To configure NTP on supported devices

Before you begin

NEs can act as NTP servers, clients, or peers.

The 7705 SAR acts as an NTP client as well as an NTP server. The 7705 SAR as an NTP server, and the support for NTP on a VPRN service is supported from Release 21.4 R1 and later.

Note: For the Wavence SM, if the main and spare NTP servers are defined with the same IP address in NEtO, only the IP address for the main server will be displayed in the NFM-P. Main and primary NTP servers with the same IP address should be avoided.

For any failed operation related to NTP server addition or modification, you must close the current GUI session on the NTP tab and reopen it before proceeding. This action removes the failed entry from the GUI cache so that it is not applied again.

The tabs and parameters that are configurable vary depending on the NE.

Steps
 
1 

On the equipment tree, choose Network→NE where NE is the object on which you need to configure NTP.

2 

Right-click on the NE and choose Properties. The Network Element (Edit) form opens.

3 

If you are configuring a 7705 SAR, Release 6.2 R1 or earlier, or a Wavence SM, click on the NTP tab and configure the NTP State parameter, and go to Step 6 . If you are configuring a 7705 SAR, Release 7.0 or later, go to Step 4 .

You must set the NTP State parameter to Enabled in order to configure the remaining NTP parameters.

4 

Configure the NTP State parameter on the General tab.

You must set the NTP State parameter to Enabled in order to configure the remaining NTP parameters.

When you change the NTP State parameter from Disabled to Enabled, you must click Apply and confirm the action in order to activate the NTP tab.

5 

Click on the NTP tab. The General tab is displayed.

6 

Configure the required parameters.

7 

If you are configuring NTP on an 1830 VWM, OS 6250 or OS 6450 device, go to Step 9. Otherwise, continue to Step 8.

8 

Configure Authentication:

  1. Click on the Authentication tab and click Create. The Network Time Protocol Authentication (Create) form opens.

  2. Configure the required parameters.

    The values of the Authentication Key Id and Authentication Key parameters must be the same on the reference clock server and the NE.

  3. Save your changes.

  4. Go to Step 10.

9 

Configure Authentication:

  1. Click on the Authentication tab and click Load Authentication Keys. A dialog box appears. Click Yes.

  2. Choose Resync→Resync All MIBs. A dialog box appears. Click Yes. The Authentication Keys are loaded.

  3. Save your changes.

10 

Configure an NTP server:

  1. Click on the Server tab and click Create. The NTP Server (Create) form opens.

  2. Configure the required parameters.

    Note:

    When the PTP Server parameter is enabled, the IP Address parameter becomes non-configurable. The address that is displayed in the field is not the PTP server address, it is an internal reference.

    The Authentication Key Id and NTP Version parameters are only displayed when the PTP Server parameter is not enabled.

    For 7705 SAR, NTP Version parameter supports version 2, version 3, and version 4 for IPv4 and only version 4 is supported for IPv6.

    If you are configuring NTP Server on an OS 6900 or OS 6860 or OS 6860E or OS 6860N or OS 6865 or OS 6465 or OS 6560 device, select Host mode as client.

  3. Save your changes.

    If you are configuring Wavence SM, go to Step 21 .

11 

If you are configuring NTP Peer on an OS 6900 or OS 6860 or OS 6860E or OS 6860N or OS 6865 or OS 6465 or OS 6560 device, continue to Step 12. Otherwise, go to Step 13.

12 

Configure an NTP peer:

  1. Click on the Server tab and click Create. The NTP Server (Create) form opens. Select Host mode as active.

  2. Save your changes.

  3. Go to Step 14.

13 

Configure an NTP peer:

  1. Click on the Peer tab and click Create. The NTP Peer (Create) form opens.

  2. Configure the required parameters.

    Note:

    For 7705 SAR, NTP Version parameter supports version 2, version 3, and version 4 for IPv4 and only version 4 is supported for IPv6.

  3. Save your changes.

14 

If you are configuring NTP Broadcast on an OS 6900 or OS 6860 or OS 6860E or OS 6860N or OS 6865 or OS 6465 or OS 6560 device, continue to Step 15. Otherwise, go to Step 16.

15 

Configure NTP broadcast:

  1. Click on the Server tab and click Create. The NTP Server (Create) form opens. Select Host mode as broadcast.

  2. Save your changes.

  3. Go to Step 17.

16 

Configure NTP broadcast:

  1. Click on the Broadcast tab and click Create. The NTP Broadcast (Create) form opens.

  2. Configure the Router Instance parameter.

  3. Select a source interface.

  4. Configure the required parameters.

    A warning message is displayed if the Direction parameter is set to transmit when the NTP Server parameter is not enabled in Step 6 .

    When the value of the Direction parameter is set to transmit, the Authentication Key Id, NTP Version, and Time to Live parameters are displayed.

  5. Save your changes.

17 

Configure NTP multicast:

  1. Click on the Multicast tab and click Create. The NTP Multicast (Create) form opens.

  2. Configure the required parameters.

    When the value of the Direction parameter is set to transmit, the Authentication Key Id and NTP Version parameters are displayed.

  3. Save your changes.

18 

Click on the Associations tab and perform the following to view the properties of the NTP associations, if required:

  1. Click Search. A list of NTP-associated NEs appears.

  2. Choose an NE and click Properties. The Network Time Protocol Associations (View) form opens. You can view information about the status and mode of the NTP server.

  3. Close the form.

19 

Click on the Clients tab and perform the following to view the properties of the NTP clients, if required:

  1. Click Search. A list of NTP clients appears.

  2. Choose an NTP client and click Properties. The Network Time Protocol Clients (View) form opens. You can view information about the status and mode of the NTP client.

  3. Close the form.

20 

Configure an NTP Disabled interfaces:

  1. Click on the Disabled Interfaces tab and click Create. The NTP Disabled interfaces (New instance) (create) form opens.

  2. Add IP Address.

  3. Save your changes.

21 

Save and close the forms.

End of steps