Information Technology Reference
In-Depth Information
Example 8-86
BGP Configurations on R4
router bgp 100
no synchronization
bgp router-id 192.168.100.4
bgp log-neighbor-changes
bgp confederation identifier 100
bgp confederation peers 65000 65001
neighbor Peers peer-group
neighbor Peers remote-as 65000
neighbor Clients peer-group
neighbor Clients remote-as 100
neighbor Clients update-source Loopback0
neighbor Clients route-reflector-client
neighbor 192.168.14.1 peer-group Peers
neighbor 192.168.24.2 peer-group Peers
neighbor 192.168.100.6 peer-group Clients
neighbor 192.168.100.7 peer-group Clients
no auto-summary
Error messages about wrong AS numbers are reported on R1, R2, R4, R6, and R7. Ignore
them. Verify that all the prefixes are still properly received on routers other than R4. The
following are some sample outputs.
Example 8-87 shows the BGP RIB on R1. Both prefixes originated from
the POP on the right are received correctly.
Step 1
Example 8-87
BGP RIB on R1
R1#show ip bgp
BGP table version is 9, local router ID is 192.168.100.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 172.16.0.0 192.168.18.8 0 0 200 i
*>i192.168.200.0 192.168.100.3 0 100 0 i
* 192.168.201.0 192.168.100.6 0 100 0 (65001) i
*>i 192.168.100.6 0 100 0 (65001) i
* 192.168.202.0 192.168.100.7 0 100 0 (65001) i
*>i 192.168.100.7 0 100 0 (65001) i
Example 8-88 shows the BGP RIB on R6. The external prefix and the prefix from the POP
on the left are received correctly.
