Alcatel-Lucent 6850-48 Reference Guide

Network Time Protocol Commands

page 5-2

OmniSwitch CLI Reference Guide

Specifies an NTP server from which the switch will receive updates.

ntp server {ip_address} [key keyid] [minpoll poll] [version version] [prefer]

no ntp server {ip_address}

The IP address of the NTP server to be added or deleted to the client’s 
server list. 

The key identification number that corresponds to the specified NTP 
server. The value ranges from 1 to 65534.

It specifies the minimum polling interval for NTP message. This number 
is determined by raising 2 to the power of the number entered. There-
fore, if 4 were entered, the minimum poll time would be 16 seconds (2

4

 

= 16).The maximum poll interval is fixed at 10 (1,024 s). The minimum 
poll interval defaults to 6 (64 s), but can be decreased by the minpoll 
option to a lower limit of 4 (16 s), or increase to the maximum limit of 
10.

The version of NTP being used. This will be 1, 2, 3, or 4.

Marks this server as the preferred server. A preferred server’s times-
tamp will be used before another server.

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• Use the no form of this command to clear an NTP server from the list of configured servers.

• To configure NTP in the client mode you must first define the NTP servers. Up to 3 NTP servers may 

be defined. 

• Either an IP address or domain name for the specified server can be entered.

• The NTP key identification is an integer. It corresponds to an MD5 authentication key contained in an 

authentication file (.txt) located on the server. This file must be on both the server and the local switch, 
and match, for authentication to work. Enter the key identification using the key keyword if the server 
is set to MD5 authentication.

4

6

not preferred