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ATM
24
Avidia System Configuration and Management User Manual
ATM Virtual Circuits
ATM virtual circuits are logical connections in the ATM network over which ATM cells
are transmitted between two points. Permanent Virtual Circuits (PVCs), supported by Avidia
systems, comprise a Virtual Path Connection (VPC) and, frequently, multiple Virtual Channel
Connections (VCCs) within the VPC. The VPCs and VCCs are mapped to a predefined static
route that is always in place and is always available.
The Avidia system functions as a VPC or VCC cross-connect switch, utilizing cross-connect
VPCs and VCCs to carry data between defined points within the Avidia chassis, such as
between a channel card and a line card. VPCs and VCCs also carry data from subscriber
modems to Avidia channel cards, and from Avidia line cards to other destinations in the ATM
backbone network.
VPC configuration requires specifying a Virtual Path Identifier (VPI). For VPCs, the system
only translates the VPI value and does not check or change any configured Virtual Channel
Identifier (VCI) value. VCC configuration requires specifying a VPI and a VCI. VPI and VCI
combinations must be unique only on the same user port, as the circuit is remapped to a different
VPI and VCI on the network interface. This enables different subscribers to use the same VPI
and VCI combinations without creating conflict in the network.
The valid VPI and VCI range depends on the type of cards used in the virtual circuit. Use the
following tables to determine valid values.
PVC Configuration
Card
VPI Range
No. of VPIs per
port that can be
mapped to PVCs
VCI Range
Maximum no. of
connections that
can be mapped to
each port
(a)
(a) The system supports a maximum of 8188 total connections.
OC3
0-255
16
32-1023
4094
DS3
0-255
16
32-1023
4094
AMC
0
1
1024-4095
96
DSX-1/T1 user or network
interface (ATM)
0-255
3
32-1023
510
Cell-based ADSL channel
card (ATM)
0-255
4
32-253
40
Frame-based SDSL
0
1
1024-4095
3072
Cell-based SDSL (ATM)
0-127
4
32-127
40
Frame-based IDSL
0
1
1024-4095
3072
Содержание AVIDIA SWD4573I1
Страница 1: ...Avidia Catalog Number SWD4573I1 SYSTEM CONFIGURATION AND MANAGEMENT USER MANUAL SWITCHWARE VERSION 2 0...
Страница 6: ...Summary of Changes for Version 2 0 vi Avidia System Configuration and Management User Manual...
Страница 26: ...Table of Contents xxvi Avidia System Configuration and Management User Manual...
Страница 28: ...2 Avidia System Configuration and Management User Manual...
Страница 36: ...Management Tools and Protocols 10 Avidia System Configuration and Management User Manual...
Страница 44: ...Next Steps 18 Avidia System Configuration and Management User Manual...
Страница 102: ...Saving Configurations 76 Avidia System Configuration and Management User Manual...
Страница 104: ...78 Avidia System Configuration and Management User Manual...
Страница 110: ...Logging Off the Command Line Interface 84 Avidia System Configuration and Management User Manual...
Страница 166: ...Configuring xDSL Subscriber Names 140 Avidia System Configuration and Management User Manual...
Страница 230: ...Configuring ATM Policing 204 Avidia System Configuration and Management User Manual...
Страница 278: ...Configuring Global IP Routing Settings 252 Avidia System Configuration and Management User Manual...
Страница 302: ...Monitoring IDSL Current Performance 276 Avidia System Configuration and Management User Manual...
Страница 340: ...Monitoring Bridge Forwarding Statistics 314 Avidia System Configuration and Management User Manual...
Страница 396: ...370 Avidia System Configuration and Management User Manual...
Страница 405: ...Chapter 19 Configuring System Parameters Avidia System Configuration and Management User Manual 379...
Страница 438: ...Configuring IDSL Service 412 Avidia System Configuration and Management User Manual...
Страница 440: ...Configuring IDSL Service 414 Avidia System Configuration and Management User Manual...
Страница 445: ...Chapter 21 Configuring Network Services Avidia System Configuration and Management User Manual 419...
Страница 449: ...Chapter 21 Configuring Network Services Avidia System Configuration and Management User Manual 423...
Страница 452: ...Configuring DS3 Service 426 Avidia System Configuration and Management User Manual...
Страница 492: ...Configuring ATM Policing 466 Avidia System Configuration and Management User Manual...
Страница 510: ...Deleting a Frame Relay Configuration 484 Avidia System Configuration and Management User Manual...
Страница 530: ...Configuring Global IP Routing Settings 504 Avidia System Configuration and Management User Manual...
Страница 533: ...Chapter 25 Monitoring Subscriber Connections Avidia System Configuration and Management User Manual 507...
Страница 539: ...Chapter 25 Monitoring Subscriber Connections Avidia System Configuration and Management User Manual 513...
Страница 566: ...Physical SDSL Cell Interfaces 540 Avidia System Configuration and Management User Manual PHYSICAL SDSL CELL INTERFACES...
Страница 568: ...Physical DS3 Interfaces 542 Avidia System Configuration and Management User Manual PHYSICAL DS3 INTERFACES...
Страница 582: ...Monitoring IDSL Alarm Status 556 Avidia System Configuration and Management User Manual...
Страница 595: ...Chapter 29 System Maintenance and Administration Avidia System Configuration and Management User Manual 569...
Страница 618: ...Activating and Deactivating Ports 592 Avidia System Configuration and Management User Manual...
Страница 620: ...594 Avidia System Configuration and Management User Manual...
Страница 628: ...Setting the System Date and Time 602 Avidia System Configuration and Management User Manual...
Страница 636: ...610 Avidia System Configuration and Management User Manual...
Страница 642: ...Glossary 616 Avidia System Configuration and Management User Manual...
Страница 657: ......