North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: [NANOG] Introducing latency for testing?
Joel Jaeggli (joelja) writes: > The freebsd dummynet driver is all about latency simulation... > > http://www.scalabledesign.com/articles/dummynet.html > > linux has a netem which can do the same thing > > http://www.linux-foundation.org/en/Net:Netem dummynet is significantly easier to set up, especially for doing things like random packet reordering / packet loss (using the 'prob' rule of ipfw + delay property with pipes). ipfw pipe 42 config bw 1024Kbit/s delay 6ms ipfw pipe 666 config bw 64Kbit/s delay 350ms ipfw add 10 prob 0.05 deny ip from 1.2.3.4 to any ipfw add 10 prob 0.8 pipe 666 ip from A to B ipfw add 10 prob 0.5 pipe 42 ip from A to B ... and it runs. _______________________________________________ NANOG mailing list [email protected] http://mailman.nanog.org/mailman/listinfo/nanog
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