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Planning
Planning is critical to a successful deployment. Many deployment problems, growth problems, and capacity problems occur because not enough time is taken to carefully plan a deployment. Plan your IBM® Sametime® installation by determining features needed, reviewing system requirements, determining capacity requirements, and the servers and computers needed for your deployment.
System and infrastructure requirements
Sametime® system and infrastructure requirements include network planning, policy planning, password and parameter planning and planning for single sign-on.
Ports
IBM® Sametime® uses a number of ports. There are ports for connecting server to servers, clients to servers, and WebSphere Application Server ports to configure. The topics in this section list the default ports and their uses, and ports to open in firewalls. A range of ports means that the application can select any port in that range if one or more of those ports are already in use by other applications.
DB2® and LDAP server ports
Defaults ports to connect to IBM® DB2® and LDAP from the Sametime® System Console.

DB2 and LDAP server ports

Defaults ports to connect to IBM® DB2® and LDAP from the Sametime® System Console.

DB2 server

Table 1. DB2 server ports
Default Port	Purpose
50000	The DB2 port is accessed by the Sametime System Console. The port number is configured by the DB2 server configuration.

LDAP server

The following ports are used on the LDAP server.

Table 2. LDAP server ports
Default Port	Purpose
389 or 636	The LDAP port is accessed by the Sametime System Console. The port number is configured by the LDAP server configuration.

When DB2, LDAP, the Sametime System Console are in play, check to see if a firewall is in place between any of these servers because a firewall will affect performance.