H3C Technologies H3C SecPath F1000-E - Manual (Page 93)

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# View the (S, G) entries cached in the SA cache on Device D.
[DeviceD] display msdp sa-cache
MSDP Source-Active Cache Information of VPN-Instance: public net
MSDP Total Source-Active Cache - 4 entries
MSDP matched 4 entries
(Source, Group) Origin RP Pro AS Uptime Expires
(10.110.3.100, 226.1.1.0) 1.1.1.1 ? ? 00:32:53 00:05:07
(10.110.3.100, 226.1.1.1) 1.1.1.1 ? ? 00:32:53 00:05:07
(10.110.3.100, 226.1.1.2) 1.1.1.1 ? ? 00:32:53 00:05:07
(10.110.3.100, 226.1.1.3) 1.1.1.1 ? ? 00:32:53 00:05:07
Troubleshooting MSDP
MSDP Peers Stay in Down State
Symptom
The configured MSDP peers stay in the down state.
Analysis
• A TCP connection–based MSDP peering relationship is established between the local interface
address and the MSDP peer after the configuration.
• The TCP connection setup will fail if there is a consistency between the local interface address and
the MSDP peer address configured on the router.
• If no route is available between the MSDP peers, the TCP connection setup will also fail.
Solution
Step1 Check that a route is available between the routers. Carry out the display ip routing-table
command to check whether the unicast route between the routers is correct.
Step2 Check that a unicast route is available between the two routers that will become MSDP peers to each
other.
Step3 Verify the interface address consistency between the MSDP peers. Use the display
current-configuration command to verify that the local interface address and the MSDP peer
address of the remote router are the same.
No SA Entries in the Router’s SA Cache
Symptom
MSDP fails to send (S, G) entries through SA messages.