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# ntp master

#### Syntax

[ no ] ntp master [ stratumNumber ]

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Specifies the stratum number of a virtual router you configured as an NTP server. By default, if the router is configured as an NTP server, the stratum number is set to the stratum number of the master plus one. The no version restores the default stratum number.

| Note: Although you can specify a stratum number of 1, the router does not support stratum 1 service. The router can synchronize only with an NTP server, and not directly with an atomic clock or a radio clock.

#### Options

- stratumNumber—Number, in the range 1–15, that indicates how many hops the NTP server is from an accurate time source, such as a radio clock or atomic clock. Stratum n servers are n hops from an accurate time source; default value is 8

#### Mode

Global Configuration

#### Published: 2011-01-07

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