Spanning Tree Protocol; Broadcast Storms And Storm Thresholds - Avaya AP-3 User Manual

Bridge Configuration Settings

Spanning Tree Protocol

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-3 devices to
control the path of communication within the network, avoiding loops
and following a spanning tree structure.
Note: For more information on Spanning Tree protocol, please see
Section 8.0 of the IEEE 802.1d standard.

Broadcast Storms and Storm Thresholds

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.
4-52 Avaya Wireless AP-3 User's Guide