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New Member

NTP with UCM and Unity Connection

We have configured a router running as "ntp master" and set this via ip address in both UCM 6.1 and Unity Connection. They have IP connectivity and are on the same subnet, but neither server recognized/syncs with this router via NTP.

Any ideas of what the issue could be?

thanks in advance,

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Red

Re: NTP with UCM and Unity Connection

Hi Victor,

Can you try these methods;

NTP Servers

Ensure that external NTP server is stratum 9 or higher (1-9). To add, delete, or modify an external NTP server, follow this procedure:

--------------------------------------------------------------------------------

Note You can only configure the NTP server settings on the first node or publisher.

--------------------------------------------------------------------------------

Procedure

--------------------------------------------------------------------------------

Step 1 From the Cisco Unified Communications Operating System Administration window, navigate to Settings>NTP Servers.

The NTP Server Settings window displays.

Step 2 You can add, delete, or modify an NTP server:

•To delete an NTP server, check the check box in front of the appropriate server and click Delete.

•To add an NTP server, click Add, enter the hostname or IP address, and then click Save.

•To modify an NTP server, click the IP address, modify the hostname or IP address, and then click Save.

--------------------------------------------------------------------------------

Note Any change you make to the NTP servers can take up to five minutes to complete. Whenever you make any change to the NTP servers, you must refresh the window to display the correct status.

--------------------------------------------------------------------------------

Step 3 To refresh the NTP Server Settings window and display the correct status, choose Settings>NTP.

--------------------------------------------------------------------------------

Note After deleting, modifying, or adding NTP server, you must restart all the other nodes in the cluster for the changes to take affect.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/cucos/6_0_1/cucos/iptpch4.html#wp1042131

To Configure the Cisco Unity Connection and Exchange Servers to Access an NTP Server

--------------------------------------------------------------------------------

Step 1 On the Connection server, log on to Cisco Unified Operating System Administration.

Step 2 On the Settings menu, click NTP Servers.

Step 3 Click Add New.

Step 4 In the Hostname or IP Address field, enter the DNS name (FQDN) or the IP address of an NTP server that can be resolved by the Connection server and by every Exchange server on which Connection is accessing calendar data.

Step 5 Click Save.

http://www.cisco.com/en/US/docs/voice_ip_comm/connection/2x/administration/guide/2xcucsag296.html#wp1050720

Hope this helps!

Rob

4 REPLIES
Hall of Fame Super Red

Re: NTP with UCM and Unity Connection

Hi Victor,

Can you try these methods;

NTP Servers

Ensure that external NTP server is stratum 9 or higher (1-9). To add, delete, or modify an external NTP server, follow this procedure:

--------------------------------------------------------------------------------

Note You can only configure the NTP server settings on the first node or publisher.

--------------------------------------------------------------------------------

Procedure

--------------------------------------------------------------------------------

Step 1 From the Cisco Unified Communications Operating System Administration window, navigate to Settings>NTP Servers.

The NTP Server Settings window displays.

Step 2 You can add, delete, or modify an NTP server:

•To delete an NTP server, check the check box in front of the appropriate server and click Delete.

•To add an NTP server, click Add, enter the hostname or IP address, and then click Save.

•To modify an NTP server, click the IP address, modify the hostname or IP address, and then click Save.

--------------------------------------------------------------------------------

Note Any change you make to the NTP servers can take up to five minutes to complete. Whenever you make any change to the NTP servers, you must refresh the window to display the correct status.

--------------------------------------------------------------------------------

Step 3 To refresh the NTP Server Settings window and display the correct status, choose Settings>NTP.

--------------------------------------------------------------------------------

Note After deleting, modifying, or adding NTP server, you must restart all the other nodes in the cluster for the changes to take affect.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/cucos/6_0_1/cucos/iptpch4.html#wp1042131

To Configure the Cisco Unity Connection and Exchange Servers to Access an NTP Server

--------------------------------------------------------------------------------

Step 1 On the Connection server, log on to Cisco Unified Operating System Administration.

Step 2 On the Settings menu, click NTP Servers.

Step 3 Click Add New.

Step 4 In the Hostname or IP Address field, enter the DNS name (FQDN) or the IP address of an NTP server that can be resolved by the Connection server and by every Exchange server on which Connection is accessing calendar data.

Step 5 Click Save.

http://www.cisco.com/en/US/docs/voice_ip_comm/connection/2x/administration/guide/2xcucsag296.html#wp1050720

Hope this helps!

Rob

New Member

Re: NTP with UCM and Unity Connection

Hi Rob

I followed instructions but no luck. I have router set for stratum 9, and ntp master. both UCM and UC servers have ip connectivity and on same subnet. no acl preventing ntp.

any ideas ?

thanks

New Member

Re: NTP with UCM and Unity Connection

I set to stratum 15 which resolved.

thanks Rob:)

Hall of Fame Super Red

Re: NTP with UCM and Unity Connection

Hi Victor,

Good work my friend!

Take care,

Rob

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