3Com 5500G-EI - Ntp-Service Reliable Authentication-Keyid; Ntp-Service Source-Interface

NTP Configuration Commands 509
Designate an interface on the local equipment to transmit NTP multicast packet.
The local equipment operates in multicast-server mode and multicasts packets
regularly to its clients.
Example
Configure to transmit NTP multicast packets encrypted with Key 4 via
Vlan-Interface1 at 224.0.1.1 and use NTP version 3.
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]interface vlan-interface 1
[SW5500-Vlan-Interface1]ntp-service multicast-server 224.0.1.1
authentication-keyid 4 version 3
ntp-service reliable
authentication-keyid
Syntax
ntp-service reliable authentication-keyid number
undo ntp-service reliable authentication-keyid number
View
System view
Parameter
number : Specify 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 to use this command to configure one or
more than one key 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.
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]ntp-service authentication enable
[SW5500]ntp-service authentication-keyid 37 authentication-mode md5
BetterKey
[SW5500]ntp-service reliable authentication-keyid 37
ntp-service
source-interface
Syntax
ntp-service source-interface { interface-name | interface-type
interface-number
}
undo ntp-service source-interface