Multiple NICS issue

Hi,

I just finished installing RH9 with two NICS and I'm trying to figure out
how to set up my NICS properly. Here's how it should work;
eth0 is configured to use dhcp where is obtains an IP from my dhcp server
and will be used to access network resources (default gateway
192.168.0.201). eth1 is configured to use dhcp from a PPPoE router and will
be used to internet access (gateway 10.0.0.1). The reason for using the
PPPoE router for internet access is becuase my primary network uses
Microsoft ISA server and I can't authenticate to it through Linux. Also,
ETH1 is used to accept incoming request to the Linux box (FTP,SSH and backup
mail server) eth1 is not a trusted device. Both devices are getting correct
IPs.
What is happening is I can connect to my local network (192.168.0.*) but
when I try to access the internet, the request is trying to go through the
ISA server instead of the PPPoE router.
Can anyone offer any suggestions?

ifconfig output:

eth0 Link encap:Ethernet HWaddr 00:30:84:88:56:1D

inet addr:192.168.0.116 Bcast:192.168.0.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:44809 errors:0 dropped:0 overruns:0 frame:0

TX packets:32199 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:100

RX bytes:57185167 (54.5 Mb) TX bytes:3365880 (3.2 Mb)

Interrupt:9 Base address:0xd000



eth1 Link encap:Ethernet HWaddr 00:E0:7D1:0F:E4

inet addr:10.0.0.19 Bcast:255.255.255.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:1201 errors:0 dropped:0 overruns:0 frame:0

TX packets:1304 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:100

RX bytes:496312 (484.6 Kb) TX bytes:156830 (153.1 Kb)

Interrupt:10 Base address:0x7000



lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:56055 errors:0 dropped:0 overruns:0 frame:0

TX packets:56055 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:3827464 (3.6 Mb) TX bytes:3827464 (3.6 Mb)



Route output:

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

10.0.0.0 * 255.255.255.0 U 0 0 0 eth1

192.168.0.0 * 255.255.255.0 U 0 0 0 eth0

169.254.0.0 * 255.255.0.0 U 0 0 0 eth1

127.0.0.0 * 255.0.0.0 U 0 0 0 lo

default 192.168.0.201 0.0.0.0 UG 0 0 0 eth0



Thanks in advance

In article <1pXTa.479$(E-Mail Removed)>, MTS News Server wrote:
> eth0 is configured to use dhcp where is obtains an IP from my dhcp server
> and will be used to access network resources (default gateway
> 192.168.0.201). eth1 is configured to use dhcp from a PPPoE router and will
> be used to internet access (gateway 10.0.0.1). The reason for using the

Didn't happen this way.

> PPPoE router for internet access is becuase my primary network uses
> Microsoft ISA server and I can't authenticate to it through Linux. Also,

What is a "MS ISA server"? I've heard of ICA and ICS ... but then I
don't try to stay up with MS matters.

> when I try to access the internet, the request is trying to go through the
> ISA server instead of the PPPoE router.

Yes, it is. See:

> Kernel IP routing table
>
> Destination Gateway Genmask Flags Metric Ref Use Iface
> [snip]
> default 192.168.0.201 0.0.0.0 UG 0 0 0 eth0

That's your default route, eth0, not eth1.

These commands will fix it:
route del default
route add default gw 10.0.0.1
But you'll want to fix your configuration so that this doesn't happen
every time. I just posted in a thread "ppp0 seems to be working, but
can't browse the net"; some of that applies to you as well. You have
conflicting DHCP servers both assigning default routes, and the wrong
one wins.
--
/dev/rob0 - preferred_email=i$((28*28+28))@softhome.net
or put "not-spam" or "/dev/rob0" in Subject header to reply

On Thu, 24 Jul 2003 15:43:56 -0700, /dev/rob0 wrote:

