Allied Telesis AT-GS950/24, Руководство пользователя

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Chapter 8: STP and RSTP
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The RSTP Configuration page allows you to configure basic STP
(STP-Compatible) or RSTP protocols as well as to view current
settings of the feature.

In the upper portion of the page, you can set the following
parameters:
Global RSTP Status - Set this field to activate or de-activate the
RSTP feature on the switch. From the Global RSTP Status fi eld
at the top of the page, select one of the following choices from the
pull-down menu:
Enable - The RSTP feature is active. The other parameter fields
on the web page become active and are eligible for data to be
entered.
Disable - The RSTP feature is inactive. The other parameter
fields on the web page become inactive and are greyed out so
that data cannot be entered.
Protocol Version - Set this field to activate RSTP or STP on the
switch. To activate this field, select RSTP or STP-compatible and
then click
Apply at the top of the page.

In the middle section of the page, the following fields are listed:
Note
You cannot change these fields.
Root Port - The active port on the switch that is communicating
with the root bridge. If the switch is the root bridge for the LAN,
then there is no root port and the root port parameter is set to 0.
Root Path Cost - The sum of all the root port costs of all the
bridges between the switch’s root port and the root bridge including
the switch’s root port cost.
Time Since Topology Change - The time in seconds since the
last topology change took place. When RSTP detects a change to
the LAN’s topology or when the switch is rebooted, this parameter
is reset to 0 seconds and begins incrementing until the next
topology change is detected.
Note
To update the Time Since Topology Change parameter, you must
refresh your browser.
Topology Change Count - An integer that reflects the number of
times RSTP has detected a topology change on the LAN since the
switch was initially powered on or rebooted.