3Com 2924-SFP User Manual page 131

Global Setting
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Bridge Setting
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Spanning Tree State — Indicates whether STP is enabled on the
device. The possible field values are:
Classic — Enables STP on the device.
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RSTP — Enables RSTP on the device.
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Disable — Disables STP and RSTP on the device.
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BPDU Handling — Determines how BPDU packets are managed
when STP is disabled on the port or device. BPDUs are used to
transmit spanning tree information. The possible field values are:
Filtering — Filters BPDU packets when spanning tree is disabled on
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an interface. This is the default value.
Flooding — Floods BPDU packets when spanning tree is disabled
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on an interface.
Path Cost Default Values — Specifies the method used to assign
default path cost to STP ports. The possible field values are:
Short — Specifies 1 through 65,535 range for port path cost. This
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is the default value.
Long — Specifies 1 through 200,000,000 range for port path cost.
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The default path cost assigned to an interface varies according to
the selected method (Hello Time, Max Age, or Forward Delay).
Priority — Specifies the bridge priority value. When switches or
bridges are running STP, each is assigned a priority. After exchanging
BPDUs, the device with the lowest priority value becomes the Root
Bridge. The field range is 0-61440
port priority value is provided in increments of 4096.
Hello Time — Specifies the device Hello Time. The Hello Time
indicates the amount of time in seconds a Root Bridge waits between
configuration messages. The default is 2 seconds.
Max Age — Specifies the device Maximum Age Time. The Maximum
Age Time is the amount of time in seconds a bridge waits before
sending configuration messages. The default Maximum Age Time is
20 seconds.
Forward Delay — Specifies the device Forward Delay Time. The
Forward Delay Time is the amount of time in seconds a bridge remains
in a listening and learning state before forwarding packets. The
default is 15 seconds.
Defining Spanning Tree
The default value is 32768. The
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