Polycom 3725-76302-001LI manual Following table describes the fields on the Embedded DNS

DMA Operations Guide Embedded DNS

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.

Note

The embedded DNS server publishes only A records, not AAAA records, and thus is not supported in an IPv6 environment.

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 page 26.

The following table describes the fields on the Embedded DNS page.

Table 10-25Fields on the Embedded DNS page

Field	Description
Enable embedded DNS	Enables the embedded DNS servers.
service
Call server sub-domain	The fully qualified domain name of the enterprise
controlled by DMA	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.

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 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” on page 26).

280 Polycom, Inc.