H3C Technologies H3C MSR 5600 - Manual (Page 65)

57
• If the BFD detects that the link fails, it informs the track entry 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.
Configuration prerequisites
Before you associate Track with BFD, configure the source IP address of BFD echo packets. For more
information, see "Configuring BFD."
Configuration procedure
To associate Track with BFD:
Step Command Remarks
1. Enter system view. system-view N/A
2. Create a track entry,
associate it with the BFD
session, and specify the delay
time for the Track module to
notify the associated
application module when the
track entry status changes.
track track-entry-number bfd echo interface
interface-type interface-number remote ip
remote-ip local ip local-ip [ delay { negative
negative-time | positive positive-time } * ]
No track entry is created
by default.
Do not configure the
virtual IP address of a
VRRP group as the local or
remote address of a BFD
session.
Associating Track with interface management
The interface management module monitors the link status or network-layer protocol status of the
interface. The interface management module functions as follows when it is associated with a track entry:
• When the link or network-layer protocol status of the interface changes to up, the interface
management module informs the Track module of the change and the Track module sets the track
entry to Positive.
• When the link or network-layer protocol status of the interface changes to down, the interface
management module informs the Track module of the change and the Track module sets the track
entry to Negative.
To associate Track with interface management:
Step Command Remarks
1. Enter system view. system-view N/A