Avaya AP-5, AP-4, AP-6 manual Spanning Tree, Storm Threshold

Bridge

Spanning Tree

A Spanning Tree is used to avoid redundant communication loops in networks with multiple bridging devices. Bridges do not have any inherent mechanism to avoid loops, because having redundant systems is a necessity in certain networks. However, redundant systems can cause Broadcast Storms, multiple frame copies, and MAC address table instability problems.

Complex network structures can create multiple loops within a network. The Spanning Tree configuration blocks certain ports on AP devices to control the path of communication within the network, avoiding loops and following a spanning tree structure.

For more information on Spanning Tree protocol, please see Section 8.0 of the IEEE 802.1d standard. The Spanning Tree configuration options are advanced settings. Avaya recommends that you leave these parameters at their default values unless you are familiar with the Spanning Tree protocol.

Storm Threshold

Storm Threshold is an advanced Bridge setup option that you can use to protect the network against data overload by:

•Specifying a maximum number of frames per second as received from a single network device (identified by its MAC address).

•Specifying an absolute maximum number of messages per port.

4-114 Avaya Wireless AP-4/5/6 User’s Guide