NTL Broadband Problem and IP Addresses

zaz_fan · 30-01-2006, 23:25

My Ntl broadband has been playing up for the last couple of weeks. During the day I get no service but after midnight it runs fine.

I have rung NTL twice now and both times they have said its my computer and not their end.

When I checked my IP address when it wasn't working it said that it began 169.**.**.** which the bloke from Banaglore said was not an NTL recognised IP address.

Now my NTL is working (it's after midnight) my IP address is 81.**.**.**.

Why is my IP address changing at what looks like set times? Is it anything to do with the maintanence work going on in my area (Portsmouth)?

NTl have told me to get my computer checked out in, especially the Ethernet NIC Card. Are they talking out of their behinds?

Hope someone can help.

I'm on 2mb broadband through modem ethernet. Think its the 250 box.

Cheers

zaz

**Paul** · 30-01-2006, 23:31

A 169 address is what you get when you computers DHCP request is not answered by the modem. Are you plugged directly into the modem, do you have any firewall software running ? If you reboot the modem or the pc during the day, do you then get connected ?

zaz_fan · 31-01-2006, 15:34

Quote:

Originally Posted by Paul M

A 169 address is what you get when you computers DHCP request is not answered by the modem. Are you plugged directly into the modem, do you have any firewall software running ? If you reboot the modem or the pc during the day, do you then get connected ?

The computer is directly plugged into the modem via ethernet. Don't have a router or anything.

Have firewall built into Norton Antivirus.

Seems to be working fine at moment tho but am waiting for it to go wrong AGAIN!!!

Paul K · 31-01-2006, 15:42

Have you checked your firewall logs in case you are blocking data from being sent to the DHCP server etc?

zaz_fan · 31-01-2006, 23:03

Quote:

Originally Posted by Paul

Have you checked your firewall logs in case you are blocking data from being sent to the DHCP server etc?

Looked at Norton and doesn't look like blocking DHCP.

Just seems strange that internet works fine after midnight.

grubbymitts · 01-02-2006, 11:19

go into run on the Start Menu, type command.com, then when you get a C: prompt type ipconfig /release press enter wait a couple of minutes and type ipconfig /renew

That should release the 169 ip and force windows to look for another IP address. If this doesn't work, turn off the pc, turn off the modem. Walk away from the pc (have a cup of tea). Turn on the modem, twiddle thumbs for three or four minutes, then boot up the pc.

If that doesn't work then I'm flummoxed.

hammered · 01-02-2006, 12:00

Sounds like you have a dodgy network cable that has a break somewhere inside. Try changing the cable first, see how it goes over a few days. If it's still the same try a replacement NIC (Network card). Chances are it'll either be your firewall blocking the requests (as previously stated) or it'll be a hardware (cable or NIC) fault...

tomjleeds · 01-02-2006, 13:10

I remember this happening to a friend of mine a few months ago. I tried every which way to sort it but in the end the only thing which seemed to work was a new NIC

zaz_fan · 01-02-2006, 15:55

Looks like it is probabky the NIC card. The cable modem 'appears' to be working fine on my sister's laptop.

My only confusion is that the modem/cable/NIC works fine after 12pm

**Chris** · 01-02-2006, 15:58

Quote:

Originally Posted by zaz_fan

Looks like it is probabky the NIC card. The cable modem 'appears' to be working fine on my sister's laptop.

My only confusion is that the modem/cable/NIC works fine after 12pm

Perhaps by 12pm you have become frustrated enough to kick it, making the loose wires touch and 'repairing' it temporarily? Or maybe by about midnight your PC has been on long enough that the whole lot has warmed up, moved a bit, and forced a bad connection back together? Stranger things have happened.

KevAmiga · 01-02-2006, 16:09

Wait .... dont blame the NIC just yet.

Have you read the 169IP check i posted?

zaz_fan · 01-02-2006, 16:24

Quote:

Originally Posted by KevAmiga

Wait .... dont blame the NIC just yet.

Have you read the 169IP check i posted?

That was very confusing as well. The only time i seemed to get a 169 IP address was when I phoned NTL and they got me messing around with my modem (turning off at mains, rebooting computer etc)

I've got a normal IP address at the moment and the internet just stops working after a short while...very frustrating.

---------- Post added at 17:24 ---------- Previous post was at 17:24 ----------

Quote:

Originally Posted by KevAmiga

Wait .... dont blame the NIC just yet.

Have you read the 169IP check i posted?

KevAmiga · 01-02-2006, 18:13

Ok do this.

When it goes offline, power down the modem. Remove coax, power up modem.

Do you get an IP starting with 192 (Assigned by DHCP?)

zaz_fan · 01-02-2006, 18:32

Quote:

Originally Posted by KevAmiga

Ok do this.

When it goes offline, power down the modem. Remove coax, power up modem.

Do you get an IP starting with 192 (Assigned by DHCP?)

Cheers for the tip....unfortunately sister got bit over excited and went out and bought new Nic Card. Main computer is now in bits!!!

Will give you update when computer back together. If new NIC card doesnt work will try your tip.

**Chris** · 02-02-2006, 08:53

Quote:

Originally Posted by zaz_fan

Cheers for the tip....unfortunately sister got bit over excited and went out and bought new Nic Card. Main computer is now in bits!!!

Will give you update when computer back together. If new NIC card doesnt work will try your tip.

Sheeesh, give a woman a slim excuse to go shopping ...

Didn't think it extended to little bits of computer hardware though.

Is that my coat?