Specifications

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Cisco MGX 8260 Command Line Interface Guide
Release 1.2, Part Number 78-10987-01 Rev. B0, January, 2002
Chapter 4 Service Management
Configuration Tasks for Lines
Configuring OC-3 Lines
The OC-3 SCC and back card supports four OC-3 lines. This section explains how to configure and
manage these lines.
Multi-chassis Considerations
In a multi-chassis application, each MGX8260 needs a common reference clock for all TDM lines. You
can accomplish this by synchronizing the clocks of each chassis to the common ATM switch clock (See
Figure 4-2).
Figure 4-2 Multi-chassis Timing
To synchronize clocks, follow these steps:
Step 1 Set the primary clock source for each chassis to an OC-3 line. Use the chpcklsrc command for this
purpose.
Step 2 Set the clock source for DS3 and DS1 lines to local using the chds3ln or chds1ln commands. This is
the default configuration for these lines.
Viewing OC-3 Configuration and Status
To view information for a single OC-3 line, enter the lssonetln command, specifying the slot and line
number of the SCC (slot.line).
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