DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Specifies the autonomous system number and enters the BGP
configuration mode, allowing you to configure the BGP routing
process.
router bgp as-number
Example:
RP/0/RSP0/CPU0:router(config)# router bgp
120
Step 2
Configures the local router as one of the route reflectors serving
the cluster. It is configured with a specified cluster ID to
identify the cluster.
bgp cluster-id cluster-id
Example:
RP/0/RSP0/CPU0:router(config-bgp)# bgp
cluster-id 192.168.70.1
Step 3
Places the router in neighbor configuration mode for BGP
routing and configures the neighbor IP address as a BGP peer.
neighbor ip-address
Example:
RP/0/RSP0/CPU0:router(config-bgp)# neighbor
Step 4
172.168.40.24
Creates a neighbor and assigns a remote autonomous system
number to it.
remote-as as-number
Example:
RP/0/RSP0/CPU0:router(config-bgp-nbr)#
remote-as 2003
Step 5
Specifies either an IPv4 or IPv6 address family unicast and
enters address family configuration submode.
address-family { ipv4 | ipv6 } unicast
Example:
RP/0/RSP0/CPU0:router(config-nbr)#
address-family ipv4 unicast
Step 6
To see a list of all the possible keywords and arguments for
this command, use the CLI help (?).
Configures the router as a BGP route reflector and configures
the neighbor as its client.
route-reflector-client
Example:
RP/0/RSP0/CPU0:router(config-bgp-nbr-af)#
route-reflector-client
Step 7
commit
Step 8
Configuring BGP Route Filtering by Route Policy
Perform this task to configure BGP routing filtering by route policy.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
100 OL-30423-03
Implementing BGP
Configuring BGP Route Filtering by Route Policy
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