3com S7906E インストール手順

 

1-25 

 Nominal frequency: 100.0000 Hz 

 Actual frequency: 100.0000 Hz 

 Clock precision: 2^18 

 Clock offset: 0.0000 ms 

 Root delay: 31.00 ms 

 Root dispersion: 1.05 ms 

 Peer dispersion: 7.81 ms 

 Reference time: 14:53:27.371 UTC Sep 19 2005 (C6D94F67.5EF9DB22) 

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

is 3, while that of Device A is 2.  

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

Device B and Device A.  

[DeviceB] display ntp-service sessions 

      source      reference   stra  reach  poll  now  offset  delay  disper 

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

[12345] 1.0.1.11  127.127.1.0    2    63    64    3    -75.5    31.0  16.5 

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

Total associations :  1 

z 

Switch C’s local clock is to be used as a reference source, with the stratum level of 3. 

z 

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

VLAN-interface 2. 

z 

Switch D works in the broadcast client mode and receives broadcast messages through 

VLAN-interface 2. 

z 

NTP authentication is enabled on both Switch C and Switch D. 

Figure 1-12 Network diagram for configuration of NTP broadcast mode with authentication 

Vlan-int3
1.0.1.11/24

Vlan-int3

1.0.1.10/24

Vlan-int2

3.0.1.31/24

Vlan-int2

3.0.1.32/24

Vlan-int2
3.0.1.30/24

Switch A

Switch B

Switch C

Switch D

 

 

1)  Configuration on Switch C: 

# Specify the local clock as the reference source, with the stratum level of 3.