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Ethernet Problem with OSX

B

Brian Chan

macrumors newbie
Original poster
Mar 31, 2008
8
0
Dear guys

I have some problem on setting the ethernet at my office.

At my office, I have to enter the IP address manually with PC orlaptop. It work with any Windows based computer. However, it doesn't seems to work with my Macbook..

What went wrong? I have tried to resrach the detals in the internet but not successfully.

Any solution?

Cheers,
Brian
 
Do you have enter all the TCP/IP information manually? What are you entering in the Sys Prefs for:

Configure:
IP Address:
Subnet Mask:
Router:
DNS Server:

S-
 
Here is what I entered

Configure:
IP Address:192.168.1.10
Subnet Mask:255.255.255.0
Router:192.168.1.152
DNS Server:208.167.231.55


FYI, I can login my office's intrenet but cant able to login to internet. =)
 
Here is what I entered

Configure:
IP Address:192.168.1.10
Subnet Mask:255.255.255.0
Router:192.168.1.152
DNS Server:208.167.231.55


FYI, I can login my office's intrenet but cant able to login to internet. =)
 
>>Also you shouldn't post your IP information so publicly I think.

Generally good advice, but he is using RFC1918 addresses so no real hassle.
 
First some troubleshooting stuff to see where the problem is. Open up a Terminal on the Mac.

Type "netstat -rn". Make a note of the IP address next to the word default. It ought to be the same as the one you've set your router to.

Now type "arp " followed by that address. You should get output similar to the below, which shows that your Mac's ethernet interface is talking to the router.

? (192.168.1.30) at 0:50:e8:2:D9:3F on en1 [ethernet]

If that works, type "cat /etc/resolv.conf" and compare it to the DNS server setting you've set.

If that is correct, type "dig www.google.com" which queries the DNS server. You should get a whole bunch of addresses for www.google.com.

Which of these work?

And one last thing to check, are you sure that IP address you've set isn't already in use on your network.
 
Queso said:
First some troubleshooting stuff to see where the problem is. Open up a Terminal on the Mac.

Type "netstat -rn". Make a note of the IP address next to the word default. It ought to be the same as the one you've set your router to.

Now type "arp " followed by that address. You should get output similar to the below, which shows that your Mac's ethernet interface is talking to the router.

? (192.168.1.30) at 0:50:e8:2:D9:3F on en1 [ethernet]

If that works, type "cat /etc/resolv.conf" and compare it to the DNS server setting you've set.

If that is correct, type "dig www.google.com" which queries the DNS server. You should get a whole bunch of addresses for www.google.com.

Which of these work?

And one last thing to check, are you sure that IP address you've set isn't already in use on your network.
Click to expand...

thanks guy!

Tired the method 1. The IP address shown is not the same that I entered.
 
Here you go.

Picture1.jpg
 
just wanted to read this tomorrow,
hope there is good info as i have a similar problem at my friends house.
 
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