H3C Technologies H3C MSR 5600 - Manual (Page 103)

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Clock jitter: 0.044281 s
Stability: 0.000 pps
Clock precision: 2^-10
Root delay: 0.00229 ms
Root dispersion: 4.12572 ms
Reference time: d0d289fe.ec43c720 Sat, Jan 8 2011 7:00:14.922
The output shows that Router D has been synchronized to Router C, the clock stratum level of Router
D is 3, and the clock stratum level of Router C is 2.
# Display IPv4 NTP association information for Router D.
[RouterD-Ethernet1/1] display ntp-service sessions
source reference stra reach poll now offset delay disper
********************************************************************************
[1245]3.0.1.31 127.127.1.0 2 1 64 519 -0.0 0.0022 4.1257
Notes: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured.
Total sessions : 1
The output shows that an association has been set up between Router D and Router C.
5. Configure Router B:
Because Router A and Router C are on different subnets, you must enable the multicast functions on
Router B before Router A can receive multicast messages from Router C.
# Enable the IP multicast function.
system-view
[RouterB] multicast routing
[RouterB-mrib] quit
[RouterB] interface ethernet 1/1
[RouterB-Ethernet1/1] igmp enable
[RouterB-Ethernet1/1] igmp static-group 224.0.1.1
[RouterB-Ethernet1/1] quit
[RouterB] interface ethernet 1/2
[RouterB-Ethernet1/2] pim dm
6. Configure Router A:
# Enable the NTP service.
system-view
[RouterA] ntp-service enable
# Configure Router A to operate in multicast client mode and receive multicast messages from
Ethernet 1/1.
[RouterA] interface ethernet 1/1
[RouterA-Ethernet1/1] ntp-service multicast-client
7. Verify the configuration:
# Display the NTP status of Router A after clock synchronization.
[RouterA-Ethernet1/1] display ntp-service status
Clock status: synchronized
Clock stratum: 3
System peer: 3.0.1.31
Local mode: bclient
Reference clock ID: 3.0.1.31