Re: A PC with two NIC routing problem

It is a linux server with multiple guest virtual guest in it.
Without changing the existing services in a Vlan, it is desired to add
another NIC to provide additional services with clients on another vlan.
can linux ip table address the problem?

Thanks,
Jack

On 10/01/2010 03:34 PM, Ryan West wrote:
> Stop dual homing the box or proxy the connections from a box on the network without the default gateway. What's the real problem you're trying to solve, is there an application that needs to be reached on that interface?
>
> Sent from handheld
>
> On Oct 1, 2010, at 2:10 PM, Jack<ccie.unnumbered_at_gmail.com> wrote:
>
>
>> Here is my guess:
>> when host10 pings 11.11.11.100, the ip packet source address is 10.10.10.10 and it reaches 11.11.11.100;
>> when the linux PC sends the reply, it uses 10.10.10.100 as the source address and Host10 does not like it because it is not from 11.11.11.100.
>> Does it make sense?
>> If so, how to fix it?
>>
>> Thanks,
>> Jack
>>
>> On 10/01/2010 01:41 PM, Sergey Matashuk wrote:
>>
>>> do host10 and host11 have defult gateway configured?
>>>
>>> On Fri, Oct 1, 2010 at 8:32 PM, Jack<ccie.unnumbered_at_gmail.com> wrote:
>>>
>>>
>>>> A linux PC has two NIC cards:
>>>> eth0=10.10.10.100/24 belongs to VLAN 10
>>>> eth1=11.11.11.100/24 belongs to VLAN 11
>>>> the default gateway is 10.10.10.1
>>>>
>>>> A layer 3 switch has the following configuration:
>>>> int vlan 10
>>>> ip addr 10.10.10.1 255.255.255.0
>>>> int vlan 11
>>>> ip addr 11.11.11.1 255.255.255.0
>>>>
>>>>
>>>> Host10 on vlan 10 with ip address 10.10.10.10/24 can ping 10.10.10.100, but
>>>> cannot ping 11.11.11.100
>>>>
>>>> Host11 on vlan 11 with ip address 11.11.11.11/24 can ping 11.11.11.100, but
>>>> cannot ping 10.10.10.100
>>>>
>>>>
>>>> How to make the linux PC respond to all pings from both hosts?
>>>>
>>>>
>>>> Thanks,
>>>> Jack
>>>>
>>>>
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Received on Fri Oct 01 2010 - 15:45:13 ART