H3C H3C S5600 Series Operation Manual - page 21
Operation Manual – NTP
H3C S5600 Series Ethernet Switches-Release 1510
Chapter 1 NTP Configuration
1-20
The above configuration configures S5600-1 and S5600-2 to listen to multicast packets
through their VLAN interface 2, and H3C3 to advertise multicast packets through VLAN
interface 2. Because S5600-2 does not reside in the same network segment with H3C3,
S5600-2 cannot receive multicast packets sent by H3C3, while S5600-1 is
synchronized to H3C3 after receiving multicast packets sent by H3C3.
View the status of S5600-1 after the synchronization.
[S5600-1] display ntp-service status
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 3.0.1.31
Nominal frequency: 60.0002 Hz
Actual frequency: 60.0002 Hz
Clock precision: 2^18
Clock offset: 0.0000 ms
Root delay: 16.19 ms
Root dispersion: 18.18 ms
Peer dispersion: 10.94 ms
Reference time: 08:12:05.430 UTC Apr 25 2006(C7F85855.6E4302B4)
The output information indicates that S5600-1 is synchronized to H3C3, with the clock
stratum being 3, one stratum higher than H3C3.
# View the information about the NTP sessions of S5600-1 and you can see that a
connection is established between S5600-1 and H3C3.
[H3C4] display ntp-service sessions
source reference stra reach poll now offset delay disper
*************************************************************************
[1234] 3.0.1.31 127.127.1.0 2 1 64 2 -11.0 0.0 0.8
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
1.7.5 NTP Server Mode with Authentication Configuration
I. Network requirements
The local clock of H3C1 operates as the master NTP clock, with the clock stratum set to
2.
An S5600 series switch operates in client mode with H3C1 as the time server. H3C1
operates in the server mode automatically. Meanwhile, NTP authentication is enabled
on both sides.