Инструкции По Установке для 3com S7906E

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Analysis 
If PIM-SM is running in the VPN instance, the BSR information for the VPN instance is required; 
otherwise, the VPN instance’s MVRF cannot be correctly established.  
If PIM-SM is running in the VPN instance, the RP information for the VPN instance is required. If a 
unicast route to the RP is not available, this means that a PIM adjacency has not been correctly 
established between the public instance and the VPN instance, and thus VPN instance cannot 
correctly establish its MVRF.  
The customer DR must have a route to the private network RP. 
Solution 
1) Use 
the 
display pim bsr-info command to check whether the BSR information exists in the public 
instance and VPN instance. If not, check whether a unicast route exists to the BSR.  
2) Use 
the 
display pim rp-info command to view the RP information. If no RP information is available, 
check whether a unicast route exists to the RP. Use the display pim neighbor command to check 
whether the PIM adjacencies have correctly established in the public network and the private 
network.  
3) Use 
the 
ping command to check the connectivity between the private network DR and the private 
network RP.