2-12
C
HAPTER
2: N
ETWORK
L
AYER
C
ONCEPTS
Switched Virtual Circuits (SVCs)
SVCs use the signalling protocol to dynamically define
connections as they are needed and to release them
when they are no longer needed.
SVCs use signalling for:
■
Connections initiated by the user/application.
■
Connections established and dropped dynamically.
■
Varied connection time.
■
Connections not automatically re-established after
network failure.
Permanent Virtual Circuits (PVCs)
The most basic connection setup requires the
definition of each connection via management. These
type of connections generally remain established for
long periods of time.
PVC attributes include:
■
Connections initiated by network management.
■
Long-term connection duration.
■
Automatically re-established after network failure.
■
Supported by MIB or other management entity.
The ATM Module does not support PVCs.
ATM Interfaces
ATM technology is implemented in ATM edge-devices
and ATM Switches.
ATM provides a
User-to-Network Interface
(UNI).
The
User-to-Network Interface (UNI) is used to connect an
ATM edge device to an ATM switch that is managed
as part of the same network.
ATM also provides a
Network-to-Network Interface (NNI)
that is typically used to interconnect two ATM switches
managed as part of the same network.
The ATM Interfaces are shown in Figure 2-8.
Figure 2-8
ATM Interfaces
The User-to-Network Interface (UNI) is managed by the
Interim Local Management Interface (ILMI)
protocol.
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...