Configuring A Logical Interface To Be Tracked - Juniper ACX1000 Configuration Manual

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Configuring a Logical Interface to Be Tracked

Copyright © 2017, Juniper Networks, Inc.
You can include this statement at the following hierarchy level:
[edit interfaces interface-name unit logical-unit-number family inet address address
vrrp-group group-id]
To prevent a master router that is the IP address owner or has its priority set to 255 from
accepting packets other than the ARP packets addressed to the virtual IP address, include
the statement:
no-accept-data
no-accept-data;
NOTE:
If you want to restrict the incoming IP packets to ICMP packets only, you
must configure firewall filters to accept only ICMP packets.
If you include the
not comply with RFC 3768 (see section 6.4.3 of RFC 3768, Virtual Router
Redundancy Protocol (VRRP).
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
Example: Configuring VRRP on page 665
Configuring VRRP for IPv6 on page 667
VRRP can track whether a logical interface is up, down, or not present, and can also
dynamically change the priority of the VRRP group based on the state of the tracked
logical interface, triggering a new master router election. VRRP can also track the
operational speed of a logical interface and dynamically update the priority of the VRRP
group when the speed crosses a configured threshold.
When interface tracking is enabled, you cannot configure a priority of 255 (a priority of
255 designates the master router). For each VRRP group, you can track up to 10 logical
interfaces.
To configure a logical interface to be tracked, include the following statements:
track {
interface interface-name {
bandwidth-threshold bits-per-second priority-cost priority;
priority-cost priority;
Chapter 21: Configuring Virtual Router Redundancy Protocol (VRRP)
statement, your router configuration does
accept-data
659