On Thu, 04 Mar 2004 21:16:59 GMT, "Jacob Westenbach"
<(E-Mail Removed)> wrote:
>"Dave" <(E-Mail Removed)_nospam> wrote in message
>news:(E-Mail Removed).. .
>> Thanks for the reply.
>>
>> Basically I want ot use one linux ftp driver to handle ftp posts from
>> 3 different firer lines.
>>
>> If line one goes down I have code that tells the posting software to
>> look at the next IP address.
>>
>> I'm not looking for a switch or a hub. I need one one machine to act
>> as a redundant/failover ftp server in the case of one or two internet
>> lines going down.
>>
>> Each one NATs to a public IP through a seperate firewall device (3
>> cards pointing to 3 firewalls, one card per firewall)
>>
>>
>>
>> On Thu, 4 Mar 2004 20:39:01 +0100, Michael Heiming
>> <michael+(E-Mail Removed)> wrote:
>>
>> >-----BEGIN PGP SIGNED MESSAGE-----
>> >Hash: SHA1
>> >
>> >Dave <(E-Mail Removed)_nospam> wrote:
>> >
>> >[..]
>> >
>> >> I have three network adapters in a Redhat 8 machine (eth0, eth1, and
>> >> eth2)
>> >
>> >> Each has an IP on the 192.168.1.x subnet (the only subnet in the
>> >> office). Each points at a different gateway. I.E. eth0 points at
>> >> 192.168.1.1, eth1 points at 192.168.1.2, and eth2 points at
>> >> 192.168.1.3)
>> >
>> >[..]
>> >
>> >> Can point me in the right direction on getting Linux to multihome the
>> >> way I want it?
>> >
>> >It's not a question of what you want, more about how networking
>> >works, you shouldn't have multiple IP from the same subnet on
>> >different NICs, unless you are using the bonding driver.
>> >
>> >Perhaps, you tell us what you are going to try and with a little
>> >luck someone has an idea. Right now it sounds as if you want to
>> >get a small switch/hub?
>>
>I think you're going to need smart gateways that keep each other apprised of
>their status. If/when one of the incoming lines fails - that gateway will
>need to forward its traffic to one of the other two. However, if I
>understand you correctly, the traffic is inbound to your ftp server rather
>than it being the origination point. If so, you'll need a gateway box that
>can handle all three inbound lines, recognize the loss of connectivity on
>each, and then load balance the traffic between the other two lines.
>
>JW
>
Each of the cards has a seperate private IP address which then gets
NATed to a Public IP address, each on a different ISP.
All I want is for the three cards to respond regardless is one goes
down. Right now if I unplug the network cable on eth2, all three
cards stop responding to PING on my LAN, instead of just the card with
the unplugged cable.
I'm trying to figure out why all three cards stop responding on their
unique IPs if the cable to eth2 is unplugged. For instance, the IPs
are 192.168.1.90 , 192.168.1.91, and 192.168.1.92. If the card
assigned .92 does not have a cable connected to the LAN, then ALL the
cards stop responding to ping and the whole machine drops off the
network.
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