On 2003-07-27 Vineet Mehta wrote: > My collegue has a Linux machine which has 2 NIC's on it. What he did > was assign the IP's 192.168.0.6/24 and 192.168.0.7/24 to the NIC's. > And he was trying to ping the network but was getting errors (i dont > know the errors). > > ----------------- > | Switch | > |_________________| > | | > | | > | | > ------------------------------- > | NIC1 NIC2 | > |192.168.0.6/24 192.168.0.7/24| > | Machine | > |-----------------------------| > > I tried explaining him like this:-> > > Configuring the machine's network like this is not a big problem, coz > other machines on the network can still see these 2 IP's. But his > machine will not be able to reach other machines on the network coz 2 > NIC's point to the same network so Linux kernel would be confused for > which NIC to use to send packets.
Correct. Your machine can't have two routes pointing towards the same network. > If by any means we set the route to use ANY one NIC to reach the > network then there will be no errors. Probably (not sure about that). But you will at least double the traffic your machine causes (provided it works at all). > Am i right in this, or this is not possible AT ALL? I took my thought > from the concept of IP Aliasing. Why would he want to connect two Interfaces to the same network? The only reason I can think of is port-trunking, but in that case the operating system would handle both interfaces as one (AFAIK). Regards Ansgar Wiechers --------------------------------------------------------------------------- ----------------------------------------------------------------------------
