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ipconfig : how to configure when two computers hooked to ethernet?When I had problems accessing internet (I have a cable modem to which
two computers are hooked through a splitter), I was asked to do "ipconfig /renew" at the DOS prompt. It sure worked! However, it worked only on one machine -- the one on which the command was issued. Now, if I issue the same command on the second machine, it works, but the first one doesn't. Caught in a trap here... Any ideas on how I can get both machines to work? Is it something like setting the second machine with the same IP address as the one that's on the working machine? How? All help is appreciated! tandon.sour***@gmail.com wrote:
> When I had problems accessing internet (I have a cable modem to which The reason ipconfig /renew worked on one machine and not the other is> two computers are hooked through a splitter), I was asked to do > "ipconfig /renew" at the DOS prompt. It sure worked! However, it > worked only on one machine -- the one on which the command was issued. > > Now, if I issue the same command on the second machine, it works, but > the first one doesn't. Caught in a trap here... > > Any ideas on how I can get both machines to work? Is it something like > setting the second machine with the same IP address as the one that's > on the working machine? How? > > All help is appreciated! that something else is wrong on the one where it didn't work. You need to find out what that is - simply changing the IP address won't do it and you can't have two machines with identical IP addresses on one network anyway. Since we have no information about your machine, your Internet connection, or what changed between the time things worked and the time they didn't, you can't get more specific advice. Start by answering these two questions: The First Question Of Troubleshooting: what changed between the time things worked and the time they didn't? The Second Question of Windows Troubleshooting: what is the malware/virus status of the machine? If you think it is clean, what programs (and versions) did you use to determine this? Be sure the computer is clean: http://www.elephantboycomputers.com/page2.html#Removing_Malware Malke In article <1162642579.464957.270***@f16g2000cwb.googlegroups.com>,
tandon.sour***@gmail.com wrote: >When I had problems accessing internet (I have a cable modem to which Here's what could be happening:>two computers are hooked through a splitter), I was asked to do >"ipconfig /renew" at the DOS prompt. It sure worked! However, it worked >only on one machine -- the one on which the command was issued. > >Now, if I issue the same command on the second machine, it works, but >the first one doesn't. Caught in a trap here... > >Any ideas on how I can get both machines to work? Is it something like >setting the second machine with the same IP address as the one that's >on the working machine? How? > >All help is appreciated! 1. You get one IP address from your cable ISP. 2. The "splitter" device is a network hub or switch, not a broadband router. What is the make and model of the "splitter"? A router can share one IP address between multiple computers and give them all simultaneous Internet access, but a hub or switch can't. If you have a hub or switch, only one computer will be able to connect to the Internet at a time. If that's the case, the best choice is to replace the "splitter" with a home broadband router. Another possibility is to get two IP addresses from your cable ISP, which would probably require an additional monthly fee. If you indeed have a home broadband router, the problem could be that the cable modem is connected to the wrong port on the router. Connect the cable modem to the router's LAN or Internet port, not to one of its LAN ports. -- Best Wishes, Steve Winograd, MS-MVP (Windows Networking) Please post any reply as a follow-up message in the news group for everyone to see. I'm sorry, but I don't answer questions addressed directly to me in E-mail or news groups. Microsoft Most Valuable Professional Program http://mvp.support.microsoft.com Steve Winograd [MVP] wrote:
> In article <1162642579.464957.270***@f16g2000cwb.googlegroups.com>, The two computer were indeed working at the same time in the past with> tandon.sour***@gmail.com wrote: > If > you have a hub or switch, only one computer will be able to connect to > the Internet at a time. > > If that's the case, the best choice is to replace the "splitter" with > a home broadband router. Another possibility is to get two IP > addresses from your cable ISP, which would probably require an > additional monthly fee. > the same cable model through a splitter and without a router. I do not know what changed to cause the problem -- I did not knowingly change anything. I am unable to believe that only one computer can work at a time with one cable modem (I have cox broadband) Even today, both computers work, just not at the same time. tandon.sour***@gmail.com wrote:
