Configuring Ntp Client/Server Mode With Authentication - H3C S5810 Series Operation Manual

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Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)

As shown above, Switch D has been synchronized to Switch C, and the clock stratum level of Switch D

is 3, while that of Switch C is 2.

# View the NTP session information of Switch D, which shows that an association has been set up

between Switch D and Switch C.

[SwitchD-Vlan-interface2] display ntp-service sessions

**************************************************************************

[1234] 3.0.1.31

note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured

Total associations :

Configuring NTP Client/Server Mode with Authentication

Network requirements

The local clock of Device A is to be configured as a reference source, with the stratum level of 2.

Device B works in the client mode and Device A is to be used as the NTP server of Device B, with

Device B as the client.

NTP authentication is to be enabled on both Device A and Device B.

Figure 1-11 Network diagram for configuration of NTP client/server mode with authentication

Configuration procedure

Configuration on Device B:

<DeviceB> system-view

# Enable NTP authentication on Device B.

[DeviceB] ntp-service authentication enable

# Set an authentication key.

[DeviceB] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey

# Specify the key as a trusted key.

[DeviceB] ntp-service reliable authentication-keyid 42

# Specify Device A as the NTP server.

[DeviceB] ntp-service unicast-server 1.0.1.11 authentication-keyid 42

Before Device B can synchronize its clock to that of Device A, you need to enable NTP authentication

for Device A.

Perform the following configuration on Device A:

# Enable NTP authentication.

[DeviceA] ntp-service authentication enable

# Set an authentication key.

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