HP 6125G HP 6125G & 6125G/XG Blade Switches Network Management and Mon - Page 39

Therefore, Device B cannot synchronize to Device C., Display NTP session information for Device B.

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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 stra reach poll now offset delay disper [1234] 3.0.1.31 127.127.1.0 3 254 64 62 -16.0 32.0 16.6 note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured Total associations : 1 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) 32

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32
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
stra
reach
poll
now
offset
delay
disper
**************************************************************************
[1234] 3.0.1.31
127.127.1.0
3
254
64
62
-16.0
32.0
16.6
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations :
1
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)