H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur télécharger pdf (Page 37)

Figure 14 Network diagram

Configuration procedure

1. Set the IP address for each interface as shown in Figure 14. (Details not shown.)

2. Configure the device:

# Configure the device to operate in multicast server mode and send multicast messages through

VLAN-interface 2.

[Device] interface vlan-interface 2

[Device-Vlan-interface2] ntp-service multicast-server

3. Configure Switch C:

# Configure Switch C to operate in multicast client mode and receive multicast messages on

VLAN-interface 2.

<SwitchC> system-view

[SwitchC] interface vlan-interface 2

[SwitchC-Vlan-interface2] ntp-service multicast-client

Because Switch C and the device are on the same subnet, Switch C can receive the multicast

messages from the device without being enabled with the multicast functions and can synchronize

to the device.

# Display the NTP status of Switch C after clock synchronization.

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

Clock status: synchronized

Clock stratum: 3

Reference clock ID: 3.0.1.31

Nominal frequency: 64.0000 Hz

Actual frequency: 64.0000 Hz

Clock precision: 2^7

Clock offset: 0.0000 ms

Root delay: 31.00 ms

Root dispersion: 8.31 ms

Peer dispersion: 34.30 ms

Reference time: 16:01:51.713 UTC Sep 19 2012 (C6D95F6F.B6872B02)

The output shows that Switch C has synchronized to the device. The stratum level of Switch C is 3,

and that of the device is 2.

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H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur Page 37