R3204P16-HP Load Balancing Module System Management Configuration Guide-6PW101
109
# Configure Router C to work in broadcast client mode and receive broadcast messages on Ethernet 1/1.
<RouterC> system-view
[RouterC] interface ethernet 1/1
[RouterC-Ethernet1/1] ntp-service broadcast-client
3. Configure Router A.
# Configure Router A to work in broadcast client mode and receive broadcast messages on Ethernet 1/1.
<RouterA> system-view
[RouterA] interface ethernet 1/1
[RouterA-Ethernet1/1] ntp-service broadcast-client
Because Router A and LB are on different subnets, Router A cannot receive the broadcast messages from
LB. Router C gets synchronized upon receiving a broadcast message from LB.
# View the NTP status of Router C after clock synchronization.
[RouterC-Ethernet1/1] display ntp-service status
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 3.0.1.31
Nominal frequency: 64.0000 Hz
Actual frequency: 64.0000 Hz
Clock precision: 2^7
Clock offset: 0.0000 ms
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)
As shown above, Router C has been synchronized to LB and the clock stratum level of Router C is 3, while
that of LB is 2.
# View the NTP session information of Router C, which shows that an association has been set up
between Router C and LB .
[RouterC-Ethernet1/1] display ntp-service sessions
source reference stra reach poll now offset delay disper
**************************************************************************
[1234] 3.0.1.31 127.127.1.0 2 254 64 62 -16.0 32.0 16.6
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 1
Configuring NTP multicast mode
Network requirements
As shown in Figure 62, LB functions as the NTP server for multiple devices on different network segments
and synchronizes the time among multiple devices.
• LB’s local clock is to be used as a reference source, with the stratum level of 2.
• LB works in the multicast server mode and sends out multicast messages from Ten-GigabitEthernet
0/0.1.
• Router C and Router A work in the multicast client mode and receive multicast messages through
their respective Ethernet 1/1.