Introduction
This document describes how to configure the Hostname/IP Address for the Cisco Unified Communication Manager..
Host name Configuration in Cisco Unified Communication Manager
Be aware that, if you do not configure the host name correctly, some components in Cisco Unified Communications Manager, such as the operating system, database, installation, and so on, may not work as expected.
Before you change the host name or IP address for any locations refer the below table as failing to update the host name or IP address correctly after it is configured may cause problems for Cisco Unified Communications Manager.
Host Name Location
Allowed Configuration
Allowed Number of Characters
Recommended First Character for Host Name
Recommended Last Character for Host Name
Host Name/ IP Address field System > Server in Cisco Unified Communications Manager Administration |
You can add or change the host name for any server in the cluster. |
2-63 |
alphabetic |
alphanumeric |
Hostname field Cisco Unified Communications Manager installation |
You can add the host name for any server in the cluster. |
1-63 |
alphabetic |
alphanumeric |
Hostname field Settings > IP > Ethernet in Cisco Unified Communications Operating System |
You can change, not add, the host name for any server in the cluster. |
1-63 |
alphabetic |
alphanumeric |
set network hostname hostname Command Line Interface |
You can change, not add, the host name for any server in the cluster. |
1-63 |
alphabetic |
alphanumeric |
The host name must follow the rules for ARPANET host names. Between the first and last character of the host name, you can enter alphanumeric characters and hyphens.
Points to remember
1) The Host Name/IP Address field in the Server Configuration window, which supports device-to-server, application-to-server, and server-to-server communication, allows you to enter an IPv4 address in dotted decimal format or a host name.After you install Cisco Unified Communications Manager on the publisher database server, the host name for the publisher automatically displays in this field. Before you install Cisco Unified Communications Manager on the subscriber server, enter either the IP address or the host name for the subscriber server in this field on the publisher database server.In this field, only configure a host name if Cisco Unified Communications Manager can access the DNS server to resolve host names to IP addresses; make sure that you configure the Cisco Unified Communications Manager name and address information on the DNS server.
In addition to configuring Cisco Unified Communications Manager information on the DNS server, you enter DNS information during the Cisco Unified Communications Manager installation.
2) During the Cisco Unified Communications Manager installation of the publisher database server, you enter the host name, which is mandatory, and IP address of the publisher server to configure network information; that is, if you want to use static networking.
During the Cisco Unified Communications Manager installation on the subscriber server, you enter the hostname and IP address of the publisher database server, so Cisco Unified Communications Manager can verify network connectivity and publisher-subscriber validation. Additionally, you must enter the host name and the IP address for the subscriber server. When the Cisco Unified Communications Manager installation prompts you for the host name of the subscriber server, enter the value that displays in the Server Configuration window in Cisco Unified Communications Manager Administration; that is, if you configured a host name for the subscriber server in the Host Name/IP Address field.
Related Links
Changing the IP address/host name of CUCM
