Add an NTPv4 Server
Add a remote NTP server to the configuration by first specifying its IP address or fully qualified domain name (FQDN). NTP adds the IP address to a list of servers, which the local NTP client uses to query remote time servers for time information. The list of qualified servers called to is a peer list.
Before you begin
If you specify an FQDN for the server, you must configure DNS for address resolution.
About this task
For NTPv4, this procedure adds the NTP server information to the switch that is acting as an NTP client. You can configure a maximum of 20 NTP servers.
Procedure
- In the navigation pane, expand .
- Select NTPv4.
- Select the Server tab.
- Select Insert.
- Specify if the IP address is an IPv4 or IPv6 address or select dns to use a Fully Qualified Domain Name (FQDN) instead.
- Specify the IP address or FQDN of the NTP server.
- Select Insert.
Server Field Descriptions
Use the data in the following table to use the Server tab.
|
Name |
Description |
|---|---|
|
ServerAddressType |
Specifies the address type as either IPv4 or IPv6, or DNS for a Fully Qualified Domain Name (FQDN). |
|
ServerAddress |
Specifies the IP address or FQDN of the remote NTP server. |
|
Enable |
Activates or disables the remote NTP server. The default is enabled. |
|
Authentication |
Activates or disables MD5 or SHA1 authentication on this NTP server. MD5 or SHA1 produces a message digest of the key. MD5 or SHA1 verifies the integrity of the communication, authenticates the origin, and checks for timeliness. The default is no authentication. |
|
KeyId |
Specifies the key ID used to generate the MD5 or SHA1 digest for this NTP server. The default is 0, which indicates that authentication is disabled. |
|
Stratum |
Shows the stratum of the server. |
|
Version |
Shows the NTP version of the server. |
|
Broadcast |
Shows if broadcast is enabled or disabled |
|
AuthEnabled |
Shows if authentication is enabled or disabled |
|
AuthStatus |
Shows the authentication status. |
|
Synchronized |
Shows the status of synchronization with the server. |
|
Reachable |
Shows the NTP reachability status of the server. |
|
RootDelay |
Shows the root delay of the server. |
|
RootDisp |
Shows the root dispersion of the server. |
|
ServerDelay |
Shows the delay of the server. |
|
Dispersion |
Shows the dispersion of the server. |
|
Offset |
Shows the offset of the server. |
|
Precision |
Shows the NTP precision of the server in seconds. |
|
Jitter |
Shows the jitter of the server |
|
LastEvent |
Shows the last event of the server. |