3Com 3C13636 Configuration Manual page 168

3Com Router 3000 Ethernet Family
Configuration Guide
# Enter the system view.
<3Com4> system-view
# Set 3Com3 as the time server and the stratum number is 3 after synchronization.
[3Com4] ntp-service unicast-server 3.0.1.31
3) Configure 3Com5 (3Com4 has been synchronized to 3Com3)
# Enter the system view.
<3Com5> system-view
# Set the local clock as the NTP master clock and stratum number is 1.
[3Com5] ntp-service refclock-master 1
# Set 3Com4 peer after the local is synchronized.
[3Com5] ntp-service unicast-peer 3.0.1.32
The above configurations make 3Com4 and 3Com5 as peers. 3Com5 is in active peer
mode and 3Com4 is in passive peer mode. Because the stratum number of 3Com5 is 1
and that of 3Com4 is 3, 3Com4 is synchronized to 3Com5.
The state of 3Com4 includes:
[3Com4] display ntp-service status
Clock status: synchronized
Clock stratum: 2
Reference clock ID: 3.0.1.33
Nominal frequency: 250.0000 Hz
Actual frequency: 249.9992 Hz
Clock precision: 2^19
Clock offset: 198.7425 ms
Root delay: 27.47 ms
Root dispersion: 208.39 ms
Peer dispersion: 9.63 ms
Reference time: 17:03:32.022 UTC Thu Sep 6 2001 (BF422AE4.05AEA86C)
Now 3Com4 is synchronized with 3Com5. Its stratum number is 2, which is 1 number
larger than that of 3Com5.
The association state of 3Com4 displays that 3Com4 has established connection with
3Com5.
[Quidwa4] display ntp-service sessions
source
********************************************************************
[12345]
3.0.1.33
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
reference stra reach poll now offset delay disper
127.127.1.0 2 1
3Com Corporation
8-14
Chapter 8 NTP Configuration
64 377 26.1 199.53 9.7