Two IP interfaces in the same subnet: possible ?

From: Thomas Leitner <tom_at_radar.tu-graz.ac.at>
Date: Tue, 17 Aug 1999 20:36:02 +0200 (MET DST)

Hi,

I'd need a quick answer to this: Tomorrow I'll put in a second
ethernet card into a DEC3000/600 in order to have an isolated LAN
to a real-time device. Currently all nodes are in the same subnet
like this:
                 ln0
        DEC 3000 ----!
        RT-DEVICE ---!
WAN---- ROUTER ------!
           1 LAN SEGMENT, 1 IP Subnet

What I have in mind is this:

                  ln1 ln0
              !------ DEC 3000 ----!
   RT-DEVICE -! ROUTER ------!
           LAN SEG 2 LAN SEG 1
                    1 IP Subnet

Currently the DEC 3000 has the default route set to the Router.

Question: Can I just keep the IP address of the RT-DEVICE, assign a free
IP address in the same subnet to ln1 and define a static host route to the
RT-DEVICE ? Or differently put: Can I have two IP interfaces in the same
IP Subnet? Will the static host route have priority over the default route?

Thanks // Tom

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Received on Tue Aug 17 1999 - 18:38:41 NZST