764 CHAPTER 66: NTP CONFIGURATION
[Quidwa4] display ntp-service sessions
source reference stra reach poll now offset delay disper
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[12345]3.0.1.33 LOCAL(0) 2 377 64 16 0.0 0.0 0.9
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Configure NTP Broadcast
Mode
Network requirements
On 3Com3, set local clock as the NTP master clock at stratum 2 and configure to
broadcast packets from Vlan-interface2. Configure 3Com4 and 3Com1 to listen to
the broadcast from their Vlan-interface2 respectively. (Note: 3Com3 supports to
configure the local clock as the master clock)
Network diagram
See Figure 7-2.
Configuration procedure
Configure Switch 3Com3:
# Enter system view.
<3Com3> system-view
# Set the local clock as the NTP master clock at stratum 2.
[3Com3] ntp-service refclock-master 2
# Enter Vlan-interface2 view.
[3Com3] interface vlan-interface 2
# Set it as broadcast server.
[3Com3-Vlan-Interface2] ntp-service broadcast-server
Configure Switch 3Com4:
# Enter system view.
<3Com4> system-view
# Enter Vlan-interface2 view.
[3Com4] interface vlan-interface 2
[3Com4-Vlan-Interface2] ntp-service broadcast-client
Configure Switch 3Com1:
# Enter system view.
<3Com1> system-view
# Enter Vlan-interface2 view.
[3Com1] interface vlan-interface 2
[3Com1-Vlan-Interface2] ntp-service broadcast-client
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