HP 6125XLG R2306-HP 6125XLG Blade Switch Network Management and Monitoring Con - Page 45

IPv6 NTP multicast mode configuration example, Network requirements

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# Display the NTP status of Switch A after clock synchronization. [SwitchA-Vlan-interface3] 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 Leap indicator: 00 Clock jitter: 0.165741 s Stability: 0.000 pps Clock precision: 2^-10 Root delay: 0.00534 ms Root dispersion: 4.51282 ms Reference time: d0c61289.10b1193f Wed, Dec 29 2010 20:03:21.065 The output shows that Switch A has been synchronized to Switch C, the clock stratum level of Switch A is 3, and that of Switch C is 2. # Display IPv4 NTP association information for Switch A. [SwitchA-Vlan-interface3] display ntp-service sessions source reference stra reach poll now offset delay disper [1234]3.0.1.31 127.127.1.0 2 247 64 381 -0.0 0.0053 4.5128 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 Switch A and Switch C. IPv6 NTP multicast mode configuration example Network requirements As shown in Figure 14, Switch C functions as the NTP server for multiple devices on different network segments and synchronizes the time among multiple devices. • Switch C's local clock is to be used as a reference source, with the stratum level 2. • Switch C operates in IPv6 multicast server mode and sends out IPv6 multicast messages from VLAN-interface 2. • Switch A and Switch D operate in IPv6 multicast client mode and receive IPv6 multicast messages through VLAN-interface 3 and VLAN-interface 2 respectively. 39

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39
# Display the NTP status of Switch A after clock synchronization.
[SwitchA-Vlan-interface3] 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
Leap indicator: 00
Clock jitter: 0.165741 s
Stability: 0.000 pps
Clock precision: 2^-10
Root delay: 0.00534 ms
Root dispersion: 4.51282 ms
Reference time: d0c61289.10b1193f
Wed, Dec 29 2010 20:03:21.065
The output shows that Switch A has been synchronized to Switch C, the clock stratum level of
Switch A is 3, and that of Switch C is 2.
# Display IPv4 NTP association information for Switch A.
[SwitchA-Vlan-interface3] display ntp-service sessions
source
reference
stra reach poll
now offset
delay disper
********************************************************************************
[1234]3.0.1.31
127.127.1.0
2
247
64
381
-0.0 0.0053 4.5128
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 Switch A and Switch C.
IPv6 NTP multicast mode configuration example
Network requirements
As shown in
Figure 14
, Switch C functions as the NTP server for multiple devices on different network
segments and synchronizes the time among multiple devices.
•
Switch C's local clock is to be used as a reference source, with the stratum level 2.
•
Switch C operates in IPv6 multicast server mode and sends out IPv6 multicast messages from
VLAN-interface 2.
•
Switch A and Switch D operate in IPv6 multicast client mode and receive IPv6 multicast messages
through VLAN-interface 3 and VLAN-interface 2 respectively.