3Com Switch 8807, Configuration Manual

Page: 763 / 883

NTP Configuration Example 763
# Set the local clock as the NTP master clock at stratum 2.
[3Com3] ntp-service refclock-master 2
Configure Switch 3Com4.
# Enter system view.
<3Com4> system-view
# Set 3Com1 as the NTP server at stratum 3 after synchronization.
[3Com4] ntp-service unicast-server 3.0.1.31
# Set 3Com5 as peer
[3Com4] ntp-service unicast-peer 3.0.1.33
Configure Switch 3Com5.(3Com4 has been synchronized by 3Com3)
# Enter system view.
<3Com5> system-view
# Set the local clock as the NTP master clock at stratum 1.
[3Com5] ntp-service refclock-master 1
# After performing local synchronization, set 3Com4 as a peer.
[3Com5] ntp-service unicast-peer 3.0.1.32
The above examples configure 3Com4 and 3Com5 as peers and configure 3Com5
as in active peer mode and 3Com4 in passive peer mode. Since 3Com5 is at
stratum 1 and 3Com4 is at stratum 3, synchronize 3Com4 by 3Com5.
After synchronization, 3Com4 status is shown as follows:
[3Com4] display ntp-service status
Clock status: synchronized
Clock stratum: 2
Reference clock ID: 3.0.1.31
Nominal frequency: 60.0002 Hz
Actual frequency: 60.0002 Hz
Clock precision: 2^17
Clock offset: -9.8258 ms
Root delay: 27.10 ms
Root dispersion: 49.29 ms
Peer dispersion: 10.94 ms
Reference time: 19:21:32.287 UTC Oct 24 2004(C5267F3C.49A61E0C)
By this time, 3Com4 has been synchronized by 3Com5 and it is at stratum 2, or
higher than 3Com5 by 1.
Display the sessions of 3Com4 and you will see 3Com4 has been connected with
3Com5.