Cisco Cisco IOS Software Release 12.2(14)S
BGP Next Hop Propagation
Configuration Examples for BGP Next Hop Propagation
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Cisco IOS Release 12.0(16)ST, 12.2, 12.2(14)S, and 12.0(22)S
DETAILED STEPS
Configuration Examples for BGP Next Hop Propagation
The following examples show how to configure this feature:
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Router Reflector: Example
The following example, starting in global configuration mode, configures the local router as a route
reflector and configures the 10.0.0.100 multihop peer as a route reflector client. A route map is created
to set the advertised next hop to 172.16.0.1.
reflector and configures the 10.0.0.100 multihop peer as a route reflector client. A route map is created
to set the advertised next hop to 172.16.0.1.
route-map NEXTHOP
set ip next-hop 172.16.0.1
exit
router bgp 65535
address-family ipv4
neighbor 10.0.0.100 activate
neighbor 10.0.0.100 ebgp-multihop 255
neighbor 10.0.0.100 route-reflector-client
neighbor 10.0.0.100 route-map NEXTHOP out
end
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
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Enter your password if prompted.
Step 2
show ip bgp neighbors [neighbor-address]
[received-routes | routes | advertised-routes |
{paths regexp} | dampened-routes | received
prefix-filter]]
Example:
Router# show ip bgp neighbors
Displays information about the TCP and BGP connections
to neighbors. The output will display the status of the BGP
Next Hop Propagation feature.
to neighbors. The output will display the status of the BGP
Next Hop Propagation feature.
Step 3
show ip bgp [network] [network-mask]
[longer-prefixes] [prefix-list prefix-list-name
| route-map route-map-name] [shorter prefixes
mask-length]
Example:
Router# show ip bgp
Displays entries in the BGP routing table. The displayed
output will indicate if the neighbor next-hop-unchanged
command has been configured for the selected address.
output will indicate if the neighbor next-hop-unchanged
command has been configured for the selected address.