Show quoteHide quote > Why mess around with this? Go and buy a router - very inexpensive> Steve Winograd [MVP] wrote: >> In article <1162642579.464957.270***@f16g2000cwb.googlegroups.com>, >> tandon.sour***@gmail.com wrote: >> If >> you have a hub or switch, only one computer will be able to connect >> to the Internet at a time. >> >> If that's the case, the best choice is to replace the "splitter" with >> a home broadband router. Another possibility is to get two IP >> addresses from your cable ISP, which would probably require an >> additional monthly fee. >> > > The two computer were indeed working at the same time in the past with > the same cable model through a splitter and without a router. I do not > know what changed to cause the problem -- I did not knowingly change > anything. I am unable to believe that only one computer can work at a > time with one cable modem (I have cox broadband) > Even today, both computers work, just not at the same time. solution - and you can have multiple computers sharing your cable Internet connection. With most things computer-related, including networking, the simplest and most standard setup is usually the most successful. Malke The fact that this worked in the past, and no longer does, is probably due
to a change by Cox. There was a similar situation with OptOnline (northeast cable provider) where the cable network allowed two connections contrary to their own intended policy, and at a certain point they modified their system to prevent it. Quite a few people (in this area) raised exactly the question you're raising. A router is definitely the correct solution. -- Show quoteHide quote<tandon.sour***@gmail.com> wrote in message news:1162742073.682398.234970@k70g2000cwa.googlegroups.com... > > Steve Winograd [MVP] wrote: >> In article <1162642579.464957.270***@f16g2000cwb.googlegroups.com>, >> tandon.sour***@gmail.com wrote: >> If >> you have a hub or switch, only one computer will be able to connect to >> the Internet at a time. >> >> If that's the case, the best choice is to replace the "splitter" with >> a home broadband router. Another possibility is to get two IP >> addresses from your cable ISP, which would probably require an >> additional monthly fee. >> > > The two computer were indeed working at the same time in the past with > the same cable model through a splitter and without a router. I do not > know what changed to cause the problem -- I did not knowingly change > anything. I am unable to believe that only one computer can work at a > time with one cable modem (I have cox broadband) > Even today, both computers work, just not at the same time. > In article <1162742073.682398.234***@k70g2000cwa.googlegroups.com>,
tandon.sour***@gmail.com wrote: Show quoteHide quote >> If Is this "splitter" a device with three coaxial jacks that lets two TV>> you have a hub or switch, only one computer will be able to connect to >> the Internet at a time. >> >> If that's the case, the best choice is to replace the "splitter" with >> a home broadband router. Another possibility is to get two IP >> addresses from your cable ISP, which would probably require an >> additional monthly fee. >> > >The two computer were indeed working at the same time in the past with >the same cable model through a splitter and without a router. I do not >know what changed to cause the problem -- I did not knowingly change >anything. I am unable to believe that only one computer can work at a >time with one cable modem (I have cox broadband) >Even today, both computers work, just not at the same time. sets connect to the cable? If so, it's not a networking device, and it can only let two computers access the Internet simultaneously if you get two IP addresses from your cable ISP. Perhaps they provided that to you (intentionally or unintentionally) in the past. Most cable ISPs charge an additional monthly fee for a second IP address. -- Best Wishes, Steve Winograd, MS-MVP (Windows Networking) Please post any reply as a follow-up message in the news group for everyone to see. I'm sorry, but I don't answer questions addressed directly to me in E-mail or news groups. Microsoft Most Valuable Professional Program http://mvp.support.microsoft.com Steve,
The splitter is an ethernet splitter. The coaxial cable (as in cable TV) goes into the modem; the output of the cable modem is ethernet cable which goes into the splitter. At the output of the splitter are several ethernet ports, two of which are being used at my home. I am using the "automatically connect to the internet" option on both the computers. The popular wisdom says that you simply have to plug the ethernet cable to the computer for the internet to work, which has worked for me in the past. Ethernet cable splitters have worked great too. But something has changed (was it my spybot that blocked certain changes?). Thanks for your inputs. -Sourabh Steve Winograd [MVP] wrote: Show quoteHide quote > In article <1162742073.682398.234***@k70g2000cwa.googlegroups.com>, > tandon.sour***@gmail.com wrote: > >> If > >> you have a hub or switch, only one computer will be able to connect to > >> the Internet at a time. > >> > >> If that's the case, the best choice is to replace the "splitter" with > >> a home broadband router. Another possibility is to get two IP > >> addresses from your cable ISP, which would probably require an > >> additional monthly fee. > >> > > > >The two computer were indeed working at the same time in the past with > >the same cable model through a splitter and without a router. I do not > >know what changed to cause the problem -- I did not knowingly change > >anything. I am unable to believe that only one computer can work at a > >time with one cable modem (I have cox broadband) > >Even today, both computers work, just not at the same time. > > Is this "splitter" a device with three coaxial jacks that lets two TV > sets connect to the cable? If so, it's not a networking device, and > it can only let two computers access the Internet simultaneously if > you get two IP addresses from your cable ISP. Perhaps they provided > that to you (intentionally or unintentionally) in the past. Most > cable ISPs charge an additional monthly fee for a second IP address. > -- > Best Wishes, > Steve Winograd, MS-MVP (Windows Networking) > > Please post any reply as a follow-up message in the news group > for everyone to see. I'm sorry, but I don't answer questions > addressed directly to me in E-mail or news groups. > > Microsoft Most Valuable Professional Program > http://mvp.support.microsoft.com This link might help - http://tinyurl.com/y54vhm
