Troubleshooting Pim - H3C S5600 SERIES Operation Manual

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(10.110.5.100, 225.1.1.1)

Protocol 0x20: PIMSM, Flag 0x4: SPT

Uptime: 00:03:03, Timeout in 27 sec

Upstream interface: Vlan-interface105, RPF neighbor: 192.168.4.2

Downstream interface list:

Vlan-interface102, Protocol 0x200: SPT, timeout in 147 sec

Vlan-interface103, Protocol 0x200: SPT, timeout in 145 sec

Matched 1 (S,G) entry, 1 (*,G) entry, 0 (*,*,RP) entry

Troubleshooting PIM

Symptom: The router cannot set up multicast routing tables correctly.

Solution: You can troubleshoot PIM according to the following procedure.

Make sure that the unicast routing is correct before troubleshooting PIM.

Because PIM-SM needs the support of RP and BSR, you must execute the display pim bsr-info

command to see whether BSR information exists. If not, you must check whether there is any

unicast route to the BSR. Then, use the display pim rp-info command to check whether the RP

information is correct. If RP information does not exist, you must check whether there is any unicast

route to RP.

Use the display pim neighbor command to check whether the neighboring relationship is

correctly established.

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