Chapter 17
Time Services
RUGGEDCOM ROX II
CLI User Guide
736
Adding an NTP Server
Section 17.8.3
Adding an NTP Server
To configure an NTP server on the device, do the following:
1. Make sure the CLI is in Configuration mode.
2. [Optional] If the communications with the server are to be authenticated, add a server authentication key or
make sure the required key has been configured. For more information, refer to
.
3. Add the NTP server by typing:
NOTE
RUGGEDCOM ROX II supports both IPv4 and IPv6 addresses.
services
ntp server
IP Address
Where:
•
IP Address
is the address of the remote NTP server
4. Configure the following parameter(s) as required:
Parameter
Description
enabled
Turns on the NTP interface to this server.
peer
Allows you to enter and edit peers. Peers are NTP servers of the same stratum as the
router, and are useful when contact is lost with the hosts in the NTP servers menu.
minpoll { minpoll }
Synopsis:
An 8-bit unsigned integer between 4 and 17
Default:
6
The minimum poll interval for NTP messages, in seconds as a power of two.
maxpoll { maxpoll }
Synopsis:
An 8-bit unsigned integer between 4 and 17
Default:
10
The maximum poll interval for NTP messages, in seconds as a power of two.
iburst
When the server is unreachable and at each poll interval, a burst of eight packets is sent
instead of one.
ntp-version { ntp-version }
Synopsis:
A 32-bit signed integer between 1 and 4
The version of the NTP protocol used to communicate with this host. Change this only if
it is known that the host requires a version other than 4.
prefer
Marks this server as preferred.
key { key }
Synopsis:
A string
An authentication key associated with this host.
5. [Optional] Set restrictions to control which NTP services can be accessed on the server. For more information,
Section 17.8.6.2, “Adding a Server Restriction”
6. Type
commit
and press
Enter
to save the changes, or type
revert
and press
Enter
to abort.
Summary of Contents for RUGGEDCOM ROX II
Page 2: ...RUGGEDCOM ROX II CLI User Guide ii ...
Page 4: ...RUGGEDCOM ROX II CLI User Guide iv ...
Page 39: ...RUGGEDCOM ROX II CLI User Guide Table of Contents xxxix 19 5 VLANs 752 ...
Page 40: ...Table of Contents RUGGEDCOM ROX II CLI User Guide xl ...
Page 46: ...Preface RUGGEDCOM ROX II CLI User Guide xlvi Customer Support ...
Page 170: ...Chapter 5 System Administration RUGGEDCOM ROX II CLI User Guide 124 Deleting a Scheduled Job ...
Page 256: ...Chapter 6 Security RUGGEDCOM ROX II CLI User Guide 210 Enabling Disabling a Firewall ...
Page 402: ...Chapter 11 Wireless RUGGEDCOM ROX II CLI User Guide 356 Managing Cellular Modem Profiles ...
