Command Manual – System Management 
Quidway S8500 Series Routing Switches  Chapter 7  NTP Configuration Commands
 
Huawei Technologies Proprietary 
7-12 
undo ntp-service reliable authentication-keyid number 
View 
System view 
Parameter 
number: Specifies the key number, ranging from 1 to 4294967295.  
Description 
Use the ntp-service reliable authentication-keyid command to configure the key as 
reliable. 
Use the undo ntp-service reliable authentication-keyid command to cancel the 
current setting.  
By default, no key is configured as reliable.  
When you enable the authentication, you can use this command to configure one or 
more than one keys as reliable. In this case, a Client will only get synchronized by a 
server whichever can provide a reliable key.  
Example 
# Enable NTP authentication, adopt MD5 encryption, and designate Key 37 BetterKey 
and configure it as reliable.  
<Quidway> system-view 
System View: return to User View with Ctrl+Z. 
[Quidway] ntp-service authentication enable 
[Quidway] ntp-service authentication-keyid 37 authentication-mode md5 
BetterKey 
[Quidway] ntp-service reliable authentication-keyid 37 
7.1.15  ntp-service source-interface 
Syntax 
ntp-service source-interface interface-type interface-number 
undo ntp-service source-interface 
View 
System view 
Parameter 
interface-type: Specifies the interface type and determine an interface with the 
interface-number parameter. The interface can be VLAN interface and Loopback 
interface currently.