Specifications

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Cisco ONS 15454 Installation and Operations Guide, R3.2
March 2002
Chapter 3 Node Setup
Setting Up ONS 15454 Timing
Figure 3-9 Setting Up ONS 15454 timing
Step 5
Click Apply.
Note Refer to the Cisco ONS 15454 Troubleshooting and Maintenance Guide for timing-related
alarms.
Procedure: Set Up Internal Timing
If no BITS source is available, you can set up internal timing by timing all nodes in the ring from the
internal clock of one node.
Caution Internal timing is Stratum 3 and not intended for permanent use. All ONS 15454s should be timed to
a Stratum 2 or better primary reference source.
Step 1 Log into the node that will serve as the timing source.
Step 2 In the CTC node view, click the Provisioning > Timing tabs.
Step 3 In the General Timing section, enter the following:
• Timing Mode—Set to External.