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• Between Switch A and Switch B is an EBGP connection, between Switch C and Switch B, and
between Switch C and Switch D are IBGP connections.
• Switch C is a route reflector with clients Switch B and D.
• Switch D can learn route 20.0.0.0/8 from Switch C.
Figure 68 Network diagram
Configuration procedure
1. Configure IP addresses for interfaces. (Details not shown.)
2. Configure BGP connections:
# Configure Switch A.
<SwitchA> system-view
[SwitchA] bgp 100
[SwitchA-bgp] router-id 1.1.1.1
[SwitchA-bgp] peer 192.1.1.2 as-number 200
[SwitchA-bgp] address-family ipv4 unicast
[SwitchA-bgp-ipv4] peer 192.1.1.2 enable
# Inject network 20.0.0.0/8 to the BGP routing table.
[SwitchA-bgp-ipv4] network 20.0.0.0
[SwitchA-bgp-ipv4] quit
[SwitchA-bgp] quit
# Configure Switch B.
<SwitchB> system-view
[SwitchB] bgp 200
[SwitchB-bgp] router-id 2.2.2.2
[SwitchB-bgp] peer 192.1.1.1 as-number 100
[SwitchB-bgp] peer 193.1.1.1 as-number 200
[SwitchB-bgp] address-family ipv4 unicast
[SwitchB-bgp-ipv4] peer 192.1.1.1 enable
[SwitchB-bgp-ipv4] peer 193.1.1.1 enable
[SwitchB-bgp-ipv4] peer 193.1.1.1 next-hop-local
[SwitchB-bgp-ipv4] quit
[SwitchB-bgp] quit
# Configure Switch C.
<SwitchC> system-view
[SwitchC] bgp 200
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