Chapter 3

Operation

The 9A656-04 provides switching between the front panel interfaces (ANIMs) and the Cell Transfer Matrix backplane located inside the SmartSwitch 9500 chassis. Figure 3-1 shows the trafÞc ßow of ATM cells in the 9A656-04. The following sections brießy describe the functions of the i960 Processor, the ASICs, the CTM and how they relate to ATM cell trafÞc ßow.

 

Translates headers and provides

Separates/assembles

routing information to move ATM

cell header data

cells out of the TDM

Phycsical Connection to Network

ATM CELLS

UTOPIA ASICs

CELL HEADER INFORMATION

TDM

ASIC

ATM CELLS

Queue

ASICs

Provides translation between the I/O ATM bidirectional data and the TDM

ROUTING INFORMATION

DATA

TDM Bus

BACKPLANE INTERFACES

Shared DRAM

SAR

 

To SMB-1 & 10

CPU

i960 To Z-80 Processor

Provides management and configuration interface for the 9A656-04

CPU Interface

SARI

DATA

ASIC

 

Segments and reassembles data into ATM cells

DATA

CTM

ASICs

DATA

CTM

Figure 3-1. 9A656-04 Block Diagram

3-1

Page 23
Image 23
Cabletron Systems 9A656-04 ATM Module manual Operation

9A656-04 ATM Module specifications

The Cabletron Systems 9A656-04 ATM Module is a high-performance network device designed specifically for Asynchronous Transfer Mode (ATM) networking. This module is a part of Cabletron's extensive range of network equipment, which is known for its reliability and advanced technology, making it suitable for both enterprise and service provider environments.

One of the main features of the 9A656-04 module is its ability to support high-speed data transfer rates, accommodating the increasing bandwidth demands of modern networks. Operating at speeds of up to 155 Mbps, this module is ideal for applications that require rapid and efficient data exchange, such as multimedia streaming, video conferencing, and large file transfers.

The 9A656-04 employs a Cell-Switching architecture inherent to ATM technology. This architecture enables the module to efficiently handle multiple types of data traffic. The fixed-size cells used in ATM networking ensure low latency and predictable response times, which are essential for time-sensitive applications. By having dedicated bandwidth for voice, video, and data, the module provides a seamless networking experience.

Another key characteristic of the 9A656-04 is its scalability. Organizations can easily upgrade or expand their networks without experiencing significant downtime or requiring extensive reconfiguration. This modularity allows businesses to accommodate future growth and changing demands efficiently.

In terms of technologies, the Cabletron 9A656-04 module also supports a range of networking protocols, ensuring compatibility with existing infrastructure. This flexibility enables integration with various systems, making it a versatile solution in mixed networking environments.

The module is equipped with multiple interfaces, allowing for connection to various ATM devices and networks. This multiprotocol capability is a significant advantage as it enables organizations to utilize their existing networks while transitioning to ATM technology.

Furthermore, the 9A656-04 is built with advanced quality-of-service (QoS) features, ensuring that critical applications receive the necessary bandwidth and service level priority. This capability is vital in environments where different types of traffic intersect, allowing for optimal performance and user experience.

In conclusion, the Cabletron Systems 9A656-04 ATM Module is a robust and feature-rich solution for organizations looking to leverage the advantages of ATM technology. With its high-speed performance, scalable design, versatile protocol support, and reliable quality-of-service features, it addresses a range of networking needs, ensuring that businesses can operate efficiently in an increasingly digital world.