NetBios Vs. FQDN

[Sam]

Why would some of my servers respond to NetBios names while other will not
respond to anything but their FQDN? The servers are all in the smae domain
etc....

Thanks - Sean

 

[Ace Fekay [MVP]]

In

Why would some of my servers respond to NetBios names while other
will not respond to anything but their FQDN? The servers are all in
the smae domain etc....

Thanks - Sean

Too broad of a question. That depends on the resolution method, what name
you are using to connect to, whether that record exists, how you are
connecting such as pings, UNCs, nslookups, etc.

NetBIOS is basically the computer name. That uses NetBIOS resolution methods
from lmhosts files, broadcasts and WINS. FQDN uses hosts files and DNS. So
it really depends on the machine's IP settings, whether the name is in DNS
or not, whether you are using WINS and if the record is in WINS or not, etc.

Too much to list without knowing EXACTLY what you are talking about and
whether the record exists or not, and your ipconfig /all if using your own
DNS, the ISPs, if using WINS......

Provide an UNEDITED ipconfig /all from the machine you are communicating
from and the machine you are communicating to, as well as how you are
communicating, and what name you are using and whether that record exists in
WINS, DNS, or a local hosts or lmhosts file.


--
Regards,
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT,
MVP Microsoft MVP - Directory Services
Microsoft Certified Trainer

For urgent issues, you may want to contact Microsoft PSS directly. Please
check http://support.microsoft.com for regional support phone numbers.

Infinite Diversities in Infinite Combinations

 

[Ace Fekay [MVP]]

In Ace Fekay [MVP] <[email protected]> typed:

Also keep in mind, 2000 and newer uses hostname lookup first (DNS, hosts
file) and if it doesn't work, then it uses NetBIOS (WINS, lmhosts &
broadcasts). Hostname resolution also depends on what DNS server is used and
what the search suffix is set to and whether the search suffix zone exists
in DNS.

Ace

 

[Herb Martin]

Why would some of my servers respond to NetBios names while other will not
respond to anything but their FQDN? The servers are all in the smae
domain etc....

Because the NetBIOS name resolution was working but the DNS
is broken.

NetBIOS works by Broadcast or by talking to a WINS Server if
you have implement them.

DNS uses the Hosts file, then the DNS server.

Both methods, however, can use the other as a fall back if the
'prime' name resolution (dependent on application etc) fails to
find an answer.

DNS does this by default, NetBIOS has a check box in the IP
Advance->WINS settings.

You internal DNS Servers must be the ONLY ones used by
your internal DNS Clients.