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target-attachment-identifier (Protocols VPWS)


Hierarchy Level


For FEC 129, specify the VPWS target attachment identifier. The point-to-point nature of VPWS requires that you specify the source access individual identifier (SAII) and the target access individual identifier (TAII). This SAII-TAII pair defines a unique pseudowire between two PE devices.

Auto-discovery routes are used by BGP to allow auto-discovery of SAIIs (the sources of the point-to-point pseudowires). One auto-discovery route is advertised for each source attachment identifier (SAI) in the instance or mesh group.

The SAII is specified with the source-attachment-identifier statement within the FEC 129 VPWS routing instance. You configure the source attachment identifier and the interfaces to associate with that source attachment identifier. Under each interface, you can configure the TAII with the target-attachment-identifier statement. If the configured target identifier matches a source identifier advertised by a remote PE device by way of a BGP auto-discovery message, the pseudowire between that source-target pair is signaled. If there is no match between an advertised source identifier and the configured target identifier, the pseudowire is not established.


identifier—The numerical identifier for the Layer 2 VPN site.

  • Range: 1 through 4,292,967,295

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 13.2.