Common Causes
This fault is commonly caused by one of the following causes:
l The MSDP peer to initiate SA messages is not configured on the RP.
l The logical RP is not configured on the devices to be deployed with anycast RP or
configurations of the logical RP are incorrect.
l MSDP peer relationships are not set up between every two members in a mesh group.
l The used intra-domain multicast protocol is not PIM-SM.
l The RPF route to the multicast source is incorrect. For example, the unicast route contains
a loop.
l Configurations are incorrect. For example, the configurations of the SA policy, import
policy, TTL, switchover threshold, or multicast boundary are improper.
l The SA message fails to pass RPF check.
Troubleshooting Flowchart
After configurations are complete on a multicast network, MSDP peers cannot generate correct
(S, G) entries.
Figure 8-5 shows the troubleshooting flowchart.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 8 Multicast
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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