Dual NICs in BSD
Ruben de Groot
mail25 at bzerk.org
Fri Nov 19 05:50:51 PST 2004
On Fri, Nov 19, 2004 at 07:09:02AM -0600, Trevor B. Sullivan typed:
> Hi, I have a Compaq Proliant 3000 server with a fresh install of FreeBSD
> 5.2.1 on it. It has an Intel Dual-port NIC (of which I'm using one
> port), and a Netgear GA620 Gigabit fiber card. The copper port is
> referred to as fxp0 and the fiber, ti0. I'm having a problem getting the
> two network connections to work together with the same network address.
> My private subnet is 10.100.100/24, though if I try to set two adapters
> each with their own IP but on the same network, I get "File already
> exists" or something to that effect. The default route to my m0n0wall
> box is set through fxp0, and I can get ti0 to work if I set the network
> addr to 255.255.255.255, but then if my copper interface goes down
> (using "ifconfig fxp0 down" as test), the fiber interface will not then
> connect. My basic question is...how do I get two independent cards to
> have their own IP address on the same network address? Thanks in advance
> for assistance.
Assuming you mean netmask instead of network address; how do you think the
kernel is supposed to know which of the 2 interfaces to use for outgoing
packets if both are on the same subnet with the same netmask?
> Trevor B. Sullivan
> Information Technology
> Baxter & Woodman, Inc.
> Phone: (815) 459-1260 x1337
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