Information Technology Reference
In-Depth Information
Relevant Configurations on R7 (Continued)
Example 8-7
neighbor 192.168.100.1 peer-group Internal
neighbor 192.168.100.2 peer-group Internal
neighbor 192.168.100.3 peer-group Internal
neighbor 192.168.100.4 peer-group Internal
neighbor 192.168.100.5 peer-group Internal
neighbor 192.168.100.6 peer-group Internal
no auto-summary
The only router that is not part of AS 100 is R8. Its BGP configurations are shown in
Example 8-8. The prefix 172.16.0.0/16 is generated locally and is advertised to AS 100.
Relevant Configurations on R8
Example 8-8
router bgp 200
no synchronization
bgp log-neighbor-changes
network 172.16.0.0
neighbor 192.168.18.1 remote-as 100
no auto-summary
!
ip route 172.16.0.0 255.255.0.0 Null0
The following examples provide some sample outputs for a few selected routers.
Example 8-9 shows the IP RIB on R1. Note that all the loopback addresses in AS 100
can be reached.
IP RIB on R1
Example 8-9
R1#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
i L2 192.168.46.0/24 [115/20] via 192.168.14.4, Serial7/0
C 192.168.12.0/24 is directly connected, Ethernet0/0
i L2 192.168.47.0/24 [115/20] via 192.168.14.4, Serial7/0
C 192.168.13.0/24 is directly connected, Ethernet1/0
C 192.168.14.0/24 is directly connected, Serial7/0
C 192.168.15.0/24 is directly connected, Serial8/0
i L2 192.168.45.0/24 [115/20] via 192.168.14.4, Serial7/0
