Инструкции По Установке для 3com S7906E

 

1-20 

Figure 1-9 Network diagram for NTP broadcast mode configuration 

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 2.  

<SwitchC> system-view 

[SwitchC] ntp-service refclock-master 2 

# Configure Switch C to work in the broadcast server mode and send broadcast messages through 

VLAN-interface 2.  

[SwitchC] interface vlan-interface 2 

[SwitchC-Vlan-interface2] ntp-service broadcast-server 

2)  Configuration on Switch D: 

# Configure Switch D to work in the broadcast client mode and receive broadcast messages on 

VLAN-interface 2.  

<SwitchD> system-view 

[SwitchD] interface vlan-interface 2 

[SwitchD-Vlan-interface2] ntp-service broadcast-client 

3)  Configuration on Switch A: 

# Configure Switch A to work in the broadcast client mode and receive broadcast messages on 

VLAN-interface 3.  

<SwitchA> system-view 

[SwitchA] interface vlan-interface 3 

[SwitchA-Vlan-interface3] ntp-service broadcast-client 

Because Switch A and Switch C are on different subnets, Switch A cannot receive the broadcast 

messages from Switch C. Switch D gets synchronized upon receiving a broadcast message from 

Switch C.  

# View the NTP status of Switch D after clock synchronization.  

[SwitchD-Vlan-interface2] display ntp-service status 

 Clock status: synchronized 

 Clock stratum: 3  

 Reference clock ID: 3.0.1.31 

 Nominal frequency: 100.0000 Hz