Planet VC-820M User Manual page 182

The parameters must enforce the following relationships:
2*(hello-time + 1) <= maximum-age <= 2*(forward-delay - 1)
spanning-tree priority
Description:
Set spanning tree bridge priority of CIST and all MSTIs.
Syntax:
spanning-tree priority <0-61440>
Parameters:
<0-61440> specifies the bridge priority. The value must be in steps of 4096. Default value is 32768.
show spanning-tree
Description:
Show spanning-tree information.
show spanning-tree port
Description:
Show spanning tree per port information.
Syntax:
show spanning-tree port [<port-list>]
Parameters:
<port-list> specifies the port to be shown. Null means all ports.
spanning-tree protocol-version
Description:
Change spanning tree protocol version of CIST.
Syntax:
spanning-tree protocol-version <stp | mstp>
Parameters:
stp specifies the original spanning tree protocol (STP,802.1d).
mstp specifies the multiple spanning tree protocol (MSTP,802.1s)
spanning-tree max-hops
Description:
Set spanning tree bridge maximum hops of CIST and all MSTIs.
Syntax:
spanning-tree max-hops <1-40>
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User's Manual of VC-820M