H3C Technologies H3C S3100 Series Switches - Manual (Page 473)

Operation Manual – NTP
H3C S3100-52P Ethernet Switch Chapter 1 NTP Configuration
1-11
Operation Command Description
NTP client mode:
ntp-service
unicast-server
{ remote-ip | server-name }
hentication-keyid
-id
aut
key
Associate the
specified key with
the corresponding
NTP server
Peer mode:
ntp-service
unicast-peer
{ remote-ip | peer-name }
authentication-keyid
key-id
z
In NTP client mode and
NTP peer mode, you need
to associate the specified
key with the corresponding
NTP server on the client.
z
You can associate the NTP
server with the
authentication key while
configuring NTP mode. You
can also use this command
to associate them after
configuring NTP mode.
Note:
z
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.
z
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 therefore, the authentication key is required to determine
which server the client is synchronized to.
II. Configuring NTP authentication on the server
Table 1-5
Configure NTP authentication on the server
Operation Command Description
Enter system view system-view —
Enable NTP
authentication
ntp-service
authentication
enable
Required
By default, the NTP
authentication function is
disabled.
Configure an NTP
authentication key
ntp-service
authentication-keyid
key-id
authentication-mode
md5
value
Required
By default, no NTP
authentication key is
configured.
Configure the
specified key to be
a trusted key
ntp-service reliable
authentication-keyid key-id
Required
By default, no trusted
authentication key is
configured.