During migration, the existence of the new Office Communications Server 2007 R2 pool will require that users be authenticated on the existing Office Communications Server 2007 pool and be redirected from there.
The DNS SRV record can point only to a single pool, and in a
mixed environment the supported configuration is to use Office
Communications Server 2007, Director, with both Office
Communications Server 2007 and Office Communications Server 2007 R2
pools. This means that during migration, you should configure DNS
records to point to the Office Communications Server 2007 Director.
After the Office Communications Server 2007 pool is decommissioned
and you have an Office Communications Server 2007 R2 Director in
place, you can update the SRV record to the new Office
Communications Server 2007 R2 Director. You will need to make the
appropriate changes to the
_sipinternaltls._tcpDNS record. For more information,
see
You must create and configure internal and external DNS records to support the new system after you have upgraded your Directors and other next-hop servers. To create these DNS records:
- For each Standard Edition server and Enterprise pool, create
the records as explained in
- For each edge server or edge server array, create the records
as explained in
 Note: |
|---|
| Do not make any changes to existing DNS records. After you have deprecated the existing servers, you will remove these records. |
If your Office Communications Server 2007 R2 deployment will
include a Director and Edge Server and you intend to allow access
to external users who are homed on the new pool, you will need to
prepare a complete set of DNS records to support Office
Communications Server 2007 R2, Edge Server. Because Office
Communications Server 2007 is servicing the SIP domain, the Office
Communications Server 2007 R2 pool, Director, and Edge Server will
not be able to participate in federation or public IM connectivity
unless you create a new organization and a new SIP domain just for
the new pool. For details, see