User's Manual

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neighbors as the router reflector client:
Command Purpose
neighbor
ip-address
route-reflector-client
Configure the local router as route reflector and
designate neighbors as the client.
An AS may have several route reflectors, the way route reflector to process other route reflectors is the same
as the processing of IBGP speakers.Normally, a cluster of clients have only one route reflector, and then the
cluster is identified by the route reflector ‘s router ID. In order to increase the redundancy and avoid the failure
of single node, a cluster may have more than one route reflectors. In this case, all the route reflectors in the
cluster should be configured with 4-bit cluster ID, so that the route reflector can identify the update information
of the route reflector in the same cluster. All the route reflectors belonging to the same cluster should be full-
mesh-connected, and they should have the same client and non-client peer set.
If there is more than one route reflector in the cluster, you can use the following BGP configuration command
to configure cluster ID:
Command Purpose
bgp
cluster-id cluster-id Configure cluster-ID.
For examples of the configuration of route reflector, please refer to “examples of the configuration of BGP route
reflector”.
6. Shut down peer entity
Use the following BGP configuration command to shut down BGP neighbour:
Command Purpose
neighbor
{ip-address | peer-group-name}
shutdown
Shut down BGP neighbour.
Use the following BGP configuration command to activate the neighbour shut down previously:
Command Purpose
no neighbor
{ip-address | peer-group-name}
shutdown
Activate BGP neighbour.
7. Configure multihop external peer body
By default, external peers should be on a directly connected network, in order to configure multihop external
peer, you need to carry out the following task:
Command Purpose
neighbor
{ip-address | peer-group-name}
ebgp-
multihop
ttl
Configure BGP neighbor as multihop external
peer.
8. Configure the management distance of BGP routes
Management distance is a kind of measurement of the preference of different routing protocol. BGP uses 3
different management distances: external distance, internal distance and local distance. The routes obtained
from external BGP will be assigned with the external distiance; the routes obtained from internal BGP will have
a distance as internel distance, local routes will be given the local distance. Use the following BGP
configuration command to configure BGP route management distance:
Command Purpose