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Asynchronous Transfer Mode (ATM) Layer
2-9
ATM is Service Transparent
ATM allows for the high speed transfer of a wide range
of user traffic, including voice, video and other data.
The cell format means that more than one service
(traffic type) can be
multiplexed
over the same
physical line, see Figure 2-4.
Figure 2-4
Service Processing
Cells are
de-multiplexed
at the other end of the
connection and forwarded to the correct service
destination.
Multi-service processing promotes scalability by
significantly reducing the number of changes needed
to add new service traffic types to your network.
ATM is Connection-oriented
ATM is a
connection-oriented
transport service that
requires a communication channel to be set up
between the ATM source and destination end-systems
before ATM cells can pass between them.
Before a direct data connection can be set up
between two end-systems, a number of control
connections are set up. These control connections are
beyond the scope of this guide. If you require further
information about control connections, refer to the
ATM Forum’s “LAN Emulation Over ATM” document.
Figure 2-5 shows the logical structure of a
communication channel.
Figure 2-5
Communication Channels
Several communication channels can operate over the
same physical link. Each
Virtual Path Connection (VPC)
contains several communication channels known as
Virtual Channel Connections (VCCs)
.
The ATM Module only manages Virtual Channel
Connections (VCC).
Summary of Contents for OPTIONS ATM OC-3c
Page 1: ...8271 Nways Ethernet LAN Switch ATM OC 3c Module User s Guide...
Page 6: ......
Page 10: ...4 ABOUT THIS GUIDE...
Page 23: ...Asynchronous Transfer Mode ATM Layer 2 11 Figure 2 7 Switching Cells using VPI and VCI values...
Page 28: ...2 16 CHAPTER 2 NETWORK LAYER CONCEPTS...
Page 31: ...Extending VLANs into the ATM Network 3 3 Figure 3 3 Extending VLANs into the ATM Network...
Page 32: ...3 4 CHAPTER 3 VIRTUAL LAN CONCEPTS...
Page 39: ...Campus Configuration 5 3 Figure 5 2 Campus and Cost Sensitive Network...
Page 50: ...7 2 CHAPTER 7 ACCESSING MANAGEMENT FEATURES Figure 7 1 Screen Map...
Page 80: ...9 14 CHAPTER 9 MONITORING THE ATM MODULE...
Page 87: ...Safety Notices A 7 IEC 950 SELV SELV...
Page 88: ...A 8 APPENDIX A SAFETY INFORMATION...
Page 90: ...B 2 APPENDIX B SCREEN ACCESS RIGHTS...
Page 94: ...C 4 APPENDIX C ATM MODULE TECHNICAL SPECIFICATIONS...
Page 98: ...D 4 APPENDIX D TROUBLESHOOTING Figure D 1 Troubleshooting Flow Diagram...
Page 120: ...E 2 APPENDIX E TECHNICAL SUPPORT AND SERVICE...
Page 136: ...2 BIBLIOGRAPHY...
Page 140: ...4 INDEX...