R3721-F3210-F3171-HP High-End Firewalls High Availability Configuration Guide-6PW101
71
NOTE:
If the specified NQA test group or the reaction entry in the track entry does not exist, the status of the trac
k
entry is Invalid.
Associating track with BFD
BFD supports the control packet mode and echo mode. Only echo-mode BFD can be associated with a
track entry.
When associated with a track entry, the BFD functions as follows:
• If the BFD detects the link fails, it informs the track entry of the link failure. The track module then sets
the track entry to the Negative state.
• If the BFD detects the link is normal, the track module sets the track entry to the Positive state.
For more information about BFD, see “Configuring BFD.”
Configuration prerequisites
Before you associate track with BFD, configure the source address of the BFD echo packets.
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. When associated with a track entry, the interface management module functions as follows:
• 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: