Dell 720N Laptop User Manual


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Network Administration 4-9
PRXQWILOHUHWFPQWGLU?
PYPQWGLUKRVWVPQWGLUKRVWVEDN?
FSHWFKRVWVPQWGLUKRVWV?
XPRXQWPQWGLU?
GRQH?
UPGLUPQWGLU
Substitute the name of each filer in the for filer in... list in place of filer1, filer2, and
so on.
8VLQJ'16
The filer includes DNS client capabilities to query DNS servers for host-name-to-IP-
address and IP-address-to-host-name translation services. With DNS enabled, you no
longer have to update the filers
/etc/hosts
file in the root volume every time you add a
new host to the network. (If you use the default search order or put files before DNS
in the
/etc/nsswitch.conf
file, you still have to update the
/etc/hosts
file if one of its
entries changes before the filer tries to resolve host names.)
NOTE: To prevent naming inconsistencies, Dell recommends that when you enable
DNS, you use only the default /etc/hosts file in the root volume.
Enabling DNS during setup: At
setup
, if you enter
y
in response to the following
prompt,
setup
prompts you for a DNS domain name, as follows:
'R\RXZDQWWRUXQ'16UHVROYHU>Q@
y
3OHDVHHQWHU'16GRPDLQQDPH>@
After you enter a DNS domain name,
setup
prompts you for the IP addresses for up
to three DNS name servers. Based on the IP addresses you enter,
setup
generates
the /etc/resolv.conf file in the root volume. Entries in /etc/resolv.conf file consist of the
word nameserver followed by an IP address, as follows:
QDPHVHUYHULSBDGGUHVV
For details about name server query policies, see the
resolv.conf
(5) man page.
Enabling DNS without using setup: If you didnt start DNS during
setup
, you can
start DNS by performing the following steps:
1. Create a
/etc/resolv.conf
file in the root volume. The file consists of up to three
lines, each specifying a name server host in the following format:
QDPHVHUYHULSBDGGUHVV
For example:
QDPHVHUYHU
QDPHVHUYHU
QDPHVHUYHU
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