4000 Router Series MPLS Command Reference

Syntax

ds-te bc-model mam

undo ds-te bc-model

Default

The BC model of IETF DS-TE is Russian Dolls Model (RDM).

Views

MPLS TE view

Predefined user roles

network-admin

Parameters

mam: Specifies the BC model as Maximum Allocation Model (MAM).

Usage guidelines

RDM does not define the bandwidth for one class type (CT) but limit the shared bandwidth for multiple

CTs. In cooperation with priority preemption, the RDM model can also implement the isolation between

CTs, ensuring each CT its share of bandwidth. RDM is suitable for networks where traffic is unstable and

traffic bursts might occur.

MAM constrains the bandwidth for only one CT on an interface. This ensures isolation between CTs no

matter whether preemption is used or not. Compared with RDM, MAM is easy to understand and

configure. MAM is suitable for networks where traffic of each CT is stable.

When using this command, note the following guidelines:

• This command applies only to IETF DS-TE. The prestandard DS-TE only uses RDM.

• After you change the BC model in IETF DS-TE mode, all nonzero-bandwidth CRLSPs on the device

are deleted and then re-established.

Examples

# Specify the BC model of IETF DS-TE as MAM.

<Sysname> system-view

[Sysname] mpls te

[Sysname-te] ds-te bc-model mam

Related commands

• display mpls te ds-te

• ds-te mode

ds-te te-class

Use ds-te te-class to configure a TE class used in IETF DS-TE mode.

Use undo ds-te te-class to restore the default.

Syntax

ds-te te-class te-class-index class-type class-type-number priority priority-number

undo ds-te te-class te-class-index