Hot-standby support for VPLS redundant pseudowires

Junos OS enables you to configure redundant pseudowires on devices. If a primary pseudowire fails, Junos OS switches service to a preconfigured redundant pseudowire. The time required for the redundant pseudowire to recover traffic from the primary pseudowire depends on the number of pseudowires and the option configured for pseudowire redundancy. There are three options: 

• Backup redundancy 
• Standby redundancy 
• Hot-standby 

The hot-standby option enables Junos OS to reduce the amount of traffic it discards during a transition from a primary to redundant pseudowire. Both the active and standby paths are kept open within the Layer 2 domain. Now you can configure the hot-standby option to configure pseudowires for virtual private LAN services (VPLS) running the Label Distribution Protocol (LDP).