7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
ql-selection
Syntax
[no] ql-selection
Context
config>system>sync-if-timing
Platforms
Supported on all 7210 SAS platforms as described in this document, including platforms configured in the
access-uplink operating mode; not supported on 7210 SAS platforms configured in the standalone-VC
operating mode
Description
This command specifies that the selection of system timing reference and BITS output timing reference
(if available on the platform) 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
ref-order
Syntax
ref-order first second third [fourth] [fifth]
ref-order ptp
no ref-order
Context
config>system>sync-if-timing
Platforms
Supported on all 7210 SAS platforms as described in this document, including platforms configured in the
access-uplink operating mode; not supported on 7210 SAS platforms configured in the standalone-VC
operating mode
Description
This command organizes the priority order of the timing references. The synchronous equipment timing
subsystem can lock to different timing reference inputs, those specified in the ref1, ref2 and ptp command
configuration.
If a reference source is disabled, 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.
3HE 18197 AAAB TQZZA
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