Cisco ONS 15310-MA SDH, Procedure Manual, Page: 280 / 632

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Cisco ONS 15310-MA SDH Procedure Guide, Release 9.1 and Release 9.2
78-19416-01
Chapter 14 Maintain the Node
Before You Begin
Table 14-2 ONS 15310-MA SDH Timing Report
Item Description Options Option Descriptions
Clock Indicates the
timing clock.
The report
section that
follows applies
to the timing
clock indicated. NE The node timing clock.
BITS-1 Out The BITS-1 Out timing clock.
Status Indicates the
status of the
timing clock. INIT_STATE The timing reference has not been provisioned. For an NE
reference, this status appears just before the first
provisioning messages when the 15310E-CTX-K9 is
booting. Timing is provisioned to the internal clock of the
node.
HOLDOVER_STATE The clock was locked onto a valid timing reference for
more than 140 seconds when a failure occurred. Holdover
state timing is a computation based on timing during
Normal state combined with the node’s internal clock. The
node holds onto this frequency until the valid reference is
restored. This status appears for NE references only.
FREERUN_STATE The node is running off its internal clock without any
modification except the calibrated value to bring timing to
0 PPM. Free-run state can occur when a Force switch to
the Internal clock is initiated, all references fail without
the 140 seconds of holdover data, or only internal timing
references are defined. This status appears for NE
references only.
NO_SYNC_STATE A synchronization timing reference is not defined.
BITS-1 Out defaults to this status until an STM-M card is
defined as its reference on the Provisioning > Timing tab.
This status appears for external references only.
NE_SYNCH_STATE BITS-1 Out uses the same timing source as the NE. This
appears when NE Reference is selected for BITS-1 Out
Reference List on the Provisioning > Timing tab.
NORMAL_STATE The timing reference is locked onto one of its provisioned
references. The reference cannot be Internal or
No Sync state.
FAST_START_STATE The node has switched references, but the reference is too
far away to reach Normal state within an acceptable
amount of time. Fast Start state is a fast acquisition mode
to allow the node to quickly acquire the reference. After it
achieves this goal, the node progresses to the Normal state.
FAST_START_FAILED_STATE A timing reference is too far away to reach in Normal
state. The Fast Start state could not acquire sufficient
timing information within the allowable amount of time.