Hi All, Below is the network topology, i ping from CE-2 to CE-1, during i shutdown the PE-4, have some packet drops. CE connect to the backbone network using HSRP, the hear beat is through the CE switch. PE-1 and PE-3 is the active gateway, PE-2 and PE-4 is the standby one.
PE equipment running OSPF as IGP, then on the top having MP-iBGP, MPLS VPN, MPLS TE auto-tunnel. Normally i send traffic from CE-2 to CE-1 will use the path "CE-2>PE-3>PE-1>CE-1". The active tunnel from PE-3 to PE-1 is directly path, the backup tunnel is path through PE-4 to PE-2 to PE-1. So when i shutdown the router of PE-4, the active tunnel should be no impact, but there is some packet drops. Don't understand why. Firstly, i think it because of the HSRP, then i ping from PE-3 to CE-1 (Under vrf) when i shutdown PE-4, but the result is also have packet drops. So i think is because of backbone network converge. But i am not sure which part will need to converge. <--CE-1--> | | | | | | PE-1----PE-2 | | | | | | PE-3----PE-4 | | | | | | <--CE-2--> Will appreciate for any comments. Best Regards, Hu Xu _______________________________________________ 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/