3Com WX3000 operation manual # Specify the key 42 as a trusted key

# Configure an MD5 authentication key, with the key ID being 42 and the key being aNiceKey.

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

# Specify the key 42 as a trusted key.

[DeviceB] ntp-service reliable authentication-keyid 42

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

After the above configurations, Device B is ready to synchronize with Device A. Because the NTP authentication function is not enabled on Device A, the clock of Device B will fail to be synchronized to that of Device A.

2)To synchronize Device B, you need to perform the following configurations on Device A.

# Enable the NTP authentication function.

[DeviceA] system-view

[DeviceA] ntp-service authentication enable

# Configure an MD5 authentication key, with the key ID being 42 and the key being aNiceKey.

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

# Specify the key 42 as a trusted key.

[DeviceA] ntp-service reliable authentication-keyid 42

(After the above configurations, the clock of Device B can be synchronized to that of Device A.) View the status of Device B after synchronization.

[DeviceB] display ntp-service status Clock status: synchronized

Clock stratum: 3

Reference clock ID: 1.0.1.11

Nominal frequency: 60.0002 Hz

Actual frequency: 60.0002 Hz

Clock precision: 2^18

Clock offset: 0.66 ms

Root delay: 27.47 ms

Root dispersion: 208.39 ms

Peer dispersion: 9.63 ms

Reference time: 17:03:32.022 UTC Thu Sep 7 2006 (BF422AE4.05AEA86C)

The output information indicates that the clock of Device B is synchronized to that of Device A, with a clock stratum level of 3, one stratum level lower than that Device A.

#View the information about NTP sessions of Device B (You can see that a connection is established between Device B and Device A).

<DeviceB> display ntp-service sessions
source		reference		stra reach poll			now offset	delay disper
*************************************************************************									[12345]
1.0.1.11	127.127.1.0	2	255	64	8	2.8	17.7	1.2
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 1

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