Re: [gentoo-user] {OT} A simple routing problem

[Nilesh Govindrajan]

On Tuesday 18 December 2012 09:52:43 AM IST, Nilesh Govindrajan wrote:
> On Tuesday 18 December 2012 09:40:44 AM IST, Kevin Brandstatter wrote:
>> On 12/17/2012 08:00 PM, Nilesh Govindrajan wrote:
>>> On Tuesday 18 December 2012 09:24:41 AM IST, Kevin Brandstatter
>>> wrote:
>>>> On 12/17/2012 07:44 PM, Nilesh Govindrajan wrote:
>>>>> On Tuesday 18 December 2012 09:09:16 AM IST, Kevin
>>>>> Brandstatter wrote:
>>>>>> On 12/17/2012 07:26 PM, Nilesh Govindrajan wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I'm stuck with a routing issue:
>>>>>>>
>>>>>>> I have a DD-WRT router, which has one WAN port and four
>>>>>>> LAN ports with WiFi.
>>>>>>>
>>>>>>> I have a fiber connection which is connected by dialing
>>>>>>> PPPoE using pppd on the router, so I have no choice but to
>>>>>>> connect the fiber connection on WAN port.
>>>>>>>
>>>>>>> I have yet another (much slower) ADSL link, with it's own
>>>>>>> router (LAN-only). I'm trying to connect the router to the
>>>>>>> DD-WRT router's LAN port. I'm able to access the router,
>>>>>>> but routing through the gateway (the ADSL router) fails.
>>>>>>>
>>>>>>> Here's a simple diagram:
>>>>>>>
>>>>>>> The LAN network I'm using on DDWRT is 192.168.0.0, which
>>>>>>> is the LAN network for the internal side and WiFi.
>>>>>>>
>>>>>>> The fiber connection is obviously public network.
>>>>>>>
>>>>>>> The other ADSL connection can be configured to change
>>>>>>> subnet, it has a LAN side and WAN side.
>>>>>>>
>>>>>>> How I can I route through the ADSL router without requiring
>>>>>>> a separate NIC/network for it?
>>>>>>>
>>>>>> what exactly are you trying to route? traffic out to the
>>>>>> internet over the ADSL? or just trying to connect the
>>>>>> machines on that router to the fiber line and route all
>>>>>> traffic from both out on the fiber?
>>>>>>
>>>>>> -Kevin
>>>>>
>>>>>
>>>>> Actually my fiber connection has a smaller limit than the ADSL
>>>>> connection. I am trying to use the fiber connection for all
>>>>> activities except some torrent downloading for which I want to
>>>>> use my ADSL connection. Once I'm able to route through the
>>>>> ADSL gateway, it would be easy for me to setup another ip on
>>>>> eth0 on my machine on which transmission could listen. All
>>>>> traffic on that ip would be routed through ADSL and otherwise
>>>>> the fiber.
>>>>>
>>>>> -- Nilesh Govindarajan http://nileshgr.com
>>>>>
>>>> well in that case if you know how to set it up so that the
>>>> dd-wrt router can see the ADSL gateway you can set a route on
>>>> your box to route traffic on a specific device to that gateway.
>>>> In fact, you might even be able to static route the torrent ports
>>>> to that gateway from dd-wrt
>>>>
>>>> -Kevin
>>>
>>>
>>> I tried that. As the simplest test, I added this on ddwrt:
>>>
>>> route add -host 8.8.8.8 gw 192.168.0.32
>>>
>>> Where 192.168.0.32 is the private IP of my ADSL router. But when I
>>> say ping 8.8.8.8 from ddwrt, I don't get any response. Any idea why
>>> this happens?
>>>
>>> -- Nilesh Govindarajan http://nileshgr.com
>>>
>> is the ADSL configured to forward to the internet? how is the gateway
>> set up? it needs to be configured to route the outbound traffic to the
>> internet
>>
>> -Kevin
>
> Yes, I have a static IP on the ADSL connection and it is setup for the
> same. Connects using MER and NAT is enabled.
> If I connect the router to DD-WRT's WAN port and change subnet of the
> ADSL private network (matching the same on WAN interface), then it
> works properly.
>
> --
> Nilesh Govindarajan
> http://nileshgr.com

Wait, it just worked. Looks like I missed out something yesterday.
Thanks for your help.

--
Nilesh Govindarajan
http://nileshgr.com