Alcatel-Lucent 7210 SAS M Configuration Manual page 410

System Synchronization Commands
ref-order
Syntax ref-order first second [third] [fourth] [fifth]
ref-order ptp
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 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.
Note that if a sync-if-timing reference is linked to a source port that is operationally down, the port is
no longer qualified as a valid reference. Depending on the platform used, either SFP or Fixed copper
ports can be used as a reference.
NOTES:
The no form of the command resets the reference order to the default values.
Default ref1 ref2 ptp
Parameters
first — Specifies the first timing reference to use in the reference order sequence.
second — Specifies the second timing reference to use in the reference order sequence.
third — Specifies the third timing reference to use in the reference order sequence. This parameter is
fourth — Specifies the fourth timing reference to use in the reference order sequence. This parameter
fifth — Specifies the fifth timing reference to use in the reference order sequence. This parameter is
ptp — Specifies that PTP must be used as a timing reference.
Page 410
Guide
• On 7210 SAS-M and 7210 SAS-X, if PTP is specified as reference, then the other reference can-
not be specified as syncE. In other words use of PTP and syncE as a reference is mutually exclu-
sive.
• On 7210 SAS-T and 7210 SAS- R6, all three timing reference can be enabled at the same time.
In other words, on 7210 SAS-T, it is allowed to specify the syncE and PTP references simultane-
ously.
• The 7210 SAS-M and 7210 SAS-X does not support third, fourth, and fifth parameter.
Values ref1, ref2, ptp
Values
ref1, ref2, ptp
supported only on 7210 SAS-T and 7210 SAS-R6 devices.
Values ref1, ref2, ptp
is supported only on 7210 SAS-T and 7210 SAS-R6 devices.
Values ref1, ref2, ptp
supported only on 7210 SAS-T devices.
Values
ref1, ref2, ptp
7210 SAS M, T, X, R6 Basic System Configuration