Using the BayStack 350 Series 10/100 Autosense Switch
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893-00992-E
Table 3-27. Spanning Tree Port Configuration screen fields
Field Description
Port
Indicates the switch port numbers, from 1 to 16, that correspond to the field settings in
that row of the screen (for example, the field settings in row 2 apply to switch port 2).
Note that the settings in the All row (bottom row) affect all 16 switch ports.
Trunk
The read-only data displayed in this column indicates the trunks (if configured) that
correspond to the switch ports specified in the Trunk Members fields of the Trunk
Configuration screen (see “MultiLink Trunk Configuration
” on page 3-39).
Participation
Allows you to enable or disable any (or all) of the switch ports for Spanning tree
participation. When an individual port is a trunk member (see Trunk field), changing this
setting for one of the trunk members changes the setting for all members of that trunk.
You should consider how this can change your network topology before you change this
setting (see “MultiLink Trunking Configuration Rules” on page 1-41). The Fast Learning
value is the same as Normal Learning except that the port state transition timer is
shortened to two seconds.
Default Normal Learning
Range Normal Learning, Fast Learning, Disabled
Priority
This read-only field is a bridge spanning tree parameter that prioritizes the port’s lowest
path cost to the root. When one or more ports have the same path cost, the STA selects
the path with the highest priority (lowest numerical value). See also Path Cost.
Default 128
Range 0 to 255
Path Cost
This read-only field is a bridge spanning tree parameter that determines the lowest path
cost to the root.
Default 10 or 100
Path Cost = 1000/LAN speed (in Mb/s)
The higher the LAN speed, the lower the path cost.
See also Priority.
Range 1 to 65535
State
This read-only field indicates the current port state within the spanning tree network.
Each port can transition to various states, as determined by the Participation field setting.
For example, when the Participation field is set to Disabled, the port does not participate
in the STA and transitions to the Forwarding state (the default). When the Participation
field is set to Enabled, the port transitions from the Disabled state through the Blocking,
Listening, and Learning states before entering the Forwarding state.
Default Topology dependent
Range Disabled, Blocking, Listening, Learning, Forwarding
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