Specifications

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