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CHAPTER 1
Configuring Channelized T3 Interfaces
Overview
MDL/FDL Support
Copyright © 2010, Juniper Networks, Inc.
Use the procedures described in this chapter to configure channelized T3 (CT3) interfaces
on E Series Broadband Services Routers.
This chapter contains the following sections:
Overview on page 3
Platform Considerations on page 5
References on page 9
Before You Configure an Interface on page 9
Configuration Tasks on page 10
Configuration Example on page 22
Testing Interfaces on page 22
Monitoring Interfaces on page 27
Channelized T3 interfaces are supported by the modules described in this chapter.
Configuration procedures for all channelized T3 physical interfaces are identical; however,
the capabilities of the modules differ. Each port on a CT3 module offers a total
bidirectional rate of 43.008 Mbps.
This section describes the features of channelized T3 interfaces. For information about
configuring channelized T3 interfaces over SONET/SDH, see "Configuring Channelized
OCx/STMx Interfaces" on page 105.
Channelized T3 interfaces on some line modules support maintenance data link (MDL)
messages at the T3 level and facilities data link (FDL) messages at the T1 level. For a list
of the line modules that support MDL and FDL, see ERX Module Guide, Appendix A, Module
Protocol Support.
You can use MDL and FDL messages to determine the status of a link and to display
statistics for the remote end of a connection. MDL and FDL messages do not interfere
with other data transmitted over the link.
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