Configuring Ntp Authentication - Huawei AR530 Series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Device Management
ntp-service discard { min-interval min-interval-val | avg-interval avg-interval-
val }
The minimum inter-packet interval and the average inter-packet interval of NTP are configured.
By default, the minimum inter-packet interval of NTP is set to the first power of 2 in seconds,
namely, 2 seconds, and the average inter-packet interval of NTP is set to the fifth power of 2 in
seconds, namely, 32 seconds.
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4.5.4.5 Configuring NTP Authentication

Context
In some networks demanding high security, the authentication function needs to be enabled when
you use the NTP protocol. Password authentication of a client and a server ensures that the client
only synchronizes with a device that has been authenticated, improving the network security.
When configuring the NTP authentication function, note the following rules:
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Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ntp-service authentication enable
The NTP authentication function is enabled.
Step 3 Run:
ntp-service authentication-keyid key-id authentication-mode
[ cipher ] password
The NTP authentication key is configured.
Issue 01 (2014-11-30)
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The NTP authentication function must be enabled first; otherwise, authentication cannot
be implemented.
The NTP authentication function needs to be configured on both the client and the server.
Otherwise, the NTP authentication function does not take effect.
If the NTP authentication function is enabled, a trusted key is configured on the client.
Keys configured on the server and the client must be identical.
The device that wants to synchronize its clock should declare its key as reliable. Otherwise,
NTP authentication will fail.
NOTE
In NTP symmetric peer mode, the symmetric active peer functions as a client and the symmetric passive
peer functions as a server.
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4 NTP Configuration
{ md5 | hmac-sha256 }
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