3Com S7902E, Руководство по настройке

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To do… Use the command… Remarks
Add a peer to the BGP
MDT peer group peer ip-address group
group-name
Optional
By default, a BGP MDT peer
belongs to no peer groups.
A BGP MDT peer or peer group is a peer or peer group created in BGP-MDT subaddress family view.
Configuring a BGP MDT Route Reflector
BGP MDT peers in the same AS must be fully meshed to maintain connectivity. However, when many
BGP MDT peers exist in an AS, connection establishment among them may cause great expenses. To
reduce connections between them, you can configure one of them as a route reflector and specify other
routers as clients. The clients establish BGP MDT connections with the route reflector, and the route
reflector forwards (reflects) BGP MDT routing information between clients. In this way, the clients need
not to be fully meshed. Furthermore, you can disable client-to-client reflection to reduce overloads if the
clients have been fully meshed.
The route reflector and its clients form a cluster. In general, a cluster has only one route reflector whose
router ID identifies the cluster. However, you can configure several route reflectors in a cluster to
improve network reliability, and they must have the same cluster ID configured to avoid routing loops.
Follow these steps to configure a BGP MDT route reflector:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Enter BGP MDT sub-address
family view
ipv4-family mdt —
Configure the local device as a
route reflector and specify its
clients
peer { group-name |
ip-address } reflect-client
Required
By default, neither route
reflectors nor clients exist.
Disable route reflection
between clients
undo reflect
between-clients
Optional
Enabled by default.
Configure the cluster ID of the
route reflector reflector cluster-id
{ cluster-id | ip-address }
Optional
By default, a route reflector uses
its router ID as the cluster ID.