H3C Technologies H3C SR8800 - Manual (Page 277)

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# Configure BFD over the link to peer 3.0.2.2 so that when the link Router A<—>Router
B<—>Router C fails, BFD can quickly detect the failure and notify it to BGP, and then the link
Router A<—>Router D<—>Router C takes effect immediately.
[RouterA-bgp] peer 3.0.2.2 bfd
[RouterA-bgp] quit
4. Configure BGP on Router C:
system-view
[RouterC] bgp 200
[RouterC-bgp] peer 3.0.1.1 as-number 200
[RouterC-bgp] peer 3.0.1.1 bfd
[RouterC-bgp] peer 2.0.1.1 as-number 200
[RouterC-bgp] quit
5. Configure BFD parameters (you can use default BFD parameters instead):
# Configure Router A.
[RouterA] bfd session init-mode active
[RouterA] interface GigabitEthernet 3/1/2
{
Configure the minimum interval for transmitting BFD control packets as 500 milliseconds.
[RouterA-GigabitEthernet3/1/2] bfd min-transmit-interval 500
{
Configure the minimum interval for receiving BFD control packets as 500 milliseconds.
[RouterA-GigabitEthernet3/1/2] bfd min-receive-interval 500
{
Configure the detect multiplier as 7.
[RouterA-GigabitEthernet3/1/2] bfd detect-multiplier 7
[RouterA-GigabitEthernet3/1/2] quit
# Configure Router C.
[RouterC] bfd session init-mode active
[RouterC] interface GigabitEthernet 3/1/1
[RouterC-GigabitEthernet3/1/1] bfd min-transmit-interval 500
[RouterC-GigabitEthernet3/1/1] bfd min-receive-interval 500
[RouterC-GigabitEthernet3/1/1] bfd detect-multiplier 7
[RouterC-GigabitEthernet3/1/1] return
6. Verify the configuration:
The following operations are made on Router C. Operations on Router A are similar and are thus
not shown.
# Display detailed BFD session information.
display bfd session verbose
Total Session Num: 1 Init Mode: Active
IP Session Working Under Ctrl Mode:
Local Discr: 17 Remote Discr: 13
Source IP: 3.0.2.2 Destination IP: 3.0.1.1
Session State: Up Interface: GigabitEthernet3/1/1
Min Trans Inter: 500ms Act Trans Inter: 500ms
Min Recv Inter: 500ms Act Detect Inter: 3500ms
Recv Pkt Num: 57 Send Pkt Num: 53