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Create a track entry, associate it with
the interface management module to
monitor the physical status of an
interface, 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 interface
interface-type interface-number [
delay { negative negative-time |
positive positive-time } * ]
Required
Use either approach
No track entry is created
by default.
Create a track entry, associate it with
the interface management module to
monitor the Layer 3 protocol status of
an interface, 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 interface
interface-type interface-number
protocol { ipv4 | ipv6 } [ delay {
negative negative-time | positive
positive-time } * ]
Associating the track module with an application
module
Associating track with static routing
A static route is a manually configured route. With a static route configured, packets to the specified
destination are forwarded through the path specified by the administrator.
The disadvantage of using static routes is that they cannot adapt to network topology changes. Faults or
topological changes in the network can make the routes unreachable, causing network breaks.
To prevent this problem, configure another route to back up the static route. When the static route is
reachable, packets are forwarded through the static route. When the static route is unreachable, packets
are forwarded through the backup route, avoiding network breaks and enhancing network reliability.
To check the accessibility of a static route in real time, establish association between the track and the
static route.
If you specify the next hop but not the egress interface when configuring a static route, you can establish
collaborations among the static route, the track module, and detection modules. This enables you to
check the accessibility of the static route by the status of the track entry.
The Positive state of the track entry shows that the next hop of the static route is reachable and that
the configured static route is valid.
The Negative state of the track entry shows that the next hop of the static route is not reachable and
that the configured static route is invalid.
The Invalid state of the track entry shows that the accessibility of the next hop of the static route is
unknown and that the static route is valid.
Follow these steps to associate track with static routing:
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