Interface and Realm Support of DNS Servers

You can configure DNS functionality on a per-network-interface, or per-realm basis. Configuring DNS servers for your realms means that you can have multiple DNS servers in connected networks. In addition, this allows you to specify which DNS server to use for a given realm because the DNS might actually be in a different realm with a different network interface.

This feature is available for SIP only.

To configure realm-specific DNS in the ACLI:

  1. Access the realm-config configuration element. 
    ORACLE# configure terminal
ORACLE(configure)# media-manager
ORACLE(media-manager)# realm-config
ORACLE(realm-config)#
  2. dns-realm—Enter the name of the network interface that is configured for the DNS service you want to apply in this realm. If you do not configure this parameter, then the realm will use the DNS information configured in its associated network interface.

    Note:

    Note: If DNS is not configured on the associated network-interface of that realm, then following other configured realms shall be used to send out the query. These are listed in order of their preference.
    1. dns-realm of that realm.
    2. dns-realm of egress-realm-id under sip-config, if configured. If not configured, egress-realm-id would be used.
    3. dns-realm of home-realm-id under sip-config, if configured. If not configured, home-realm-id would be used.

    This is only applicable for SIP.