Alcatel-Lucent 7210 SAS M Configuration Manual page 387

ref-order
Syntax ref-order first second [third]
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.
NOTE: On 7210 SAS-M and 7210 SAS-X, if PTP is specified as reference, then the other reference
cannot be specified as syncE. In other words use of PTP and syncE as a reference is mutually
exclusive. On 7210 SAS-T, 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 simultaneously.
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.
ptp — Specifies that PTP must be used as a timing reference.
ref1
Syntax ref1
Context config>system>sync-if-timing
Description
This command enables the context to configure parameters for the first timing reference.
7210 SAS M, T, X, R6 Basic System Configuration Guide
Values
ref1, ref2, ptp
Values ref1, ref2, ptp
Values
ref1, ref2, ptp
Values ref1, ref2, ptp
System Management
Page 387