User Manual

UPS Network Management Card 3 User Guide53
Use the options under Manual Domain Name System Settings to configure he Domain Name System (DNS):
• Enabling the Override Manual DNS Settings means that configuration data from other sources like
DHCP take precedence over the manual configurations here.
• Specify the Primary DNS Server and, optionally, the Secondary DNS Server with IPv4 or IPv6
addresses. For the NMC to send e-mail, you must at least define the IP
address of the primary DNS
server.
– The NMC waits up to 15 seconds for a response from the primary DNS server or the secondary
DNS server. If the NMC does not receive a response within that time, e-mail cannot be sent. Use
DNS servers on the same segment as the NMC or on a nearby segment, but not across a wide-
area network (WAN).
– After you define the IP addresses of the DNS servers, test it, see “Testing DNS screen”.
• System Name Synchronization: Enabling this synchronizes the DNS hostname with the NMC
System Name. Click on the System Name link to define it.
If the DNS hostname and the NMC System Name are synchronized, the System Name is
limited to a certain number of characters, based on DNS RFC. If they are not synchronized,
the system name is limited to 255 characters.
• Host Name: After you configure a host name here and a domain name in the Domain
Name field, users can enter a host name in any field in the NMC interface (except e-mail addresses)
that accepts a domain name.
• Domain Name (IPv4/IPv6): For the NMC interface, you only need to configure the domain name here.
In all other fields in this UI — except e-mail addresses — that accept domain names, the NMC defaults
to adding this domain name when only a host name is entered.
– To override the expansion of a specified host name by the addition of a domain name, set this
domain name field to its default, somedomain.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 NMC 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.
• Domain Name (IPv6): Specify the IPv6 domain name here.
Testing DNS screen
Path: Configuration > Network > DNS > Test
Use this option to send a DNS query that tests the setup of your DNS servers by looking up the IP address.
See “DNS screen” above on how to set up your servers.
View the result of a test in the Last Query Response field.
• At Query Type, select the method to use for the DNS query, see table below.
• At Query Question, specify the value to be used for the selected query type as explained in the table.
Query Type Selected Query Question to Use
by Host The host name, the URL
by FQDN
The fully-qualified domain name,
my_server.my_domain.com
by IP The IP address of the server.
by MX The Mail Exchange address.