Domain Name Account (DNS)
Written on 10:25 by Ahmet Emir
resolves hostnames—specifically, Internet names, such as
www.routersim.com
. You don’t accept to use DNS; you can aloof blazon in the IP abode of any
device you appetite to acquaint with. An IP abode identifies hosts on a arrangement and the
Internet as well. However, DNS was advised to accomplish our lives easier. Think about this:
What would appear if you capital to move your web folio to a altered account provider?
The IP abode would change and no one would apperceive what the new one was. DNS allows
you to use a area name to specify an IP address. You can change the IP abode as often
as you appetite and no one will apperceive the difference.
DNS is acclimated to boldness a
fully able area name (FQDN)
—for example,
www.lammle
.com
or
todd.lammle.com
. An FQDN is a bureaucracy that can logically locate a arrangement based on
its area identifier.
If you appetite to boldness the name
todd
, you either charge blazon in the FQDN of
todd.lammle
.com
or accept a accessory such as a PC or router add the suffix for you. For example, on a Cisco
router, you can use the command
ip
domain-name
lammle.com
to adjoin anniversary appeal with
the
lammle.com
domain. If you don’t do that, you’ll accept to blazon in the FQDN to get DNS to
resolve the name.
An important affair to bethink about DNS is that if you can ping a device
with an IP abode but cannot use its FQDN, again you ability accept some type
of DNS agreement failure.
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