Information Technology Reference
In-Depth Information
Figure 8-7
Current Network Topology
AS 200
R8
172.16.0.0/16
AS 100
AS 65001
R1
R4
192.168.201.0/24
192.168.200.0/24
R6
R3
R2
R7
R5
192.168.202.0/24
Confederation 100
Step 9: Move R2 out of the Forwarding Paths, and Migrate R2 from Member AS 100 to
Member AS 65000
Move R2 from the current member AS 100 to a new member AS 65000. To avoid black-
holing traffic on R2, you should move R2 out of the forwarding paths until the migration of
R2 is complete (in the next step). Example 8-37 shows R2's new BGP configurations.
Example 8-37
BGP Configurations on R2
router bgp 65000
no synchronization
bgp router-id 192.168.100.2
bgp log-neighbor-changes
bgp confederation identifier 100
bgp confederation peers 65001
neighbor Internal peer-group
neighbor Internal remote-as 65000
neighbor Internal update-source Loopback0
neighbor 192.168.24.4 remote-as 65001
neighbor 192.168.25.5 remote-as 65001
neighbor 192.168.100.1 peer-group Internal
neighbor 192.168.100.3 peer-group Internal
no auto-summary
