13-20
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
September 2005
Chapter 13 Maintain the Node
NTP-G113 View the ONS 15454 Timing Report
Table 13-2
ONS 15454 Timing Report
Item
Description
Option
Option Description
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 card 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. Freerun 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
OC-N/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
in the BITS-1 Out and BITS-2 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_STAT
E
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.
Summary of Contents for ONS 15454 DWDM
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