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Appendix A
VISM and VISM-PR Card Clocking Options
Revertive and nonrevertive clocking depends upon the processor module back card used and the clocking
source specified. See
network configuration.
Table A-1
Processor Module
Back Card
PXM-UI
PXM-UI-S3
To make a nonrevertive clock source usable after it has failed, you must use the cnfclksrc command to
change that particular clock source, and then use the cnfclksrc command again to configure it back.
Refer to
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
Table A-1
to determine if your clocking is revertive or nonrevertive in your
Revertive/Nonrevertive Clocking and PXM Back Card Support
Using External Clock
For loss of service: revertive
For bad frequency/drift: nonrevertive
For loss of service: revertive
For bad frequency/drift: nonrevertive
Chapter 5, "CLI Commands,"
Using Inband/Service Module Clock
For loss of service: revertive
For bad frequency/drift: nonrevertive
For loss of service: revertive
For bad frequency/drift: nonrevertive
for more information on CLI commands.
Cisco VISM Installation and Configuration Guide
Revertive and Nonrevertive Clocking
A-5
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