3Com WX3000 Series Operation Manual page 487

To do...
Configure the NTP
authentication key
Configure the specified key as
a trusted key
Associat
Configure on the
e the
client in the
specified
server/client mode
key with
the
Configure on the
correspo
symmetric-active
nding
peer in the
NTP
symmetric peer
server
mode
NTP authentication requires that the authentication keys configured for the server and the client be
the same. Besides, the authentication keys must be trusted keys. Otherwise, the clock of the client
cannot be synchronized with that of the server.
In NTP server mode and NTP peer mode, you need to associate the specified key with the
corresponding NTP server (symmetric-active peer) on the client (symmetric-passive peer). In these
two modes, multiple NTP servers (symmetric-active peers) may be configured for a client/passive
peer, and therefore, the authentication key is required to determine which NTP server the local
clock is synchronized to.
Configuring NTP authentication on the server
Follow these steps to configure NTP authentication on the server:
To do...
Enter system view
Enable NTP authentication
Configure an NTP
authentication key
Configure the specified key as a
trusted key
Enter VLAN interface view
Use the command...
ntp-service
authentication-keyid key-id
authentication-model md5 value
ntp-service reliable
authentication-keyid key-id
ntp-service unicast-server
{ remote-ip | server-name }
authentication-keyid key-id
ntp-service unicast-peer
{ remote-ip | peer-name }
authentication-keyid key-id
Use the command...
system-view
ntp-service authentication
enable
ntp-service
authentication-keyid key-id
authentication-mode md5
value
ntp-service reliable
authentication-keyid key-id
interface Vlan-interface vlan-id
1-12
Remarks
Required
By default, no NTP
authentication key is
configured.
Required
By default, no trusted key is
configured.
Required
For the client in the NTP
broadcast/multicast mode,
you just need to associate the
specified key with the client
on the corresponding server.
Remarks
—
Required
Disabled by default.
Required
By default, no NTP
authentication key is
configured.
Required
By default, no trusted
authentication key is
configured.
—