> In article <1pXTa.479$(E-Mail Removed)>, MTS News Server wrote:
>> eth0 is configured to use dhcp where is obtains an IP from my dhcp server
>> and will be used to access network resources (default gateway
>> 192.168.0.201). eth1 is configured to use dhcp from a PPPoE router and will
>> be used to internet access (gateway 10.0.0.1). The reason for using the
>
> Didn't happen this way.
>
>> PPPoE router for internet access is becuase my primary network uses
>> Microsoft ISA server and I can't authenticate to it through Linux. Also,
>
> What is a "MS ISA server"? I've heard of ICA and ICS ... but then I
> don't try to stay up with MS matters.
>
>> when I try to access the internet, the request is trying to go through the
>> ISA server instead of the PPPoE router.
I made the changes you suggested and it worked. I had tried something
similar but instead of using "default" I was using 0.0.0.0. Technically
this would have worked but I couldn't delete the original default as I was
trying to delete 0.0.0.0 (for default)
I read the post that you suggested but it made no references as to how to
make the configuration changes permanent. Once I restart the network
service (or drop and up the interfaces), the default reverts to
192.168.0.201. If there are any suggestions on how to do this I would
appreciate it.

Thx again

> Yes, it is. See:
>
>> Kernel IP routing table
>>
>> Destination Gateway Genmask Flags Metric Ref Use Iface
>> [snip]
>> default 192.168.0.201 0.0.0.0 UG 0 0 0 eth0
>
> That's your default route, eth0, not eth1.
>
> These commands will fix it:
> route del default
> route add default gw 10.0.0.1
> But you'll want to fix your configuration so that this doesn't happen
> every time. I just posted in a thread "ppp0 seems to be working, but
> can't browse the net"; some of that applies to you as well. You have
> conflicting DHCP servers both assigning default routes, and the wrong
> one wins.

Ryan Gaudet wrote:
> On Thu, 24 Jul 2003 15:43:56 -0700, /dev/rob0 wrote:
>
>
>>In article <1pXTa.479$(E-Mail Removed)>, MTS News Server wrote:
>>
>>>eth0 is configured to use dhcp where is obtains an IP from my dhcp server
>>>and will be used to access network resources (default gateway
>>>192.168.0.201). eth1 is configured to use dhcp from a PPPoE router and will
>>>be used to internet access (gateway 10.0.0.1). The reason for using the
>>
>>Didn't happen this way.
>>
>>
>>>PPPoE router for internet access is becuase my primary network uses
>>>Microsoft ISA server and I can't authenticate to it through Linux. Also,
>>
>>What is a "MS ISA server"? I've heard of ICA and ICS ... but then I
>>don't try to stay up with MS matters.
>>
>>
>>>when I try to access the internet, the request is trying to go through the
>>>ISA server instead of the PPPoE router.
>
> I made the changes you suggested and it worked. I had tried something
> similar but instead of using "default" I was using 0.0.0.0. Technically
> this would have worked but I couldn't delete the original default as I was
> trying to delete 0.0.0.0 (for default)
> I read the post that you suggested but it made no references as to how to
> make the configuration changes permanent. Once I restart the network
> service (or drop and up the interfaces), the default reverts to
> 192.168.0.201. If there are any suggestions on how to do this I would
> appreciate it.


I think that you need to put:
DEFROUTE=yes

in the configuration file of the devide you choose to be default. Other
should have it set to "no". Just an idea; I am not a networking expert.
In my case, my ppp0 is supposed to the default route, I have
DEFROUTE=yes in my ppp0 config file, as mentioned in my post "problem
SOLVED. Was Re: peculiar problem: ping works, but cannot browse. Need
help of network gurus" (the same thread that Rob was mentioning).

HTH,
->HS




> Thx again
>
>
>>Yes, it is. See:
>>
>>
>>>Kernel IP routing table
>>>
>>>Destination Gateway Genmask Flags Metric Ref Use Iface
>>>[snip]
>>>default 192.168.0.201 0.0.0.0 UG 0 0 0 eth0
>>
>>That's your default route, eth0, not eth1.
>>
>>These commands will fix it:
>> route del default
>> route add default gw 10.0.0.1
>>But you'll want to fix your configuration so that this doesn't happen
>>every time. I just posted in a thread "ppp0 seems to be working, but
>>can't browse the net"; some of that applies to you as well. You have
>>conflicting DHCP servers both assigning default routes, and the wrong
>>one wins.
>
>


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