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Old 10-13-2004, 10:58 PM   #1
fng_#1
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Angry Re:comcast internet


I'm a NEWBIE!!

ok I can't make my distro of mandrake connect to the inter net, i have my ip and default gateway, and my host name but I can't make it connect to the internet can someone help with this problem any help at all is welcome

thank you

jimi
 
Old 10-14-2004, 12:58 AM   #2
Skyline
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>> ok I can't make my distro of mandrake connect to the inter net, i have my ip and default gateway, and my host name but I can't make it connect to the internet can someone help with this problem any help at all is welcome <<

Are you connecting via a NIC and Router? - what equipment are you trying to connect with - if it's a nic, then is the nic recognised in the MCC ? - more info needed first...... - in addition to your static ip and the gateway ip, you'd typically include a mask and your DNS addresses.

Last edited by Skyline; 10-14-2004 at 01:02 AM.
 
Old 10-15-2004, 05:41 AM   #3
opjose
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If you are directly connecting to the Comcast cable modem do this:


1) Set up your interface to utilize DHCP
2) Make sure that the interface is brought up at boot time.
2) Give your machine a hostname via the wizards.


Now, shutdown your computer

Unplug it from the wall outlet.

Unplug the Comcast modem as well.

With your computer unplugged press it's power button to discharge anything remaining as you need a cold boot.

Plug your computer back in, but do not turn it on.

Plug your cable modem in. It will begin it's startup sequence.

Now turn on your computer and start up Linux.

Timing is sort of crucial.

The comcast cable modem checks to see which NIC is connected to it via a request for a MAC address.

If the NIC is "alive" but without an IP, comcast will allocate a new IP address for the nic on the Comcast DHCP/DNS servers.

Then when the NIC requests the IP via DHCP, it is given to it.

So the NIC must be powered up, but most not request an IP UNTIL the cable modem is up and on line.


Wait too long and the cable modem may believe that you will be trying to connect with your old prior machine or OS.

Anyway, it sounds sort of crazy, but it works.

I've done this many times.
 
Old 11-11-2004, 11:04 AM   #4
usererror
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Registered: Sep 2004
Location: Boston
Distribution: gentoo, suse, slackware.
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In case this question is still open!
http://web.brandeis.edu/pages/view/B...ternet#Details

Good Luck,

-mike
 
Old 11-11-2004, 06:18 PM   #5
opjose
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Why is this "still open"?

As reported on the link you gave Comcast has indeed modified their IP registration process so that you CAN indeed change the machines.

However it's not quite as easy as unplugging one and plugging in the other.

During the modem's startup it determines which "foreign" MAC is connected to the LAN interface on it.

It then passes this information back up to the head-end which registers the MAC as an authorized NIC.

That is why the modem must be cold booted, to force it to authorize the new NIC, if you switch to Linux.

Once done Linux can obtain an IP via Comcast w/o problems, provided it is the only machine on the subnet (unless your modem itself is seperately "authorized" for multiple machines, more $$$).

I went thru this being on the original Comcast beta programs, which included the older COM21 modems as well as the newer RCA units.

BTW: All of this also applies to Windows and Comcast.
 
Old 11-12-2004, 10:54 AM   #6
usererror
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opjose!

A long time Speakeasy customer, I have decided to cut on costs, and gave a shot with Comcast.
I posted it for people who want to set up Linux box, and register on Comcast network. Well, yesterday night I succeed. The registration process went smoothly. Even, I was able to swap from Linux box to wireless router and back, successfully. Currently wireless router is sitting behind the Linux box. So far, I am the happy camper.

-mike

P.S. I don't want to say any bad words to Speakeay folks, though! Speakeasy rocks! And I'm loyal to them. I guess it's more for dslreports.com than for linuxquestions discussion group.
 
Old 11-12-2004, 01:53 PM   #7
opjose
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Yeah the Speakeasy installations are almost trivially easy.

I couldn't believe that they sent a friend a modem, told him to plug it in to the phone line, and he was up and running.
 
  


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