APC ACRP500 manual DNS AdminstrationNetworkDNSservers, Query Type Selected Query Question to Use

DNS (Adminstration>Network>DNS>servers)

Use the options under DNS on the left navigation menu to configure and test the Domain Name System (DNS):

•Select servers to specify the IP addresses of the primary and optional secondary Domain Name System server. The cooling unit cannot send any e-mail messages unless at least the IP address of the primary DNS server is defined.

–The cooling unit waits a maximum of 15 seconds for a response from the primary DNS server or the secondary DNS server (if a secondary DNS server is specified). If the cooling unit does not receive a response within that time, e-mail cannot be sent. Therefore, use DNS servers on the same segment as the cooling unit or on a nearby segment (but not across a wide-area network [WAN]).

–After you define the IP addresses of the DNS servers, verify that DNS is working correctly by entering the DNS name of a computer on your network to look up the IP address for that computer.

•Select naming to define the host name and domain name of the cooling unit:

–Host Name: When an Administrator configures a host name here and a domain name in the Domain Name field, users can then enter a host name in any field in the cooling unit interface (except e-mail addresses) that accepts a domain name as input.

–Domain Name: An Administrator must configure the domain name here only. In all other fields in the cooling unit interface (except e-mail addresses) that accept domain names, the cooling unit adds this domain name when only a host name is entered.

•To override all instances of the expansion of a specified host name by the addition of the domain name, set the domain name field to its default, example.com, or to 0.0.0.0.

•To override the expansion of a specific host name entry—for example when defining a trap receiver—include a trailing period. The cooling unit recognizes a host name with a trailing period (such as mySnmpServer.) as if it were a fully qualified domain name and does not append the domain name.

•Select test to send a DNS query that tests the setup of your DNS servers:

–As Query Type, select the method to use for the DNS query:

•by Host: the URL name of the server

•by FQDN: the fully qualified domain name

•by IP: the IP address of the server

•by MX: the Mail Exchange used by the server

–In the Query Question field, identify the value to be used for the selected query type:

– View the result of the test DNS request in the Last Query Response field.