We CAN have 2 Ethernet interfaces with different IP addresses on the same subnet. It's
NOT impossible at all. Nothing prevents this.
BUT...
What's the added value? In one of the companies I've been working for, some years ago,
we had servers configured that way.
Guess what? It didn't bring any added value. Why? Because of the technology at that
time : old servers, shared Ethernet,...
Let's have a look at the technology.
Outgoing frames will just use one interface. They will not be sent twice on the
network. So, no added value.
Incoming frames will depend on the kind of network : shared or switched Ethernet.
Shared : one frame can travel on the network at a time. So, no added value.
Switched : OK, 2 frames can simultaneously reach the 2 interfaces. So, the added value
will depend on the server...
Old technology : old server, old processor, old software : no ability to handle such
traffic. So, no added value.
New technology : new server, new processor, new software : OK, it will be able to
handle such traffic.
In conclusion : nowadays, it can bring some added value to use 2 interfaces on a big
strong multi-processor server in a switched fast Ethernet environment.
Hope this answers your question.
E.T.
P.S.: in such a case, DISABLE routing between the 2 interfaces, and do NOT install any
routing protocol (RIP,...).
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Hi all,
I search why we can't have two ethernet interfaces(with different IP address
of course) on the same subnet?
I know it's impossible but why?
Thank you.
BR, Fay�al
