3Com manual 4CHAPTER 1 Overview of the 7600 Card

1-4CHAPTER 1: OVERVIEW OF THE 7600 CARD

switch and is similar in functionality to the 7200 Ethernet/ATM Interface Card.

7600 Card Benefits Fast Ethernet switching works with Virtual LANs and management to ensure that information flow does not cross Virtual LAN boundaries. The

7600 Card provides the following benefits:

QBoosts performance for individual workstations where bandwidth demands are high.

QEstablishes Virtual LANs across the enterprise.

QEnables Fast Ethernet backbones to downlink from the Super-Stack II Switch 1000 on the desktop to the Fast Ethernet in the basement (see Figure 1-5).

QRelieves traffic bottlenecks for workgroup servers and server farms (see Figure 1-6).

Ethernet-switchingThe 7600 Card, which implements Fast Ethernet standards 802.3u and Features Bridging standard 802.1d, includes the following key features:

QAuto-sensing full duplex/half duplex, supported by the TX interface

QAuto-sensing 10/100 Mbps, supported by the TX interface

QRate-based flow control

QFull rate multicast support

QAddress table capacity of up to 32k entries

QFull rate forward/filter

QIEEE 802.1d Spanning Tree Protocol (STP) support

QVirtual LAN support

QLAN Emulation Client (LEC) support

QLocal management via the CELLplex 7000’s RS-232 port

QCongestion management

QMIBs supported: MIB2, Bridge MIB, AToM MIB, LEC MIB, RMON MIB, Interface Evolution MIB, NCDCHASS MIB (private)

Virtual LANs Virtual LANs are Ethernet segments grouped together to form a common broadcast domain across the enterprise. Using the 7600 Card, you can establish Virtual LANs using ATM and LAN Emulation. Segments in a