Configuring Optional Ntp Parameters; Configuring An Interface On The Local Switch To Send Ntp Messages - 3Com 4500 PWR 26-Port Configuration Manual

To do...
Configure the specified key as a
trusted key
Enter VLAN interface view
Associate
the specified
key with the
correspondi
ng
broadcast/m
ulticast client
The procedure for configuring NTP authentication on the server is the same as that on the client.
Besides, the client and the server must be configured with the same authentication key.

Configuring Optional NTP Parameters

Complete the following tasks to configure optional NTP parameters:

Configuring an Interface on the Local Switch to Send NTP messages

Configuring the Number of Dynamic Sessions Allowed on the Local
Switch
Disabling an Interface from Receiving NTP messages
Configuring an Interface on the Local Switch to Send NTP messages
Follow these steps to configure an interface on the local switch to send NTP messages:
To do...
Enter system view
Configure an interface on the
local switch to send NTP
messages
ntp-service reliable
authentication-keyid key-id
interface Vlan-interface vlan-id
Configure on the
ntp-service broadcast-server
NTP broadcast
authentication-keyid key-id
server
Configure on the
ntp-service multicast-server
NTP multicast
authentication-keyid key-id
server
Task
Use the command...
system-view
ntp-service source-interface
Vlan-interface vlan-id
Use the command...
54-13
Remarks
Required
By default, no trusted
authentication key is
configured.
—
In NTP broadcast server
mode and NTP multicast
server mode, you need to
associate the specified
key with
corresponding
broadcast/multicast client
You can associate an
NTP broadcast/multicast
client with
authentication key while
configuring NTP mode.
You can also use this
command to associate
them after configuring the
NTP mode.
Remarks
Optional
Optional
Optional
Remarks
—
Required
the
an