DNS Client

The 2020 IMG can be configured to execute Domain Name System (DNS) server lookups and queries. To configure the 2020 IMG for this functionality the DNS Servers and DNS Server objects must first be configured to notify the 2020 IMG of any DNS Servers configured within a specific domain. Once these objects are created, the DNS Client object needs to be created to configure the 2020 IMG as a client of each of the individual DNS Servers. Within the DNS Client object, information such as which interface on rear of 2020 IMG will be used to communicate with each of the DNS Servers. Other information within this object includes which DNS Server will be configured as the primary DNS Server, which will be configured as the secondary server, and which will be configured as the Tertiary server. The DNS Client object is created under the 2020 IMG Name object. Right click on 2020 IMG Name and select New DNS Client.

 

ClientView Pane

IMG EMS > Logical Node > IMG Name > DNS Client

SC_DNSClient.png

 

Maximum Objects

1 per Physical 2020 IMG

 

Related Topics and Dependencies

When configuring 2020 IMG to execute DNS queries/lookups, the DNS Servers and DNS Server objects must first be created. Once these objects are created and 2020 IMG knows about these DNS Servers, the DNS Client can be configured as a client to each of these DNS Servers. See DNS Servers and DNS Server links for more information.

DNS Servers
DNS Server
Configure DNS
 

Field Descriptions

DNS Client Network Interface

The DNS Client Network Interface field has a drop down menu displaying the IP addresses for each of the interfaces on the rear of 2020 IMG. These interfaces were configured under the IP Address object and were configured as CPU in the Physical Interface field of that object. When the object is initially created the DNS Client Network Interface field defaults to the IP address of the CPU/Network Interface (CTRL0) configured through DHCP/BootP or SD Card.

 

Primary DNS Server

The Primary DNS Server field has a drop down menu with a list of all configured DNS Servers. Select which DNS Server configured will be the Primary DNS Server.

 

Secondary DNS Server

The Secondary DNS Server field has a drop down menu with a list of all configured DNS Servers. Select which DNS Server configured will be the Secondary DNS Server. This field will configure a Secondary DNS server in case the Primary DNS cannot be reached. If only one DNS Server is configured and the Primary DNS Server field is populated with that server then the secondary field will not display any DNS Servers to choose from.

 

Tertiary DNS Server

The Tertiary DNS Server field has a drop down menu with a list of all configured DNS Servers. Select which DNS Server configured will be the Tertiary DNS Server. This field will configure a Tertiary DNS server in case the Primary and Secondary DNS Servers cannot be reached.