Networking :: Trouble connecting to network via DHCP
Also, if you ask your network admins nicely, they might look at the logs
for their dhcp server to see if they are responding to your mac address when you
run pump. If they do not see any requests with your mac address, then the
problem is at your end.
And the plot thickens....
I went and asked nicely when they weren't busy, and now I am even more confused.
First off: The network is definetly open. Anyone can plug in and get on the internet. No configuration / login necessary
So I plugged in at the tech office, on a port usually used by one of the guys there. I was ready to show them that it wouldn't connect. SUPRISE! It worked. I ran netcardconfig, and everything was happy. I was able to get on the internet and check email.
I asked if anything had changed in the past week, and they said no. One of the tech's went then with me to the port I had tried to access before (from when I couldn't get on)
I tried to get on the network and it wouldn't work. Same error as before. He plugged in with his XP laptop and it worked fine for him.
At this point we were both confused. He said the 'public' port (the one that didn't work for me) used a different switch, but that was the only difference.
I decided that further investigation was needed. I got a friend with an XP laptop, and a friend running Kubuntu and we went around and tested ethernet jacks.
The kubuntu and windows laptop could get on the network at every port we tested. I was only able to get on the network on 'non public' ports.
Just to reiterate: there is no configuration required. My friend with the Kubutnu laptop doesn't even attend the University.
So is there a problem with the netcardconfig script?
I tried it with the live cd but it made no difference.....
This reminds me of a time when I used some restricted gateway...
This was a desktop, with some pci NIC - worked on modems, hubs, routers. However, upon using it on the gateway... (which I think used some cisco switches) it would hardly work at all. It seemed that this particular NIC brand was at fault with the particular switch. So I ended up grabbing some usb NIC, and it all worked out. This happened on windows and linux distros (on the same machine).
If it's only your laptop that's not working - try connecting with another card.
Ok, I was wondering if it was a hardware issue. If I can find something cheap, I'll give it a shot.
-Andrew
Sounds like the combination of your network adapter and that network switch are not working together.
To see what kind of NIC you have, run:
dmesg | grep eth
The MAC address shows that it is made my 3COM.
My laptop has a 3COM 3CXFE575BT pcmcia card (10Mbps), and it fails to connect to my cheap Netgear GS608 switch (10/100/1000) most of the time. After a few reboots, it will finally get a link. That laptop and 3COM pcmcia card ran DSL on an older Netgear 10/100 router for years without any network problems.
A newer kernel module for that network card MAY be able to connect with the switch. You could try a livecd from a different distribution which has a more recent kernel. The latest KNOPPIX CD has a newer kernel.
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