3Com 7757 Configuration Manual page 373

Network diagram
Figure 86 Diagram for BGP routing
AS 100
Vlan -int101
VLAN -int2
VLAN -int3
Switch A
Device Interface
Switch A Vlan-int 101
Vlan-int 2
Vlan-int 3
Switch B Vlan-int 2
Vlan-int 4
Switch C Vlan-int 3
Vlan-int 5
Switch D Vlan-int 4
Vlan-int 5
Configuration procedure
1 Configure Switch A.
[SwitchA] interface Vlan-interface 2
[SwitchA-Vlan-interface2] ip address 192.1.1.1 255.255.255.0
[SwitchA] interface Vlan-interface 3
[SwitchA-Vlan-interface3] ip address 193.1.1.1 255.255.255.0
# Enable BGP
[SwitchA] bgp 100
# Specify the destination network for BGP routes.
[SwitchA-bgp] network 1.0.0.0
# Configure BGP peers.
[SwitchA-bgp] group ex192 external
[SwitchA-bgp] peer 192.1.1.2 group ex192 as-number 200
[SwitchA-bgp] group ex193 external
[SwitchA-bgp] peer 193.1.1.2 group ex193 as-number 200
[SwitchA-bgp] quit
# Configure the MED attribute of Switch A.
AS 200
Switch B
VLAN-int2
VLAN-int5
VLAN -int3
Switch C
IP address
1.1.1.1/8
192.1.1.1/24
193.1.1.1/24
192.1.1.2/24
194.1.1.2/24
193.1.1.2/24
195.1.1.2/24
194.1.1.1/24
195.1.1.1/24
Configuration Example
VLAN- int4
Switch D
AS
100
200
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