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Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 2 Server Configuration
Server Configuration Settings
Caution If your network supports IPv6 or IPv4 and IPv6 in dual-stack mode, you can provision your
DNS server for IPv6 prior to upgrading from Cisco Unified Communications Manager
Release 7.0(1) to Release 7.1(2). However, do not configure the DNS records for Cisco
Unified Communications Manager for IPv6 until after you upgrade to Release 7.1(2).
Configuring the DNS records for Cisco Unified Communications Manager for IPv6 prior to
upgrading to Release 7.1(2) causes the upgrade to fail and causes your system to become
nonfunctional after you reboot.
• For DNS, make sure that you map the IP addresses of all servers, including dummy nodes, to the
host names on the DNS server. If you do not perform this task, Cisco Unified Communications
Manager generates alarms that inform you that the License Manager service is down.
• Cisco Unified Communications Manager Administration does not prevent you from updating the IP
Address field under any circumstances.
• When you attempt to change the IP address in the Server Configuration window, the following
message displays after you save the configuration: “Changing the host name/IP Address of the
server may cause problems with Cisco Unified Communications Manager. Are you sure that you
want to continue?” Before you click OK, make sure that you understand the implications of updating
the Host Name/IP Address field; for example, incorrectly updating this setting may cause Cisco
Unified Communications Manager to become inoperable; that is, the database may not work, you
may not be able to access Cisco Unified Communications Manager Administration, and so on. In
addition, updating this field without performing other related tasks may cause problems for Cisco
Unified Communications Manager.
• For additional information on changing the IP address or host name, refer to the document,
Changing the IP Address and Host Name for Cisco Unified Communications Manager Release
7.1(2).
Table 2-1 Server Configuration Settings
Field Description
Server Information
Host Name/IP Address If your network uses DNS that can map to IPv4 addresses, you can enter
the host name of the Cisco Unified Communications Manager server.
Otherwise, you must enter the full IPv4 address of the server.
Tip If your network supports IPv6 (or IPv4 and IPv6), configure the
IPv6 Name field in addition to the Hostname/IP Address field.
Note You must update the DNS server with the appropriate Cisco
Unified Communications Manager name and address
information before you enter that information in this field.