ZyXEL Communications 43222612 User Manual page 173

Figure 138 Advanced Application > Spanning Tree Protocol > Status: MSTP
The following table describes the labels in this screen.
Table 70 Advanced Application > Spanning Tree Protocol > Status: MSTP
LABEL DESCRIPTION
Configuration Click Configuration to specify which STP mode you want to activate. Click MSTP to edit MSTP
settings on the Switch.
CST This section describes the Common Spanning Tree settings.
Bridge Root 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 and Our Bridge if the Switch is the root switch.
Hello Time This is the time interval (in seconds) at which the root switch transmits a configuration
(second) message. The root bridge determines Hello Time, Max Age and Forwarding Delay.
Max Age (second) This is the maximum time (in seconds) the Switch can wait without receiving a configuration
message before attempting to reconfigure.
Forwarding Delay This is the time (in seconds) the root switch will wait before changing states (that is, listening to
(second) 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 This field displays the configuration name for this MST region.
Name
Revision Number This field displays the revision number for this MST region.
Chapter 13 Spanning Tree Protocol
GS2220 Series User's Guide
173