BGP Configuration Example 473

Figure 155 Networking diagram of configuring route reflector

 

 

 

Router C

 

 

 

 

 

Route reflector

 

 

 

 

 

3.3.3.3

S2

IBGP

 

 

 

 

S0

S1

S0

Connected w ith

 

 

193.1.1.1/24

 

netw ork 1.0.0.0

 

AS200

 

194.1.1.1/24

 

AS100

 

IBGP

IBGP

 

Router E

 

 

 

 

 

 

 

 

 

S1

 

S0

S1

S0

 

5.5.5.5

EBGP

193.1.1.2/24

 

 

 

194.1.1.2/24

 

Router A

S0

192.1.1.2/24

2.2.2.2

 

4.4.4.4

 

1.1.1.1

192.1.1.1/24

 

Router B

Router D

 

 

 

Route reflector client

 

 

 

 

Route reflector client

 

 

 

 

 

 

1Configure Router A:

[RouterA] bgp 100 [RouterA-bgp] undo synchronization

[RouterA-bgp]peer 192.1.1.2 as-number 200

[RouterA-bgp] interface serial 0 [RouterA-Serial0] ip address 192.1.1.1 255.255.255.0

2Configure Router B:

aConfigure BGP peers

[RouterB] bgp 200

 

 

[RouterA-bgp] undo

synchronization

[RouterB-bgp]

peer

192.1.1.1

as-number 100

[RouterB-bgp]

peer

193.1.1.1

as-number 200

bEnable OSPF

[RouterB] ospf enable

cConfigure Serial 0

[RouterB-ospf] interface serial 0 [RouterB-Serial0] ip address 192.1.1.2 255.255.255.0

dConfigure Serial 1

[RouterB-Serial0] interface serial 1

[RouterB-Serial1]ip address 193.1.1.2 255.255.255.0

[RouterB-Serial1] ospf enable area 0

3Configure Router C:

aConfigure BGP peers and route reflector clients

[RouterC] bgp 200 [RouterA-bgp] undo synchronization

[RouterC-bgp]peer 193.1.1.2 as-number 200 reflect-client

[RouterC-bgp]peer 193.1.1.2 reflect-client

[RouterC-bgp]peer 194.1.1.2 as-number 200 reflect-client

[RouterC-bgp]peer 194.1.1.2 reflect-client

bEnable OSPF

[RouterC] ospf enable

cConfigure Serial 0

[RouterC-ospf]interface serial 0

Page 477
Image 477
3Com 10014299 Configure Router B Configure BGP peers, RouterA-bgppeer 192.1.1.2 as-number, RouterC-ospfinterface serial