3Com 7757 Configuration Manual page 760

760 C 70: NTP C
HAPTER ONFIGURATION
Configuring NTP
Authentication
n
Configuring NTP authentication on the client
Table 604 Configure NTP authentication on the client
Operation Command
Enter system view system-view
Enable NTP ntp-service authentication
authentication enable
globally
Configure the NTP ntp-service
authentication key authentication-keyid key-id
authentication-model md5
value
Configure the ntp-service reliable
specified key to be a authentication-keyid key-id
trusted key
Associate the NTP client mode:
specified key with the
ntp-service
corresponding NTP
unicast-server { remote-ip |
server
server-name }
authentication-keyid key-id
Peer mode:
ntp-service
unicast-peer { remote-ip |
peer-name }
authentication-keyid key-id
NTP authentication requires that the authentication keys configured for the
■
server and the client are the same. Besides, the authentication keys must be
trusted keys. Otherwise, the client cannot be synchronized with the server.
In NTP server mode and NTP peer mode, you need to associate the specified
■
key with the corresponding NTP server/active peer on the client/passive peer. In
these two modes, multiple servers/active peers may be configured for a
client/passive peer, and a client/passive choose the server/active peer to
synchronize to by the authentication key.
Configuring NTP authentication on the server
Table 605 Configure NTP authentication on the server
Operation Command
Enter system view system-view
Enable NTP ntp-service authentication
authentication enable
Configure NTP ntp-service
authentication key authentication-keyid key-id
authentication-model md5
value
Description
-
Required
By default, the NTP authentication
is disabled
Required
By default, the NTP authentication
key is not configured
Required
By default, no trusted
authentication key is configured
In NTP client mode and NTP
■
peer mode, you need to
associate the specified key with
the corresponding NTP server
on the client.
You can associate the NTP
■
server with the authentication
key while configuring the
switch to operate in a specific
NTP mode. You can also
associate them using this
command after configuring the
NTP mode where the switch is
to operate
Description
-
Required
By default, NTP authentication is
disabled
Required
By default, NTP authentication key
is not configured