93
Related commands
ntp-service ipv6 source
ntp-service ipv6 unicast-peer
ntp-service ipv6 unicast-server
ntp-service source
ntp-service unicast-peer
ntp-service unicast-server
ntp-service acl
Use ntp-service acl to configure the right for peer devices to access the NTP services on the local
device.
Use undo ntp-service acl to remove the configured NTP service access right.
Syntax
ntp-service { peer | query | server | synchronization } acl ipv4-acl-number
undo ntp-service { peer | query | server | synchronization } [ acl ipv4-acl-number ]
Default
The right for the peer devices to access the NTP services on the local device is peer.
Views
System view
Predefined user roles
network-admin
Parameters
peer: Allows time requests and NTP control queries (such as alarms, authentication status, and time
server information) from a peer device and allows the local device to synchronize itself to a peer
device.
query: Allows only NTP control queries from a peer device to the local device.
server: Allows time requests and NTP control queries from a peer device, but does not allow the
local device to synchronize itself to a peer device.
synchronization: Allows only time requests from a peer device.
acl ipv4-acl-number: Specifies an ACL by its number. The peer devices that match the ACL have the
access right specified in the command. The ipv4-acl-number argument represents an IPv4 basic
ACL number in the range of 2000 to 2999.
Usage guidelines
When the device receives an NTP request, it matches the request with the access rights in the order
from the least restrictive to the most restrictive: peer, server, synchronization, and query.
If no NTP access control is configured, the peer access right applies.
If the IP address of the peer device matches a permit statement in an ACL, the access right is
granted to the peer device. If a deny statement or no ACL is matched, no access right is
granted.
If no ACL is specified for an access right or the ACL specified for the access right is not created,
the access right is not granted.
If none of the ACLs specified for the access rights is created, the peer access right applies.
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