3Com Switch 8800 Configuration Guide Chapter 49 NTP Configuration
49-13
Reference time: 19:21:32.287 UTC Oct 24 2004(C5267F3C.49A61E0C)
By this time, SW88004 has been synchronized by SW88005 and it is at stratum 2, or
higher than SW88005 by 1.
Display the sessions of SW88004 and you will see SW88004 has been connected with
SW88005.
[Quidwa4] display ntp-service sessions
source reference stra reach poll now offset delay disper
********************************************************************
[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
49.4.3 Configure NTP Broadcast Mode I. Network requirements
On SW88003, set local clock as the NTP master clock at stratum 2 and configure to
broadcast packets from Vlan-interface2. Configure SW88004 and SW88001 to listen to
the broadcast from their Vlan-interface2 respectively. (Note: SW88003 supports to
configure the local clock as the master clock)
II. Network diagram
See Figure 7-2.
III. Configuration procedure
Configure Ethernet Switch SW88003:
Enter system view.
<SW88003> system-view
Set the local clock as the NTP master clock at stratum 2.
[SW88003] ntp-service refclock-master 2
Enter Vlan-interface2 view.
[SW88003] interface vlan-interface 2
Set it as broadcast server.
[SW88003-Vlan-Interface2] ntp-service broadcast-server
Configure Ethernet Switch SW88004:
Enter system view.
<SW88004> system-view
Enter Vlan-interface2 view.
[SW88004] interface vlan-interface 2
[SW88004-Vlan-Interface2] ntp-service broadcast-client