On 2011-01-19 00:48, Glen Wernersbach wrote: > Hi All, > > Well, I now have script to the point where I an ping non RTNET devices. I am > now trying to get my RTNET stack to accept and send TCP and UDP packets > from/to non RTNET stack devices. > > Again, I am only using RTNET for the real time NIC, UDP and TCP drivers. > > The Ethernet IP spec makes use of Administrative scoping broad cast address. > To get my program working on non RTNET stack, I have to issue this routing > command: > route add -net 224.0.0.0 netmask 240.0.0.0 dev eth3 > > While the actual scope could be less than the command above, do you know how > I would do the same command with RTROUTE which has difference syntax. >
For sending any IP frame to and RTnet segment, you need to specify both
the destination device ("rtethX") and the destination MAC which is
FF:FF:FF:FF:FF:FF in this case. However, you can't specify this for a
complete range of addresses like in the above case, you need to tell the
precise 224.x.x.x address(es). Network routes are also possible, but
they are then targeting a specific gateway via its IP.
More on this in Documentation/README.routing.
Jan
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