls-ops_archive.shtml | Mathew Lodge | mathew@cplane.com | | Director, Product Management | Ph: +1 408 789 4068 | | CPLANE, Inc. | http://www.cplane.com | ------- 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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