Marcel Leuenberger writes:
Has anyone experience with a tool to simulate delays in packet
Nitpick... I think you mean "introduce artificial" or "emulate" rather than "simulate". For network simulation you could use something like the NS2 Network Simulator, which I'm sure has arbitrarily configurable delays/losses etc. per link.
forwarding - Especially to simulate high delays as they occur in satellite networks? Have anyone already used a free tool based on linux, freebsd, (windows).
Most people seem to use Dummynet for FreeBSD: http://info.iet.unipi.it/~luigi/ip_dummynet/
For Linux, there's NIST NET: http://cs.ecs.baylor.edu/~donahoo/tools/nistnet/
For Solaris, there's ONE (Ohio Network Emulator): http://masaka.cs.ohiou.edu/one/
Note that I don't have personal experience with any of these, but I know that at least Dummynet and NIST NET have succefully been used for research...
Regards,