HP 4500G PWR 24-Port, Руководство по настройке

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[SwitchB] display ntp-service status
Clock status: synchronized
Clock stratum: 2
Reference clock ID: 3.0.1.33
Nominal frequency: 64.0000 Hz
Actual frequency: 64.0000 Hz
Clock precision: 2^7
Clock offset: -21.1982 ms
Root delay: 15.00 ms
Root dispersion: 775.15 ms
Peer dispersion: 34.29 ms
Reference time: 15:22:47.083 UTC Sep 19 2005 (C6D95647.153F7CED)
As shown above, Switch B has been synchronized to Switch C, and the clock stratum level of Switch B
is 2, while that of Switch C is 1.
# View the NTP session information of Switch B, which shows that an association has been set up
between Switch B and Switch C.
[SwitchB] display ntp-service sessions
source reference stra reach poll now offset delay disper
**************************************************************************
[245] 3.0.1.31 127.127.1.0 2 15 64 24 10535.0 19.6 14.5
[1234] 3.0.1.33 LOCL 1 14 64 27 -77.0 16.0 14.8
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 2
Configuring NTP Broadcast Mode
Network requirements
z
The local clock of Switch C is to be used as the master clock, with a stratum level of 2.
z
Switch C works in the broadcast server mode and sends out broadcast messages from
VLAN-interface 2.
z
Switch A and Switch D work in the broadcast client mode. Switch A listens to broadcast messages
through its VLAN-interface 3 and Switch D from its VLAN-interface 2.
Figure 1-9
Network diagram for NTP broadcast mode configuration
Vlan-int3
1.0.1.11/24
Vlan-int3
1.0.1.10/24
Vlan-int2
3.0.1.31/24
Vlan-int2
3.0.1.32/24
Vlan-int2
3.0.1.30/24
Switch A Switch B
Switch C
Switch D