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S2720, S5700, and S6700 V200R019C10 Configuration Guide - Device Management
This document describes the configurations of Device Management, including device status query, hardware management, Stack, SVF, cloud-based management, PoE, monitoring interface, OPS, energy-saving management, information center, fault management, NTP, synchronous ethernet, PTP.
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Disabling a Specified Interface from Receiving NTP Packets
Disabling a Specified Interface from Receiving NTP Packets
Context
Disable receipt of NTP packets by interfaces
connected to external devices in the following scenarios:
When an unreliable clock server exists on the interface. By default,
after the NTP function is enabled, all interfaces can receive NTP
packets. An unreliable clock source makes NTP clock data inaccurate.
When the NTP clock data has been modified by a malicious attack
on the interface.
Procedure
Run system-view
The system view is displayed.
Run interfaceinterface-typeinterface-number
The interface for receiving NTP packets is specified.
Run ntp-service [ ipv6 ] in-interface disable
The interface is disabled from receiving NTP packets.