User's Manual

Table Of Contents
461
Users Manual of CS-6306R
client peers consists of a cluster. The non-client peers must be fully connected. The client peers need not be
fully connected. The clients in the cluster do not communicate with the IBGP session sponsors in the different
cluster.
When the route reflector receives the routing infotmation, it will perform the following tasks:
Broadcast the routes from the external BGP session sponsors to all clients and non-client peers.
Broadcast the routes from the non-client routes to all clients.
Broadcast the routes from the client to all client peers and non-client peers. The client peers need not be
fully connected.
Run the following command to set the local router as the reflector and designate the neighbor as the client:
Command Purpose
neighbor
ip-addressroute-reflector-client
Sets the local router to the reflector and
designate the neighbor as the client.
One AS has multiple route reflectors. The route reflector handles other route reflectors as it handles IBGP
session sponsors. In general, the clients in the same cluster has only one route reflector. The cluster is
identified by the router ID of the route reflector. To add redundancy and avoid the failure of the single node,
one cluster may have several route reflectors. In this case, all route reflectors in the cluster must be set to a
4-bit cluster ID, enabling the route reflector to identify the update information of other route reflectors in the
same cluster. All the route reflectors in the same cluster must be fully connected and have the same client
peers and non-client peers.
If several route reflectors exists in a cluster, run the following command to configure the cluster ID:
Command Purpose
bgp cluster-id cluster-id
Configures the cluster ID.
Refer to the section “BGP Route Reflector Configuration Example”.
45.4.2.2.6 Shutting down peers
Run the following command to shut down the BGP neighbors:
Command Purpose
neighbor {ip-address } shutdown
Shuts down the BGP neighbor.
Run the following command to activate the neighbor:
Command Purpose
no neighbor {ip-address } shutdown
Activates the BGP neighbor.
45.4.2.2.7 Configuring multihop external peers
The external peers must be in the directly-connected networks by default. Run the following command to
configure multihop external peers:
Command Purpose