dhcpd gateway settings

[Rick Sewill]

On Friday, April 22, 2011 12:11:38 PM Aaron Gray wrote:
> I am trying to set up a network and gateway on 192.168.1.x that I am using
> for BOOTP'ing servers.
> 
> dhcpd.conf
> ~~~~~~~~~~~
> allow booting;
> allow bootp;
> ddns-update-style interim;
> ignore client-updates;
> subnet 192.168.1.0 netmask 255.255.255.0 {
>     option subnet-mask 255.255.255.0;
>     option broadcast-address 192.168.1.255;
>     option routers 192.168.1.1;
>     option router-discovery true;
>     option domain-name-servers 8.8.8.8;
>     range dynamic-bootp 192.168.1.200 192.168.1.240;
>     next-server 192.168.0.140;
>     filename "pxelinux.0";
> }
> subnet 192.168.0.0 netmask 255.255.255.0 {
> }
> ~~~~~~~~~~
> 
> But I cannot seem to get HTTP or other services to work on 192.168.1.x
> 
> I have the existing 192.168.0.x network and was wondering how gateway
> requests should get from 192.168.1.x to 192.168.0.1 ?
> 
> Many thanks in advance,
> 
> Aaron

If I were a dhcp client, with no other routing configuration information,
I will arp for the router at 192.168.1.1 to find the router's mac address.
I would send the packet not destined to my local subnet to the router.

I will not arp for 192.168.0.140 because it is not on my local subnet.

The question becomes, how is the router at 192.168.1.1 configured?
The router needs to forward the packets to the 192.168.0.x network.

To see the path, on the 192.168.1.x machine, try traceroute -n 192.168.0.x