3com 5500-ei pwr Installation Instruction

 

1-15 

Display the information about the 
sessions maintained by NTP 

display ntp-service 
sessions [ verbose ] 

Display the brief information 
about NTP servers along the path 
from the local device to the 
reference clock source 

display ntp-service trace 

 

z 

The local clock of Device A (a switch) is to be used as a master clock, with the stratum level of 2.  

z 

Device A is used as the NTP server of Device B (an S5500-EI Ethernet switch) 

z 

Configure Device B to work in the client mode, and then Device A will automatically work in the 

server mode. 

Figure 1-6 Network diagram for the NTP server/client mode configuration 

 

 

Perform the following configurations on Device B. 

# View the NTP status of Device B before synchronization. 

<DeviceB> 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: 2^18 

 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) 

# Set Device A as the NTP server of Device B. 

<DeviceB> system-view 

[DeviceB] ntp-service unicast-server 1.0.1.11 

# (After the above configurations, Device B is synchronized to Device A.) View the NTP status of Device 

B.