Juniper ACX1000 Configuration Manual page 287

Setting the clock mode
Setting the quality mode
Setting the selection mode
Copyright © 2017, Juniper Networks, Inc.
on the ACX router, the Synchronous Ethernet equipment is optimized for 1544
option-2
Kbps, the speed of a T1 interface. To set the clock type, use the following command:
set chassis synchronization network-option (option-1 | option-2)
For option-1 , QL must be configured for external clocks (
is enabled. For , the default QL for external clocks is QL_STU whether or not QL
option-2
is enabled.
The following output shows an example of the configuration of the
:
option-1
[edit]
user@host# show chassis
synchronization {
network-option option-1;
}
Clock mode sets the selection of the clock source from a free-running local oscillator or
from an external qualified clock. The default clock mode is
best clock source. To set the clock mode, use the following command:
set chassis synchronization clock-mode (free-run | auto-select)
The following output shows an example of the configuration of the
[edit]
user@host# show chassis
synchronization {
clock-mode free-run;
}
NOTE: Automatic clock selection does not apply to the IEEE 1588v2 recovered
clock.
Specify the expected quality of the incoming clock on this source. The default is disable.
To set the synchronization quality mode, use the following command:
set chassis synchronization quality-mode-enable
The following output shows the configuration of the
[edit]
user@host# show chassis
synchronization {
quality-mode-enable;
}
The selection mode specifies whether the clock source selection algorithm should use
the configured or received ESMC SSM quality level for clock selection. In both selection
Chapter 9: Configuring Timing and Synchronization
gps or bits ) whether or not QL
network type
, which uses the
auto-select
free-run
quality-mode-enable
with
option:
statement:
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