Supported Features

This section describes ATM feature support on E Series modules.

For more information about the physical layer characteristics of the modules described in this section, including the numbering schemes, see the JunosE Physical Layer Configuration Guide.

Module Capabilities

The level of support for certain ATM capabilities varies depending on the module. Table 5 lists the specific differences in the capabilities of the modules.

The number of VP tunnels varies with the number of ports in the associated line module. For information about the maximum number of ATM VP tunnels supported per port for all line modules, see JunosE Release Notes, Appendix A, System Maximums.

Note: Support for the OC3 (dual port) line module has been deprecated.

Table 5: ATM Capabilities on Line Modules and I/O Modules

Line Module

I/O Module or IOA

Number of VP Tunnels

VPI/VCI Address Range

Configurable Bit Range

Number of VCs on Each Port

ATM Circuit Traffic Management Types

VP Tunnel Traffic Management Types

OCx/STMx ATM

OC3-4 I/O

4xDS3 ATM I/O

1024

Configurable

20

8000 active

16,000 configured

CBR, UBR, UBR with PCR, VBR-NRT, VBR-RT

CBR, VBR-NRT

OCx/STMx ATM

OC12/STM4 I/O

256

Configurable

20

8000 active

16,000 configured

CBR, UBR, UBR with PCR, VBR-NRT, VBR-RT

CBR, VBR-NRT

OC3/STM1 GE/FE

OC3-2 GE APS I/O

1024

Configurable

20

8000 active

16,000 configured

CBR, UBR, UBR with PCR, VBR-NRT, VBR-RT

CBR, VBR-NRT

ES2 4G LM

ES2-S1 OC3-8 STM1 ATM IOA

1 IOA per slot: 2048

2 IOAs per slot: 4096

Fixed

VPI: 0–255

VCI: 0–65535

8000 active

16,000 configured

CBR, UBR, UBR with PCR, VBR-NRT, VBR-RT

CBR, VBR-NRT

ES2 4G LM

ES2-S1 OC12-2 STM4 ATM IOA

1 IOA per slot: 512

2 IOAs per slot: 1024

Fixed

VPI: 0–255

VCI: 0–65535

8000 active

16,000 configured

CBR, UBR, UBR with PCR, VBR-NRT, VBR-RT

CBR, VBR-NRT

Virtual Channel Support

The number of virtual channels (VCs) that the router supports on each port varies depending on the E Series router and module you are using. For information about the maximum number of ATM VCs supported per chassis, per module, and per port, see JunosE Release Notes, Appendix A, System Maximums.