Dlp-G96 Set Up Internal Timing - Cisco ONS 15454 DWDM Installation And Operation Manual

DLP-G96 Set Up Internal Timing

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Click Apply.
Step 6
Note
Return to your originating procedure (NTP).
Step 7
DLP-G96 Set Up Internal Timing
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
Internal timing is Stratum 3 and not intended for permanent use. All ONS 15454s should be timed to a
Caution
Stratum 2 or better primary reference source.
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
5-6
NE Reference—Allows you to define three timing references (Ref 1, Ref 2, Ref 3). The node uses
Reference 1 unless a failure occurs to that reference, in which case the node uses Reference 2. If
Reference 2 fails, the node uses Reference 3, which is typically set to Internal Clock. Reference 3
is the Stratum 3 clock provided on the TCC2 card. The options displayed depend on the Timing
Mode setting.
If the Timing Mode is set to External, your options are BITS-1, BITS-2, and Internal Clock.
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If the Timing Mode is set to Line, your options are the node's working OSCM, OSC-CSM, or
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MXP cards and Internal Clock. Choose the cards/ports that are directly or indirectly connected
to the node wired to the BITS source. Set Reference 1 to the card that is closest to the BITS
source. For example, if Slot 5 is connected to the node wired to the BITS source, choose Slot 5
as Reference 1.
If the Timing Mode is set to Mixed, both BITS and OSC or MXP cards are available, allowing
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you to set a mixture of external BITS and OSC or MXP cards as timing references.
BITS-1 Out/BITS-2 Out—Sets the timing references for equipment wired to the BITS Out
backplane (ANSI) or FMEC (ETSI) pins. BITS-1 Out and BITS-2 Out are enabled when BITS-1 and
BITS-2 facilities are put in service. If Timing Mode is set to external, choose the OSC or MXP card
used to set the timing. If Timing Mode is set to Line, you can choose an OSC or MXP card or choose
NE Reference to have the BITS-1 Out and/or BITS-2 Out follow the same timing references as the
NE.
All MXP card client ports are available for timing regardless of the card's termination mode.
Note
MXP trunk ports can be a timing reference when G.709 is set to OFF and the Termination
Mode is set to LINE.
Refer to the Cisco ONS 15454 SONET and DWDM Troubleshooting Guide for timing-related
alarms.
This task sets up internal timing (Stratum 3) for an ONS 15454.
None
DLP-G46 Log into CTC, page 2-25
As needed (use only if a BITS source is not available)
Onsite or remote
Provisioning or higher
Chapter 5 Turn Up Network
November 2004