bridge spanningTree stpState

3500

9000

9400

3900

9300

bridge spanningTree stpState 259

Enables or disables the Spanning Tree Protocol (STP) on your system.

Valid Minimum Abbreviation

b sp stps

Important Considerations

The state of STP is configured in two places: the entire bridge (this command) and individual bridge ports. (See Chapter 10.) The combination of the states determines the forwarding behavior of each port, as shown in the following table:

 

 

Port Participates

Port Forwards

Bridge STP State

Port STP State

in STP?

Frames?

 

 

 

 

Disabled

Disabled

No

Yes, if link state is up.

 

 

 

 

 

Enabled

No

Yes, if link state is up.

 

 

 

 

 

Removed

No

Yes, if link state is up.

 

 

 

 

Enabled

Disabled

No

No

 

 

 

 

 

Enabled

Yes

Determined by STP,

 

 

 

provided that the link

 

 

 

state is up.

 

 

 

 

 

Removed

No

Yes, if link state is up.

 

 

 

 

After you enable STP, the system takes several seconds to process the command before the Administration Console menu reappears.

Although bridge-wide STP is initially disabled, default values exist for the following STP bridge parameters: priority, max age, hello time, forward delay, and group address. These values do not function until STP is enabled.

CoreBuilder® 3500 and CoreBuilder 9000 Layer 3 modules include an ignore STP mode option. See Chapter 14 in this guide or see your system Implementation Guide for more information.

Bridge-wide STP must be disabled on a CoreBuilder 9400 switch if you configure it as a MultiPoint Link Aggregation (MPLA) core switch. For more information about MPLA, see the CoreBuilder 9400 Implementation Guide.

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3Com 3500 manual Valid Minimum Abbreviation, Removed