-- Show quoteHide quote<tandon.sour***@gmail.com> wrote in message news:1162753307.379942.300490@m7g2000cwm.googlegroups.com... > Steve, > The splitter is an ethernet splitter. The coaxial cable (as in cable > TV) goes into the modem; the output of the cable modem is ethernet > cable which goes into the splitter. At the output of the splitter are > several ethernet ports, two of which are being used at my home. > > I am using the "automatically connect to the internet" option on both > the computers. The popular wisdom says that you simply have to plug the > ethernet cable to the computer for the internet to work, which has > worked for me in the past. Ethernet cable splitters have worked great > too. But something has changed (was it my spybot that blocked certain > changes?). > > Thanks for your inputs. > -Sourabh > > > Steve Winograd [MVP] wrote: >> In article <1162742073.682398.234***@k70g2000cwa.googlegroups.com>, >> tandon.sour***@gmail.com wrote: >> >> If >> >> you have a hub or switch, only one computer will be able to connect to >> >> the Internet at a time. >> >> >> >> If that's the case, the best choice is to replace the "splitter" with >> >> a home broadband router. Another possibility is to get two IP >> >> addresses from your cable ISP, which would probably require an >> >> additional monthly fee. >> >> >> > >> >The two computer were indeed working at the same time in the past with >> >the same cable model through a splitter and without a router. I do not >> >know what changed to cause the problem -- I did not knowingly change >> >anything. I am unable to believe that only one computer can work at a >> >time with one cable modem (I have cox broadband) >> >Even today, both computers work, just not at the same time. >> >> Is this "splitter" a device with three coaxial jacks that lets two TV >> sets connect to the cable? If so, it's not a networking device, and >> it can only let two computers access the Internet simultaneously if >> you get two IP addresses from your cable ISP. Perhaps they provided >> that to you (intentionally or unintentionally) in the past. Most >> cable ISPs charge an additional monthly fee for a second IP address. >> -- >> Best Wishes, >> Steve Winograd, MS-MVP (Windows Networking) >> >> Please post any reply as a follow-up message in the news group >> for everyone to see. I'm sorry, but I don't answer questions >> addressed directly to me in E-mail or news groups. >> >> Microsoft Most Valuable Professional Program >> http://mvp.support.microsoft.com > In article <1162753307.379942.300***@m7g2000cwm.googlegroups.com>,
tandon.sour***@gmail.com wrote: >Steve, I'm sorry, but I'm not familiar with anything called an "Ethernet>The splitter is an ethernet splitter. The coaxial cable (as in cable >TV) goes into the modem; the output of the cable modem is ethernet >cable which goes into the splitter. At the output of the splitter are >several ethernet ports, two of which are being used at my home. splitter". What is its make and model number? I assume that it's a network hub or switch. That type of device can only give Internet access to two computers simultaneously if you get two IP addresses from your cable ISP. >I am using the "automatically connect to the internet" option on both It's possible that your cable ISP provided you with two IP addresses>the computers. The popular wisdom says that you simply have to plug the >ethernet cable to the computer for the internet to work, which has >worked for me in the past. Ethernet cable splitters have worked great >too. But something has changed (was it my spybot that blocked certain >changes?). in the past, either intentionally or unintentionally. When one of the computers is connected to the Internet, look at the IP address assigned to that computer's Ethernet connection. If the IP address is NOT in one of these ranges, you would need to get two IP addresses from your cable ISP to get both computers on the Internet simultaneously without a router: 10.0.0.0 - 10.255.255.255 172.16.0.0 - 172.31.255.255 192.168.0.0 - 192.168.255.255 As several of us have said, the most likely solution is to replace the "Ethernet splitter" with a home broadband router. >Thanks for your inputs. You're welcome.>-Sourabh -- Best Wishes, Steve Winograd, MS-MVP (Windows Networking) Please post any reply as a follow-up message in the news group for everyone to see. I'm sorry, but I don't answer questions addressed directly to me in E-mail or news groups. Microsoft Most Valuable Professional Program http://mvp.support.microsoft.com 
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