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About This Guide xv
Appendix A, Spanning Tree Concepts, introduces you to the IEEE 802.1D Spanning Tree
Protocol. This protocol is used to resolve the problems of physical loops in a network by
establishing one primary path between any two switches in a network.
Appendix B, System Restart Menu Screen, introduces you to IEEE 802.1Q-compliant virtual
LANs (VLANs). This capability provides a highly efficient architecture for establishing VLANs
within a network and for controlling broadcast/multicast traffic between workgroups.
Appendix C, Class of Service, introduces you to the Class of Service capability, which is based on
the IEEE 802.1p standard specification. This capability allows you to assign mission-critical data
to a higher priority through the switch by delaying less critical traffic during periods of congestion.
Higher priority traffic through the switch is serviced first before lower priority traffic.
Appendix D, IP Multicast Filtering, introduces you to the Internet Group Management Protocol
(IGMP). This protocol runs between hosts and their nearest neighboring multicast router/switch.
The protocol’s mechanisms allow a host to inform its local router that it wants to receive
transmissions addressed to a specific multicast group.
RELATED DOCUMENTS
The following Enterasys Networks document may help to set up, control, and manage the module:
• 5C105 MATRIX E5 Overview and Setup Guide
This document along with other Enterasys Networks documents can be obtained from the World
Wide Web in Adobe Acrobat Portable Document Format (PDF) at the following site:
http://www.enterasys.com
DOCUMENT CONVENTIONS
The guide uses the following conventions:
NOTE: Calls the reader’s attention to any item of information that may be of special
importance.
TIP: Conveys helpful hints concerning procedures or actions.
CAUTION: Contains information essential to avoid damage to the equipment.