766 CHAPTER 66: NTP CONFIGURATION
# Enter system view.
<3Com3> system-view
# Set the local clock as a master NTP clock at stratum 2.
[3Com3] ntp-service refclock-master 2
# Enter Vlan-interface2 view.
[3Com3] interface vlan-interface 2
# Set it as a multicast server.
[3Com3-Vlan-Interface2] ntp-service multicast-server
Configure Switch 3Com4:
# Enter system view.
<3Com4> system-view
# Enter Vlan-interface2 view.
[3Com4] interface vlan-interface 2
# Enable multicast client mode.
[3Com4-Vlan-Interface2] ntp-service multicast-client
Configure Switch 3Com1:
# Enter system view.
<3Com1> system-view
# Enter Vlan-interface2 view.
[3Com1] interface vlan-interface 2
# Enable multicast client mode.
[3Com1-Vlan-Interface2] ntp-service multicast-client
The above examples configure 3Com4 and 3Com1 to receive multicast messages
from Vlan-interface2, 3Com3 multicast messages from Vlan-interface2. Since
3Com1 and 3Com3 are not located on the same segments, 3Com1 cannot receive
the multicast packets from 3Com3, while 3Com4 is synchronized by 3Com3 after
receiving the multicast packet.
Configure
Authentication-Enabled
NTP Server Mode
Network requirements
3Com1 sets the local clock as the NTP master clock at stratum 2. 3Com2 sets
3Com1 as its time server in Server mode and itself in Client mode and enables
authentication. (Note: 3Com1 supports to configure the local clock as the master
clock)
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