Configuring Optional Ntp Parameters - 3Com Switch 4500 26-Port Configuration Manual

Configuring Optional
NTP Parameters
Operation
Configure an NTP
authentication key
Configure the specified key
to be a trusted key
Enter VLAN interface view
Associate the specified key
with the corresponding
NTP server
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.
Optional NTP parameters are:
Local VLAN interface that sends NTP packets
■
Number of dynamic sessions that can be established locally
■
VLAN interface disabled from receiving NTP packets
■
Table 340 Configure optional NTP parameters
Operation
Enter system view
Configure a local interface
that sends NTP packets
Configure the number of
sessions that can be
established locally
Enter VLAN interface view
Disable an interface from
receiving NTP packets
CAUTION:
If a sending interface is specified in the ntp-service unicast-server command or the
ntp-service unicast-peer command, the source IP address of an NTP packet is the
address of this interface.

Configuring Optional NTP Parameters

Command
ntp-service
authentication-keyid
key-id
authentication-mode md5
value
ntp-service reliable
authentication-keyid
key-id
interface Vlan-interface
vlan-id
Broadcast server mode:
ntp-service
broadcast-server
authentication-keyid
key-id
Multicast server mode:
ntp-service
multicast-server
authentication-keyid
key-id
Command
system-view
ntp-service
source-interface
Vlan-interface vlan-id
ntp-service
max-dynamic-sessions
number
interface Vlan-interface
vlan-id
ntp-service in-interface
disable
Description
Required
By default, no NTP authentication
key is configured.
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 the corresponding NTP server
on the server
You can associate an NTP server
with an authentication key while
configuring NTP mode. You can
also use this command to
associate them after configuring
the NTP mode.
Description
Optional
Optional
By default, up to 100 dynamic
sessions can be established locally.
Optional
By default, a VLAN interface
receives NTP packets.
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