H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur télécharger pdf (Page 41)

Figure 16 Network diagram

Configuration procedure

1. Set the IP address for each interface as shown in Figure 16. (Details not shown.)

2. Configure Switch A:

# Configure Switch A to operate in NTP broadcast client mode and receive NTP broadcast

messages on VLAN-interface 2.

<SwitchA> system-view

[SwitchA] interface vlan-interface 2

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

3. Configure Switch B:

# Enable NTP authentication on Switch B. Configure an NTP authentication key, with the key ID of

88 and key value of 123456. Specify the key as a trusted key.

<SwitchB> system-view

[SwitchB] ntp-service authentication enable

[SwitchB] ntp-service authentication-keyid 88 authentication-mode md5 123456

[SwitchB] ntp-service reliable authentication-keyid 88

# Configure Switch B to operate in broadcast client mode and receive NTP broadcast messages

on VLAN-interface 2.

[SwitchB] interface vlan-interface 2

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

4. Configure Switch C:

# Configure Switch C to operate in NTP broadcast server mode and use VLAN-interface 2 to send

NTP broadcast packets.

[SwitchC] interface vlan-interface 2

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

[SwitchC-Vlan-interface2] quit

# Switch A synchronizes its local clock based on the received broadcast messages sent from

Switch C. Display NTP service status information on Switch A, and you can see that Switch A has

synchronized to Switch C, the stratum level of Switch A is 4, and the stratum level of Switch C is 3.

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

Clock status: synchronized

Clock stratum: 4

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H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur Page 41