[Cialug] Cable Modems

[Dave Hala]

I had that problem too, unfortunately I moved on to other issues
before I could resolve it.

My gut instinct was that there is some obscure protocal that the cable
modem uses in conjunction with DHCP that is natively supported on
windows but not Linux (which most firewalls use)







On Sun, Jan 24, 2016 at 1:58 PM, L. V. Lammert <lvl at omnitec.net> wrote:
> OK, .. got a weird situation:
>
> The local cable company [Charter here in St.Louis] told us they would give
> us a monthly discount if we swapped out our Docsis 3.0 Motorola modem for
> a new one. Looks like the new Cisco unit will bond 16 channels together
> for a lot higher bandwidth. OK, .. sounds good to me.
>
> The new Cisco provisions just fine and works with a laptop, but when I
> connect it to my firewall box it does not route traffic. DHCP does not
> actually assign a gateway, so I plugged in the GW that the modem gives my
> laptop. No joy, .. so I switched to static IP & GW [same as the laptop],
> no joy. Cloned the MAC address from my laptop to the linux firewall box,
> .. no joy. The old Motorola unit worked just fine via DHCP.
>
> Something has changed with this new Cisco unit - the "Link" light flashes
> green with my laptop, but YELLOW with the firewall box.
>
> Has anyone run into a situation like this?
>
>         Thanks!
>
>         Lee
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> http://cialug.org/mailman/listinfo/cialug