Avaya Media Gateway G700 Manuale Utente

User Guides and Quick Start Guides for the expansion modules are available on the Avaya 
Support web site:

1. Go to the Avaya Support web site: 

2. In the list on under Technical Database, click on LAN, Backbone, and Edge Access 

Switches.

3. Under Wiring Closet & Distribution, click on P330 Stackable Switching System.

4. Click on All Documents.

5. Select the appropriate document for the expansion module you are installing.

Spanning Tree (STP) is a loop avoidance protocol. If you don't have loops in your network, you 
don't need STP. The "safe" option is always to leave STP enabled. Failure to do so on a network 
with a loop (or a network where someone inadvertently plugs the wrong cable into the wrong 
ports) will lead to a complete cessation of all traffic. Rapid Spanning Tree is a fast-converging 
protocol, faster than the earlier STP, that enables new ports much faster (sub-second) than the 
older protocol. Rapid Spanning Tree works with all Avaya equipment, and can be 
recommended. 

Rapid Spanning Tree is set using the P330 Stack Processor command line interface.

1. Open a telnet session on the P330 Stack Processor, using the serial cable connected to the 

Console port of the G700.

2. At the P330-x(super)# prompt, type set spantree help and press Enter to display the 

set spantree commands selection.

3. To enable Spanning Tree, type set spantree enable and press Enter.

4. To set the rapid spanning tree version, type set spantree version 

 and press Enter.

The 802.1w standard defines differently the default path cost for a port compared to STP 
(802.1d). In order to avoid network topology change when migrating to RSTP, the STP path 
cost is preserved when changing the spanning tree version to RSTP. You can use the 
default RSTP port cost by typing the CLI command set port spantree cost auto.