ZyXEL Communications GS1915 Series, Руководство пользователя

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Chapter 13 Spanning Tree Protocol
GS1915 Series User’s Guide
142
13.2 Rapid Spanning Tree Protocol Status
Click Advanced Application > Spanning Tree Protocol in the navigation panel to display the status
screen as shown next. See Section 13.1 on page 140 for more information on RSTP.
Figure 104 Advanced Application > Spanning Tree Protocol
The following table describes the labels in this screen.
Table 63 Advanced Application > Spanning Tree Protocol
LABEL DESCRIPTION
RSTP Click RSTP to edit RSTP settings on the Switch.
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
(second) 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 (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.