Associating Track with BFD
About Track association with BFD
BFD supports the control packet mode and echo packet mode. A track entry can be associated only with the echo-mode BFD session. For more information about BFD, see "Configuring BFD."
The associated Track and BFD operate as follows:
If the BFD detects that the link fails, it informs the Track module of the link failure. The Track module sets the track entry to Negative state.
If the BFD detects that the link is operating correctly, the Track module sets the track entry to Positive state.
Restrictions and guidelines
When you associate a track entry with BFD, do not configure the virtual IP address of a VRRP group as the local or remote address of the BFD session.
Prerequisites
Before you associate Track with BFD, configure the source IP address of BFD echo packets. For more information, see "Configuring BFD."
Procedure
Enter system view.
system-view
Create a track entry, and associate it with a BFD session.
track track-entry-number bfd echo interface interface-type interface-number remote ip remote-ip-address local ip local-ip-address [ delay { negative negative-time | positive positive-time } * ]