Configuring partitioned Domino servers to avoid IP conflicts

If you install multiple IBM® Sametime® Community Servers on a single computer, you must assign a distinct IP address to each server. On AIX® or Linux™, you can install multiple Sametime Community Servers on a single computer, within the same logical partition. Each Sametime Community Server instance runs on a separate partitioned IBM Domino® server. If you are also running any other Domino servers or HTTP servers within the same logical partition, you must also be certain that those servers are assigned separate IP addresses to avoid port conflicts. After installing a community server in a Domino partitioned-server environment, configure the partitioned servers to avoid IP conflicts.

About this task

Note: Do not install multiple Sametime Community servers on a Microsoft™ Windows™ server as that configuration is not supported.
If your computer hosts multiple community servers (a "multi-homed" configuration), you must define settings to ensure that the IP addresses for each community server do not conflict.

Procedure

  1. If your server has multiple IP addresses but they do not all translate to single DNS names, configure the community server to indicate which IP addresses to trust.
    1. Use a text editor to open the sametime.ini file located in the Sametime server data directory.
    2. In the [Config] section, add or create a comma-separated list of trusted IP addresses.

      VPS_TRUSTED_IPS=IPaddress1, IPaddress2

      For example:

      VPS_TRUSTED_IPS=192.0.2.10,192.0.2.11,192.0.2.12

    3. Save the changes.
  2. Specify the VPS_HOST setting in the sametime.ini file on each AIX or Linux Domino partitioned server so that an IP address can be assigned to each Sametime Community Server. This applies to all Domino partitioned servers on AIX or Linux.
    1. In the sametime.ini file, in the [Connectivity] section, add (or modify) this setting:

      VPS_HOST=Explicit_IP_address_of_this_server

      VPS_HOST specifies the explicit IP address of this Sametime Community Server. Use the IP address format that matches the setting UCM_RESOLVE_PREFERRED_IP_VER. For example, if you set that value to 4, then specify an IPv4-format address, or if you set that value to 6, then specify an IPv6-format address.

    2. Save the changes.
  3. If you entered a DNS name as the host name address for client connections and HTTP-tunneled client connections, you must specify a dotted-decimal IPv4 address that the fully qualified domain name resolves to.
    1. Log in to the Integrated Solutions Console.
    2. Click Sametime System Console > Sametime Servers > Sametime community servers.
    3. In the Sametime community servers list, click the deployment name of the server with the list of trusted IP addresses that you want to change.
    4. Click the Connectivity tab.
    5. In the Community Services Network section in Client Connections, specify the IPv4 server address as the host name.
    6. For HTTP Tunneled Client Connections, specify the IPv4 server address as the host name.
    7. Click OK.
  4. Restart the Sametime Community Server.