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Mac address
Hi,been having disconnection probs after a few hours online...told my mac being 00.00.00..... etc... is a problem..and it does look like that ..!! how do i register it to stop the disconnection?
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Re: Mac address
hi and :welcome: to the site , who told you your mac address is 00.0.0.0.0.0.. etc ???????? :)
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Re: Mac address
Could be a problem with your Network card, (assuming XP) if you goto Start->run and type cmd - you should get a DOS window open up, if you then type ipconfig /all - can you tell us what it says for your MAC address? It will be labeled as Physical address and will look something like 00-00-00-00-00-00 assuming that it is all zero's otherwise it may say something like 6F-30-21-D3-E1-30.
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Re: Mac address
Thats what i did to find out. IPconfig/all.....my physical address has all zeros.
I'm using 98 as my o/s. Thanks. |
Re: Mac address
OK,
Sometimes you can set your MAC address in your Drivers, its rare, but you can do it. Im struggling to remember how 98 works, but if you can go into the properties for your network card and see if there is an option to set the MAC address somewhere. If not - i would assume your card is faulty and pick up a new one - they are only about a tenner anyway. I had this once, when a staple managed to get into my case somehow and get itself stuck on a lable that was on the back of my Network card, which just so happened to allow it to short two pins that prevented my newtork card from having a MAC address - and it showed up as all zeros too - but thats my luck for you - the chances of that happening are only high if they are related to me. :D |
Re: Mac address
I'm not convince my board is faulty...its on-board and was fine until the speed upgrade....
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Re: Mac address
this is what your PC is reporting as the physical address of your nic. what has this to do with ntl's speed upgrades?
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Re: Mac address
I don't know,I've had ntl for two year and NEVER had to reboot until the recent upgrade....now i get two-three hours online....seems very co-incidental.
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Re: Mac address
Well,
Your MAC address is defined by your network card - NTL can do nothing about that address or change it. |
Mac address
Hi,
just done a fresh install of xp pro......when i do ipconfig/all my physical address is showing as 00:00:00:00:00:00.! I'm sure its supposed to show my mac address which is on the bottom of my ntl modem. I registered without using thr broadjump cd, and the instructions said i'd need this address but iwas never asked for it! My connection drops every three hours, please help! |
Re: Mac address
I think the MAC address is a red herring, though I'm not sure why it is showing as all zeroes (are you using USB?). ipconfig should show the MAC address of the network card in your PC, not that of the modem. If it was a MAC address issue, I would not expect you to get any connection. Maybe one of the NTL people can help?
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Re: Mac address
Try typing winipcfg into the run box from the start button and see what MAC address that gives. Make sure that you select the correct interface adaptor and "more info".
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Re: Mac address
Hi again all, thanks for the help so far. When i do ipconfig/all it has a list of info....i only have one network card and its onboard. Its listed as a pci900 adapter or something along those lines.....my ip address is shown as a group of numbers(not just zeros and not starting with 169), a submask is shown, and the physical address is shown as 00:00:00:00:00:00. Can someone confirm if this is correct or not.?
Thanks again. |
Re: Mac address
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Are there any newer drivers/BIOS for your Mobo? Can you buy a cheap NIC from PCWorld/Maplins to try? |
Re: Mac address
I have a 'valid' ip address...it DOES NOT start with 169...but my mac address is 00:00 etc..... can any one help me?
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Re: Mac address
Give us the first part of your IP - i.e. 192.168.x.x - but your MAC should NOT be 00:00:00:00:00:00 - please answer the questions above - have you installed your latest drivers for your MOBO?
Also, have you had a look in your BIOS for network card settings if it is onboard? What type of MOBO is it? Nforce etc... Is it a normal ethernet interface that you are using that shows MAC as all 0's or are you USB to a cable modem? Please be as specific as possible. |
Re: Mac address
yes, sorry i'm not helping by not answering questions. I'm at work so i can't check everything right now but info so far.
