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backup-neighbor

Syntax



backup-neighbor address {
community name;
psn-tunnel-endpoint address;
standby;
virtual-circuit-id number;
}

Hierarchy Level



[edit logical-systems logical-system-name protocols l2circuit neighbor address interface interface-name],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols
vpls neighbor address],
[edit protocols l2circuit neighbor address interface interface-name],
[edit routing-instances routing-instance-name protocols vpls neighbor address],

Release Information

Statement introduced in JUNOS Release 9.2.

Description

Configures pseudowire redundancy for Layer 2 circuits and VPLS. A redundant pseudowire can act as a backup connection between a PE router and a CE device, maintaining Layer 2 circuit and VPLS services after certain types of failures. This feature can help improve the reliability of certain types of networks where a single point of failure could interrupt service for multiple customers.

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.
The community, psn-tunnel-endpoint, and virtual-circuit-id statements are explained in detail in Summary of Layer 2 Circuit Configuration Statements.

Usage Guidelines

See Configuring Pseudowire Redundancy on the PE Router.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

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