Re: linux with IP masquerading on RCN

[Derek Atkins <http://www.MIT.EDU/~warlord>]

You might want to try connecting the NIC to another machine to
make sure that it's working...  There are some problems with
certain NE2k clones that I've seen.  Linux appears to recognize
the card, but it wont actually transmit on the network.  I've
seen this behavior with certain NetGear NE2k clones.

So, verify that you have a working card by configuring it with a
static IP and trying to talk to a local network.  If that works then
make sure you are cabled properly to the CM.  Make sure you have the
proper crossover or patch cable.  Beyond that, I have no idea why DHCP
is failing with the CM.  However, I suspect you will find that you
have one of the weird not-quite-working NE2k cards.

-derek

http://dummy.us.eu.org/robert (robert) writes:

> Derek,
> 
> Mark's machine is using an NE2000 compatible.  The ethernet card is being
> recognized and it's been "netconfig"-ed, but hasn't used this ethernet card
> to connect to any other computer.  (ping to itself works.)  When the
> machine tries the "pump", it just sits there and eventually times out.
> None of the lights on the cable modem blink.
> 
> Would it help to try to run a tcpdump during the period when it's hung?
> If not, is there any other way to see if "pump" is properly negotiating an
> IP address with the DHCP server?
> 
> Thanks.
> 
>  > From: "Mark Reimers" <http://www.rcn.com/~mreimers>
>  > Date: Tue, 16 Jan 2001 15:46:24 -0500
>  > 
>  > -----Original Message-----
>  > From: Derek Atkins <http://www.MIT.EDU/~warlord>
>  > To: Mark Reimers <http://www.rcn.com/~mreimers>
>  > Date: Tuesday, January 16, 2001 3:14 PM
>  > 
>  > >"Mark Reimers" <http://www.rcn.com/~mreimers> writes:
>  > >
>  > >> Derek,
>  > >>     thanks for your response. I also discovered the power-cycle issue (by
>  > >> accident ;-)).
>  > >>
>  > >>     Q: what type of NIC are you using?
>  > >>
>  > >> Mark
>  > >
>  > >Um, I'm not sure which NIC is connected to RCN.  IIRC it's either
>  > >an NE2000 clone or a 3COM card.  I honestly don't remember which
>  > >one is plugged in which way.  But it shouldn't matter.
>  > >
>  > >-derek
>  > >
>  > >> -----Original Message-----
>  > >> From: Derek Atkins <http://www.MIT.EDU/~warlord>
>  > >> To: Mark Reimers <http://www.rcn.com/~mreimers>
>  > >> Date: Tuesday, January 16, 2001 9:39 AM
>  > >>
>  > >> >I have a Linux box connected to RCN.  The only issue I am aware of
>  > >> >is that you need to power-cycle your cablemodem if you change the NIC
>  > >> >card that you use.  Other than that, it's always worked for me.
>  > >> >
>  > >> >And I use RH6.2 w/ pump.
>  > >> >
>  > >> >-derek
>