Oh boy. Let's make some sense of all this.....
On Mon, 10 Jan 2000, Patrick O Neil wrote:
>[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?
OK. Your Cisco is routing traffic from your working desktop out to the world.
Its interface that you can see (10.0.0.1) and your machine (10.0.0.2) are on
the same Class-C subnet (255.255.255.0).
You want to network your laptop to your desktop and get out to the net right?
First thing you must do is get that second network card working. Can you see
it during boot-up? Does 'dmesg | more' show you anything for eth1?
Have a look at 'cat /proc/pci' and 'cat /proc/interrupts'. Hopefully both
cards are visible in some fashion here. Otherwise we're gonna be up late. ;0)
Now. Unless your Cisco has multiple ports, you're going to have to run the
wire from your laptop to your desktop's second NIC. And your desktop is
going to have to be a "router". This is going to create a separate SUBNET.
Like so:
Internet
|
|
Cisco
[10.0.0.1 (255.255.255.0)]
|
|
[10.0.0.2 (255.255.255.0)] <-- 1st NIC that works
Desktop
[192.168.1.1 (255.255.255.0)] <-- 2nd NIC that works (maybe)
|
|
|
[192.168.1.2 (255.255.255.0)]
Laptop
>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.
IRQ conflict maybe?
>> 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 ?
Huh?
>> 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 ????
Yeah! in which language are you guys speaking?
>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.
Not true. If his desktop can get out, then his Cisco is smart enough to route
and masquerade for him. And he'll have to teach his desktop to do the same for
his laptop.
>>
>> 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.
Right-O! Now make sure your hardware is recognized and you're there....
>> After that, and if it works, you will have to use "ipchains"
>> to masquerade your private ips .
Um, no. ipchains does packet filtering, preventing those protocols you specify
from leaving or entering. He needs to masquerade first. Once that's working,
then he can filter.
>> If it doesn't work, look at what ifconfig says about IRQS and IOs for both
>> cards
Yes, good advice here. What does it report with both cards in the machine?
What does /var/log/messages say when both are present?
Keep trying. This will work.
Eric Cifreo
Austin. TX
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