Information Technology Reference
In-Depth Information
Figure 8-13
Current Network Topology
AS 200
R8
172.16.0.0/16
AS 100
RR
AS 65001
R4
R1
R6
192.168.200.0/24
192.168.201.0/24
Client
192.168.202.0/24
R3
RR
R2
R7
R5
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 the new member AS 65000. To avoid black-
holing traffic by R2, you should move R2 out of the forwarding paths.
Example 8-66 shows R2's new BGP configurations. After the configuration change, R1,
R3, R4, and R5 complain about the wrong AS to R2. Ignore these messages; they are
expected during this phase of the migration.
Example 8-66
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
continues
