Инструкции По Установке для 3com S7906E

 

1-19 

In the step above, Device B and Device C are configured as symmetric peers, with Device C in the 

symmetric-active mode and Device B in the symmetric-passive mode. Because the stratus level of 

Device C is 1 while that of Device B is 3, Device B is synchronized to Device C.  

# View the NTP status of Device B after clock synchronization.  

[DeviceB] display ntp-service status 

 Clock status: synchronized 

 Clock stratum: 2  

 Reference clock ID: 3.0.1.33 

 Nominal frequency: 100.0000 Hz  

 Actual frequency: 100.0000 Hz  

 Clock precision: 2^18 

 Clock offset: -21.1982 ms 

 Root delay: 15.00 ms  

 Root dispersion: 775.15 ms  

 Peer dispersion: 34.29 ms  

 Reference time: 15:22:47.083 UTC Sep 19 2005 (C6D95647.153F7CED) 

As shown above, Device B has been synchronized to Device C, and the clock stratum level of Device B 

is 2, while that of Device C is 1. 

# View the NTP session information of Device B, which shows that an association has been set up 

between Device B and Device C. 

[DeviceB] display ntp-service sessions 

       source     reference   stra  reach  poll  now   offset delay  disper 

************************************************************************** 

[245] 3.0.1.31  127.127.1.0    2    15    64   24   10535.0  19.6   14.5 

[1234] 3.0.1.33   LOCL          1    14    64   27    -77.0   16.0   14.8 

note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured 

Total associations :  2 

z 

Switch C’s local clock is to be used as a reference source, with the stratum level of 2. 

z 

Switch C works in the broadcast server mode and sends out broadcast messages from 

VLAN-interface 2. 

z 

Switch A and Switch D work in the broadcast client mode. Switch A listens to broadcast messages 

through its VLAN-interface 3 and Switch D from its VLAN-interface 2.