ds-te bc-model
Use ds-te bc-model to specify the bandwidth constraint (BC) model used in IETF DS-TE.
Use undo ds-te bc-model to restore the default.
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 is suitable for networks where traffic is unstable and traffic bursts might occur. RDM does not define the bandwidth for one class type (CT) but limits 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.
MAM is suitable for networks where traffic of each CT is stable. 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.
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