■ 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” on
page 509 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 ERX7xx models, ERX14xx models, and ERX310 routers, 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 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.
host1(config)#interface atm 5/0/0.20
Related Topics ■ For more information about supported interface types and specifiers on E Series
routers, seeInterface Types and Specifiers in the JUNOSe Command Reference
Guide
Layer 2 Services over MPLS References
For information about layer 2 services, consult the following resources:
■ Encapsulation Methods for Transport of ATM Over MPLS
Networks—draft-ietf-pwe3-atm-encap-07.txt (April 2005 expiration)
■ Encapsulation Methods for Transport of Ethernet Frames Over IP/MPLS
Networks—draft-ietf-pwe3-ethernet-encap-05.txt (June 2004 expiration)
■ Encapsulation Methods for Transport of Layer 2 Frames Over IP and MPLS
Networks—draft-martini-l2circuit-encap-mpls-08.txt (March 2005 expiration)
Layer 2 Services over MPLS References ■ 511
Chapter 6: Layer 2 Services over MPLS Overview
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