Setting up second nic for local lan backup

[Barry Brimer]

To specify which NIC to use for the default gateway add GATEWAYDEV=ethX 
into your /etc/sysconfig/network file .. where X is replaced with the 
proper device interface.

On Thu, 5 May 2011, Steven Buehler wrote:

>
>
> -----Original Message-----
> From: redhat-list-bounces at redhat.com [mailto:redhat-list-bounces at redhat.com]
> On Behalf Of Matt Iavarone
> Sent: Wednesday, May 04, 2011 7:47 PM
> To: General Red Hat Linux discussion list
> Subject: Re: Setting up second nic for local lan backup
>
> On Wed, May 4, 2011 at 8:40 PM, Steven Buehler <steve at ibushost.com> wrote:
>> I have a Redhat 5.2 box that I am trying to setup in internal lan on
>> for backing up to a local machine since my Provider charges for any
>> bandwith going over the external IP's even though it comes right back
>> to another server of my network.  Below is the setup for the 2 nics
>> that I tried, but when I try to start the second nic with "ifup eth1",
>> it looses the route for the first nic so my external IP will no longer
>> work unless I restart it which then takes the route out of the second
>> nic.  What am I missing?  I hope someone can help me with this.  BTW,
>> the second nic is connected to an internal router.  I am assuming that
>> I can't just use a switch instead any easier.
>>
>> # cat ifcfg-eth0
>> DEVICE=eth0
>> BOOTPROTO=none
>> HWADDR=00:1c:23:d5:be:02
>> IPADDR=101.110.67.100
>> NETMASK=255.255.255.0
>> GATEWAY=101.110.67.1
>> ONBOOT=yes
>> TYPE=Ethernet
>> PEERDNS=no
>>
>> # cat ifcfg-eth1
>> BOOTPROTO=static
>> DEVICE=eth1
>> ONBOOT=no
>> IPADDR=192.168.2.151
>> GATEWAY=192.168.2.1
>> NETMASK=255.255.255.0
>> HWADDR=00:1c:23:d5:be:04
>> PEERDNS=no
>> TYPE=Ethernet
>>
>
> You need to remove the gateway from the second NIC and use iproute2 to add a
> second default route for eth1.
>
> -Matt
>
> Thank you Matt,
> Question, the router we were going to use has problems.  My boss wants to
> buy a hub to use for this LAN we will be using on the second nics for
> backups.  I don't like hubs.  Shouldn't we have another router or switch
> instead?
>
> Thanks
> Steve
>
>
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