3com 8807 User Guide
762
C
HAPTER
66: NTP C
ONFIGURATION
[3Com2] display ntp-service status
clock status: unsynchronized
clock stratum: 16
reference clock ID: none
nominal frequency: 100.0000 Hz
actual frequency: 100.0000 Hz
clock precision: 2^17
clock offset: 0.0000 ms
root delay: 0.00 ms
root dispersion: 0.00 ms
peer dispersion: 0.00 ms
reference time: 00:00:00.000 UTC Jan 1 1900(00000000.00000000)
After the synchronization, 3Com2 turns into the following status:
[3Com2] 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: 2^17
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, 3Com2 has been synchronized by 3Com1 and is at stratum 3, higher
than 3Com1 by 1.
than 3Com1 by 1.
Display the sessions of 3Com2 and you will see 3Com2 has been connected with
3Com1.
3Com1.
[3Com2] display ntp-service sessions
source reference stra reach poll now offset delay disper
********************************************************************
[12345]1.0.1.11 LOCAL(0) 3 377 64 16 -0.4 0.0 0.9
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
NTP Peer Configuration
Example
Network requirements
On 3Com3, set local clock as the NTP master clock at stratum 2. On 3Com2,
configure 3Com1 as the time server in server mode and set the local equipment as
in client mode. At the same time, 3Com5 sets 3Com4 as its peer. (Note: 3Com3
supports to configure the local clock as the master clock)
configure 3Com1 as the time server in server mode and set the local equipment as
in client mode. At the same time, 3Com5 sets 3Com4 as its peer. (Note: 3Com3
supports to configure the local clock as the master clock)
Network diagram
See Figure 7-2.
Configuration procedure
Configure Switch 3Com3.
# Enter system view.
<3Com3> system-view