HP 6125G Configuration Manual page 39

The output shows that NTP authentication is enabled on Device B, but not enabled on Device C.
Therefore, Device B cannot synchronize to Device C.
# Enable NTP authentication Device C. Configure an NTP authentication key, with the key ID 88
and key value 123456, and specify the key as a trusted key.
[DeviceC] ntp-service authentication enable
[DeviceC] ntp-service authentication-keyid 88 authentication-mode md5 123456
[DeviceC] ntp-service reliable authentication-keyid 88
# Specify Device C as an NTP broadcast server, and associate the key 88 with Device C.
[DeviceC] interface vlan-interface 2
[DeviceC-Vlan-interface2] ntp-service broadcast-server authentication-keyid 88
# Display NTP service status information on Device B.
[DeviceB-Vlan-interface2] display ntp-service status
Clock status: synchronized
Clock stratum: 4
Reference clock ID: 3.0.1.31
Nominal frequency: 64.0000 Hz
Actual frequency: 64.0000 Hz
Clock precision: 2^7
Clock offset: 0.0000 ms
Root delay: 31.00 ms
Root dispersion: 8.31 ms
Peer dispersion: 34.30 ms
Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)
The output shows that Device B has synchronized to Device C because it has a higher stratum than
Device C.
# Display NTP session information for Device B.
[DeviceB-Vlan-interface2] display ntp-service sessions
source reference
**************************************************************************
[1234] 3.0.1.31 127.127.1.0
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations :
The output shows that an association has been set up between Device B and Device C.
# Display NTP service status information on Device A.
[DeviceA-Vlan-interface2] display ntp-service status
Clock status: synchronized
Clock stratum: 4
Reference clock ID: 3.0.1.31
Nominal frequency: 64.0000 Hz
Actual frequency: 64.0000 Hz
Clock precision: 2^7
Clock offset: 0.0000 ms
Root delay: 31.00 ms
Root dispersion: 8.31 ms
Peer dispersion: 34.30 ms
Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)
stra reach
3 254
1
32
poll now offset
64 62 -16.0
delay disper
32.0 16.6