Configuring Ntp Broadcast Mode With Authentication - H3C S5810 Series Operation Manual

Ethernet switches

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[DeviceA] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey

# Specify the key as a trusted key.

[DeviceA] ntp-service reliable authentication-keyid 42

# View the NTP status of Device B after clock synchronization.

[DeviceB] display ntp-service status

Clock status: synchronized

Clock stratum: 3

Reference clock ID: 1.0.1.11

Nominal frequency: 100.0000 Hz

Actual frequency: 100.0000 Hz

Clock precision: 2^18

Clock offset: 0.0000 ms

Root delay: 31.00 ms

Root dispersion: 1.05 ms

Peer dispersion: 7.81 ms

Reference time: 14:53:27.371 UTC Sep 19 2005 (C6D94F67.5EF9DB22)

As shown above, Device B has been synchronized to Device A, and the clock stratum level of Device B

is 3, while that of Device A is 2.

# View the NTP session information of Device B, which shows that an association has been set up

Device B and Device A.

[DeviceB] display ntp-service sessions

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

[12345] 1.0.1.11

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

Total associations :

Configuring NTP Broadcast Mode with Authentication

Network requirements

Switch C's local clock is to be used as a reference source, with the stratum level of 3.

Switch C works in the broadcast server mode and sends out broadcast messages from

VLAN-interface 2.

Switch D works in the broadcast client mode and receives broadcast messages through

VLAN-interface 2.

NTP authentication is enabled on both Switch C and Switch D.

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