Configuring Track; Overview; Collaboration Fundamentals - HP VSR1000 High Availability Configuration Manual

Configuring Track

Overview

The Track module works between application modules and detection modules, as shown in
shields the differences between various detection modules from application modules.
Collaboration is enabled after you associate the Track module with a detection module and an
application module. The detection module probes specific objects such as interface status, link status,
network reachability, and network performance, and informs the Track module of detection results. The
Track module sends the detection results to the associated application module. When notified of changes
for the tracked object, the application modules can react to avoid communication interruption and
network performance degradation.
Figure 15 Collaboration through the Track module
Detection
module
NQA
BFD
Interface
management

Collaboration fundamentals

The Track module collaborates with detection modules and application modules:
• Collaboration between the Track module and a detection module
Collaboration between the Track module and an application module
•
Collaboration between the Track module and a detection module
The detection module sends the detection result of the associated tracked object to the Track module.
Depending on the result, the Track module changes the status of the track entry:
If the tracked object functions correctly (for example, the target interface is up or the target network
•
is reachable), the state of the track entry is Positive.
If the tracked object does not function correctly (for example, the target interface is down or the
•
target network is unreachable), the state of the track entry is Negative.
• If the detection result is not valid (for example, the NQA test group that is associated with the track
entry does not exist), the state of the track entry is NotReady.
The following detection modules can be associated with the Track module:
NQA.
•
Associates with
a detection entry
Track
module
Sends the
detection result
Application modules
Associates with
a track entry
Static route
Sends the track
entry status
Policy-based
54
VRRP
routing
Figure 15. It