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
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.