3Com Switch 8800 Configuration Guide
Chapter 49 NTP Configuration
49-7
Table 49-8
Configure NTP authentication key
Operation
Command
Configure NTP authentication key
ntp-service authentication-keyid
number
authentication-mode
md5
value
Remove NTP authentication key
undo ntp-service authentication-keyid
number
Key number
number
ranges from 1 to 4294967295; the key
value
contains 1 to 32
ASCII characters.
49.2.4 Setting Specified Key as Reliable
This configuration task is to set the specified key as reliable.
Perform the following configuration in system view.
Table 49-9
Set the specified key as reliable
Operation
Command
Set the specified key as reliable
ntp-service reliable authentication-keyid
key
-
number
Cancel the specified reliable key.
undo ntp-service reliable
authentication-keyid key
-
number
Key number
key
-
number
ranges from 1 to 4294967295
49.2.5 Designating an Interface to Transmit NTP Messages
If the local equipment is configured to transmit all the NTP messages, these packets
will have the same source IP address, which is taken from the IP address of the
designated interface.
Perform the following configuration in system view.
Table 49-10
Designate an interface to transmit NTP messages
Operation
Command
Designate an interface to
transmit NTP messages
ntp-service source-interface
{
interface
-
name
|
interface
-
type
interface
-
number
}
Cancel the interface to
transmit NTP messages
undo ntp-service source-interface
An interface is specified by
interface
-
name
or
interface
-
type
interface
-
number
, and the
interface can be VLAN interface and Loopback interface at present. The source
address of the packets will be taken from the IP address of the interface. If the
