Digi IX20 - Page 759

Services Network Time Protocol
IX20 User Guide
759
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To delete the default NTPserver, time.devicecloud.com:
(config)> del service ntp server 0
(config)>
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To add the NTPserver to the beginning of the list, use the index value of 0 to indicate
that it should be added as the first server:
(config)> add service ntp server 0 time.server.com
(config)>
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To add the NTPserver to the end of the list, use the index keyword end:
(config)> add service ntp server end time.server.com
(config)>
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To add the NTPserver in another location in the list, use an index value to indicate the
appropriate position. For example:
(config)> add service ntp server 1 time.server.com
(config)>
Note This list is synchronized with the list of servers included with NTPclient configuration,
and changes made to one will be reflected in the other. See Configure the system time for
more information about NTPclient configuration.
5. Allow the device'slocal system clock to be used as backup time source:
(config)> service ntp local true
(config)>
6. (Optional) Configure the access control list to limit downstream access to the IX20 device's
NTPservice.
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To limit access to specified IPv4 addresses and networks:
(config)> add service ntp acl address end value
(config)>
Where value can be:
l
Asingle IPaddress or host name.
l
Anetwork designation in CIDRnotation, for example, 192.168.1.0/24.
l
any: No limit to IPv4 addresses that can access the NTPserver agent.
Repeat thisstep to list additional IPaddressesor networks.
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To limit access to specified IPv6 addresses and networks:
(config)> add service ntp acl address6 end value
(config)>
Where value can be: