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BGP LS configuration example 
Network requirements 
As shown in Figure 81, all switches run BGP. Run IBGP between Switch A and Switch B, between 
Switch B and Switch C, and between Switch B and Switch D. 
Configure Switch B as a route reflector with client Switch A to allow Switch A to learn LS information 
advertised by Switch C and Switch D. 
Figure 81 Network diagram 
 
 
Configuration procedure 
1.  Configure IP addresses for interfaces and configure OSPF on Switch C and Switch D. (Details 
not shown.) 
2.  Configure BGP connections: 
# Configure Switch A. 
<SwitchA> system-view 
[SwitchA] bgp 100 
[SwitchA-bgp-default] peer 192.1.1.2 as-number 100 
[SwitchA-bgp-default] address-family link-state 
[SwitchA-bgp-default-ls] peer 192.1.1.2 enable 
[SwitchA-bgp-default-ls] quit 
[SwitchA-bgp-default] quit 
# Configure Switch B. 
<SwitchB> system-view 
[SwitchB] bgp 100 
[SwitchB-bgp-default] peer 192.1.1.1 as-number 100 
[SwitchB-bgp-default] peer 193.1.1.1 as-number 100 
[SwitchB-bgp-default] peer 194.1.1.1 as-number 100 
[SwitchB-bgp-default] address-family link-state 
[SwitchB-bgp-default-ls] peer 192.1.1.1 enable 
[SwitchB-bgp-default-ls] peer 193.1.1.1 enable 
[SwitchB-bgp-default-ls] peer 194.1.1.1 enable 
[SwitchB-bgp-default-ls] quit 
[SwitchB-bgp-default] quit 
# Configure Switch C. 
<SwitchC> system-view 
[SwitchC] bgp 100 
[SwitchC-bgp-default] peer 193.1.1.2 as-number 100 
[SwitchC-bgp-default] address-family link-state 
Vlan-
int11
192.
1.
1
.1
/2
4
Switch A
Switch B
Vlan-
int11
192.
1.
1
.2
/24
Switch 
C
Switch 
D
Vlan
-int12
193.1.1.1/24
Vlan-int12
193.1.1.2/24
Vlan-int13
194.1.1.2/24
Vlan-int13
194.1.1.1/24