H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Multicast
H3C S7500 Series Ethernet Switches Chapter 7
PIM Configuration
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[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.
z 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.
z Use the display pim neighbor command to check whether the neighboring
relationship is correctly established.