Cisco ONS 15454 SDH, Руководство по процедурам

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15-19
Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 15 Maintain the Node
NTP- D265 View the ONS 15454 SDH Timing Report
Table 15-2 ONS 15454 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.
BITS-2 Out The BITS-2 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 TCC2/TCC2P 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, when all references fail
without the 140 seconds of holdover data, or when 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 or BITS-2 Out default to this status until an
STM-N card is defined as its reference on the
Provisioning > Timing tab. This status appears for external
references only.
NE_SYNCH_STATE BITS-1 Out and BITS-2 Out use the same timing source as
the NE. This is displayed when NE Reference is selected
for BITS-1 Out and BITS-2 Out in the 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 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.