hi i have a multicast problem in the following topology;
TOPOLOGY: Msource -> R1(SVI 10) ---trunk--- (SVI 10) R2 ---routed--- R3 ......Rn ... Receiver - R1(7613), R2(7609), R(7613) / IOS SRA3 / WS-SUP720-3BXL - 10G link between them in WS-X6704-10GE linecards with DFC - trunk between R1 and R2, link routed between R2 and R3 - SVI 10 has "ip pim sparse-mode" and "mpls ip" so R1 is PE router and R2,R3 ...Rn are P routers. - routed links between P routers has "ip pim sparse-mode" and "mpls ip" - Msource (multicast source) interface from R1(routed) is configured in vrf XXX - BGP address-family ipv4 mdt configured on R1 (and all other PE) PROBLEM: all multicast traffic goes to RP on R2 (is software processed), CPU load increase, etc ... although all 76xx (P routers) are identically configured (regarding multicast), on R2 (the one with the problem) we could NOT see this line: P-router#sh mls ip multicast summary | i mvpn Hardware shortcuts for mvpn mroutes supported WORKAROUND: Suspecting that "ip pim" on SVI might be the problem, i've changed the topology with a routed link between R1 and R3 and the problem was solved. NEW TOPOLOGY: Msource -> R1 ---routed--- R3 ......Rn ... Receiver Unfortunatelly, i could not afford to change the link between R1 and R2 from trunk to routed and keep R2 with multicast traffic flowing through it. Have anybody of you ever experienced the same ? Any advice ? thank you, liviu. _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/