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Ok, for starters the Cisco 675 operates in one of two modes; bridging or
routing.  I'll make one assumption and that is your ISP is providing you a
static IP address.  If they are not, or won't, or will charge you for it, you've
picked the wrong ISP.

Proceeding, if you are running in bridging, the single IP address they issue
would be for the NIC on your Linux box assuming that you have a crossover cable
connecting the router to your Linux system.  I do NOT recommend bridging because
you, and everyone else, can place your NIC into promiscous and read all the DSL
traffic on that ISP's switch that you are being bridged into.

If you are operating in routing mode, they would have issued you a netmask of
255.255.255.252 which provides for two IP addresses, one for the router ethernet
port and one for your NIC in the Linux box; again assuming nothing more complex
than a 10bT crossover cable.

Why you are using a private address of 192.168.1.1 escapes me.

Regards,

Barry

"Ashley M. Kirchner" wrote:

> /* HINT: Search archives @ http://www.indyramp.com/masq/ before posting!
> /* ALSO: Don't quote this header. It makes you look lame :-) */
>
>     Ok, this goes a little bit beyond this list, but I'm hoping someone
> on here has a similar setup and can tell me what the heck am I supposed
> to do here.  See, I decided to bite the bullet and get DSL.  Got the
> mode/router and all, and now I'm trying to figure out exactly how this
> thing is supposed to be setup, specially since neither US/Qwest nor my
> ISP deal with linux machines (!!!).
>
>     Anyways, the router is a Cisco 675 (you can find everything about on
> Cisco's website).  The DSL link itself is up.  You can ping/telnet to
> 205.240.12.217 just fine (don't worry, you won't get passed the [two]
> password prompt[s] - unless you plan on hacking into the router).
>
>     The router also has an ethernet port, which has been configured as
> 192.168.1.1, netmask of 255.255.255.0.  I've linked that ethernet port
> to eth1 on my linux box.  The question I have now is, how the heck to
> configure eth1 on the linux box so that it can see the net.  Everything
> I tried, nothing seemed to work, nada.  (eth1, not eth0 - eth0 is
> (eventually) going to the masq DEV for the other machines)
>
>     The first thing I tried was to enable the DHCP server on the router,
> and let it delegate IPs.  Well, when I tell eth1 to go hunt for its IP
> (through /sbin/pump), it just sits there for a while, and eventually
> quits, telling me it failed.  Network activity on the router does spike
> whenever I do that.  So maybe it doesn't like the DHCP server on the
> router.  So, I turned it off and tried to manually configure eth1 for IP
> 192.168.1.2, and setting the gw to .1 (the router's eth0)...no luck
> there either.
>
>     So, I'm at at loss here.
>
>     AMK4
>
> --
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>   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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>   Director of Internet Operations / SysAdmin    .     800.441.3873 x130
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