Asrock K7S8X board. I actually have a connection but it drops off. I've just installed xp and not tried the drivers from there website yet although i do have drivers installed from the disk provided by asrock. Its an onboard ethernet SiS900 adapter connected directly to my ambit modem. It's Not USB. I haven't looked at my bios yet..what should i be looking for? |
Re: Mac address
Just checked the manual for your MOBO here, http://www.asrock.com/Drivers/Manual...S8X_UM_v10.pdf, and it dosent give you an option to change or set the MAC address so its not a BIOS issue.
I dont know why you have this problem, it shouldnt be that your MAC address is all zeos and im frankly amazed that you have a connection to the internet at all. I doubt drivers will fix it as you have never had to set the driver before, sooo i can only assume you have a faulty NIC. Sorry |
Re: Mac address
Oh! I'm not very happy about that. the board is just out of warranty.....is it possible that a connection inside could be a problem, some sort of short or a jumper dropped off or soemthing...i'll have to have a look tonight.
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Re: Mac address
A short is a possibility - also if there is a lot of dust - give it a good vac as well as that can lead to shorts too.
I still dont understand how you get a connection at all though? Does the network light go out on the back of your case when the connection dies? |
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Re: Mac address
A MAC address is supposed to be a unique HARDWARE based serial number of your network card. It consists of 12 digits usually seperated by dots. eg: A0.12.23.34.45.56. You cannot change the physical address of this card, it is possible however, to spoof (Disguise) the MAC address, but this is another story.
It would seem however that MAC address is a red herring as has been stated. XP appears unable to detect the MAC address. If you are getting a DHCP server assisgned "Valid" IP address then the mechanism is working (Simply that XP is unwilling to show it). The negotiation process for an IP is pretty straight forward In basic terms, Your PC is setup for DHCP client, when you power on it sends a broadcast out on to the network and a DHCP server should respond, it then assigns you an IP address that is then linked (Virtually) to your MAC address. hey presto you have an IP address. You are leased the IP address only, after a certain time the IP address can be renegotiated for or the DHCP server releases it to be used by somebody else. If your connection is dropping and you keep the same IP address when it restarts, then I suspect that it is not the DHCP negotiation process but something external, cables, cable service, something overheating, PC, software etc. If you are losing the IP address then it may be that your service is physically stopping OR your lease has run out and is unable to renegotiate with the DHCP server to keep the existing address. |
Re: Mac address
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http://www.microsoft.com/windows2000...wntipcfg-o.asp |
Re: Mac address
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As noted earlier, it is possible to 'spoof' the MAC address on some, if not all, cards (e.g. - on Windows 2000 at least - Network Connections, right-click on connection, select card properties, advanced, 'locally-administered address'). Could it be that a virus or some such has changed this 'software' address? |
Re: Mac address
I find it hard to believe it to be a virus, but i don't disagree 100% with you. It is screwing up my machine a bit. Its a fresh install on a formated drive. I used a nuke program to completely wipe th HDD, i had to partition it and format it before use. I don't think a virus can survive that (can it?). I'm going to have a look in the bios, and also 'control panel, network connections, status and properties' to see if the address is showing up there. If it is i would guess its a software problem. If its not showing there (which i bet it isn't!) i guess its a hardware fault. I've got a seperate PCI 10/100 card i can plug in and install. I'll see if thats any better.
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Re: Mac address
Hi,
right, i opened my pc and loosened the board off. Let it get comfortable and fastened it back down. Took the other side off to check for shorts but it was fine. I then reset the bios and rebooted. HEY PRESTO,!!! Found a ethernet controller and started searching for something.....didn't find anything after a while so i shutdown, reset modem,,,let that settle and then rebooted.GOT my new ip and i seems to be hunky doray!!!! THANKS EVERYONE FOR THERE IDEAS!!! I appreciate all of the help guys(and gals)! |
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