R211x-HP Flexfabric 11900 Layer 3 - IP Routing Configuration Guide

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<SwitchC> system-view

[SwitchC] bgp 65009

[SwitchC-bgp] router-id 3.3.3.3

[SwitchC-bgp] peer 9.1.1.1 as-number 65009

# Enable GR capability for BGP.

[SwitchC-bgp] graceful-restart

# Enable Switch C to exchange IPv4 unicast routing information with Switch B.

[SwitchC-bgp-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.

BFD for BGP configuration example

Network requirements

As shown in Figure 68,

• Configure OSPF as the IGP in AS 200.

• Establish two IBGP connections between Switch A and Switch C. When both paths are working,

Switch C adopts the path Switch A<—>Switch B<—>Switch C to exchange packets with network

1.1.1.0/24. Configure BFD over the path. If the path fails, BFD can quickly detect the failure and

notify it to BGP. Then the path Switch A<—>Switch D<—>Switch C takes effect immediately.

Figure 68 Network diagram

Device Interface IP address

Device

Interface IP address

Switch A Vlan-int100 3.0.1.1/24 Switch C Vlan-int101 3.0.2.2/24

Vlan-int200 2.0.1.1/24

Vlan-int201 2.0.2.2/24

Switch B Vlan-int100 3.0.1.2/24

Switch D

Vlan-int200 2.0.1.2/24

Vlan-int101 3.0.2.1/24 Vlan-int201 2.0.2.1/24