HP VPN Firewall Appliances High Availability Configuration Guide

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An NQA test group functions as follows when it is associated with a track entry:
• If the consecutive failures reach the specified threshold, the NQA module tells the Track module that
the tracked object malfunctions. Then the Track module sets the track entry to Negative state.
• If the specified threshold is not reached, the NQA module tells the Track module that the tracked
object functions correctly. The Track module then sets the track entry to Positive state.
For more information about NQA, see "Configuring NQA."
To associate Track with NQA:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Create a track entry, associate it with an
NQA reaction entry, 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 nqa
entry admin-name operation-tag
reaction item-number [ delay
{ negative negative-time | positive
positive-time } * ]
No track entry is created
by default.
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
The following matrix shows the feature and hardware compatibility:
Hardware Com
p
atibilit
y
F1000-A-EI/F1000-S-EI No
F1000-E No
F5000 Yes
F5000-S/F5000-C No
VPN firewall modules No
20-Gbps VPN firewall modules No
BFD supports the control packet mode and echo packet mode:
• Associating a track entry with the echo-mode BFD session detects a directly connected link. Before
that, you must configure the source IP address of BFD echo packets.
• Associating a track entry with the control-mode BFD session detects an indirectly connected link.
You must make this configuration for both the local and remote ends. Otherwise, BFD does not take
effect.
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 the Negative state.
• If the BFD detects that the link is normal, the Track module sets the track entry to the Positive state.
For more information about BFD, see "Configuring BFD."