network woes

[Lisa Kachold]

On 12/23/09, Dazed_75 <lthielster at gmail.com> wrote:
> Honestly, I've never seen a cable/dsl modem that acts as a DHCP server or
> NAT translator.  They normally are only connected to one computer or router
> and just pass the IP/DNS info to the computer or router.  All routers I have
> ever dealt with DO act as DHCP servers and usually provide NAT.

ActionTec, LinkSys, Motorola and a few other Cox brands of Cable modem
all do DHCP as part of the cox network provisioning solutions:

http://omgili.com/address-cable-cox-ip-static

> The trouble he is seeing sounds most like a hardware problem associated with
> wiring or the switch portion of the router.  I would try something like:
>
>    1. traceroute yahoo.com though I don't think it will be definitive,
>    2. connect the computer directly to the cable/dsl modem preferably
>       1. If the problem goes away, replace the router,
>       2. if it does not, try changing the ethernet cable
>       3. if it still does not go away, we look to the computer and its
>       hardware
>    3. computer back to the router, change the ethernet card and try again
>    4. if you still have a problem, search log files (dmesg, etc)
>    5. left for last because one computer has more problems than others, but
>    you could also try logging into the router and the modem to look at log
>    files.  Maybe one computer has more problems because of when it is used
>    rather than the fact of it being that computer.
>


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