H3C Technologies H3C MSR 50 - Manual (Page 61)

[RouterB-Ethernet1/1] igmp static-group 224.0.1.1
[RouterB-Ethernet1/1] quit
[RouterB] interface ethernet 1/2
[RouterB-Ethernet1/2] pim dm
5. Configure Router A:
<RouterA> system-view
[RouterA] interface ethernet 1/1
# Configure Router A to operate in multicast client mode and receive multicast messages on
Ethernet 1/1.
[RouterA-Ethernet1/1] ntp-service multicast-client
# Display the NTP status of Router A after clock synchronization.
[RouterA-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: 40.00 ms
Root dispersion: 10.83 ms
Peer dispersion: 34.30 ms
Reference time: 16:02:49.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)
The output shows that Router A has synchronized to Router C. The stratum level of Router A is 3,
and that of Router C is 2.
# Display NTP session information for Router A, which shows that an association has been set up
between Router A and Router C.
[RouterA-Ethernet1/1] display ntp-service sessions
source reference stra reach poll now offset delay disper
**************************************************************************
[1234] 3.0.1.31 127.127.1.0 2 255 64 26 -16.0 40.0 16.6
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 1
For more information about how to configuration IGMP and PIM, see IP Multicast Configuration Guide.
Configuration example for NTP client/server mode with
authentication
Network requirements
As shown in Figure 21 , perform the following configurations to synchronize the time between Device B
and Device A and ensure network security.
• The local clock of Device A is to be configured as a reference source, with the stratum level 2.
• Device B operates in client mode and Device A is to be used as the NTP server of Device B, with
Device B as the client.
• NTP authentication is to be enabled on both Device A and Device B.
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