Calix B6 - Configuring NTP on Calix B6 through CLI or GUI

This article details the process of changing the NTP server settings for a Calix B6 through command line interface or CMS GUI.

CLI Instructions

Log into the device using SSH or Telnet. The default credentials are here: Default Equipment Logins. Then, enable privileged commands using the following.
```
enable
Password: razor
```
Show the current NTP configuration using the following command. Run this command as needed to see your progress.
```
show ntp
```
Depending on the software version running on the B6, output could look like either of the following.

or
Enter configuration mode with the following command. To show NTP config again, you must exit this mode.
```
configure terminal
```
Any servers in the list are always enabled and there is a maximum of three. Delete the undesired NTP server addresses using the following command.
```
no ntp date-server xxx.xxx.xxx.xxx
```
Add each new NTP server IP or hostname using the following command. Server priority is determined by the order that they are added.
```
ntp date-server xxx.xxx.xxx.xxx
```
Exit configuration mode using the following command.
```
exit
```
Ensure the device is synced to the new NTP server(s). This may take a few minutes.
```
show ntp
```

GUI Instructions