 Lex LuthorPremium,Mod
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| MAC Address and IPs I'm trying to help a friend.
Will cloning the MAC Address on a router cause AT&T/BellSouth to assign a new IP address on a home DSL connection?
Also, it's a new connection and the DSL light is not lit. AT&T is saying they are sending a new modem. I'd assume if there's no DSL light lit, it's either the DSL modem or the line link, correct? |
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| Cloning the MAC will do nothing to the connection. That is only useful to systems that filter by MAC, which BS/ATT does not do.
What kind of modem is this friend using? Is it a modem that has worked on the BS/ATT network before? Give a bit more info, like is this a brand new account? Are the telephone devices in this home correctly filtered? ETC... |
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Lex LuthorPremium,Mod
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| reply to Lex Luthor
It's a brand new connection. Trying to find out which router it is. I told her about the filters, so should be good there. I don't think there are any telephone devices in the place anyhow.
Is there any other way to get a new IP address from BellSouth then other than calling them and requesting they change the IP? |
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| reply to Lex Luthor
Lex, you state you have a router, is there a DSL modem in place? Or is this account on an IFITL Line? Unless it is IFITL, the connection needs a DSL modem, the router can be BEHIND the modem, but the modem is required. What we need to find out is.. what kind of modem, and if it is connected without a filter to the correct phone line.
What IP is he getting? 169.xxx.xxx.xxx? |
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Lex LuthorPremium,Mod
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1 edit | No, it's connected correctly. Line jack into DSL modem (no filter), DSL modem into linksys router. No other phones in the apartment. It's a dry loop DSL line.
I'll find out the rest. No DSL light on the modem would seem to indicate a line or modem problem, I'd think.
Also, no way to change IP address without contacting them? |
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Airwolf7Premium
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Franklin, KY
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2 edits | If you have no DSL sync then you have no WAN IP address.
Edit:
»AT&T Southeast Forum FAQ »I have poor synch (or no synch at all) with the DSLAM. What can I do? |
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Lex LuthorPremium,Mod
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1 edit | reply to Lex Luthor
It's a Motorola 2210. The router is actually not connected at all.
Are you sure about the MAC address clone? I recall that working on someone else's BellSouth DSL line with a Westel modem.
Is this some new policy that AT&T has instituted? |
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Airwolf7Premium
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| I just installed two of the AT&T Southeast version Motorola Netopia 2210-02-1006 ADSL2+ routers last week and they seem to be very nice full featured little modems, and I mean little because the thing is barely bigger than my hand and it probably only weighs 8 or 9 ounces.
If the DSL light is not on then refer to the FAQ in my above reply to troubleshoot the problem.
I also found this on the AT&T Southeast Help Center Online website.
Info: Motorola 2210 Status Lights
»help.bellsouth.net/bellsouth/asp···070a82b6 |
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Lex LuthorPremium,Mod
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| reply to Lex Luthor
She has a ticket in with AT&T and a new modem is on the way. DSL light off, looks like maybe it is a bad modem them.
Still have that question regarding changing IP via MAC cloning. Can anyone confirm one way or another? It definitely worked at another house with someone with a Westel. |
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 dot_nullPremium
join:2004-06-28
Kennesaw, GA
1 edit | said by Lex Luthor:Still have that question regarding changing IP via MAC cloning. Can anyone confirm one way or another? It definitely worked at another house with someone with a Westel. Since I removed the static IP option from my account I have gotten a new IP just by closing and re-establishing the PPPoE connection to AT&T on my Westell 6100. It was only with Comcast that I had to clone another MAC address to receive a new IP address.
If she has the static IP option on her account (which AT&T automatically added to my order when I first signed up for DSL a few months ago) and wishes to change her IP, she will have to call AT&T (or go to their website) to remove this feature from her account. |
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Airwolf7Premium
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| reply to Lex Luthor
What IP address are you trying to change?
If you have a dynamic WAN IP address and are talking about the modem's WAN IP address then it will change when you disconnect and reconnect the PPP session, or you can just unplug the modem and plug it back in.
If you have a static WAN IP address then you will have to call in and request that it be changed.
If you are talking about the computers private LAN IP address then change it to whatever you want to. |
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 Doctor OldsI Need A Remedy For What's Ailing Me.Premium,VIP
join:2001-04-19
1970 442 W30
kudos:17 | reply to Lex Luthor
said by Lex Luthor:Still have that question regarding changing IP via MAC cloning. Can anyone confirm one way or another? It definitely worked at another house with someone with a Westel. 100% confirm that Bellsouth/AT&T PPPoE connections do not use MAC ID for network access or user authentication. Cloning the MAC does nothing, but it might block access instead. I don't know of any PPPoE DSL that uses MAC ID. It is primarily a Cable Internet need.
