Bgp Gr Configuration - 3Com S7906E Configuration Manual

BGP GR Configuration

Network requirements
In the following figure are all BGP switches. Between Switch A and Switch B is an eBGP connection.
Switch B and Switch C are connected over an iBGP connection. Enable GR Capability for BGP so that
the communication between Switch A and Switch C is not affected when an active/standby main board
switchover occurs on Switch B.
Figure 1-28 Network diagram for BGP GR configuration
Configuration procedure
1) Configure Switch A
# Configure IP addresses for interfaces (omitted).
# Configure the eBGP connection.
<SwitchA> system-view
[SwitchA] bgp 65008
[SwitchA-bgp] router-id 1.1.1.1
[SwitchA-bgp] peer 200.1.1.1 as-number 65009
# Inject network 8.0.0.0/8 to the BGP routing table.
[SwitchA-bgp] network 8.0.0.0
# Enable GR capability for BGP.
[SwitchA-bgp] graceful-restart
2) Configure Switch B
# Configure IP addresses for interfaces (omitted).
# Configure the eBGP connection.
<SwitchB> system-view
[SwitchB] bgp 65009
[SwitchB-bgp] router-id 2.2.2.2
[SwitchB-bgp] peer 200.1.1.2 as-number 65008
# Configure the iBGP connection.
[SwitchB-bgp] peer 9.1.1.2 as-number 65009
# Redistribute direct routes.
[SwitchB-bgp] import-route direct
# Enable GR capability for BGP.
[SwitchB-bgp] graceful-restart
3) Configure Switch C
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