R3303-HP HSR6800 Routers High Availability Configuration Guide

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The BFD functions as follows when it is associated with a track entry:
• If the BFD detects that the link fails, it informs the track entry of the link failure. The Track module then
sets the track entry to Negative state.
• If the BFD detects that the link is normal, the Track module sets the track entry to Positive state.
For more information about BFD, see "Configuring BFD."
Configuration procedure
To associate Track with BFD:
Ste
p
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.
NOTE:
W
hen associatin
g
Track with BFD, do not confi
g
ure the virtual IP address of a VRRP
g
roup as the local or
remote address of a BFD session.
Associating Track with interface management
The interface management module monitors the physical 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 physical 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 physical 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:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A