DMA OperationsGuide Embedded DNS
280 Polycom, Inc.
Each Polycom DMA server hosts its own embedded DNS server. It publishes
a DNS A record for each site. That A record maps to the active cluster with
which endpoints at the site should register. Whenever responsibility for the
site moves from one cluster to another, the change is automatically published
by the embedded DNS server. Endpoints will automatically re-register to the
correct cluster.
You can enable these embedded DNS servers on the Embedded DNS page.
This is a supercluster-wide setting.
If you wish to use this feature, your enterprise DNS must place the Polycom
DMA system supercluster in charge of resolving a sub-domain. 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 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.
See “Additional DNS Records for the Optional Embedded DNS Feature” on
page26.
The following table describes the fields on the Embedded DNS page.
To enable DNS publishing
1Be 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 n ames in the logical Cal l Server dom ain to any of the clusters
in the supercluster (see “Additional DNS Records for the Optional
Embedded DNS Feature” on page26).
Note
The embedded DNS server publishes only A records, not AAAA records, and thus
is not supported in an IPv6 environment.
Table10-25 Fields on the Embedded DNS page
Field Description
Enable embedded DNS
service Enables the embedded DNS servers.
Call server sub-domain
controlled by DMA The fully qualified domain name of the enterprise
domain for which the DMA system is to provide DNS.
For instance, for the base domain example.com, the
sub-domain that the 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.