Network Router User Manual

SmartSwitch Router User Reference Manual 41
Chapter 5
ATM Configuration
Guide
ATM Overview
This chapter provides an overview of the Asynchronous Transfer Mode (ATM) features
available for the SmartSwitch Router. ATM is a cell switching technology used to establish
multiple connections over a physical link, and configure each of these connections with its
own traffic parameters. This provides more control over specific connections within a
network.
The ATM line card provides an ATM interface, allowing integration of ATM with Ethernet
and other interfaces within a network topology supported by the SmartSwitch Router.
This chapter discusses the following tasks:
• Creating a Virtual Channel
• Creating a Service Class Definition
• Applying a Service Class Definition
• Enabling Cell Scrambling
• Selecting the Cell Mapping Format
• Setting the Bit Allocation for VPI
• Displaying ATM Statistics
Virtual Channels
A virtual channel is a point-to-point connection that exists within a physical connection.
You can create multiple virtual channels within one physical connection, with each virtual