Chapter 13 Spanning Tree Protocol

Note: This screen is only available after you activate MRSTP on the Switch.Figure 67 Advanced Application > Spanning Tree Protocol > Status: MRSTP

The following table describes the labels in this screen.

Table 37 Advanced Application > Spanning Tree Protocol > Status: MRSTP

LABEL

DESCRIPTION

Configuration

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

 

edit MRSTP settings on the Switch.

 

 

Tree

Select which STP tree configuration you want to view.

 

 

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 configuration

(second)

message. The root bridge determines Hello Time, Max Age and Forwarding Delay.

 

 

Max Age (second)

This is the maximum time (in seconds) a 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 is,

(second)

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

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

Times

 

 

 

Time Since Last

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

Change

 

 

 

 

135

ES3500 Series User’s Guide