DNS unable to resolve ip address....

[cauzomb]

Try manually setting your dns servers in your router to 4.2.2.1, 4.2.2.2, 4.2.2.3

[opnight]

just did that, ill let u no if my problem still occurs

Thanx

[opnight]

hmm i still keep experiencing random disconnections. the internet light on my router goes off. only thing i can think of now is that i might need a new router...unless any of you guys know anything else to try.??

[TurcoLoco]

hmm i still keep experiencing random disconnections. the internet light on my router goes off. only thing i can think of now is that i might need a new router...unless any of you guys know anything else to try.??

I am assuming that you have either a DSL or Cable service, meaning you have a highspeed modem which connects to a router?

For troubleshooting purposes, skip the router and connect it directly to the system that you are experiecing disconnections on. Then see if the problems still occur. If Yes, the problem is likely to be with your highspeed modem and/or your ISP (have your ISP check the signal from their servers to your modem to confirm that it is not an issue they need to fix at their end).

If the problem doesn't occur when you bypass the router then....kinda obvious at that point as to what the culprit is...

PS. If you have messed around with the router settings, I suggest you reset your router first to see if that helped. Also, if it had been more than 6 months since you last checked for a firmware update for the router, I'd say look into that as well.

[opnight]

i have DSL connection yea. my router and modem are built as one. i think ill get my dad to ring up my ISP...

ive attached the exact problem below so take a look please. oh yea my firmware is up to date also.

[TurcoLoco]

i have DSL connection yea. my router and modem are built as one. i think ill get my dad to ring up my ISP...

ive attached the exact problem below so take a look please. oh yea my firmware is up to date also.

Ok, then the problem is likely to be with the Modem/Router combo unit.

Since it is multiple applications that are having the problem, it is obvious that the issue is with the network connection in general.

Here is a basic way to troubleshoot network connection issues:

Start > Run > cmd_/k_ipconfig_/all > OK (note: each underscore is a single space)

I simply ping each one of the following until I find where it times out:

1. TCP Software. . . . . . . . . . : 127.0.0.1
^ This confirms, TCP protocol is working properly.

2. IP Address. . . . . . . . . . . . : Whatever yours is
^ This confirms, Your machine is getting assigned an IP.

~~~ Up to this point you confirmed the software based network functionality on the machine, after this point you will actually be reaching out via Network Interface Card (NIC) to use the connection you have ~~~

3. Default Gateway . . . . . . . . . : Whatever yours is
^ This confirms, Your PC can communicate with the Gateway. If a Router is used, this'd be the IP address of the Router. If not, then generally the same as the DNS IP which is received by your Cable/DSL modem. If there is a router and it can not be ping'ed then it is likely the PC can not communicate with the router:
~ Is the PC properly connected to the router?
~ Does the light in the back of the router illuminate green indicating a valid connection?
~ If there is one, does the light on the NIC illuminate?
- If it is all good up to this point, yet Router/Gateway but you still can't ping the router then either a software (corrupt/misbehaving application or an undesirable, malicious code) is preventing the connection OR NIC is likely to be BAD.
Corrupt/Misbehaving software: a legit firewall or Internet Security type utility is either damaged or acting up.
Undesirable/malicious code: virus, worm type program, if already cleanup then likely a collateral damage, further troubleshooting will be needed.


~ Are there any other machines connected to the same router, if so can they connect to it?

4. DNS Servers . . . . . . . . . . . : Whatever yours is
^ This confirms, connection to the given DNS servers. If there is a separate router present and you are not able to ping the DNS servers, then that would mean the router is not able to communicate with the modem:
~ Is the router properly connected to the modem?
~ Is the Modem powered on with all applicable green lights illuminate?
~ Is the modem properly connected to receive network signals from ISP?

Other possibilities: the cable/DSL modem is not configured properly (reset might help) or it is not working (Power off both the modem and the router and also reset router).

~TL

[opnight]

i did that cmd...

my ip address and Default Gateway are the same. i cannot see a TCP address tho. my pc is correctly connected to the router and the cables are in properly oh there is no light on the back of my router but the USB light on the front is light up and there are no other machines hooked up to the router....u said about pinging the router how do i do this ??

[TurcoLoco]

i did that cmd...

my ip address and Default Gateway are the same. i cannot see a TCP address tho. my pc is correctly connected to the router and the cables are in properly oh there is no light on the back of my router but the USB light on the front is light up and there are no other machines hooked up to the router....u said about pinging the router how do i do this ??

Your PC's IP address and Router's/Gateway's IP address should not be the same, if it is there is something wrong right there.

So, it sounds like you connected the router/modem unit to your PC via USB which I don't know much about. I mainly deal with RJ-45 (CAT-5/5e/6) type wired Ethernet connections, however the ping test still applies:

Also see the attached screenshot to check on the TCP/IP Protocol properties window to make sure your settings are the same. If the modem is also acting as a router that means the router is your DHCP and DNS IP address is going to be whatever the IP address(es) of your ISP's DNS server(s) is/are. Generally there should be 2 DNS server IPs listed but only one used and the other is used if the first one doesn't respond to calls made by your PCs.
When DHCP is used then you MUST not manually configure the IP address for your machine, it should be set to 'automatic' as seen in the screenshot #1.

TCP/IP Protocol IP is same for everyone, it is always 127.0.0.1
pinging that IP pretty much tells you the TCP/IP protocol is functioning at a software level (it doesn't actually use your NIC or your connection).

Pinging your gateway is the key step which is tests the actual connection between your system (NIC) and Gateway (Router's internal port where the cable coming from your machine connects to).
This is how you ping an IP address:

Start > Run > cmd > OK
Then type the following: ping_xxx.xxx.xxx.xxx

Note: Replace x with the gateway address you obtain by running ipconfig command as explained previously, ok?

See the attached screenshot #2 for an example of obtaining and pinging the gateway.

~TL

[opnight]

yes my router is connected via USB, DHCP is enabled. i pinged TCP/IP Protocol IP and i sent 4 and recieved 4, but the ip ping didnt work, but all the others work.

[TurcoLoco]

That IP config was run for Local Area Connection #3, was that the right one?

Besides the 'Media State' showinf Media Disconnected, the only odd thing I could notice was the DNS IP addresses.
Though as I mentioned before I am not too familiar with USB based LAN connections, the IP addresses listed for the DNS servers didn't look right.
Are the settings for the Advanced TCP/IP Settings window same as the ones on the screenshot #1? ON the Advanced TCP/IP Settings section click on the DNS tab and check that page too.

You should not have any IP address entered manually for your machine, gateway or even the DNS servers. IF everything was really set to automatic then you could try running:
Start > Run > cmd > OK and ipconfig /flushdns (ENTER) first then ipconfig /renew (ENTER) afterwards.

Other than these, I would have to let someone who had experience with USB highspeed connections speak up.

~TL