Default MDT GROUP.

Hi,

I have configured all PE routeri;s default mdt group 239.255.13.27.

(*, 239.255.13.27), 1d10h/stopped, RP 0.0.0.0, flags: SJCZ.

What would be the reason behind showing stopped.

Thx

Comments

  • Because the router has built a S,G entry to the MDT group. It looks like you have no RP configured, you either need to enable SSM (ip ssm default) or configure a RP to built the default MDT.

    R9#show ip mroute
    IP Multicast Routing Table
    Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
           L - Local, P - Pruned, R - RP-bit set, F - Register flag,
           T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet,
           X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
           U - URD, I - Received Source Specific Host Report,
           Z - Multicast Tunnel, z - MDT-data group sender,
           Y - Joined MDT-data group, y - Sending to MDT-data group,
           V - RD & Vector, v - Vector
    Outgoing interface flags: H - Hardware switched, A - Assert winner
     Timers: Uptime/Expires
     Interface state: Interface, Next-Hop or VCD, State/Mode

    (*, 239.255.13.27), 00:01:24/stopped, RP 2.2.0.2, flags: SJCFZ
      Incoming interface: Ethernet0/0, RPF nbr 2.2.29.2
      Outgoing interface list:
        MVRF ABC, Forward/Sparse, 00:01:23/00:01:36

    (2.2.0.8, 239.255.13.27), 00:01:22/00:01:37, flags: TZ
      Incoming interface: Ethernet0/1, RPF nbr 2.2.79.7
      Outgoing interface list:
        Ethernet0/2, Forward/Sparse, 00:01:22/00:03:07
        MVRF ABC, Forward/Sparse, 00:01:22/00:01:37

    (2.2.0.7, 239.255.13.27), 00:01:23/00:01:36, flags: TZ
      Incoming interface: Ethernet0/1, RPF nbr 2.2.79.7
      Outgoing interface list:
        Ethernet0/2, Forward/Sparse, 00:00:56/00:03:03
        MVRF ABC, Forward/Sparse, 00:01:23/00:01:36

    (2.2.0.2, 239.255.13.27), 00:01:23/00:01:36, flags: TZ
      Incoming interface: Ethernet0/0, RPF nbr 2.2.29.2
      Outgoing interface list:
        MVRF ABC, Forward/Sparse, 00:01:28/00:01:31
        Ethernet0/2, Forward/Sparse, 00:01:28/00:03:00

    (2.2.0.9, 239.255.13.27), 00:01:28/00:02:02, flags: FT
      Incoming interface: Loopback0, RPF nbr 0.0.0.0
      Outgoing interface list:
        Ethernet0/1, Forward/Sparse, 00:01:28/00:03:00
        Ethernet0/0, Forward/Sparse, 00:01:28/00:03:00, A

    (2.2.0.6, 239.255.13.27), 00:01:29/00:02:00, flags: TZ
      Incoming interface: Ethernet0/2, RPF nbr 2.2.69.6
      Outgoing interface list:
        Ethernet0/1, Forward/Sparse, 00:00:58/00:02:31
        MVRF ABC, Forward/Sparse, 00:01:28/00:01:31
        Ethernet0/0, Forward/Sparse, 00:01:29/00:02:59

    (*, 224.0.1.40), 00:02:30/00:02:21, RP 0.0.0.0, flags: DCL
      Incoming interface: Null, RPF nbr 0.0.0.0
      Outgoing interface list:
        Loopback0, Forward/Sparse, 00:02:29/00:02:21

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