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CHAPTER 2
Configuring T3 and E3 Interfaces
Overview
MDL Support
Copyright © 2010, Juniper Networks, Inc.
Use the procedures described in this chapter to configure T3 and E3 interfaces on E Series
Broadband Services Routers.
This chapter contains the following sections:
Overview on page 45
Platform Considerations on page 47
References on page 50
Before You Configure an Interface on page 50
Configuration Tasks on page 51
Configuration Examples on page 59
Testing Interfaces on page 60
Monitoring Interfaces on page 63
Unchannelized T3 (DS3) and E3 interfaces are supported by the modules described in
this chapter.
Throughout this chapter, interfaces on modules that provide ATM support are called
T3/E3 ATM interfaces. Similarly, interfaces on modules that provide frame (HDLC)
support are called T3/E3 frame interfaces.
This section describes the features of unchannelized T3/E3 interfaces. For information
about configuring unchannelized T3 (DS3) interfaces over SONET/SDH, see "Configuring
Channelized OCx/STMx Interfaces" on page 105.
T3 interfaces on some line modules support maintenance data link (MDL) messages.
For a list of the line modules that support MDL, see ERX Module Guide, Appendix A, Module
Protocol Support.
You can use MDL messages to determine the status of a link and to display statistics for
the remote end of a connection. MDL messages do not interfere with other data
transmitted over the link.
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