ZyXEL Communications GS1920-24HPv2 - Page 281

Chapter 46 Spanning Tree Protocol
GS1920v2 Series User’s Guide
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Figure 197 SWITCHING > Spanning Tree Protocol > Spanning Tree Protocol Status: MSTP
The following table describes the labels in this screen.
Table 148 SWITCHING > Spanning Tree Protocol > Spanning Tree Protocol Status: MSTP
LABEL DESCRIPTION
CST
This section describes the Common Spanning Tree settings.
Bridge Root Bridge refers to the base of the spanning tree (the root bridge). Our Bridge is this switch.
This Switch may also be the root bridge.
Bridge ID This is the unique identifier for this bridge, consisting of bridge priority plus MAC address. This ID
is the same for Root Bridge and Our Bridge if the Switch is the root switch.
Hello Time
(seconds)
This is the time interval (in seconds) at which the root switch transmits a configuration
message. The root bridge determines Hello Time, Max Age and Forwarding Delay.
Max Age
(seconds)
This is the maximum time (in seconds) the Switch can wait without receiving a configuration
message before attempting to reconfigure.
Forwarding Delay
(seconds)
This is the time (in seconds) the root switch will wait before changing states (that is, listening to
learning to forwarding).
Cost to Bridge This is the path cost from the root port on this Switch to the root switch.
Port ID This is the priority and number of the port on the Switch through which this Switch must
communicate with the root of the Spanning Tree.
Configuration
Name
This field displays the configuration name for this MST region.
Revision Number This field displays the revision number for this MST region.