Configuring A Route To Be Tracked - Juniper ACX1000 Configuration Manual

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Configuring a Route to Be Tracked

Copyright © 2017, Juniper Networks, Inc.
Table 46: Interface State and Priority Cost Usage
Tracked Interface State
Down
Not down; media speed below one or more
bandwidth thresholds
You must configure an interface priority cost only if you have configured no bandwidth
thresholds. If you have not configured an interface priority cost value, and the interface
is down, the interface uses the bandwidth threshold priority cost value of the lowest
bandwidth threshold.
Understanding VRRP on ACX Series Routers on page 651
Configuring Basic VRRP Support on page 653
Configuring the Advertisement Interval for the VRRP Master Router on page 655
Configuring a Backup Router to Preempt the Master Router on page 656
Modifying the Preemption Hold-Time Value on page 657
Configuring Asymmetric Hold Time for VRRP Routers on page 657
Configuring an Interface to Accept Packets Destined for the Virtual IP Address on
page 658
Configuring a Route to Be Tracked on page 661
Tracing VRRP Operations on page 664
Configuring the Silent Period on page 663
Example: Configuring VRRP on page 665
VRRP can track whether a route is reachable (that is, the route exists in the routing table
of the routing instance included in the configuration) and dynamically change the priority
of the VRRP group based on the reachability of the tracked route, triggering a new master
router election.
To configure a route to be tracked, include the following statements:
track {
priority-hold-time seconds;
route prefix/prefix-length routing-instance instance-name priority-cost priority;
}
Chapter 21: Configuring Virtual Router Redundancy Protocol (VRRP)
Priority Cost Usage
priority-cost priority
Priority-cost of the lowest applicable bandwidth
threshold
661