ZyXEL Communications GS2220 Series - Page 173

Chapter 13 Spanning Tree Protocol
GS2220 Series User’s Guide
173
Fig ure 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 DESCRIPTIO N
Configuration Click Co nfig ura tion 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 Ro o t refers to the base of the spanning tree (the root bridge). Our Bridg e 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 Ro o t and O ur Bridg e if the Switch is the root switch.
Hello Time
(second)
This is the time interval (in seconds) at which the root switch transmits a configuration
message. The root bridge determines He llo Tim e , Ma x Ag e and Fo rwa rding De la y.
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
(second)
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.