Re: [ns] Date: Tue, 3 Apr 2001 07:20:28 -0700

[John Heidemann <johnh@ISI.EDU>]

>...
>We are conducting a study that requires the use of 2 NIC card on two
>different IP addresses.   We want to use NSE to capture both UDP broadcast
>and multicast network traffic from one NIC card passing it through a
>simulated NS network (WAN or LAN) then sending the packet out the second NIC
>card.  The topology ideas for the NS simulation are endless but their would
>be one NIC card for input from a live network and one NIC card for output to
>a live network.
>
>Reading the NSE documentation I was led to believe that NSE had this
>capability.  After a lot of work and E-mails to the NS user group it appears
>this function was never tested or verified to work properly.  Well it
>appears the user group is correct using two NIC card and NSE dose not work
>correctly.
>
>My question to the group is what would it take to get NSE to properly use
>two NIC cards in the scenario I have mentioned above.  I believe this could
>be a very useful feature of NSE for other user as well.  To those that
>modify the code of NS and NSE could you please post a response on wither
>this is a good feature and if so how long and what would it take to
>implement this in NSE.

I very much agree with you that this would be a good feature; I'd love
to see it enabled in ns.

As for evaluating how long it would take to fix this, it's very hard
to say.  This is probably not a lot of code, but because it involves
how nse interacts with the OS the hard part is figuring exactly what
needs to get changed to make it work.

   -John Heidemann