Configuring Basic Vrrp Support - Juniper ACX1000 Configuration Manual

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Configuring Basic VRRP Support

Copyright © 2017, Juniper Networks, Inc.
then 64 unique VRRP group identifiers are supported. If both IPv4 and IPv6 families share
the same VRRP group, then only 32 unique VRRP identifiers are supported.
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
Example: Configuring VRRP on page 665
Example: Configuring VRRP for IPv6
An interface can be a member of one or more VRRP groups. To configure basic VRRP
support, configure VRRP groups on interfaces by including the
vrrp-group group-id {
priority number;
virtual-address [ addresses ];
}
You can include this statement at the following hierarchy level:
[edit interfaces interface-name unit logical-unit-number family inet address address]
Within a VRRP group, the master virtual router and the backup virtual router must be
configured on two different routers.
For each VRRP group, you must configure the following:
Group identifier—Assign a value from 0 through 255.
Address of one or more virtual routers that are members of the VRRP group—Normally,
you configure only one virtual IP address per group. However, you can configure up to
eight addresses. Do not include a prefix length in a virtual IP address. The following
considerations apply to configuring a virtual IP address:
The virtual router IP address must be the same for all routers in the VRRP group.
If you configure a virtual IP address to be the same as the physical interface's address,
the interface becomes the master virtual router for the group. In this case, you must
configure the priority to be 255, and you must configure preemption by including the
statement.
preempt
If the virtual IP address you choose is not the same as the physical interface's address,
you must ensure that the virtual IP address does not appear anywhere else in the
Chapter 21: Configuring Virtual Router Redundancy Protocol (VRRP)
statement:
vrrp-group
653