sys ntp
sys ntp(1) BIG-IP TMSH Manual sys ntp(1)
NAME
ntp - Configures the Network Time Protocol (NTP) daemon for the BIG-IP(r) system.
MODULE
sys
SYNTAX
Configure the ntp component within the sys module using the following syntax.
MODIFY
modify ntp
options:
description [string]
include [string]
restrict [add | delete | replace-all-with] {
[string] {
address [IP address]
default-entry [enabled | disable]
description [string]
ignore [enabled | disable]
kod [enabled | disable]
limited [enabled | disable]
low-priority-trap [enabled | disable]
mask [IP address]
no-modify [enabled | disable]
non-ntp-port [enabled | disable]
no-peer [enabled | disable]
no-query [enabled | disable]
no-serve-packets [enabled | disable]
no-trap [enabled | disable]
no-trust [enabled | disable]
ntp-port [enabled | disable]
version [enabled | disable]
}
}
restrict none
servers [add | delete | replace-all-with] {
[hostname | IP address] ...
}
servers none
timezone [string]
edit ntp
options:
all-properties
non-default-properties
DISPLAY
list ntp
list ntp [option]
show running-config ntp
show running-config ntp [option]
options:
all-properties
non-default-properties
one-line
DESCRIPTION
You can use this component to configure the NTP servers for the system.
EXAMPLES
modify ntp servers add {192.168.1.245}
Adds the NTP server with the IP address, 192.168.1.245, to the system.
modify ntp servers replace-all-with {time.f5net.com}
Replaces the existing list of NTP servers with a single host, time.f5net.com.
modify ntp timezone "America/Los_Angeles"
Sets the system time to Pacific Standard Time.
modify ntp restrict add { basicrestrict { default-entry enable ignore enable } }
Adds a default restriction denying all packets.
OPTIONS
description
User defined description.
include
Warning: Do not use this option without assistance from the F5 Technical Support team. The system does
not validate the commands issued using the include option. If you use this option incorrectly, you put
the functionality of the system at risk.
restrict
Specifies a set of access restrictions.
address
The address for the entry. See also, the mask option. The default value is 0.0.0.0.
default-entry
Specifies whether the entry is the default entry. The default value is disabled.
description
User defined description.
ignore
Specifies whether all packets will be ignored. The default value is disabled.
kod Specifies whether a kod (kiss of death) packet will be sent when an access violation occurs. The
default value is disabled.
limited
Specifies whether service will be denied if packet spacing limits are violated. The default value is
disabled.
low-priority-trap
Specifies whether lower priority traps will be overridden by normal priority traps. The default
value is disabled.
mask The mask for the entry. See also, the address option. The default value is 0.0.0.0.
no-modify
Specifies whether ntpq and ntpdc queries that attempt to modify the server are allowed. The default
value is disabled.
non-ntp-port
When enabled, the restrict entry will be matched only if the source port is not the standard NTP UDP
port (123). The default value is disabled.
no-peer
Specifies whether packets will be denied if they mobilize a new association. The default value is
disabled.
no-query
Specifies whether ntpq and ntpdc queries will be denied. The default value is disabled.
no-serve-packets
Specifies whether all queries except ntpq and ntpdc will be denied. The default value is disabled.
no-trap
Specifies whether to decline the mode 6 control message trap service to matching hosts. The default
value is disabled.
no-trust
Specifies whether to reject packets that are not cryptographically authenticated. The default value
is disabled.
ntp-port
When enabled, the restrict entry will be matched only if the source port is the standard NTP UDP
port (123). The default value is disabled.
version
Specifies whether packets will be rejected if they do not match the local NTP version. The default
values is disabled.
servers
Configures NTP servers for the BIG-IP system.
timezone
Specifies the time zone that you want to use for the system time.
SEE ALSO
edit, list, modify, show, tmsh
COPYRIGHT
No part of this program may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying, recording, or information storage and retrieval systems, for any purpose
other than the purchaser's personal use, without the express written permission of F5 Networks, Inc.
F5 Networks and BIG-IP (c) Copyright 2009-2010. All rights reserved.
BIG-IP 2010-10-06 sys ntp(1)