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Call Server Configuration
Polycom, Inc. 279
You can enable these embedded DNS servers on the Embedded DNS page. This is a supercluster-wide
setting.
Embedded DNS is enabled by default for newly installed RealPresence DMA systems. In its default
configuration, the Call server sub-domain controlled by DMA system field is populated with the default
sub-domain video.local. The system acts as an initial DNS server, resolving the FQDN
dma.video.local to the virtual IPv4 address of the local cluster. If you change the sub-domain to a
custom value, the embedded DNS service resolves dma.<newsubdomain> to the IP address of the
cluster.
If you wish to use this feature, your enterprise DNS must place the Polycom RealPresence DMA
supercluster in charge of resolving the sub-domain specified on this page. To do this, you must:
● Add NS records to your enterprise DNS so that it refers requests to resolve the site-based logical host
name (see Site Information Dialog) to these embedded DNS servers.
● Configure your enterprise DNS to forward requests for names in the site-based logical host name to
any of the clusters in the supercluster.
For more information, see Add Required DNS Records for the Polycom RealPresence DMA System.
The following table describes the fields on the Embedded DNS page.
To enable DNS publishing
1 Be sure you’ve added the required NS records, one for each cluster in the supercluster, to your
enterprise DNS and have configured it to forward requests for names in the logical Call Server
domain to any of the clusters in the supercluster (see Additional DNS Records for the Optional
Embedded DNS Feature).
2 Go to Admin > Call Server > Embedded DNS.
3 Click Enable embedded DNS service.
4 In the Call server sub-domain controlled by RealPresence DMA field, enter the logical Call
Server domain name (the enterprise domain for which the RealPresence DMA system is to provide
DNS) and click Update.
Note: Embedded DNS server does not support IPv6
The embedded DNS functionality is not supported in an IPv6 environment.
Field Description
Enable embedded DNS service Enables the embedded DNS servers.
Call server sub-domain controlled
by RealPresence DMA
The fully qualified domain name of the enterprise domain for which the
RealPresence DMA system is to provide DNS. For instance, for the base
domain example.com, the sub-domain that the RealPresence DMA system
services might be:
callservers.example.com
This is the logical Call Server domain name for which you must create NS
records in your enterprise DNS. And this is the domain name that the system
combines with each site name to form the logical FQDN that endpoints in
each site should register to.