Spanning-Tree - Motorola RFS7000 Series Reference Manual

7.1.16 spanning-tree

Interface Config commands
Use this command to configure spanning tree parameters.
Syntax
spanning-tree [bpdufilter(enable|disable)|bpduguard
(enable|disable)|edgeport|force-version <0-3>|guard (root)|link-type (point-to-
point|shared)|mst(<0-15>|port-cisco-interoperability)|portfast]
spanning-tree mst [<0-15>(cost <1-200000000>|port-priority <0-240>)|
port-cisco-interoperability (disable|enable)]
Parameters
bpdufilter (disable|enable) Use this command to set a portfast BPDU filter for the port.
bpduguard
(disable|enable)
edgeport
force-version <0-3>
guard (root)
link-type
(point-to-point|shared)
Use the parameter with this command to revert the port BPDU filter value to
no
default.
The spanning tree protocol sends BPDUs from all ports. Enabling the BPDU filter
ensures PortFastenabled ports do not transmit or receive BPDUs.
Use this command to enable or disable the BPDU guard feature on a port.
Use the parameter with this command to set the BPDU guard feature on a port
no
to default values.
When BPDU guard is set for a bridge, all portfast-enabled ports that have
bpdu-guard set to default shut down the port upon receiving a BPDU. In this
occurs, the BPDU is not processed. The port can be brought back either manually
(using the no shutdown command), or by configuring the errdisable-timeout to
enable the port after the specified interval.
Enables an interface as an edgeport.
Specifies the spanning-tree force version. A version identifier of less than 2
enforces the spanning tree protocol.
Select from the following versions:
• 0 – STP
• 1 – Not supported.
• 2 – RSTP
• 3 – MSTP
The default value for forcing the version is MSTP.
Enables the Root Guard feature for the port. The root guard disables the
reception of superior BPDUs.
The Root Guard ensures the port on which it is enabled is a designated port. If
the Root Guard enabled port receives a superior BPDU, it goes to a discarding
state.
Use the parameter with this command to disable the root guard feature.
no
Enables or disables point-to-point or shared link types.
• point-to-point – enables rapid transition.
• shared – disables rapid transition.
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