Layer 2 Services over MPLS Platform Considerations

To configure layer 2 services over MPLS, you must first configure the underlying layer 2 service (ATM, bridged Ethernet, Fast Ethernet, Gigabit Ethernet, 10-Gigabit Ethernet, Frame Relay, or HDLC) and MPLS.

Module Requirements

For information about the modules that support the underlying layer 2 service and MPLS on ERX-14xx models, ERX-7xx models, and the ERX-310 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 the underlying layer 2 service and MPLS.

For information about the modules that support the underlying layer 2 service and MPLS on the E120 router or the E320 router:

• 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 the underlying layer 2 service and MPLS.

  Note: In the current release, the E120 and E320 routers supports all layer 2 services over MPLS shown in the bulleted list in Layer 2 Services over MPLS Overview except ATM with AAL5 encapsulation, ATM with VCC cell relay encapsulation, Frame Relay, and HDLC.

Interface Specifiers

Many of the configuration task examples in this chapter use the slot/port[.subinterface ] format to specify the physical interface for the underlying layer 2 service. However, the interface specifier format that you use depends on the router that you are using.

For ERX-7xx models, ERX-14xx models, and ERX-310 routers, use the slot/port[.subinterface ] format. For example, the following command specifies ATM 1483 subinterface 10 on slot 0, port 1 of an ERX-7xx model, ERX-14xx model, or ERX-310 router.

For the E120 router and the E320 router, 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 E320 router.

Related Topics

• For more information about supported interface types and specifiers on E-series routers, see Interface Types and Specifiers in the JUNOSe Command Reference Guide

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