H3C Technologies H3C S7500E Series Switches - Manual (Page 373)

12-16
Applying a Route Policy to Filter Received BGP Routes
Network requirements
As shown in the following figure:
z All the switches run BGP. Switch C establishes eBGP connections with other switches.
z Configure a route policy on Switch D to reject routes from AS 200.
Figure 12-3 Route policy configuration to filter received BGP routes
Swtich B
AS 200
Vlan-int200
1.1.2.1/24
Swtich D Swtich C
AS 400
Swtich A
AS 100
Vlan-int100
1.1.1.1/24
Vlan-int300
1.1.3.1/24
AS 300
Vlan-int100
1.1.1.2/24
Vlan-int200
1.1.2.2/24
Vlan-int300
1.1.3.2/24
Configuration procedure
1) Configure IP addresses for the interfaces (omitted).
2) Configure BGP.
# Configure Switch A.
system-view
[SwitchA] bgp 100
[SwitchA-bgp] router-id 1.1.1.1
[SwitchA-bgp] peer 1.1.1.2 as-number 300
# Configure Switch B.
system-view
[SwitchB] bgp 200
[SwitchB-bgp] router-id 2.2.2.2
[SwitchB-bgp] peer 1.1.2.2 as-number 300
# Configure Switch C.
system-view
[SwitchC] bgp 300
[SwitchC-bgp] router-id 3.3.3.3
[SwitchC-bgp] peer 1.1.1.1 as-number 100
[SwitchC-bgp] peer 1.1.2.1 as-number 200
[SwitchC-bgp] peer 1.1.3.2 as-number 400
# Configure Switch D.
system-view
[SwitchD] bgp 400
[SwitchD-bgp] router-id 4.4.4.4