System Management
7450 ESS OS Basic System Configuration Guide Page 375
st3 — SONET Stratum 3 Traceable
eec1 — Ethernet Equipment Clock Option 1 Traceable (sdh)
eec2 — Ethernet Equipment Clock Option 2 Traceable (sonet)
prc — SDH Primary Reference Clock Traceable
ssu-a — SDH Primary Level Synchronization Supply Unit Traceable
ssu-b — SDH Second Level Synchronization Supply Unit Traceable
sec — SDH Synchronous Equipment Clock Traceable
ql-selection
Syntax [no] ql-selection
Context config>system>sync-if-timing
Description When enabled the selection of system timing reference and BITS output timing reference takes into account
quality level. This command turns -on or turns-off SSM encoding as a means of timing reference selection.
Default no ql-selection
ptp
Syntax ptp
Context config>system>sync-if-timing
Description This command enables the context to configure parameters for system timing via IEEE 1588-2008,
Precision Time Protocol.
This command is only available on the systems supporting the 1588-2008 frequency recovery engine.
ref-order
Syntax ref-order first second [third [fourth]]
no ref-order
Context config>system>sync-if-timing
Description The synchronous equipment timing subsystem can lock to different timing reference inputs, those specified
in the ref1, ref2, bits and ptp command configuration. This command organizes the priority order of the
timing references.
If a reference source is disabled, then the clock from the next reference source as defined by ref-order is
used. If all reference sources are disabled, then clocking is derived from a local oscillator.
To Next Page
Loading...
