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PIM Information Prior to Multicast Transmission

With the configuration properly set, the backbone PIM sessions should be established before any traffic is forwarded. In the output below, the routers were configured, but the traffic source was not transmitting and the receiver was not requesting to be part of a group. Notice that there is no PIM join information for the routing instances yet.

Router PE0

user@PE0> show pim join extensive

Instance: PIM.master Family: INET
Group: 239.1.1.1
    Source: *
    RP: 10.254.71.47
    Flags: sparse,rptree,wildcard
    Upstream interface: so-0/0/2.0
    Upstream State: Join to RP
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: SRW  Timeout: Infinity
Group: 239.1.1.1
    Source: 10.254.71.46
    Flags: sparse
    Upstream interface: local
    Upstream State: Local Source, Prune to RP
    Keepalive timeout: 166
    Downstream Neighbors:
        Interface: so-0/0/2.0
            192.168.296.70 State: Join   Flags: S    Timeout: 204
Group: 239.1.1.1
    Source: 10.254.71.51
    Flags: sparse,spt-pending
    Upstream interface: so-0/0/2.0
    Upstream State: Join to Source
    Keepalive timeout: 166
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: S    Timeout: Infinity
user@PE0>  show pim join extensive instance VPN-A
Instance: PIM.VPN-A Family: INET

Router P0

user@P0> show pim join extensive

Instance: PIM.master Family: INET
Group: 239.1.1.1
    Source: *
    RP: 10.254.71.47
    Flags: sparse,rptree,wildcard
    Upstream interface: local
    Upstream State: Local RP
    Downstream Neighbors:
        Interface: so-0/0/0.0
            192.168.296.34 State: Join   Flags: SRW  Timeout: 186
        Interface: so-0/0/2.0
            192.168.296.69 State: Join   Flags: SRW  Timeout: 198
Group: 239.1.1.1
    Source: 10.254.71.46
    Flags: sparse,spt
    Upstream interface: so-0/0/2.0
    Upstream State: Local RP, Join to Source
    Keepalive timeout: 170
    Downstream Neighbors:
        Interface: so-0/0/0.0
            192.168.296.34 State: Join   Flags: S    Timeout: 186
        Interface: so-0/0/2.0             (pruned)
            192.168.296.69 State: Prune  Flags: SR   Timeout: 198
Group: 239.1.1.1
    Source: 10.254.71.51
    Flags: sparse,spt
    Upstream interface: so-0/0/0.0
    Upstream State: Local RP, Join to Source
    Keepalive timeout: 170
    Downstream Neighbors:
        Interface: so-0/0/0.0             (pruned)
            192.168.296.34 State: Prune  Flags: SR   Timeout: 186
        Interface: so-0/0/2.0
            192.168.296.69 State: Join   Flags: S    Timeout: 198

Router PE1

user@PE1> show pim join extensive

Instance: PIM.master Family: INET
Group: 239.1.1.1
    Source: *
    RP: 10.254.71.47
    Flags: sparse,rptree,wildcard
    Upstream interface: so-0/1/0.0
    Upstream State: Join to RP
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: SRW  Timeout: Infinity
Group: 239.1.1.1
    Source: 10.254.71.46
    Flags: sparse,spt-pending
    Upstream interface: so-0/1/0.0
    Upstream State: Join to Source
    Keepalive timeout: 180
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: S    Timeout: Infinity
Group: 239.1.1.1
    Source: 10.254.71.51
    Flags: sparse
    Upstream interface: local
    Upstream State: Local Source, Prune to RP
    Keepalive timeout: 180
    Downstream Neighbors:
        Interface: so-0/1/0.0
            192.168.296.33 State: Join   Flags: S    Timeout: 168

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