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Configuring Multiclass LSPs

A multiclass LSP is an LSP configured to reserve bandwidth for multiple class types and also carries the traffic for these class types. The differentiated service behavior is determined by the EXP bits.

You must configure the Differentiated Services domain (see Configuring DiffServ-Aware Traffic Engineering) before you can enable a multiclass LSP. The Differentiated Services domain provides the underlying class types and corresponding traffic engineering classes that you reference in a multiclass LSP configuration. The traffic engineering classes must be configured consistently on each router participating in the Differentiated Services domain for the multiclass LSP to function properly.

Note: You must configure extended MAM as the bandwidth model when you configure multiclass LSPs. See Configuring the Bandwidth Model.

All the routers participating in a multiclass LSP must be Juniper Networks routing platforms running JUNOS Release 6.2 or later. The network can include routers from other vendors and Juniper Networks routers running earlier versions of the JUNOS software. However, the multiclass LSP cannot traverse these routers.

To enable multiclass LSPs, you need to configure the following:

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