1-4 CHAPTER 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
Figure1-5).
QRelieves traffic bottlenecks for workgroup servers and server farms
(see Figure1-6).
Ethernet-switching
Features
The 7600 Card, which implements Fast Ethernet standards 802.3u and
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
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