3Com TR manual Fddi Module, Summary of ATM Features

1-10CHAPTER 1: OVERVIEW

to run each of these bandwidth-intensive applications across networks.

The primary benefits of ATM include:

■ATM is a cell-based communications technology that easily scales from T1 or ATM 25 to OC-3 (155 Mbps), OC-12 (622 Mbps), OC-48 (2.488 Gbps), and OC-192 (10 Gbps).

■Additional services are easily added to existing ATM networks.

■ATM networks are designed for growth and pro- vide future scalability.

■ATM provides LAN Emulation (LANE) technology which provides interoperability between existing Token Ring, Ethernet, and ATM devices.

Summary of ATM Features

The following list summarizes the features of the SuperStack II Switch 2000 TR ATM module.

■Conforms to ATM Forum Standards

■Meets OC-3c 155 Mbps interface

■SONET (STS 3c) and SDH (STM-1) compliant

■Multimode Fiber, SC connections

■LAN Emulation (LANE) version 1.0

■16 Emulated LAN Clients

■512 Virtual Circuits

■1024 remote MAC addresses

■User-to-Network Interface (UNI) 3.1

■Interim Local Management Interface (ILMI)

■AAL5 ATM Adaptation Layer

■16 Virtual LANs (VLANs)

■Data buffer to store 40,000 ATM cells

■Wire Rate Transmission on ATM port

■Low Latency (68 microseconds between ATM and Token Ring components).

■3Com SmartAgent support, including:

■SNMP management using 3Com’s Transcend Enterprise Manager.

■Telnet management using VT100 interface.

The FDDI Module

The SuperStack II Switch TR FDDI module provides a high-speed connection between the Switch 2000 TR and FDDI backbone networks. When positioned in workgroup or departmental LANs, the FDDI downlink module offers a 100 MB data path to building, campus or FDDI network backbones directly from the Switch 2000 TR. Perfect for providing cost-effective FDDI access to smaller isolated LANs or bandwidth intensive and mission critical applications. The FDDI downlink also provides a logical migration path for existing Token Ring LANs to mainstream networking technologies.

Redundant links can protect your Switch 2000 TR from network failure or equipment inconsistencies. The built-in Software Upgrade feature allows you to download software revisions easily.