Indicating Bgp Back-Door Routes - Cisco ASR 9000 Series Routing Configuration Manual

Implementing BGP
Command or Action
Step 6
bgp bestpath as-path ignore
Example:
RP/0/RSP0/CPU0:router(config-bgp)# bgp
bestpath as-path ignore
Step 7
bgp bestpath compare-routerid
Example:
RP/0/RSP0/CPU0:router(config-bgp)# bgp
bestpath compare-routerid
Step 8 commit

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
Command or Action
Step 1
configure
Step 2 router bgp as-number
Example:
RP/0/RSP0/CPU0:router(config)# router bgp 120
Step 3 address-family { ipv4 | ipv6 } unicast
Example:
RP/0/RSP0/CPU0:router(config-bgp)#
address-family ipv4 unicast
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
Indicating BGP Back-door Routes
Purpose
Configures the BGP software to ignore the autonomous system
length when performing best-path selection.
Configure the BGP speaker in the autonomous system to
compare the router IDs of similar paths.
Purpose
Specifies the autonomous system number and enters the
BGP configuration mode, allowing you to configure the
BGP routing process.
Specifies either the IPv4 or IPv6 address family and enters
address family configuration submode.
To see a list of all the possible keywords and arguments for
this command, use the CLI help (?).
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