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Chapter 3 Installing and Configuring Cisco Unified Presence
How to Install and Configure Cisco Unified Presence
•
Completing the Installation of Subsequent Cisco Unified Presence Servers, page 4
Configuring System Time on the Cisco Unified Presence Publisher Server
Before You Begin
•
Start and configure the basic installation, as described in the previous topic. As you install the
Cisco Unified Presence Publisher server, you have the option to set the system time manually using
the hardware clock or assign up to five external NTP addresses.
•
To ensure that accurate system time is set on the publisher server, we recommend that you configure
the Cisco Unified Communications Manager publisher as the only NTP server. The Cisco Unified
Communications Manager publisher is set as the sole NTP server for the cluster, then the subsequent
servers in the cluster will set the time from the Cisco Unified Communications Manager publisher
server.
•
We strongly recommend you to leave the Cisco Unified Communications Manager publisher as the
NTP server. However, if you require another NTP server, ensure that the server is stratum 9 or
higher Stratums range from 9 (lowest) to 1 (highest).
•
Regardless of any change you make to the NTP server during installation, it changes to
Cisco Unified Communications Manager publisher after installation.
Procedure
Step 1
Set correct system time in the Network Time Protocol Client Configuration window, as follows:
If you want to configure:
Action
An external NTP server
a.
Select
Yes.
b.
Enter the IP address, NTP server name, or
NTP server pool name for at least one NTP
server.
Note
If the network does not have DNS, you
must enter an IP address because the
hostname will not automatically resolve
to an IP address.
c.
Select
Proceed
to continue with the
installation.
Note
You can configure up to five NTP servers,
and we recommend that you use at least
three. The system contacts an NTP server
and automatically sets the time on the
hardware clock. If the Test button
displays, you can select
Test
to check
whether the NTP servers are accessible.
System time manually
a.
Select
No.
b.
Enter the appropriate date and time to set the
hardware clock.
c.
Select
OK
to continue with the installation.
