Specifications

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Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 3 Provisioning PXM1E Communication Links
General PXM1E Configuration Procedures
Configuring SONET Lines
At the physical level, you can configure the line clock source for SONET lines. The following procedure
describes how to configure SONET lines.
Step 1 Establish a configuration session using a user name with GROUP1 privileges or higher.
Step 2 If you do not know the line number you want to configure, enter the dsplns command to display a list
of the lines:
mgx8830b.2.PXM.a > dsplns
Remember that you cannot configure a line until you have brought it up as described in the previous
section, “Bringing Up Lines.”
Step 3 To display the configuration for a line, enter the dspln command. For example:
mgx8830b.2.PXM.a > dspln -sonet 2.1
Line Number : 2.1
Admin Status : Up Alarm Status : Clear
Loopback : NoLoop APS enabled : Enable
Frame Scrambling : Enable Number of ports : 1
Xmt Clock source : localTiming Number of partitions: 1
Line Type : sonetSts3c Number of SPVC : 0
Medium Type(SONET/SDH) : SONET Number of SPVP : 0
Medium Time Elapsed : 623 Number of SVC : 0
Medium Valid Intervals : 72
Medium Line Type : ShortSMF
For more information, see the “Verifying Line Configuration” section later in this chapter.
Step 4 To configure a SONET line, enter the following commands:
mgx8830b.2.PXM.a > cnfln -sonet <bay.line> -slt <LineType> -clk <clockSource>
Table 3-2 describes the parameters for configuring lines. Be sure to use only the parameters listed for
SONET lines.
Step 5 To verify your configuration changes, enter the dspln command.
Configuring T3 Lines
At the physical communications level, you can configure the following options for DS3 lines:
• Line type
• Line length (distance in meters)
• C-bit checking
• Line clock source
• Out of frame alarm criteria
• RcvFEACValidation