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Operation Manual – NTP

H3C S3600 Series Ethernet Switches-Release 1510 Chapter 1

NTP Configuration

1-16

[H3C3] ntp-service unicast-peer 3.0.1.33

The S3600 Ethernet switch and H3C3 are a pair of peers. H3C3 operates in active peer

mode, while the S3600 Ethernet switch operates in passive peer mode. Because the

stratum level of the local clock of H3C3 is 1, and that of the S3600 Ethernet switch is 3,

the S3600 Ethernet switch is synchronized to H3C3.

View the status of the S3600 Ethernet switch after synchronization.

[S3600] display ntp-service status

Clock status: synchronized

Clock stratum: 2

Reference clock ID: 3.0.1.32

Nominal frequency: 60.0002 Hz

Actual frequency: 60.0002 Hz

Clock precision: 2^18

Clock offset: 0.0000 ms

Root delay: 31.28 ms

Root dispersion: 0.08 ms

Peer dispersion: 27.31 ms

Reference time: 07:07:59.823 UTC Apr 25 2006(C7F8494F.D2E568A5)

The output information indicates that the S3600 Ethernet switch is synchronized to

H3C3 and the stratum level of its local clock is 2, one level lower than that H3C3.

# View the information about the NTP sessions of the S3600 Ethernet switch (you can

see that a connection is established between the S3600 Ethernet switch and H3C3).

[S3600] display ntp-service sessions

source reference stra reach poll now offset delay disper

**************************************************************************

[2]3.0.1.32 LOCL 1 14 64 60 -1.0 0.0 1.6

note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured

1.7.3 Configuring NTP Broadcast Mode

I. Network requirements

The local clock of H3C3 is set to the NTP master clock, with a stratum level of 2. NTP

packets are broadcast through Vlan-interface2.

Configure S3600-1 and S3600-2 to listen to broadcast packets through their own

Vlan-interface2.

H3C S3600 Series User Manual

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