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Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X - Page 284

Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X
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Use to disable the auto-upgrade feature of the systems timing selector.
The system starts out by setting the operational timing selector to the
administratively configured selector. See the timing select command.
Example
host1(config)#timing disable-auto-upgrade
Use the no version to restore the factory default, which is auto-upgrade enabled.
See timing disable-auto-upgrade.
timing select
Use to specify which of the configured timing sources is used by default.
Primary timing source is preferred over secondary, and secondary is preferred
over tertiary. See the timing source command.
If you enable the auto-upgrade feature, the system does not try to upgrade beyond
the administratively configured selector.
Example
host1(config)#timing select secondary
There is no no version.
See timing select.
timing source
Use to specify how the SRP module exchanges timing signals with an interface.
You can specify primary, secondary, and tertiary timing sources.
You can specify one external source received on an I/O module or IOA other
than the SRP I/O module or SRP IOA.
You can specify two or more internal sources or external sources received through
the SRP I/O module or SRP IOA external timing ports.
On the E120 and E320 routers, you can specify sonet for only two of the available
three timing sources (primary, secondary, or tertiary).
The available sources to choose are:
ds1DS1 interface
ds3DS3 interface
e1E1 interface
e3E3 interface
sonetSONET interface
internalInternal system controller (SC) oscillator
lineExternal timing input on SRP module
254 Configuring Timing
JUNOSe 11.1.x System Basics Configuration Guide

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