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    Collecting Multicast Path Data from Live Network

    In the Schedule Live Network Collection task in the Task Manager, check the Multicast Path box as shown in the following figure. This ensures that the multicast routing table is collected. The multicast tree and subsequent display is constructed via the olist and ilist that is contained in the collected multicast routing table.

    Figure 1: Multicast Path Collection Option

    Multicast Path Collection Option

    The collected data is stored in directory /u/wandl/data/collection/.LiveNetwork/multicast_path/. The following is an example for IOS of the multicast routing table that is collected.

    show running | include hostname
    hostname BEK3640
    BEK3640#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,
    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
    Outgoing interface flags: H - Hardware switched, A - Assert winner
    Timers: Uptime/Expires
    Interface state: Interface, Next-Hop or VCD, State/Mode
    (*, 239.1.1.1), 1w4d/00:02:43, RP 22.22.1.1, flags: S
    Incoming interface: Null, RPF nbr 0.0.0.0
    Outgoing interface list:
    Ethernet2/1.2, Forward/Sparse, 1w4d/00:02:43
    (22.22.2.2, 239.1.1.1), 1w4d/00:03:23, flags: T
    Incoming interface: Ethernet2/1.6, RPF nbr 88.88.0.18
    Outgoing interface list:
    Ethernet2/1.2, Forward/Sparse, 1w4d/00:02:43
    (22.22.3.3, 239.1.1.1), 22:10:01/00:02:57, flags: PT
    Incoming interface: Ethernet2/1.2, RPF nbr 88.88.0.2
    Outgoing interface list: Null(*, 224.0.55.59), 2d23h/00:03:06, RP 22.22.1.1, flags: S
    Incoming interface: Null, RPF nbr 0.0.0.0
    Outgoing interface list:
    Ethernet2/1.2, Forward/Sparse, 2d23h/00:03:06
    (10.33.3.2, 224.0.55.59), 00:22:58/00:02:34, flags: PT
    Incoming interface: Ethernet2/1.5, RPF nbr 88.88.0.6
    Outgoing interface list: Null
    (*, 224.0.1.40), 1w4d/00:02:59, RP 22.22.1.1, flags: SJCL
    Incoming interface: Null, RPF nbr 0.0.0.0
    Outgoing interface list:
    Ethernet2/1.5, Forward/Sparse, 2d16h/00:02:18
    Ethernet2/1.2, Forward/Sparse, 1w4d/00:02:36

    Modified: 2016-11-08