R3102-R3103-HP 6600/HSR6600 Routers IP Multicast Configuration Guide

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10.1.1.1 GE2/0/1 02:02:23 LAN Prune Delay
10.1.1.2 GE2/0/2 03:00:05 LAN Prune Delay
10.1.1.3 GE2/0/3 02:22:13 LAN Prune Delay
10.1.1.4 GE2/0/4 03:07:22 LAN Prune Delay
The output shows that Router A, Router B, Router C, and Router D are PIM snooping neighbors.
# On Router E, display the PIM snooping routing information of VLAN 100.
[RouterE] display pim-snooping routing-table vlan 100
Total 2 entry(ies)
FSM Flag: NI-no info, J-join, PP-prune pending
VLAN ID: 100
Total 2 entry(ies)
(*, 224.1.1.1)
Upstream neighbor: 10.1.1.1
Upstream port: GE2/0/1
Total number of downstream ports: 1
1: GE2/0/3
Expires: 00:03:01, FSM: J
(*, 225.1.1.1)
Upstream neighbor: 10.1.1.2
Upstream port: GE2/0/2
Total number of downstream ports: 1
1: GE2/0/4
Expires: 00:03:11, FSM: J
The output shows that Router E will forward the multicast data intended for multicast group
224.1.1.1 to only Router C, and forward the multicast data intended for multicast group
225.1.1.1 to only Router D.
Troubleshooting PIM snooping
This section describes common PIM snooping problems and how to troubleshoot them.
PIM snooping does not work
Symptom
PIM snooping does not work on the router that is installed with the SAP module.
Analysis
1. IGMP snooping or PIM snooping is not enabled.
2. PIM snooping is operating in a PIM-DM network.
Solution
1. Use the display current-configuration command to check the status of IGMP snooping and PIM
snooping.
2. If IGMP snooping is not enabled, enter system view and use the igmp-snooping command to
enable IGMP snooping globally. Then, enter VLAN view and use the igmp-snooping enable and
pim-snooping enable commands to enable IGMP snooping and PIM snooping for the VLAN.