Troubleshooting Pim - H3C S7500 Series Operation Manual

Operation Manual – Multicast
H3C S7500 Series Ethernet Switches
[H3C] interface Vlan-interface 12
[H3C-Vlan-interface12] pim sm
[H3C-Vlan-interface12] quit

7.7 Troubleshooting PIM

Symptom 1: 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 right before troubleshooting PIM.
Because PIM-SM needs the support of RPs and BSRs, you must execute the
display pim bsr-info command to see whether BSR information exists. If not, you
must check whether there are unicast routes to the BSR. Then use the display
pim rp-info command to check whether the RP information is right. If no RP
information exists, you must check whether there are unicast routes to the RP.
Use the display pim neighbor command to check whether the neighboring
relationship is correctly established.
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Chapter 7 PIM Configuration