3com S7906E Istruzione Sull'Installazione

 

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[SwitchB-vlan3] port gigabitethernet 2/0/1 

[SwitchB-vlan3] quit 

[SwitchB] interface vlan-interface 3 

[SwitchB-Vlan-interface3] igmp enable 

[SwitchB-Vlan-interface3] igmp static-group 224.0.1.1 

[SwitchB-Vlan-interface3] quit 

[SwitchB] interface gigabitethernet 2/0/1 

[SwitchB- GigabitEthernet2/0/1] igmp-snooping static-group 224.0.1.1 vlan 3 

4)  Configuration on Switch A: 

# Enable IP multicast routing and IGMP.  

<SwitchA> system-view 

[SwitchA] interface vlan-interface 3 

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

VLAN-interface 3.  

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

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

[SwitchA-Vlan-interface3] display ntp-service status 

 Clock status: synchronized 

 Clock stratum: 3  

 Reference clock ID: 3.0.1.31 

 Nominal frequency: 100.0000 Hz  

 Actual frequency: 100.0000 Hz  

 Clock precision: 2^18 

 Clock offset: 0.0000 ms  

 Root delay: 40.00 ms  

 Root dispersion: 10.83 ms  

 Peer dispersion: 34.30 ms  

 Reference time: 16:02:49.713 UTC Sep 19 2005 (C6D95F6F.B6872B02) 

As shown above, Switch A has been synchronized to Switch C, and the clock stratum level of Switch A 

is 3, while that of Switch C is 2.  

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

between Switch A and Switch C.  

[SwitchA-Vlan-interface3] display ntp-service sessions 

      source    reference    stra  reach  poll  now  offset   delay  disper 

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

[1234] 3.0.1.31  127.127.1.0    2   255     64    26   -16.0    40.0   16.6 

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

Total associations :  1 

 

Refer to IGMP Configuration in the IP Multicast volume for how to configure IGMP and PIM.