3Com 10014299 Network Router User Manual


 
Troubleshooting PIM-SM 521
[RouterB-Serial1] pim sm
[RouterB] interface serial 2
[RouterB-Serial2] pim sm
b Configure the candidate BSR
[RouterB-pim] c-bsr serial 0 30 2
c Configure the candidate RP
[RouterB-pim] acl 5
[RouterB-acl-5] rule permit source 225.0.0.0 255.0.0.0
[RouterB-acl-5] pim
[RouterB-pim] c-rp serial 0 accept-policy 5
d Configure PIM domain boundary
[RouterB-Serial2] pim bsr-boundary
When the Serial 2 has been configured to be BSR, Router D will not be able to
receive the BSR information sent by Router B, which will be excluded from this PIM
domain.
3 Configure the Router C
a Enable PIM-SM protocol
[RouterC] multicast routing-enable
[RouterC] interface ethernet 0
[RouterC-Ethernet0] pim sm
[RouterC] interface serial 0
[RouterC-Serial0] pim sm
[RouterC] interface serial 1
[RouterC-Serial1] pim sm
Suppose Host A is the receiver of 225.0.0.1. Host B now begins sending data with
the destination address 225.0.0.1. Router A receives the multicast data sent by
Host B via Router B. When the multicast data rate of Host B exceeds 10kbps,
Router A will be added to the shortest path tree, and the multicast data message
sent by Host B will be received directly from Router C.
Troubleshooting
PIM-SM
The router cannot correctly establish the multicast routing table.
Follow these steps:
Use the PIM-SM protocol to configure RP and BSR. First, use the display pim
bsr-info command to check whether there is BSR information. If there is no
such information, check whether there is unicast routing to the BSR. Then, use
the
display pim rp-info command to check whether the RP information is
correct. If there is no RP information, check the unicast routing again.
The display pim neighbor command can be used to check whether the
neighbors have discovered each other.