confused routes with multiple nics

kevincw01 · External Since: Aug 03, 2007 Posts: 5

I've got 2 NICs I'm not able to reach my dns servers on eth0 unless I
disable eth1. Obviously, my routes are incorrect but my medeling with
them has caused more problems than not. Here is my setup:

eth0
ip 129.200.32.46
subnet 255.255.255.192
gateway 129.200.32.1
dns 129.200.101.3
dns 129.172.51.4

eth1
ip 10.0.0.211
subnet 255.255.255.0
gateway 10.0.0.1
no dns

I can ping hosts with 10.0.0.2xx IPs and hosts with 129.200.32.xxx IPs
but I cannot ping the DNS server IPs. When I do it tells me its using
the 10.0.0.211 interface(eth1). Any suggestions on how I should setup
my routes?

Robert Harris · External Since: Aug 14, 2005 Posts: 166

kevincw01 wrote:
> I've got 2 NICs I'm not able to reach my dns servers on eth0 unless I
> disable eth1. Obviously, my routes are incorrect but my medeling with
> them has caused more problems than not. Here is my setup:
>
> eth0
> ip 129.200.32.46
> subnet 255.255.255.192
> gateway 129.200.32.1
> dns 129.200.101.3
> dns 129.172.51.4
>
> eth1
> ip 10.0.0.211
> subnet 255.255.255.0
> gateway 10.0.0.1
> no dns
>
> I can ping hosts with 10.0.0.2xx IPs and hosts with 129.200.32.xxx IPs
> but I cannot ping the DNS server IPs. When I do it tells me its using
> the 10.0.0.211 interface(eth1). Any suggestions on how I should setup
> my routes?
>
You have two gateways to the rest of the internet; you should only have one!

Robert

kevincw01 · External Since: Aug 03, 2007 Posts: 5

On Aug 6, 2:16 pm, Robert Harris <robert.f.har....DeleteThis@blueyonder.co.uk>
wrote:
> kevincw01 wrote:
> > I've got 2 NICs I'm not able to reach my dns servers on eth0 unless I
> > disable eth1. Obviously, my routes are incorrect but my medeling with
> > them has caused more problems than not. Here is my setup:
>
> > eth0
> > ip 129.200.32.46
> > subnet 255.255.255.192
> > gateway 129.200.32.1
> > dns 129.200.101.3
> > dns 129.172.51.4
>
> > eth1
> > ip 10.0.0.211
> > subnet 255.255.255.0
> > gateway 10.0.0.1
> > no dns
>
> > I can ping hosts with 10.0.0.2xx IPs and hosts with 129.200.32.xxx IPs
> > but I cannot ping the DNS server IPs. When I do it tells me its using
> > the 10.0.0.211 interface(eth1). Any suggestions on how I should setup
> > my routes?
>
> You have two gateways to the rest of the internet; you should only have one!
>
> Robert

So, you're saying I should remove the gateway for eth1?

phil-news-nospam · External Since: Nov 16, 2006 Posts: 329

On Mon, 06 Aug 2007 22:04:38 -0000 kevincw01 <kevin.RemoveThis@netkev.com> wrote:
| On Aug 6, 2:16 pm, Robert Harris <robert.f.har....RemoveThis@blueyonder.co.uk>
| wrote:
|> kevincw01 wrote:
|> > I've got 2 NICs I'm not able to reach my dns servers on eth0 unless I
|> > disable eth1. Obviously, my routes are incorrect but my medeling with
|> > them has caused more problems than not. Here is my setup:
|>
|> > eth0
|> > ip 129.200.32.46
|> > subnet 255.255.255.192
|> > gateway 129.200.32.1
|> > dns 129.200.101.3
|> > dns 129.172.51.4
|>
|> > eth1
|> > ip 10.0.0.211
|> > subnet 255.255.255.0
|> > gateway 10.0.0.1
|> > no dns
|>
|> > I can ping hosts with 10.0.0.2xx IPs and hosts with 129.200.32.xxx IPs
|> > but I cannot ping the DNS server IPs. When I do it tells me its using
|> > the 10.0.0.211 interface(eth1). Any suggestions on how I should setup
|> > my routes?
|>
|> You have two gateways to the rest of the internet; you should only have one!
|>
|> Robert
|
| So, you're saying I should remove the gateway for eth1?

Out which interface do you want the packets destined for the internet to go?

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