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This soft copy for use by IBM employees only.
Chapter 2. Introduction to the IBM 8285 Nways ATM Workgroup
Switch
The IBM 8285 Nways ATM Workgroup Switch (hereafter called the 8285 switch) is
an ATM switch for the workgroup environment that provides a low-cost ATM
solution as either a stand-alone switch or as an access node to the rest of the
enterprise. Using your existing wiring it provides up to 25 Mbps of bandwidth to
users. The 8285 switch can connect users to any ATM network at speeds up to
155 Mbps, and even has forum-compliant LAN emulation built-in to make
implementation easier.
In addition, the IBM 8285 Nways ATM Workgroup Switch is expandable, using the
optional 8285 expansion chassis which enables it to take advantage of most of
the many ATM modules available for the IBM 8260 Nways Multiprotocol
Switching Hub. This provides you with ability to:
•
Create even larger workgroups
•
Service more high-speed devices (such as servers)
•
Provide more bandwidth in to your ATM backbone network
•
Connect existing token-ring or Ethernet users directly to the ATM backbone
•
Connect to remote sites using public ATM services at speeds from 34 Mbps
up to 155 Mbps
•
Distribute video information across your ATM network and make it
accessible using standard TV monitors
The following sections provide an overview of the 8285 switch.
2.1 8285 Components
The 8285 switch is comprised of the following components:
•
Standard:
− Base Unit:
- 12 ATM 25.6 Mbps ports
- I/O slot for optional uplink (see below)
•
Optional:
− 155 Mbps ATM I/O Card which can be installed in the IBM 8285 Base
Unit:
- Multi-mode Fiber (MMF)
- Single-mode Fiber (SMF)
− Expansion Unit
− Installable 8285/8260 ATM Modules
Copyright IBM Corp. 1996 9