physical address on TCP/IP

Dell INSPIRON 2200
April 11, 2009 at 10:52:44
Specs: Windows XP
I have two laptops that are connected to same wireless WEP enabled signal. One works fine and the other cannot get online. I config the IP,DEFAULT, GATEWAY, to make sure that both laptops have the same, but when I go into run: IPCONFIG /all on both laptops, they have different PHYISCAL ADDRESSES.
Can this be the cause, if so, how do I cange it??

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April 11, 2009 at 11:24:37
They should have different physical(MAC) addresses. They should also have different IP addresses but the same gateway address, it sounds like you have both laptops with the same ip address.

For example if your routers address is which would also be the latops gateway addresses, then depending on the range of ip addresses the router allows, the laptops could have ip addresses in the range --- the addresses and are reserved for specific tasks. and the is reserved for the router. DHCP should take care of it all though, make sure DHCP is enabled in the router and don't manually allocate ips to the laptops in tcp/ip settings.

And the 255 is also a special(maxiumum if you like) number fr each segment in an ip address.

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April 11, 2009 at 17:11:13
Thanks for your response...but if you read my user name "duh123", that's what I did when I read your reply...
Do u mean that I should put a different ending on the IP address? My working laptop is at, should I put .44 instead?

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April 12, 2009 at 01:16:55
What to do is go to start/run type cmd and type ipconfig /all into the command windows on both laptops and post the results here. This is with both laptops connected to the router.

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Related Solutions

April 12, 2009 at 12:03:09
the config /all for the laptop that is connected:
Ethernet Adapter Wireless Network Connection:
Intel <R> PRO/Wireless 2200 BG Network
Physical Address: 00-12-FO-3D-1A-27
Dhcp enabled-yes
Autoconfiguration IP Enabled- yes
Autoconfiguration IP address-
Subnet Mask-
Default Gateway-
DNS Server-

The one that doesn't connect:
Ethernet Adapter Wireless Network Connection:
Connect-specific-DNS Suffix
Description-Dell Wireless 1370 WLAN Mini PCI Card
Physical Address-00-90-4B-FF-4B-E6
Dhcp enabled-yes
Autoconfiguration IP enabled-yes
" " address-
The rest is the same as above for the exception that the DNS server was written twice

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April 12, 2009 at 12:31:08
Looks ok, try and ping the router with the laptop that doesn't work, so,


Then go into the router settings,
and disable WEP, save the router settings then connect to the signal in wireless connections and see if that helps, also make sure that MAC address filtering is NOT on in the router, maybe it is only allowing the "good" laptop to "pass through". Remeber if disabling WEP works you will have to enable it again at some point.

Finally if you have an ethernet cable handy and a LAN port on the router, connect the cable to port and wait a minute of so and see if you can get online.

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April 12, 2009 at 17:57:43
Did the ping thing and got 100% failure...tried to go the http// and got the "Internet Explorer cannot display the webpage"

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April 12, 2009 at 19:47:38
Assuming you typed the address on your browser the same as you have typed it here you have missed the colon after the HTTP. It should read

See how mine is underlined and yours isn't. That is because mine is a properly constructed URL while yours is missing the colon.


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