Chapter 13 Spanning Tree Protocol
GS2220 Series User’s Guide
165
13.4 Ra pid Spa nning Tre e Pro to c o l Sta tus
The Spanning Tree Protocol status screen changes depending on what standard you choose to
implement on your network. Click Adva nc e d Applic a tio n > Spa nning Tre e Pro to c o l in the navigation
panel to display the status screen as shown next. See
Section 13.1 on page 161 for more information on
RSTP.
Note: This screen is only available after you activate RSTP on the Switch.
Fig ure 134 Advanced Application > Spanning Tree Protocol > Status: RSTP
The following table describes the labels in this screen.
Table 66 Advanced Application > Spanning Tree Protocol > Spanning Tree Protocol Status: RSTP
LABEL DESCRIPTIO N
Configuration Click Co nfig ura tion to specify which STP mode you want to activate. Click RSTP to edit RSTP
settings on the Switch.
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).
Note: The listening state does NOT exist in RSTP.
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.
Topology
Changed Times
This is the number of times the spanning tree has been reconfigured.
Time Since Last
Change
This is the time since the spanning tree was last reconfigured.
Port This field displays the number of the port on the Switch.
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