Virtual Private LAN Services
7210 SAS M Services Guide Page 401
link-type
Syntax link-type {pt-pt | shared}
no link-type
Context config>service>vpls>sap>stp
config>service>vpls>spoke-sdp>stp
Description This command instructs STP on the maximum number of bridges behind this SAP. If there is only a
single bridge, transitioning to forwarding state will be based on handshaking (fast transitions). If
more than two bridges are connected via a shared media, their SAP should all be configured as
shared, and timer-based transitions are used.
The no form of this command returns the link type to the default value.
Default pt-pt
mst-instance
Syntax mst-instance mst-inst-number
Context config>service>vpls>sap>stp
Description This command enables the context to configure MSTI related parameters at SAP level. This context
can be open only for existing mst-instances defined at the service level.
Default none
Parameters mst-inst-number — Specifies an existing Multiple Spanning Tree Instance number.
Values 1 — 4094
mst-path-cost
Syntax mst-path-cost inst-path-cost
no mst-path-cost
Context config>service>vpls>sap>stp>mst-instance
Description This commands specifies path-cost within a given instance. If a loop occurs, this parameter indicates
the probability of a given port being assigned a forwarding state. (The highest value expresses lowest
priority).
The no form of this command sets port-priority to its default value.
Default The path-cost is proportional to link speed.
Parameters inst-path-cost — Specifies the contribution of this port to the MSTI path cost.
Values 1 — 200000000
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