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label-switched-path (Protocols IS-IS)


Hierarchy Level


Advertise label-switched paths (LSPs) into IS-IS as point-to-point links. The LSP is advertised in the appropriate IS-IS levels as a point-to-point link and contains a local address and a remote address.

When you advertise LSPs into IS-IS as point-to-point links, the LSPs are used in SPF calculations. The advertisement contains a local address (the from address of the LSP), a remote address (the to address of the LSP), and a metric.

Before a single-hop LSP between a multiaccess link can be announced as up and used in SPF calculations, you must configure an LSP in both directions between two label-switched routers.


name—Identifies the LSP.

level-number—IS-IS level number.

  • Values: 1 or 2

metric—Metric value.

  • Range: 1 through 63, or 1 through 16,777,215 (if you have configured wide metrics)

  • Default: 0 (for lo0), 10 (for all other interfaces)

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced before Junos OS Release 7.4.