Well...if the vpls tunnel is carrying a packets having a c-tag (c-vid) and s-tag (s-vid/q-in-q), I am bittt.... confused that...the c-tag might get override when in traverse through a MPLS backbone if two or more MPLS router is connected via L2 802.1 vlanned switch??
But my understanding is it should not...because the c-tag and s-tag or whatsoever like b-vid.....it..would be considered as a payload when it enters the MPLS network.Appreciate if someone comment or confirm this.. Regards, Samit David Hughes wrote: > On 27/04/2010, at 7:32 AM, Paul Stewart wrote: > >> We are getting ready to deploy some equipment (mixture of Cisco/Juniper) >> that is MPLS capable. We'd like to transport some VPLS traffic however in >> the middle of a few of the links are layer2 switches - we've been told this >> isn't possible even with 1600 MTU frame size supported.... Juniper is >> telling us (in one particular segment) that we must hang MX gear in there to >> make it work with MPLS... > > We run some EoMPLS vc's over MPLS links that traverse a layer2 only device. > No problems as long as the switch MTU can handle the packet size. All our > end-systems are connected at 1500 MTU so there's no issue as long as the L2 > kit is recently new. > > > David > ... > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
