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
Specifies either the IPv4 or IPv6 address family and enters
address family configuration submode.
address-family { ipv4 | ipv6 } unicast
Example:
RP/0/RSP0/CPU0:router(config-bgp)#
address-family ipv4 unicast
Step 3
To see a list of all the possible keywords and arguments for
this command, use the CLI help (?).
Configures the local router to originate and advertise the
specified network.
network { ip-address / prefix-length | ip-address
mask } backdoor
Example:
RP/0/RSP0/CPU0:router(config-bgp-af)# network
172.20.0.0/16
Step 4
commit
Step 5
Configuring Aggregate Addresses
Perform this task to create aggregate entries in a BGP routing table.
SUMMARY STEPS
1.
configure
2.
router bgp as-number
3.
address-family { ipv4 | ipv6 } unicast
4.
aggregate-address address/mask-length [ as-set ] [ as-confed-set ] [ summary-only ] [ route-policy
route-policy-name ]
5.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
86 OL-30423-03
Implementing BGP
Configuring Aggregate Addresses
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