Avaya P332G-ML manual Stack Redundancy, Spanning Tree, Hot-Swappable, Radius Security

Chapter 1 Overview

Stack Redundancy

In the unlikely event that a P330 switch or Octaplane link should fail, stack integrity is maintained if the redundant cable is connected to the stack. The broken link is bypassed and data transmission continues uninterrupted. The single management IP address for the stack is also preserved for uninterrupted management and monitoring.

Spanning Tree

P332G-ML supports the IEEE 802.1D Standard Spanning Tree Protocol. This protocol detects and eliminates logical loops in the network and automatically places some ports on standby to form a network with the most efficient pathways.

Hot-Swappable

You can remove or replace any unit within the stack without disrupting operation or performing stack-level reconfiguration. You can therefore adapt the P330 to your requirements on the fly and with a down-time which is second to none.

When you remove an expansion module from the stack, all configuration definitions on expansion modules are lost.

If you wish to save configuration definitions perform the following procedure:

1Power down the switch.

2Remove the expansion module.

3Insert the new module.

4Power up the switch.

Radius Security

The Remote Authentication Dial-In User Service (RADIUS) is an IETF standard (RFC 2138) client/server security protocol. Security and login information is stored in a central location known as the RADIUS server. RADIUS clients such as the P332G-ML, communicate with the RADIUS server to authenticate users.

All transactions between the RADIUS client and server are authenticated through the use of a “shared secret” which is not sent over the network. The shared secret is an authentication password configured on both the RADIUS client and its RADIUS servers. The shared secret is stored as clear text in the client’s file on the RADIUS server, and in the non-volatile memory of the P332G-ML. In addition, user passwords are sent between the client and server are encrypted for increased security.

4 P332G-ML User’s Guide