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# Platform Considerations

You can configure ATM interfaces on the following Juniper Networks E Series Broadband Services Routers:

- E120 router
- E320 router
- ERX1440 router
- ERX1410 router
- ERX710 router
- ERX705 router
- ERX310 router

## Module Requirements

For information about the modules that support ATM interfaces on ERX14xx models, ERX7xx models, and the ERX310 router:

- See ERX Module Guide, Table 1, Module Combinations for detailed module specifications.
- See ERX Module Guide, Appendix A, Module Protocol Support for information about the modules that support ATM.

For information about the modules that support ATM interfaces on the E120 and E320 routers:

- See E120 and E320 Module Guide, Table 1, Modules and IOAs for detailed module specifications.
- See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information about the modules that support MLPPP.

## Interface Specifiers

The configuration task examples in this chapter use the slot/port[.subinterface ] format to specify an ATM interface. However, the interface specifier format that you use depends on the router that you are using.

For ERX7xx models, ERX14xx models, and ERX310 router, use the slot/port[.subinterface ] format. For example, the following command specifies ATM 1483 subinterface 10 on slot 0, port 1 of an ERX7xx model, ERX14xx model, or ERX310 router.

`

host1(config)#interface atm 0/1.10

`

For E120 and E320 routers use the slot/adapter/port[.subinterface ] format, which includes an identifier for the bay in which the I/O adapter (IOA) resides. In the software, adapter 0 identifies the right IOA bay (E120 router) and the upper IOA bay (E320 router); adapter 1 identifies the left IOA bay (E120 router) and the lower IOA bay (E320 router). For example, the following command specifies ATM 1483 subinterface 20 on slot 5, adapter 0, port 0 of an E120 or E320 router.

`

host1(config)#interface atm 5/0/0.20

`

For more information about supported interface types and specifiers on E Series routers, see Interface Types and Specifiers in JUNOSe Command Reference Guide.

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