Cisco ASR 9000 Series Routing Configuration Guide

PurposeCommand or Action
Configures the BGP software to ignore the autonomous system
length when performing best-path selection.
bgp bestpath as-path ignore
Example:
RP/0/RSP0/CPU0:router(config-bgp)# bgp
bestpath as-path ignore
Step 6
Configure the BGP speaker in the autonomous system to
compare the router IDs of similar paths.
bgp bestpath compare-routerid
Example:
RP/0/RSP0/CPU0:router(config-bgp)# bgp
bestpath compare-routerid
Step 7
commit
Step 8
Indicating BGP Back-door Routes
Perform this task to set the administrative distance on an external Border Gateway Protocol (eBGP) route to
that of a locally sourced BGP route, causing it to be less preferred than an Interior Gateway Protocol (IGP)
route.
SUMMARY STEPS
1.
configure
2.
router bgp as-number
3.
address-family { ipv4 | ipv6 } unicast
4.
network { ip-address / prefix-length | ip-address mask } backdoor
5.
commit
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 (?).
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
89
Implementing BGP
Indicating BGP Back-door Routes

Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English