Information Technology Reference
In-Depth Information
Example 8-41 shows the new BGP RIB on R1. All routes are properly received and
installed. The prefix 192.168.200.0 is received from R4 and R5 in member AS 65001,
because the sessions between R1 and R3 and between R1 and R2 are not up. This is
fine, because the forwarding still follows the IGP path from R1 to R3 directly.
Example 8-41
BGP RIB on R1
R1#show ip bgp
BGP table version is 15, 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
* 192.168.200.0 192.168.100.3 0 100 0 (65001 65000) i
*> 192.168.100.3 0 100 0 (65001 65000) i
* 192.168.201.0 192.168.100.6 0 100 0 (65001) i
*> 192.168.100.6 0 100 0 (65001) i
* 192.168.202.0 192.168.100.7 0 100 0 (65001) i
*> 192.168.100.7 0 100 0 (65001) i
Figure 8-9 shows the current topology.
Figure 8-9
R3 Moved to AS 65000
AS 200
R8
172.16.0.0/16
AS 100
AS 65001
R1
R4
R6
192.168.201.0/24
192.168.202.0/24
AS 65000
R3
R2
R5
R7
192.168.200.0/24
Confederation 100
