Alcatel-Lucent 7750 SR Manual page 667

Os services guide

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mst-instance

[no] mst-instance mst-inst-number

config>service>vpls>stp

This command creates the context to configure MST instance (MSTI) related parameters. Up to 16

instances will be supported by MSTP. The instance 0 is mandatory by protocol and therefore, it

cannot be created by the CLI. The software will maintain this instance automatically.

mst-inst-number — Specifies the Multiple Spanning Tree instance.

mst-priority

mst-priority bridge-priority

no mst-priority

config>service>vpls>stp>mst-instance

This command specifies the bridge priority for this specific Multiple Spanning Tree Instance for this

service. The bridge-priority value reflects likelihood that the switch will be chosen as the regional

root switch (65535 represents the least likely). It is used as the highest 4 bits of the Bridge ID

included in the MSTP BPDU's generated by this bridge.

The priority can only take on values that are multiples of 4096 (4k). If a value is specified that is not a

multiple of 4K, then the value will be replaced by the closest multiple of 4K, which is lower than the

value entered.

The no form of this command sets the bridge-priority to its default value.

32768 — All instances created by vlan-range command and not having explicit definition of bridge-

priority will inherit default value.

bridge-priority — Specifies the priority of this specific Multiple Spanning Tree Instance for this

[no] vlan-range [vlan-range]

config>service>vpls>stp>mst-instance

This command specifies a range of VLANs associated with a certain MST-instance. This range

applies to all SAPs of the mVPLS.

Every VLAN range that is not assigned within any of the created mst-instance is automatically

assigned to mst-instance 0. This instance is automatically maintained by the software and cannot be

7750 SR OS Services Guide

Virtual Private LAN Services