Cisco Cisco Unified Communications Server 2000.4.3a - Manual (Page 10)

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Installing the Operating System on the Cisco Unified Communications Server, Versions 2000.4.3 and 2000.4.3a
OL-10221-02
Frequently Asked Questions About the Operating System Installation
• Do not include a space anywhere in the computer name, including leading or trailing spaces. Do not
use the following characters and symbols, which are not valid entries in computer names: \ " / [ ] :
| < > + = ; , ?.
Be aware that the labels are case insensitive and must begin and end with a letter or digit character. Do
not create domain names that contain digits only.
Note For unsupported cases, a message warns that the DNS implementation may not support UTF-8 or
underscore characters; for example, a message may display when you modify the hostname or DNS
suffix and enter a DNS name that includes UTF-8 or underscore character that is not listed in RFC 1123.
If you change the computer name after the application installation, you must reinstall the operating
system and the application.
Workgroup
This entry specifies the name of the workgroup to which this computer belongs. A workgroup comprises
a collection of computers that have the same workgroup name. Ensure that this entry of 15 characters or
less follows the same naming conventions as the computer name. A message displays if you attempt to
use the same name for the computer name and workgroup name.
Note Cisco strongly recommends that the server belongs to a workgroup before you install the application.
You can change the choice after the installation, but you must place the server in a workgroup again
before you upgrade any applications.
Domain Suffix
Always enter the Domain Name System (DNS) domain suffix in the format “mydomain.com” or
“mycompany.mydomain.com.” Cisco applications such as Cisco Unified CallManager depend on DNS
for resolution between the IP address to host name and vice versa. If your company does not support
internet name resolution with a DNS server, enter a fictitious domain suffix such as “mydomain.com” or
“mycompany.mydomain.com” during installation and use the same domain suffix when you configure
your DNS server.
TCP/IP Properties
Assign an IP address, subnet mask, and default gateway.
Note Cisco recommends that you choose static IP information, which ensures that the server obtains a fixed
IP address. With this choice, Cisco Unified IP Phones can register with the application when you plug
the phones into the network.