On Wed, 2010-04-14 at 16:23 +0000, tony.chamberlain@lemko.com wrote:

I found the response below today online to a question I had. For some reason I never got the mail. I am not quite clear on what "DHCP + DFG + 2DNS entries" means when calculating the IP to set for the router:

Thanks

Re: [CentOS] Yum/WGET/HTTP sourceforge etc. new April 12, 2010 08:10AM On Sun, 2010-04-11 at 22:57 +0000, tony.chamberlain@lemko.com wrote:

...

Here is what I tried. When I put the machine directly on an AT&T IP connection (12.147.X.Y) everything worked fine. Same with Comcast on a direct link. The times I am having problems is when our router is hooked up to a Comcast IP (70.88.X.Y) and assigns 192.168.5.X addresses to our machines. So when I was doing the above from 192.168.5.27 going through the router through Comcast is when I had the problem.

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Try this: For the NIC on your Comcast router set its ip to one that the dhcp in the router gives out + DFG + 2 DNS entries. In order to have it static. I see lots of routers with your problem.

John

--- DFG = default gateway 2DNS = primary and secondary dns server addresses DHCP = Would be your normal assigned ip address from the router on the nic card that the comcast router hands out.

So now you pick one ip address the router assigns from it's dhcp address block and create a static ip configuration for your eth0 nic, If the routers dhcp address block is 192.168.2.2 - 192.168.2.100 pick 192.168.2.10 for the ip.

Now eth0 needs a default gateway which is your routers address maybe like 192.168.2.1.

Now eth0 needs a primary and secondary DNS entry. If the isp only has one then use one else you can use the default gateway address of the router but not recomended because you are having problems so I think you need the real dns.

If you log into the router you will see or find the dns entries you need and the dhcp block that is assigned.

John