3Com MSR 50 Series Configuration Manual page 2067

[RouterD] 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 D has been synchronized to Router C and the clock
stratum level of Router D is 3, while that of Router C is 2.
# View the NTP session information of Router D, which shows that an association
has been set up between Router D and Router C.
[RouterD] display ntp-service sessions
**************************************************************************
[1234] 3.0.1.31
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations :
Configuring NTP Network requirements
Multicast Mode
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Network diagram
Figure 619 Network diagram for NTP multicast mode configuration
Router A
source reference
127.127.1.0
1
Router C's local clock is to be used as a reference source, with the stratum level
of 2.
Router C works in the multicast serve mode and, and Router C sends out
multicast messages from Ethernet 1/0.
Router D and Router A work in the multicast client mode and receive multicast
messages through their respective Ethernet 1/0.
Eth1/0 Eth1/1
1.0.1.11 /24 1.0.1.10/24
NTP Configuration Examples
stra reach poll now
2 254 64 62
3.0.1.31 /24
Eth1/0
3.0.1.30/24
Router B
3.0.1.32 /24
offset delay disper
-16.0 32.0 16.6
Eth1/0
Router C
Eth1/0
Router D
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