HP 5500 EI Series Configuration Manual page 40

Root delay: 31.00 ms
Root dispersion: 8.31 ms
Peer dispersion: 34.30 ms
Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)
The output shows that Device D has synchronized to Device C because it has a higher stratum than
Device C.
# Display NTP session information for Device D.
[DeviceD-Vlan-interface2] display ntp-service sessions
source
**************************************************************************
[1234] 3.0.1.31
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations :
The output shows that an association has been set up between Device D and Device C.
4. Configure Device B:
Because Device A and Device C are on different subnets, you must enable the multicast functions
on Device B before Device A can receive multicast messages from Device C.
# Enable IP multicast routing and IGMP. For more information about how to configure IGMP and
PIM, see IP Multicast Configuration Guide.
<DeviceB> system-view
[DeviceB] multicast routing-enable
[DeviceB] interface vlan-interface 2
[DeviceB-Vlan-interface2] pim dm
[DeviceB-Vlan-interface2] quit
[DeviceB] vlan 3
[DeviceB-vlan3] port gigabitethernet 1/0/1
[DeviceB-vlan3] quit
[DeviceB] interface vlan-interface 3
[DeviceB-Vlan-interface3] igmp enable
[DeviceB-Vlan-interface3] igmp static-group 224.0.1.1
[DeviceB-Vlan-interface3] quit
[DeviceB] interface gigabitethernet 1/0/1
[DeviceB-GigabitEthernet1/0/1] igmp-snooping static-group 224.0.1.1 vlan 3
5. Configure Device A:
<DeviceA> system-view
[DeviceA] interface vlan-interface 3
# Configure Device A to operate in multicast client mode and receive multicast messages on
VLAN-interface 3.
[DeviceA-Vlan-interface3] ntp-service multicast-client
# Display the NTP status of Device A after clock synchronization.
[DeviceA-Vlan-interface3] display ntp-service status
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 3.0.1.31
reference stra
127.127.1.0 2
1
30
reach poll now
254 64 62
offset delay disper
-16.0 31.0 16.6