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# Subscriber Interfaces Platform Considerations

For information about modules that support subscriber interfaces on the ERX7xx models, ERX14xx models, and the ERX310 Broadband Services Router:

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

For information about modules that support subscriber interfaces on the E120 and E320 Broadband Services 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 subscriber interfaces.

## Interface Specifiers

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

For ERX7xx models, ERX14xx models, and ERX310 routers, use the slot/port format. For example, the following command specifies a Gigabit Ethernet interface on slot 0, port 1 of an ERX7xx model, ERX14xx model, or ERX310 Broadband Services Router.

`

host1(config)#interface gigabitEthernet 0/1

`

For E120 and E320 Routers, use the slot/adapter/port 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 a Gigabit Ethernet interface on slot 5, adapter 0, port 0 of an E320 router.

`

host1(config)#interface gigabitEthernet 5/0/0

`

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

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