Configuring Ntp Multicast Mode - H3C S3600 Series Operation Manual

Operation Manual – NTP
H3C S3600 Series Ethernet Switches-Release 1510

1.7.4 Configuring NTP Multicast Mode

I. Network requirements
The local clock of H3C3 is set to the NTP master clock, with a clock stratum level of 2.
H3C3 advertises multicast packets through Vlan-interface2.
S3600-1 and S3600-2 respectively listen to multicast packets through their own
Vlan-interface2.
Note:
This example assumes that H3C3 is a switch that supports the local clock being the
master clock.
II. Network diagram
Vlan Vlan
S3600-2 S3600-2
Figure 1-9 Network diagram for NTP multicast mode configuration
III. Configuration procedure
1) Configure H3C3.
# Enter system view.
<H3C3> system-view
[H3C3]
# Enter VLAN-interface2 view.
[H3C3] interface Vlan-interface 2
# Set H3C3 to a multicast server.
[H3C3-Vlan-interface2] ntp-service multicast-server
2) Configure S3600-1.
# Enter system view.
<S3600-1> system-view
1.0.1.31/24 1.0.1.31/24
-interface 2 -interface 2
H3C 4 H3C 4
3.0.1.31/24 3.0.1.31/24
Vlan-inte Vlan-inte rface 2 rface 2
H3C 3 H3C 3
3.0.1.32/24 3.0.1.32/24
Vlan-inte Vlan-inte
rface 2 rface 2
S3600-1 S3600-1
1-19
Chapter 1 NTP Configuration