Hi,
I have a problem with explicit joining of a multicast group if such group is already created on the switch. MX seems to reject IGMP joins and only after router igmp query to "all host" this group can be joined. There is no problem if the group does not exist yet. 1. There is no 239.239.2.2 and the group can be joined: 09:36:20.969250 IP 10.202.71.229 > 239.239.2.2: igmp v2 report 239.239.2.2 Group: 239.239.2.2 Source: 10.200.200.203/32 Upstream interface: ge-5/1/4.0 Session description: Organization-Local Scope Statistics: 454 kBps, 337 pps, 7845 packets Next-hop ID: 0 Upstream protocol: PIM Route state: Active Forwarding state: Pruned Cache lifetime/timeout: 360 seconds Wrong incoming interface notifications: 0 2. When the group 239.239.2.1 exists: Group: 239.239.2.1 Source: (null)/0 Upstream interface: ge-5/1/4.0 Downstream interface list: xe-4/1/0.0 Session description: Organization-Local Scope Statistics: 0 kBps, 0 pps, 0 packets Next-hop ID: 1048926 Upstream protocol: MVPN Route state: Active Forwarding state: Forwarding Cache lifetime/timeout: forever Wrong incoming interface notifications: 6 Group: 239.239.2.1 Source: 10.200.200.203/32 Upstream interface: ge-5/1/4.0 Downstream interface list: xe-4/1/0.0 Session description: Organization-Local Scope Statistics: 637 kBps, 474 pps, 350407 packets .... 09:39:55.236311 IP 10.202.71.229 > 239.239.2.1: igmp v2 report 239.239.2.1 09:39:55.236311 IP 10.202.71.229 > 239.239.2.1: igmp v2 report 239.239.2.1 above joins are ignored and the: "Wrong incoming interface notifications: 6" counter is increased. 3. When the MX sends 09:41:15.136068 IP 10.202.71.225 > 224.0.0.1: igmp query v3 and the host responds with: 09:41:24.071645 IP 10.202.71.229 > 224.0.0.22: igmp v3 report, 4 group record(s) 239.239.2.1 is joined Group: 239.239.2.1 Source: (null)/0 Upstream interface: ge-5/1/4.0 Downstream interface list: ge-5/0/0.797 xe-4/1/0.0 Session description: Organization-Local Scope Statistics: 0 kBps, 0 pps, 0 packets Next-hop ID: 1048806 Upstream protocol: MVPN Route state: Active Forwarding state: Forwarding Cache lifetime/timeout: forever Wrong incoming interface notifications: 6 Group: 239.239.2.1 Source: 10.200.200.203/32 Upstream interface: ge-5/1/4.0 Downstream interface list: ge-5/0/0.797 xe-4/1/0.0 Session description: Organization-Local Scope Statistics: 637 kBps, 948 pps, 6602 packets Next-hop ID: 1048807 Upstream protocol: MVPN Route state: Active Can you help? Jurek _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp