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Configuring the Bandwidth Model

You must configure a bandwidth model on all routers participating in the Differentiated Services domain. The bandwidth models available are MAM, extended MAM, and RDM:

Maximum allocation bandwidth constraints model (MAM)—Defined in RFC 4125, Maximum Allocation Bandwidth Constraints Model for Diffserv-aware MPLS Traffic Engineering.
Extended MAM—A proprietary bandwidth model that behaves much like standard MAM. If you configure multiclass LSPs, you must configure the extended MAM bandwidth model.
Russian-dolls bandwidth allocation model (RDM)—Makes efficient use of bandwidth by allowing the class types to share bandwidth. RDM is defined in RFC 4127, Russian Dolls Bandwidth Constraints Model for Diffserv-aware MPLS Traffic Engineering.

To configure a bandwidth model, include the bandwidth-model statement and specify one of the bandwidth model options:




bandwidth-model {
extended-mam;
mam;
rdm;
}

You can include this statement at the following hierarchy levels:

[edit protocols mpls diffserv-te]
[edit logical-systems logical-system-name protocols mpls diffserv-te]

Note: If you change the bandwidth model on an ingress router, all the LSPs enabled on the router are taken down and resignaled.

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