3Com 4210 9-Port - Disabling an Interface from Receiving NTP Messages; Configuration Example; Configuring NTP Server;Client Mode; Displaying NTP Configuration

1-14
Operation Command Description
Configure the maximum number of
dynamic sessions that can be
established on the local switch
ntp-service
max-dynamic-sessions
number
Required
By default, up to 100 dynamic
sessions can be established
locally.
Disabling an Interface from Receiving NTP messages
Table 1-16 Disable an interface from receiving NTP messages
Operation Command Description
Enter system view
system-view
—
Enter VLAN interface view
interface Vlan-interface
vlan-id
—
Disable an interface from
receiving NTP messages
ntp-service in-interface
disable
Required
By default, a VLAN interface
receives NTP messages.
Displaying NTP Configuration
After the above configurations, you can execute the display commands in any view to display the
running status of switch, and verify the effect of the configurations.
Table 1-17 Display NTP configuration
Operation Command Description
Display the status of NTP services
display ntp-service status
Display the information about the sessions
maintained by NTP
display ntp-service sessions
[ verbose ]
Display the brief information about NTP
servers along the path from the local
device to the reference clock source
display ntp-service trace
Available in any
view
Configuration Example
Configuring NTP Server/Client Mode
Network requirements
z The local clock of Device A (a switch) is to be used as a master clock, with the stratum level of 2.
z Device A is used as the NTP server of Device B (an Switch 4210)
z Configure Device B to work in the client mode, and then Device A will automatically work in the
server mode.