Sign in with
Sign up | Sign in
Your question
Solved

Ethernet networking (pre-wired house) works for some device but not computers?

Tags:
  • Ethernet Card
  • Computers
  • Networking
  • Devices
Last response: in Networking
Share
June 5, 2013 11:00:13 AM

Hi,

We recently moved in to a house with pre-wired ethernet connections. So there is at least one cat5e jack in every room. I connected my internet modem with the rooms by using a TPlink Switch (24 ports).

So I noticed for some of the ports, it works for routers and VOIP devices, so apparently internet is working and the connection is good, but when I connect my laptop/desktop to the same port, with the same ethernet cable, it says limited connectivity (with an exclamation mark on the network icon). I don't quite understand why it would work for some device but not my computers?

I could have used wireless but I really wanted ethernet connection to work for my computers - that is why I paid for pre-wiring the whole house after all.

Thanks for your input in advance.

More about : ethernet networking pre wired house works device computers

June 5, 2013 11:06:31 AM

The ports are only wired to allow 10 megabit connection by the sound of it.
m
0
l
June 5, 2013 12:04:34 PM

mauller07 said:
The ports are only wired to allow 10 megabit connection by the sound of it.


Thanks for quick answering. But isn't cat5e defaulted to 10/100 M? I mean it is possible that the builder messed it up but if there is 10m connection shouldn't my network card picks it up as well?

m
0
l
Related resources
June 5, 2013 9:00:41 PM

So just did a speed test, download speed went up to 75 mbps, so definitely not the set up issue. Anymore thoughts on this?
m
0
l
June 6, 2013 8:39:24 AM

Can you make sure that your laptop is getting an IP address from the DHCP server, where is configured? Or are you statically assigning IP addresses to your devices?
m
0
l
June 6, 2013 1:40:41 PM

NETOPS25 said:
Can you make sure that your laptop is getting an IP address from the DHCP server, where is configured? Or are you statically assigning IP addresses to your devices?


Hi it is getting an IP address but just not able to connect to any sites. I used a switch to connect the internet with all the rooms so I am assuming the switch would automatically assign IP addresses?

m
0
l
June 6, 2013 2:05:25 PM

yangwangbrock said:
NETOPS25 said:
Can you make sure that your laptop is getting an IP address from the DHCP server, where is configured? Or are you statically assigning IP addresses to your devices?


Hi it is getting an IP address but just not able to connect to any sites. I used a switch to connect the internet with all the rooms so I am assuming the switch would automatically assign IP addresses?



I believe that the switch, which is also acting as your router, is also your ccess point? In this case, yes, that device will be handling the DHCP IP assingment because it's meant to be used for homes, meaning an all-in-one equipment.

Can you show me your IP address settings on your PC, as well as the settings on your router?
m
0
l

Best solution

June 6, 2013 7:47:23 PM

yangwangbrock said:
Hi,

We recently moved in to a house with pre-wired ethernet connections. So there is at least one cat5e jack in every room. I connected my internet modem with the rooms by using a TPlink Switch (24 ports).

So I noticed for some of the ports, it works for routers and VOIP devices, so apparently internet is working and the connection is good, but when I connect my laptop/desktop to the same port, with the same ethernet cable, it says limited connectivity (with an exclamation mark on the network icon). I don't quite understand why it would work for some device but not my computers?

I could have used wireless but I really wanted ethernet connection to work for my computers - that is why I paid for pre-wiring the whole house after all.

Thanks for your input in advance.



So you went from a single IP modem to a switch which means it will lock to one MAC and then ignore the rest, maybe that was a router and so anything off that one router is working but the rest are not, the correct solution to this is to insert a ROUTER between the modem and the switch to do NAT for ALL devices. If the cable modem is not a combo modem/router then you need to acquire a router [it can be just wired] and feed the router first.


Once you set the router up, and connect it to the modem, power cycle the modem to clear the MAC address it learned and make it look for a new one, it SHOULD get the routers and then the router should manage everything from there most will run up to 255 private IP addresses off them, so that should get you covered.
Share
June 7, 2013 7:16:33 AM

wacabletech said:
yangwangbrock said:
Hi,

We recently moved in to a house with pre-wired ethernet connections. So there is at least one cat5e jack in every room. I connected my internet modem with the rooms by using a TPlink Switch (24 ports).

So I noticed for some of the ports, it works for routers and VOIP devices, so apparently internet is working and the connection is good, but when I connect my laptop/desktop to the same port, with the same ethernet cable, it says limited connectivity (with an exclamation mark on the network icon). I don't quite understand why it would work for some device but not my computers?

I could have used wireless but I really wanted ethernet connection to work for my computers - that is why I paid for pre-wiring the whole house after all.

Thanks for your input in advance.



So you went from a single IP modem to a switch which means it will lock to one MAC and then ignore the rest, maybe that was a router and so anything off that one router is working but the rest are not, the correct solution to this is to insert a ROUTER between the modem and the switch to do NAT for ALL devices. If the cable modem is not a combo modem/router then you need to acquire a router [it can be just wired] and feed the router first.


Once you set the router up, and connect it to the modem, power cycle the modem to clear the MAC address it learned and make it look for a new one, it SHOULD get the routers and then the router should manage everything from there most will run up to 255 private IP addresses off them, so that should get you covered.


Hi Wacabletech, thanks for your answer. So just to make sure I understand you correctly: you are saying i'm supposed to connect a router (any type, could be just hard wired, does not have to be wireless) to the modem, then from one of the ports to the switch. I should unplug the power for the modem once connected so the MAC address is configured properly then everything should work, correct?

I will give it a try today when I get home. Thanks again for your help.

m
0
l
June 7, 2013 6:34:29 PM

wacabletech said:
yangwangbrock said:
Hi,

We recently moved in to a house with pre-wired ethernet connections. So there is at least one cat5e jack in every room. I connected my internet modem with the rooms by using a TPlink Switch (24 ports).

So I noticed for some of the ports, it works for routers and VOIP devices, so apparently internet is working and the connection is good, but when I connect my laptop/desktop to the same port, with the same ethernet cable, it says limited connectivity (with an exclamation mark on the network icon). I don't quite understand why it would work for some device but not my computers?

I could have used wireless but I really wanted ethernet connection to work for my computers - that is why I paid for pre-wiring the whole house after all.

Thanks for your input in advance.



So you went from a single IP modem to a switch which means it will lock to one MAC and then ignore the rest, maybe that was a router and so anything off that one router is working but the rest are not, the correct solution to this is to insert a ROUTER between the modem and the switch to do NAT for ALL devices. If the cable modem is not a combo modem/router then you need to acquire a router [it can be just wired] and feed the router first.


Once you set the router up, and connect it to the modem, power cycle the modem to clear the MAC address it learned and make it look for a new one, it SHOULD get the routers and then the router should manage everything from there most will run up to 255 private IP addresses off them, so that should get you covered.


That really solved the problem, many thanks man!
m
0
l
!