Bgp Confederation Configuration - 3Com MSR 50 Series Configuration Manual

868 C 56: BGP C
HAPTER ONFIGURATION
BGP Confederation
Configuration
# Display the BGP routing table on Router D
[RouterD] display bgp routing-table
Total Number of Routes: 1
BGP Local router ID is 200.1.2.1
Status codes: * - valid, > - best, d - damped,
h - history,
Origin : i - IGP, e - EGP, ? - incomplete
Network
i 1.0.0.0
Router D learned the route 1.0.0.0/8 from Router C.
Network requirements
To reduce IBGP connections in AS 200, split it into three sub ASs, AS 65001, AS
65002 and AS 65003. Routers in AS 65001 are fully meshed.
Network diagram
Figure 251 Network diagram for BGP confederation configuration
Eth1/0
S2/0
Router F
AS 100
S2/1
Router A
AS 200
Device Interface
Router A S2/1
Eth1/0
Eth1/1
Eth1/2
Eth1/3
Router B Eth1/0
Router C Eth1/0
Configuration procedure
1 Configure IP addresses for interfaces (omitted)
2 Configure BGP confederation
# Configure Router A.
i - internal, s - suppressed, S - Stale
NextHop MED
193.1.1.2 0
Router B
Eth1/0
Eth1/0
AS 65002
Eth1/0
Eth1/1
Eth1/0
Eth1/2
Eth1/1
Eth1/3
Eth1/0
Eth1 /1
Router E
IP address Device
200.1.1.1/24 Router D
10.1.1.1/24
10.1.2.1/24 Router E
10.1.3.1/24
10.1.4.1/24 Router F
10.1.1.2/24
10.1.2.2/24
LocPrf PrefVal Path/Ogn
100 0 100i
Router C
AS 65003
Router D
AS 65001
Interface
Eth1/0
Eth1/1
Eth1/0
Eth1/1
Eth1/0
S2/0
IP address
10.1.3.2/24
10.1.5.1/24
10.1.4.2/24
10.1.5.2/24
9.1.1.1/24
200.1.1.2/24