Configuring Vrrp To Improve Convergence Time - Juniper EX9200 Features Manual

Related
Documentation

Configuring VRRP to Improve Convergence Time

Copyright © 2017, Juniper Networks, Inc.
To configure the distributed ppmd process to send VRRP advertisements over aggregated
Ethernet and IRB interfaces, include the
hierarchy level:
protocols vrrp]
[edit protocols vrrp]
delegate-processing ae-irb;
Understanding VRRP on page 119
delegate-processing (VRRP) on page 266
You can enable faster convergence time for the configured Virtual Router Redundancy
Protocol (VRRP), thereby reducing the traffic restoration time to less than 1 second. To
improve the convergence time for VRRP, perform the following tasks.
Before you begin, configure VRRP. See
Configure the distributed periodic packet management (PPM) process to send VRRP
1.
advertisements when the VRRP process is busy.
[edit]
user@host# set protocols vrrp delegate-processing
Disable the skew timer to reduce the time required to transition to the master state.
2.
[edit]
user@host# set protocols vrrp skew-timer-disable
NOTE: When there is only one master router and one backup router in the
network deployment, you can disable the skew timer, thereby reducing
the time required to transition to the master state.
Configure the number of fast advertisements that can be missed by a backup router
3.
before it starts transitioning to the master state.
[edit]
user@host# set protocols vrrp global-advertisement-threshold advertisement-value
Configure VRRP groups on the various subnets of a VLAN to inherit the state and to
4.
configure one of the groups.
[edit]
user@host# set interfaces interface-name unit logical-unit-number family inet address
address vrrp-group group-id
Verify the configuration.
5.
[edit]
user@host# show protocols vrrp
Chapter 14: Configuring VRRP
delegate-processing ae-irb
"Configuring VRRP" on page
statement at the
[edit
150.
149