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<SwitchA> system-view
[SwitchA] bgp 65008
[SwitchA-bgp-default] router-id 1.1.1.1
[SwitchA-bgp-default] peer 200.1.1.1 as-number 65009
# Enable GR capability for BGP.
[SwitchA-bgp-default] graceful-restart
# Inject network 8.0.0.0/8 to the BGP routing table.
[SwitchA-bgp-default] address-family ipv4
[SwitchA-bgp-default-ipv4] network 8.0.0.0
# Enable Switch A to exchange IPv4 unicast routing information with Switch B.
[SwitchA-bgp-default-ipv4] peer 200.1.1.1 enable
2. Configure Switch B:
# Configure IP addresses for interfaces. (Details not shown.)
# Configure the EBGP connection.
<SwitchB> system-view
[SwitchB] bgp 65009
[SwitchB-bgp-default] router-id 2.2.2.2
[SwitchB-bgp-default] peer 200.1.1.2 as-number 65008
# Configure the IBGP connection.
[SwitchB-bgp-default] peer 9.1.1.2 as-number 65009
# Enable GR capability for BGP.
[SwitchB-bgp-default] graceful-restart
# Inject networks 200.1.1.0/24 and 9.1.1.0/24 to the BGP routing table.
[SwitchB-bgp-default] address-family ipv4
[SwitchB-bgp-default-ipv4] network 200.1.1.0 24
[SwitchB-bgp-default-ipv4] network 9.1.1.0 24
# Enable Switch B to exchange IPv4 unicast routing information with Switch A and Switch C.
[SwitchB-bgp-default-ipv4] peer 200.1.1.2 enable
[SwitchB-bgp-default-ipv4] peer 9.1.1.2 enable
3. Configure Switch C:
# Configure IP addresses for interfaces. (Details not shown.)
# Configure the IBGP connection.
<SwitchC> system-view
[SwitchC] bgp 65009
[SwitchC-bgp-default] router-id 3.3.3.3
[SwitchC-bgp-default] peer 9.1.1.1 as-number 65009
# Enable GR capability for BGP.
[SwitchC-bgp-default] graceful-restart
# Enable Switch C to exchange IPv4 unicast routing information with Switch B.
[SwitchC-bgp-default-ipv4] peer 9.1.1.1 enable
Verifying the configuration
Ping Switch C on Switch A. Meanwhile, perform an active/standby switchover on Switch B. The ping
operation is successful during the whole switchover process. (Details not shown.)
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