IPv6 addresses use a different format from IPv4 addresses to support a greater range of direct addresses to computers on the internet. Enabling IPv6 addressing reduces the need for Network Address Translators while improving the efficiency of routing and providing for greater security. Beginning with release 8.0.2, IBM
® Sametime servers and clients support the use of IPv6 addresses.
For more information on IPv6 addressing with Sametime, see the article Best practices for moving to IPv6
In this release of Sametime, some components have some limitations when supporting IPv6 addressing:
- Sametime System Console
When installing the Sametime® System Console on a system that supports both IPv4 and IPv6 addressing, the IPv4 and IPv6 addresses associated with the Sametime System Console must be mapped to the same host name. Additional host names cause problems in the Sametime System Console because SSL certificates can be generated using either the IPV4 or IPV6 host name, which might not match during authentication.
- Sametime Gateway
You must install the Gateway with a special parameter to enable it for IPv6 addressing; you cannot enable it for support after deployment. The instructions for installing a Sametime Gateway server include information on the parameter and how to use it.
- Sametime Media Manager
The Media Manager does not support IPv6 addressing in this release. If your Sametime deployment includes a Media Manager server, you cannot enable IPv6 addressing at this time. IPv6 addressing will be supported in an upcoming release of Sametime Media Manager.
- Sametime Connect clients
If you support only IPv6 addressing, clients from releases earlier than 8.0.2 will not generate error messages but will appear "broken" to users because they cannot communicate with the IPv6–enabled servers. To avoid lengthy investigations of problems caused by attempts to use older clients with servers where only IPv6 addressing is enabled, you should only use clients from release 8.0.2 or later. If you support both IPv4 and IPv6 addressing, all Sametime clients can communicate all Sametime servers provided you configure those servers to listen for IPv4–format addresses as well as IPv6–format addresses.
- Sametime Advanced
Sametime Advanced does not yet support IPv6 addressing. If your Sametime deployment includes Sametime Advanced, you cannot enable IPv6 at this time. IPv6 addressing will be supported in an upcoming release of Sametime Advanced.
- Sametime Unified Telephony
Sametime Unified Telephony does not yet support IPv6 addressing. If your Sametime deployment includes Sametime Unified Telephony, you cannot enable IPv6 at this time. IPv6 addressing will be supported in an upcoming release of Sametime Unified Telephony.
Enabling support for IPv6 addressing in Sametime products requires configuration changes to various components of a deployment, as described in the following topics:
Supporting IPv4, IPv6, or both protocolsParent topic: Planning
Sametime deployment can support IPv4 addressing, IPv6 addressing, or both protocols. The option you choose will determine how you configure the servers in your deployment.
Enabling support for IPv6
Enabling IPv6 support in an IBM
Sametime deployment involves configuration changes to the operating system and networks as well as the Sametime components themselves.