IP address of DNS server

[Guest]

In a peer-to-peer network of
w2kPro-router-w2kPro (router is also an ADSL modem connected to a phone
line)
When I configure the static IP addresses in TCP/IP properties, where do I
get the DNS IP address?
Do I get it from the IPS?
If so and if they provide it dynamically, does that mean that I have to use
DHCP and cannot assing IP addresses in my network manually?

 

[Steven L Umbach]

Read the documentation for your router. You probably can leave the dns servers set to
auto. To find out the current dns server addresses, view the properties of your
router for "wan" configuration which usually lists the current information from your
ISP. --- Steve

 

[aa]

Thanks,

For some reasons which I am trying to find out in this NG, my home network
works only if I set all the IP addresses manually.
But setting IP addresses manually, automatically disables "Obtain DNS Server
address automatically"

I set DNS server address to the value returned by ipconfig when I had
"Obtain DNS Server address automatically" (incedentally it happened to be
192.168.0.1 ( my roouter address) and 194.98.0.1

And this works. Now my ISP tells me that they allocate the DNS adresses
dynamically.

Does it mean that I do not use DNS adresses offered by my ISP, but am using
some other address?

Is it correct to think that I can indicate any known DNS server IP address ?

 

[robert]

if your machine connects to the ISP's network and they have DHCP enabled
then you need to setup your machine to get all the settings from them
including the DNS.

 

[Steven L Umbach]

Yeah. I forgot that a static IP address disables auto for dns. DHCP should work for
you from your router. It may help to try /ipconfig release and then ipconfig /renew
to see if you get a proper IP configuration from the DHCP device. If the assigned IP
address starts with 169.254.xxx.xxx then you are getting a self assigned IP address
as described in the KB link below which indicates a problem accessing the DHCP
server/router. Make sure that you have any personal firewalls disabled when your
computers are on your internal lan.

http://support.microsoft.com/default.aspx?scid=kb;en-us;255836

You can enter the actual IP addresses for your ISP dns servers or use 192.168..0.1 as
you describe which is your router address which acts like a "dns proxy" that handles
dns requests sent to it based on the dns server IP addresses it has configured from
your ISP. I don't know if you can use any dns server as it is possible for someone to
filter traffic to their dns server to accept requests from only certain IP address
ranges. --- Steve

 

[Guest]

Which means I have to set TCP/IP properties to obtain DNS server address
automatically, which means that I have to abandon static addresses and set
IP addresse obtained automatically?

If so I still do not understand that the static DNS server adresses is still
working

If I repeat a question - If I indicate a know DNS server address - can I get
away with static DNS address, dispite ISP sets them dynamically?

 

[Guest]

Steven, As we found out with you in another thread "network name is no
longer available", my network does not work with DHCP and you persuaded me
to move from names to IP addresses and this worked. Obviosly if I use IP
addresses instead of names, say in drive mapping, the IP addresses have to
be static, should not they?
Now you are suggesting me go back to DHCP and try ipconfig release -I have
already been trough this time ago and it did not help.

Regarding the second part of your comments - do you mean that if DNS server
address is set to my router address, the router will handle dynamic DNS
addresses from my ISP - is this is what you mean, then it perfectly fits
into what I am observing

 

[Steven L Umbach]

Since you seem to have some sort of currently unresolveableproblem with
geting IP addresses from dhcp, then yes stay with static IP addresses and
mappings and yes using your gateway address for dns should work fine as the
router will take care of dns name resolution and keeping the dns server IP
addresses correct from your ISP. --- Steve

 

[robert]

if u enter a valid ip u will be able to connect to the internet
if u enter a valid DNS ip u will be able to resolve FQDN

but if your isp is using a DHCP server then they could assign that ip to
another user and that would cause problems.

 

[aa]

if your isp is using a DHCP server then they could assign that ip to

another user and that would cause problems.

Are you saying that a DNS Server is also assigned its IP address
dynamically, and the address which is valid now will not be valid a moment
later? I thought that DNS server are static things in the Internet and thier
IP addresses are assigned centrally.
Are there DNS servers whose address are static and dio not change?

 

[robert]

no what im saying is that your ip is dynamic, unless u'r ISP allows static
ip's.
if they dont and u assign your machien a static ip, then u will not be able
to browse the internet at all if their DHCP server assigns the same ip to
another client.
DNS servers use static ips, so that wont change

 

[Guest]

This is strange.
I asked my ISP for a DNS address and they assured me that they have assigned
dynamically.
I have it static in my TCP/IP properties and it still works - how would you
comment on this?