3Com Switch 4800G 24-Port - Page 407

BGP Configuration Examples 407
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 1.0.0.0 192.1.1.1 0 0 100i
# Display the BGP routing table on Switch D.
[SwitchD] display bgp routing-table
Total Number of Routes: 1
BGP Local router ID is 4.4.4.4
Status codes: * - valid, > - best, d - damped,
h - history, i - internal,s-suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
i 1.0.0.0 193.1.1.2 0 100 0 100i
Switch D learned route 1.0.0.0/8 from Switch C.
BGP Confederation
Configuration
Network requirements
To reduce IBGP connections in AS 200, split it into three sub-ASs, AS77001,
AS77002 and AS77003. Switches in AS77001 are fully meshed.
Network diagram
Figure 135 Network diagram for BGP confederation configuration
Configuration procedure
1 Configure IP addresses for interfaces (omitted)
2 Configure BGP confederation
Device Interface IP address Device Interface IP address
Switch A Vlan-int100 200.1.1.1/24 Switch D Vlan-int400 10.1.3.2/24
Vlan-int200 10.1.1.1/24 Vlan-int200 10.1.5.1/24
Vlan-int300 10.1.2.1/24 Switch E Vlan-int500 10.1.4.2/24
Vlan-int400 10.1.3.1/24 Vlan-int200 10.1.5.2/24
Vlan-int500 10.1.4.1/24 Switch F Vlan-int200 9.1.1.1/24
Switch B Vlan-int200 10.1.1.2/24 Vlan-int100 200.1.1.2/24
Switch C Vlan-int300 10.1.2.2/24
Switch F
Switch A
Switch D
Switch E
AS 200
AS 100
Switch B
Switch C
AS 65002
AS 65003
Vlan-int100
Vlan-int100
AS 65001
Vlan-int200
V
l
a
n
-i
n
t
30
0
Vlan-int400
Vlan-int500
Vlan-int400
Vlan-int500
Vlan-int200
Vlan-int200
Vlan-int300
Vlan-int200
Vlan-int200