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Configuration procedure – H3C Technologies H3C S6300 Series Switches User Manual

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Switch A and Switch D operate in multicast client mode and receive multicast messages through

VLAN-interface 3 and VLAN-interface 2, respectively.

Figure 13 Network diagram

Configuration procedure

In this example, Switch B must support IPv4 multicast routing.

1.

Set the IP address for each interface as shown in

Figure 13

. (Details not shown.)

2.

Configure Switch C:
# Enable the NTP service.

system-view

[SwitchC] ntp-service enable

# Specify the local clock as the reference source, with the stratum level 2.

[SwitchC] ntp-service refclock-master 2

# Configure Switch C to operate in multicast server mode and send multicast messages through
VLAN-interface 2.

[SwitchC] interface vlan-interface 2

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

3.

Configure Switch D:
# Enable the NTP service.

system-view

[SwitchD] ntp-service enable

# Configure Switch D to operate in multicast client mode and receive multicast messages on
VLAN-interface 2.

[SwitchD] interface vlan-interface 2

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

4.

Verify the configuration:
# Because Switch D and Switch C are on the same subnet, Switch D can receive the multicast
messages from Switch C without being enabled with the multicast functions and can be

synchronized to Switch C. Display the NTP status of Switch D after clock synchronization.

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

Clock status: synchronized

Clock stratum: 3

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

NTP multicast client

Switch B

Switch C

NTP multicast server

Switch D

NTP multicast client