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NTP Configuration Commands 415
By default, the local Ethernet switch is not configured as an active NTP peer.
If you use remote-ip to specify a remote server as the peer of the local Ethernet
switch, the local switch operates in the active peer mode. In this case, the local
Ethernet switch and the remote server can be synchronized to each other.
Example
Configure the local peer to obtain time information from the peer with the IP
address 128.108.22.44 and also to provide time information to the remote peer.
Set the NTP version number to 3. The source IP address of NTP messages is the IP
address of Vlan- interface1.
<SW4500> system-view
System View: return to User View with Ctrl+Z.
[SW4500] ntp-service unicast-peer 128.108.22.44 version 3
source-interface Vlan-interface 1
ntp-service
unicast-server
Syntax
ntp-service unicast-server { remote-ip | server-name } [
authentication-keyid key-id | priority | source-interface
Vlan-interface vlan-id | version number ]*
undo ntp-service unicast-server { remote-ip | server-name }
View
System view
Parameter
remote-ip: IP address of an NTP server. This argument cannot be a broadcast
address, multicast group address, or IP address of a reference clock.
server-name: NTP server name, a string comprising 1 to 20 characters.
authentication-keyid key-id: Specifies the key ID used for sending messages
to the NTP server. The key-id argument ranges from 1 to 4294967295. You do not
need to configure authentication-keyid key-id if authentication is not required.
priority: Specifies the server identified by the remote-ip or the server-name
argument as the preferred server.
source-interface Vlan-interface vlan-id: Specifies an interface whose IP
address serves as the source IP address of NTP packets sent by the local device to
the server.
version number: Specifies the NTP version number. The number argument ranges
from 1 to 3 and defaults to 3.
Description
Use the ntp-service unicast-server command to configure an Ethernet
switch to operate in the NTP client mode.