Juniper ACX2000 Configuration Guide

To configure pseudowire redundancy on the PE router, include the backup-neighbor
statement:
backup-neighbor {
community name;
psn-tunnel-endpoint address;
standby;
virtual-circuit-id number;
}
For a list of hierarchy levels at which you can include this statement, see the statement
summary for this statement.
The backup-neighbor statement includes the following configuration options:
•
community—Specifies the community for the backup neighbor.
•
psn-tunnel-endpoint—Specifies the endpoint address for the packet switched network
(PSN) tunnel on the remote PE router. The PSN tunnel endpoint address is the
destination address for the LSP on the remote PE router.
•
standby—Configures the pseudowire to the specified backup neighbor as the standby.
When you configure this statement, traffic flows over both the active and standby
pseudowires to the CE device. The CE device drops the traffic from the standby
pseudowire, unless the active pseudowire fails. If the active pseudowire fails, the CE
device automatically switches to the standby pseudowire.
•
virtual-circuit-id—Uniquely identifies the primary and standby Layer 2 circuits. This
option is configurable for Layer 2 circuits only.
Configuring the Switchover Delay for the Pseudowires
To configure the time the router waits before switching traffic from the failed primary
pseudowire to a backup pseudowire, include the switchover-delay statement:
switchover-delay milliseconds;
For a list of hierarchy levels at which you can include this statement, see the statement
summary for this statement.
Configuring a Revert Time for the Redundant Pseudowire
You can specify a revert time for redundant Layer 2 circuit and VPLS pseudowires. When
you have configured redundant pseudowires for Layer 2 circuits or VPLS, traffic is switched
to the backup pseudowire in the event that the primary pseudowire fails. If you configure
a revert time, when the configured time expires traffic is reverted back to the primary
pseudowire, assuming the primary pseudowire has been restored.
To configure a revert time for redundant pseudowires, specify the time in seconds using
the revert-time statement:
revert-time (Protocols Layer 2 Circuits) seconds maximum seconds;
With the maximum option, specify a maximum reversion interval to add after the
revert-time delay. If a revert-time delay is defined but a maximum timer is not defined,
VCs are restored upon the revert-timer's expiration.
607Copyright © 2017, Juniper Networks, Inc.
Chapter 20: Configuring MPLS and Pseudowires

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English