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BGP Route Reflector Configuration Example

The IBGP network should be formed without interrupting fullmesh BGP connections between Switch B, Switch C, and Switch D, and call for simplified device configuration and management.

Configure Switch B, Switch C, and Switch D to have IBGP connections. Between Switch A and Switch B should be an EBGP connection.

Configure Switch C as a route reflector with clients Switch B and Switch D. 

Figure 5-10. BGP route reflector



                         


Configuring Switch A

Configure the VLAN that each interface belongs to.

admin@XorPlus# set vlans vlan-id 10 l3-interface 10
admin@XorPlus# set vlans vlan-id 20 l3-interface 20
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus#
admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching native-vlan-id 10
admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching native-vlan-id 20
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure the VLAN interfaces, and assign them each IP addresses.

admin@XorPlus# set vlan-interface interface 10 vif 10 address 192.168.10.1 prefix-length 24
admin@XorPlus# set vlan-interface interface 20 vif 20 address 192.168.20.1 prefix-length 24
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure an EBGP connection.

admin@XorPlus# set protocols bgp bgp-id 1.1.1.1
admin@XorPlus# set protocols bgp local-as 100
admin@XorPlus# set protocols bgp peer 192.168.20.2 as 200
admin@XorPlus# set protocols bgp peer 192.168.20.2 local-ip 192.168.20.1
admin@XorPlus# set protocols bgp peer 192.168.20.2 next-hop-self true
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configuring Switch B

Configure the VLAN that each interface belongs to.

admin@XorPlus# set vlans vlan-id 20 l3-interface 20
admin@XorPlus# set vlans vlan-id 40 l3-interface 40
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus#
admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching native-vlan-id 20
admin@XorPlus# set interface gigabit-ethernet ge-1/1/4 family ethernet-switching native-vlan-id 40
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure the VLAN interfaces, and assign them each IP addresses.

admin@XorPlus# set vlan-interface interface 20 vif 20 address 192.168.20.2 prefix-length 24
admin@XorPlus# set vlan-interface interface 40 vif 40 address 192.168.40.1 prefix-length 24
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure EBGP and IBGP connections.

admin@XorPlus# set policy policy-statement p2 term t1 from protocol bgp
admin@XorPlus#
admin@XorPlus# set policy policy-statement p2 term t1 from network4 192.168.10.0/24
admin@XorPlus# set policy policy-statement p2 term t1 then nexthop4 192.168.40.1 
admin@XorPlus# commit 
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus#
admin@XorPlus# set protocols bgp bgp-id 2.2.2.2
admin@XorPlus# set protocols bgp local-as 200
admin@XorPlus# set protocols bgp peer 192.168.20.2 as 100
admin@XorPlus# set protocols bgp peer 192.168.20.1 local-ip 192.168.20.2
admin@XorPlus# set protocols bgp peer 192.168.20.1 next-hop-self true
admin@XorPlus# set protocols bgp peer 192.168.40.2 as 200
admin@XorPlus# set protocols bgp peer 192.168.40.2 local-ip 192.168.40.1
admin@XorPlus# set protocols bgp peer 192.168.40.2 next-hop-self true
admin@XorPlus# set protocols bgp export p2
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configuring Switch C

Configure the VLAN that each interface belongs to.

admin@XorPlus# set vlans vlan-id 40 l3-interface 40
admin@XorPlus# set vlans vlan-id 50 l3-interface 50
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# set interface gigabit-ethernet ge-1/1/4 family ethernet-switching native-vlan-id 40
admin@XorPlus# set interface gigabit-ethernet ge-1/1/5 family ethernet-switching native-vlan-id 50
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure the VLAN interfaces, and assign them each IP addresses.

admin@XorPlus# set vlan-interface interface 40 vif 40 address 192.168.40.2 prefix-length 24
admin@XorPlus# set vlan-interface interface 50 vif 50 address 192.168.50.2 prefix-length 24
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure an IBGP connection.

admin@XorPlus# set protocols bgp bgp-id 3.3.3.3
admin@XorPlus# set protocols bgp local-as 200
admin@XorPlus# set protocols bgp peer 192.168.40.1 as 200
admin@XorPlus# set protocols bgp peer 192.168.40.1 local-ip 192.168.40.2
admin@XorPlus# set protocols bgp peer 192.168.40.1 next-hop-self true
admin@XorPlus# set protocols bgp peer 192.168.50.1 as 200
admin@XorPlus# set protocols bgp peer 192.168.50.1 local-ip 192.168.50.2
admin@XorPlus# set protocols bgp peer 192.168.50.1 next-hop-self true
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure IBGP connections for the route reflector clients.

admin@XorPlus# set protocols bgp route-reflector cluster-id 3.3.3.3 
admin@XorPlus# set protocols bgp route-reflector disable false
admin@XorPlus# set protocols bgp peer 192.168.40.1 client true
admin@XorPlus# set protocols bgp peer 192.168.50.1 client true
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configuring Switch D

Configure the VLAN that each interface belongs to.

admin@XorPlus# set vlans vlan-id 30 l3-interface 30
admin@XorPlus# set vlans vlan-id 50 l3-interface 50
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# set interface gigabit-ethernet ge-1/1/3 family ethernet-switching native-vlan-id 30
admin@XorPlus# set interface gigabit-ethernet ge-1/1/5 family ethernet-switching native-vlan-id 50
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure the VLAN interfaces, and assign them each IP addresses.

admin@XorPlus# set vlan-interface interface 30 vif 30 address 192.168.30.2 prefix-length 24
admin@XorPlus# set vlan-interface interface 50 vif 50 address 192.168.50.1 prefix-length 24
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Configure an IBGP connection.

admin@XorPlus# set protocols bgp bgp-id 4.4.4.4
admin@XorPlus# set protocols bgp local-as 200
admin@XorPlus# set protocols bgp peer 192.168.30.1 as 200
admin@XorPlus# set protocols bgp peer 192.168.30.1 local-ip 192.168.30.2
admin@XorPlus# set protocols bgp peer 192.168.30.1next-hop-self true
admin@XorPlus# set protocols bgp peer 192.168.50.2 as 200
admin@XorPlus# set protocols bgp peer 192.168.50.2 local-ip 192.168.50.1
admin@XorPlus# set protocols bgp peer 192.168.50.2 next-hop-self true
admin@XorPlus# commit
Waiting for merging configuration.
Commit OK.
Save done.
admin@XorPlus# 


Verifying Configurations

View the BGP routing table of Switch B:

admin@XorPlus# run show bgp routes 
Status Codes: * valid route, > best route
Origin Codes: i IGP, e EGP, ? incomplete 
Prefix Nexthop Peer AS Path
------ ------- ---- -------
*> 192.168.10.0/24 192.168.20.11.1.1.1200 ?
admin@XorPlus# 


View the BGP routing table of Switch D:

admin@XorPlus# run show bgp routes detail 
192.168.10.0/24
From peer: 3.3.3.3
Route: Not Used
Origin: INCOMPLETE
AS Path: 200
Nexthop: 192.168.40.1
Multiple Exit Discriminator: 0
Local Preference: 100
Originator ID: 2.2.2.2
Cluster List: 3.3.3.3 
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