Juniper JUNOSE 11.2.X MULTICAST ROUTING, Configuration Manual

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CHAPTER 4
Configuring Channelized OCx/STMx
Interfaces
Use the procedures described in this chapter to configure channelized OC3/STM1 and
OC12/STM4 (cOCx/STMx) interfaces on E Series Broadband Services Routers.
This chapter contains the following sections:
•
Overview on page 105
• Platform Considerations on page 107
• References on page 113
•
Before You Configure an Interface on page 114
•
Configuration Tasks on page 115
• Configuration Examples on page 136
• Testing Interfaces on page 139
•
Monitoring Interfaces on page 147
Overview
Channelized OC3/STM1 and OC12/STM4 interfaces are supported by the modules
described in this chapter.
This section describes the features of cOCx/STMx interfaces.
SONET APS and SDH MSP
The router supports Automatic Protection Switching (APS) and Multiplex Section
Protection (MSP) on selected I/O modules that provide SONET/SDH connections. This
feature provides a redundant connection if a primary SONET/SDH connection fails. For
a list of I/O modules that support APS/MSP, see
ERX Module Guide, Appendix A, Module
Protocol Support . For an overview of APS/MSP, see “Bidirectional Switching Mode” on
page 73 in “Configuring Unchannelized OCx/STMx Interfaces” on page 71.
MDL/FDL Support
Interfaces on cOCx/STMx 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
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