Juniper ACX2000 Configuration Guide

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 no-accept-data statement:
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 accept-data statement, your router configuration does
not comply with RFC 3768 (see section 6.4.3 of RFC 3768, Virtual Router
Redundancy Protocol (VRRP).
Related
Documentation
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
Configuring a Logical Interface to Be Tracked
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;
659Copyright © 2017, Juniper Networks, Inc.
Chapter 21: Configuring Virtual Router Redundancy Protocol (VRRP)

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English