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Introduction B-1

Appendix B

IR-ETH/QV Interface Module

B.1 Introduction

The IR-ETH/QV interface module replaces the IR-ETH/QN interface module.

The IR-ETH/QV has improved functionality including two new priority queues.

IR-ETH/QV includes a high-performance self-learning Fast Ethernet bridge. It

connects to the LAN through a single 10BaseT or 100BaseT port, and operates in

full- or half-duplex to provide a simple and cost-effective interconnection between

10/100BaseT LANs. The IR-ETH/QV interface module also supports IEEE 802.1p

and IEEE 802.1q frames to enable VLAN applications.

The module automatically learns MAC addresses of the local LAN. Its LAN table

stores up to 2,048 addresses with 5-minute automatic aging. Filtering and

forwarding is performed at wire speed.

Figure B-1 shows a typical application using FOM-40 with IR-ETH/QV module.

FOM-40

10/100BaseT LAN

G. 7 0 3

Network

Figure B-1. Typical Application of FOM-40 with IR-ETH/QV Module

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RAD Data comm FOM-40 Spécifications Page 57