I have a dynamic IP account for my DSL from uswest.net.
Everyone who gets such an account receives a Cisco 675
router (this may have changed to a later version recently).
Everyone with such an account will have an "internal"
network with the router being 10.0.0.1 and the desktop
computer being 10.0.0.2. Everyone. This internal network
is separate from the internet as a whole. The router
itself gets assigned a dynamic IP but it is invisable
behind the router. Below is the result of running
ifconfig eth0 on my system as I am connected and typing
email and web browsing:
[patrick@Tempus patrick]$ /sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:04:6C:DE:AE
inet addr:10.0.0.2 Bcast:10.0.0.255 Mask:255.255.255.0
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21185 errors:0 dropped:0 overruns:0 frame:0
TX packets:21843 errors:0 dropped:0 overruns:0 carrier:0
collisions:20 txqueuelen:100
Interrupt:7 Base address:0xe400
If I want to connect to my router and alter any settings, I telnet
into it and the address I telnet to is 10.0.0.1 (I can also setup
minicom under linux or hyperterminal under windoze to directly
connect to the router for configuring). If I run ping 10.0.0.2, it
is the same as pinging localhost or 127.0.0.1. If I ping 10.0.0.1
I am pinging my router.
My thought was to assign something like 10.0.0.3 to my laptop, if
that will work. Otherwise I am going to have to setup, what,
IP aliasing or something?
-----Original Message-----
From: Philippe Moutarlier [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 10, 2000 10:23 PM
To: [EMAIL PROTECTED]
Cc: recipient.list.not.shown
Subject: Re: connecting laptop to my desktop
Patrick O Neil <[EMAIL PROTECTED]> writes:
> A bit more info... I have my 3c590 driver compiled into
> my 2.2.14 kernel but the tulip driver for my netgear
> is a module. My 3com card is eth0 and the netgear would
> be/was (I removed the card and rebooted to be able to
> reconnect to the net and post) eth1.
>
> I have a dynamic IP from uswest on my DSL but my box
> is 10.0.0.2 and the DSL router is 10.0.0.1 internally -
> to the world, my _router_ has whatever IP uswest assigns.
>
I guess 10.0.0.1 is the address you assigned to your removed-card ?
Not the 3com ?
> I do not really know where to start here. Not that it
> matters but my desktop runs 24/7 - my IP probably remains
> the same most of the time though I don't know for sure (I can
> never determine what my DSL router's IP address actually is.
> Everything I've tried to determine it always gives me back
> the "internal" network IP of 10.0.0.1 for the router and
> 10.0.0.2 for my desktop).
WHAT ????
what does /sbin/ifconfig
says (please report the whole output).
You MUST have an interface configured with your external IP (maybe an alias
?)
or it will never work.
Philippe
> What the outer world sees as my
> IP I don't know.
>
> patrick
>
> -----Original Message-----
> From: Philippe Moutarlier [mailto:[EMAIL PROTECTED]]
> Sent: Monday, January 10, 2000 9:37 PM
> To: [EMAIL PROTECTED]
> Cc: recipient.list.not.shown
> Subject: Re: connecting laptop to my desktop
>
>
>
> Well, I am not sure how to set 2 eth devices but I know it is possible.
> possibly :
>
> alias eth1 ethmodule.o
>
> with the right options there.
>
> Make sure the second card is NOT using dhcp : your server might not
> like having 2 requests from the same client :=)
>
> What you might try :
>
> - move away any /etc/sysconfig/network-script/ifcfg-eth1
> (assuming eth1 is your second card)
>
> - put your second card in and see if it is working
>
> - run /sbin/ifconfig eth1 "my_private_ip" netmask 255.255.255.0
> you will have to use a private network to do what you want.
> you can pick addresses like.
>
> 192.168.0.x
> for your desktop
> and
> 192.168.0.y
> for your laptop
>
> After that, and if it works, you will have to use "ipchains"
> to masquerade your private ips .
>
>
> If it doesn't work, look at what ifconfig says about IRQS and IOs for both
> cards
>
> Philippe
>
>
> Patrick O Neil <[EMAIL PROTECTED]> writes:
>
> > I have RH 6.1 on my desktop system, kernel 2.2.14. I
> > presently have a 3com 3c900 installed and working with
> > my cisco DSL router. I have an extra NIC, a netgear that
> > kudzu nicely detects and "sets up". What I would like to
> > do is install this second card such that my laptop is
> > connected to the net thru my RH 6.1 desktop system.
> >
> > The laptop is an IBM ThinkPad 1400 with a 3com Etherlink
> > III 3c589 PCMCIA card. I also have Caldera's OpenLinux
> > 2.3 installed on it.
> >
> > I tried first just installing the netgear card and
> > booting up. As I said, kudzu detected it fine but
> > I found that I could no longer communicate with
> > my DSL router. If I ran dhcpcd, it would ultimately
> > timeout without ever acquiring an IP from my ISP
> > (uswest). I also was unable to ping or telnet into
> > my DSL router. When I removed the netgear card,
> > all was well again.
> >
> > I had thought to simply configure the netgear card
> > AFTER installing it (naturally) and didn't think it
> > would automatically cause a problem, but it did.
> >
> > How do I proceed here? What howtos do I need to
> > read about this? I need to know how to get these
> > two cards to coexist as well as how to setup my
> > desktop system so that it will permit my laptop to
> > communicate with it and connect to the internet
> > (via my desktop via my DSL router). Can anyone
> > help me out here?
> >
> > patrick
> >
> >
> > --
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> > as the Subject.
>
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