3com S7906E 安装指导

 

1-15 

To guarantee the connectivity between multicast iBGP peers in an AS, you need to make them fully 

meshed. But this becomes unpractical when there are large numbers of multicast iBGP peers. 

Configuring route reflectors can solve this problem.  

Follow these steps to configure an MBGP route reflector: 

Enter system view 

— 

Enter BGP view 

bgp as-number 

— 

Enter IPv4 MBGP address 
family view 

— 

Configure the router as a route 
reflector and specify an MBGP 
peer/peer group as its client 

peer { group-name | 
peer-address } reflect-client 

Required 

Not configured by default. 

Enable route reflection 
between clients 

Optional 

Enabled by default. 

Configure the cluster ID of the 
route reflector 

reflector cluster-id cluster-id 

Optional 

By default, a route reflector 
uses its router ID as the cluster 
ID. 

 

z 

In general, it is not required that clients of a route reflector be fully meshed. The route reflector 

forwards routing information between clients. If clients are fully meshed, you can disable route 

reflection between clients to reduce routing costs. 

z 

In general, a cluster has only one route reflector, and the router ID of the route reflector is used to 

identify the cluster. You can configure multiple route reflectors to improve network stability. In this 

case, you need to specify the same cluster ID for these route reflectors to avoid routing loops. 

 

Display the IPv4 MBGP routing 
table 

display ip multicast routing-table [ verbose] 

Available in 
any view 

Display the IPv4 MBGP routing 
information matching the 
specified destination IP 
address 

display ip multicast routing-table ip-address 
[ mask-length | mask ] [ longer-match ] 
[ verbose ] 

Available in 
any view 

Display MBGP peer group 
information 

display bgp multicast group [ group-name ]  

Available in 
any view