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
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 (*, 172.17.1.1), 1w4d/00:02:43, RP 10.22.1.1, flags: S Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: Ethernet2/1.2, Forward/Sparse, 1w4d/00:02:43 (10.22.2.2, 172.17.1.1), 1w4d/00:03:23, flags: T Incoming interface: Ethernet2/1.6, RPF nbr 10.88.0.18 Outgoing interface list: Ethernet2/1.2, Forward/Sparse, 1w4d/00:02:43 (10.22.3.3, 172.17.1.1), 22:10:01/00:02:57, flags: PT Incoming interface: Ethernet2/1.2, RPF nbr 10.88.0.2 Outgoing interface list: Null(*, 172.17.55.59), 2d23h/00:03:06, RP 10.22.1.1, 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, 172.17.55.59), 00:22:58/00:02:34, flags: PT Incoming interface: Ethernet2/1.5, RPF nbr 10.88.0.6 Outgoing interface list: Null (*, 172.17.1.40), 1w4d/00:02:59, RP 10.22.1.1, 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