Example for Configuring Dynamic BFD for IPv4 Static Routes

Procedure

1. Add interfaces to VLANs.

   <HUAWEI> system-view
   [~HUAWEI] sysname SwitchA
   [*HUAWEI] commit
   [~SwitchA] vlan 10
   [*SwitchA-vlan10] quit
   [*SwitchA] interface 10ge 1/0/1
   [*SwitchA-10GE1/0/1] port link-type trunk
   [*SwitchA-10GE1/0/1] port trunk allow-pass vlan 10
   [*SwitchA-10GE1/0/1] quit
   [*SwitchA] vlan 20
   [*SwitchA-vlan20] quit
   [*SwitchA] interface 10ge 1/0/2
   [*SwitchA-10GE1/0/2] port link-type trunk
   [*SwitchA-10GE1/0/2] port trunk allow-pass vlan 20
   [*SwitchA-10GE1/0/2] quit
   [*SwitchA] commit

   The configuration of SwitchB is similar to that of SwitchA, and is not provided here.

2. Assign IP addresses to the VLANIF interfaces.

   [~SwitchA] interface vlanif 10
   [*SwitchA-Vlanif10] ip address 192.168.1.1 24
   [*SwitchA-Vlanif10] quit
   [*SwitchA] interface vlanif 20
   [*SwitchA-Vlanif20] ip address 10.7.1.1 24
   [*SwitchA-Vlanif20] quit
   [*SwitchA] commit

   The configuration of SwitchB is similar to that of SwitchA, and is not provided here.

3. Configure static routes.

   # Configure a static route to 10.8.1.1/24 on SwitchA.

   [~SwitchA] ip route-static 10.8.1.1 24 192.168.1.2

   [*SwitchA] commit

   # Configure a static route to 10.7.1.1/24 on SwitchB.

   [~SwitchB] ip route-static 10.7.1.1 24 192.168.1.1

   [*SwitchB] commit

4. Configure dynamic BFD for static routes.

   # Bind a static route to a BFD session on SwitchA.

   [~SwitchA] bfd

   [*SwitchA-bfd] quit

   [*SwitchA] ip route-static bfd 192.168.1.2 local-address 192.168.1.1

   [*SwitchA] ip route-static 10.8.1.1 24 192.168.1.2 bfd enable

   [*SwitchA] commit

   # Bind a static route to a BFD session on SwitchB.

   [~SwitchB] bfd

   [*SwitchB-bfd] quit

   [*SwitchB] ip route-static bfd 192.168.1.1 local-address 192.168.1.2

   [*SwitchB] ip route-static 10.7.1.1 24 192.168.1.1 bfd enable

   [*SwitchB] commit

5. Verify the configuration.

   # When the configuration is complete, run the display bfd session all verbose command on SwitchA and SwitchB. The command output shows that the BFD session is established, the BFD session status is Up, and static routes are bound to BFD sessions.

   Take the display on SwitchA as an example.

   [~SwitchA] display bfd session all verbose

   (w): State in WTR
   (*): State is invalid
   Total UP/DOWN Session Number : 1/0
   --------------------------------------------------------------------------------
     Name : dyn_16390             (Multiple Hops) State : Up
   --------------------------------------------------------------------------------
     Local Discriminator    : 16390             Remote Discriminator   : 16388
     Session Detect Mode    : Asynchronous Mode Without Echo Function
     BFD Bind Type          : Peer IP Address
     Bind Session Type      : Dynamic
     Bind Peer IP Address   : 192.168.1.2
     Bind Interface         : -
     Bind Source IP Address : 192.168.1.1
     FSM Board ID           : 1                  ToS-EXP                : 7
     Min Tx Interval (ms)   : 1000               Min Rx Interval (ms)   : 1000
     Actual Tx Interval (ms): 1000               Actual Rx Interval (ms): 1000
     WTR Interval (ms)      : -                  Detect Interval (ms)   : 3000
     Local Detect Multi     : 3                  Active Multi           : 3
     Destination Port       : 4784               TTL                    : 253
     Process PST            : Disable            Config PST             : Disable
     Last Local Diagnostic  : No Diagnostic
     Bind Application       : STATICRT
     Session Description    : -
   --------------------------------------------------------------------------------