Chapter 11 Spanning Tree Protocol

"This screen is only available after you activate RSTP on the Switch.

Figure 54 Advanced Application > Spanning Tree Protocol > Status: RSTP

The following table describes the labels in this screen.

Table 26 Advanced Application > Spanning Tree Protocol > Status: RSTP

LABEL

DESCRIPTION

Configuration

Click Configuration to specify which STP mode you want to activate. 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

This is the time interval (in seconds) at which the root switch transmits a

(second)

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

This is the time (in seconds) the root switch will wait before changing states (that

(second)

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

This is the number of times the spanning tree has been reconfigured.

Changed Times

 

 

 

Time Since Last

This is the time since the spanning tree was last reconfigured.

Change

 

108

 

GS-3012/GS-3012F User’s Guide