Regards,
Doctor Olds
--
What’s the point of owning a supercar if you can’t scare yourself stupid from time to time? |
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Doctor OldsI Need A Remedy For What's Ailing Me.Premium,VIP
join:2001-04-19
1970 442 W30
kudos:17 | reply to Lex Luthor
said by Lex Luthor:She has a ticket in with AT&T and a new modem is on the way. DSL light off, looks like maybe it is a bad modem them. With the DSL LED off and being a new setup I'd wager that the DSL is not turned on yet or the user has wiring issues and needs to test for DSL Sync at the NID.
»AT&T Southeast Forum FAQ »How to check modem stats, synch rates & speeds from test jack at the NID.
With no DSL LED, there is no WAN IP possible.
DSL Sync must be obtained before PPPoE can login to the system to begin a request for an IP Address.
--
What’s the point of owning a supercar if you can’t scare yourself stupid from time to time? |
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Lex LuthorPremium,Mod
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| reply to Doctor Olds
said by Doctor Olds:said by Lex Luthor:Still have that question regarding changing IP via MAC cloning. Can anyone confirm one way or another? It definitely worked at another house with someone with a Westel. 100% confirm that Bellsouth/AT&T PPPoE connections do not use MAC ID for network access or user authentication. Cloning the MAC does nothing, but it might block access instead. I don't know of any PPPoE DSL that uses MAC ID. It is primarily a Cable Internet need. Regards, Doctor Olds So cloning the MAC address won't work, but unplugging the modem and plugging the modem back in will get a new IP? |
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dot_nullPremium
join:2004-06-28
Kennesaw, GA
1 edit | said by Lex Luthor:said by Doctor Olds:said by Lex Luthor:Still have that question regarding changing IP via MAC cloning. Can anyone confirm one way or another? It definitely worked at another house with someone with a Westel. 100% confirm that Bellsouth/AT&T PPPoE connections do not use MAC ID for network access or user authentication. Cloning the MAC does nothing, but it might block access instead. I don't know of any PPPoE DSL that uses MAC ID. It is primarily a Cable Internet need. Regards, Doctor Olds So cloning the MAC address won't work, but unplugging the modem and plugging the modem back in will get a new IP? Yes, the only exception is that if a static IP is added to the account, it needs to be removed before the user can pull a new IP address.
Sorry, just realized this was directed at Doctor Olds  , but the information should still be correct.  |
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Doctor OldsI Need A Remedy For What's Ailing Me.Premium,VIP
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1970 442 W30
kudos:17 | reply to Lex Luthor
said by Lex Luthor:So cloning the MAC address won't work, but unplugging the modem and plugging the modem back in will get a new IP? The lack of DSL Sync is the current problem. MAC ID isn't involved. There is no WAN side IP address in use when there is no DSL Sync. You have to have the DSL LED on before an IP will be given to the WAN side of the DSL Modem.
When DSL Sync is working then a simple reboot using the built-in Web Interface will gain a new IP if the user is on a Dynamic IP account (there is no need to pull the power). Of course if they are on a Static IP account then the IP never changes.
Regards,
Doctor Olds
--
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Lex LuthorPremium,Mod
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| reply to Lex Luthor
Yes, 2 separate questions, I know.
I think I understand the IP changing now. Reboot modem, new IP.
Ticket open with AT&T, new modem on the way, if that doesn't fix it, I'm sure they'll know what to do next. I'm almost sure it's nothing from the modem on in at this point. |
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Doctor OldsI Need A Remedy For What's Ailing Me.Premium,VIP
join:2001-04-19
1970 442 W30
kudos:17 | They really should take the DSL Modem with a power cord outside to see if there is DSL Sync at the NID test jack. While bad modems right out of the box do happen from time to time, it is pretty rare.
Regards,
Doctor Olds
--
What’s the point of owning a supercar if you can’t scare yourself stupid from time to time? |
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Airwolf7Premium
join:2004-12-12
Franklin, KY
kudos:1 | reply to Lex Luthor
I have a dumb question and it is probably none of my business, but what the he*l does it matter what IP address that they have? |
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| reply to Lex Luthor
with PPPoE you may get a different IP address when you reboot the modem, unless you have a static IP address, but you may not. The IP's are in a pool at the athentication server, and assigned at login (I am pretty sure, if that is in fact incorrect someone correct please).
Has this modem ever worked on a Bell South ATT connection? I ask because the VCI/VPI could be incorrectly set if not. If they are shipping a new modem, the account may not be provisioned. |
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