3Com 3C13636 Configuration Manual page 174

3Com Router 3000 Ethernet Family
Configuration Guide
# Enter the system view.
<3Com1> system-view
# Set the local clock as the NTP master clock and the stratum number is 2.
[3Com1] ntp-service refclcok-master 2
2) Configure 3Com2
# Enter the system view.
<3Com2> system-view
# Set 3Com1 as the time server.
[3Com2] ntp-service unicast-server 1.0.1.11 authentication-keyid 42
# Enable ID authentication.
[3Com2] ntp-service authentication enable
# Set the key.
[3Com2] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey
# Specify the key as reliable.
[3Com2] ntp-service reliable authentication-keyid 42
The above configurations synchronize the time of 3Com2 and 3Com1. Because
3Com1 does not enable ID authentication, 3Com2 cannot be synchronized to 3Com1.
Now the following configurations are added to 3Com1.
# Enable ID authentication.
[3Com1] ntp-service authentication enable
# Set the key.
[3Com1] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey
# Specify the key as reliable.
[3Com1] ntp-service reliable authentication-keyid 42
Now 3Com2 can be synchronized to 3Com1. The state of 3Com2 includes:
<3Com2> display ntp-service status
clock status: synchronized, stratum: 3, reference clock ID: 1.0.1.11
nominal freq: 250.0000 Hz, actual freq: 249.9992 Hz, precision: 2**19
offset:
(BF422AE4.05AEA86C)
root delay : 27.47 ms, root disper: 208.39 ms, peer disper: 9.63 ms
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 1.0.1.11
Nominal frequency: 250.0000 Hz
Actual frequency: 249.9992 Hz
Clock precision: 2^19
198.7425 ms, reftime:
3Com Corporation
17:03:32.022
8-20
Chapter 8 NTP Configuration
UTC Thu Sep 6 2001