ZyXEL Communications LAYER 3 ES-3124 - Manual (Page 279)

ES-3124 User’s Guide
Chapter 36 Configuration Mode Commands 277
36.3 Enabling STP
Use the spanning-tree or the mrstp commands to enable and configure STP on the switch.
The difference between the commands is that spanning-tree only allows you to set up one
spanning tree configuration and the mrstp command allows you to set up multiple ones.
Syntax:
spanning-tree
spanning-tree priority <0-61440>
spanning-tree hello-time <1-10> maximum-age <6-40> forward-
delay <4-30>
spanning-tree <port-list> path-cost <1-65535>
spanning-tree <port-list> priority <0-255>
and
mrstp <treeIndex> <cr>
mrstp <treeIndex> priority <0-61440>
mrstp <treeIndex> hello-time <1-10> maximum-age <6-40> forward-
delay <4-30>
mrstp interface <port-list> <cr>
mrstp interface <port-list> path-cost <1-65535>
mrstp interface <port-list> priority <0-255>
mrstp interface <port-list> treeIndex <1-2>
where
spanning-tree = Enables STP on the switch.
mrstp <treeIndex> Enables a specific tree configuration.
priority <0-61440> = Specifies the bridge priority for the switch. The lower the
numeric value you assign, the higher the priority for this bridge.
Bridge priority is used in determining the root switch, root port
and designated port. The switch with the highest priority
(lowest numeric value) becomes the STP root switch. If all
switches have the same priority, the switch with the lowest
MAC address will then become the root switch.
Bridge Priority determines the root bridge, which in turn
determines Hello Time, Max Age and Forwarding Delay.
hello-time <1-10> = Specifies the time interval in seconds between BPDU (Bridge
Protocol Data Units) configuration message generations by the
root switch.