3Com Switch 7700 Configuration Manual page 378

370 C 11: S
HAPTER YSTEM
M
ANAGEMENT
********************************************************************
****** [12345]127.127.1.0
0.0 0.0 1.0
[5]1.0.1.11
0.0 0.0
[5]128.108.22.44
0.0 0.0
note: 1 source(master),2 source(peer),3 selected,4 candidate,5
configured
Configuring NTP Multicast Mode
SW77003 sets the local clock as the master clock at stratum 2, and multicast
packets from Vlan-interface2. Set SW77004 and SW77001 to receive multicast
messages from their respective Vlan-interface2. See Figure 1-2.
Configure Ethernet Switch SW77003:
1 Enter system view.
<SW77003> system-view
2 # Set the local clock as a master NTP clock at stratum 2.
[SW77003] ntp-service refclock-master 2
3 Enter Vlan-interface2 view.
[SW77003] interface vlan-interface 2
4 Set it as a multicast server.
[SW77003-Vlan-Interface2] ntp-service multicast-server
Configure Ethernet Switch SW77004:
1 Enter system view.
<SW77004> system-view
2 Enter Vlan-interface2 view.
[SW77004] interface vlan-interface 2
3 Enable multicast client mode.
[SW77004-Vlan-Interface2] ntp-service multicast-client
Configure Ethernet Switch SW77001:
1 Enter system view.
<SW77001> system-view
2 Enter Vlan-interface2 view.
[SW77001] interface vlan-interface 2
3 Enable multicast client mode.
[SW77001-Vlan-Interface2] ntp-service multicast-client
The above examples configure SW77004 and SW77001 to receive multicast
messages from Vlan-interface2, SW77003 multicast messages from
Vlan-interface2. Since SW77001 and SW77003 are not located on the same
LOCAL(0)
0.0.0.0 16
0.0.0.0 16
7 377 64 57
0 64 - 0.0
0 64 - 0.0