[NANOG] Introducing latency for testing?

Fri May 2 20:26:01 UTC 2008

On Fri, May 02, 2008 at 01:12:52PM -0700,
 Mike Lyon <mike.lyon at gmail.com> wrote 
 a message of 15 lines which said:

> So I want to mimic some latency in a test network for DB replication.
> I am wondering what other's have used for this? Obviously, the best
> way to would be to actually have one box across the US or across the
> globe to actually test against but what if you don't have that? Are
> there any GPL software router solutions that would allow you to tweak
> the latency in between the two test boxes?

I use and like FreeBSD's dummynet:

http://info.iet.unipi.it/~luigi/ip_dummynet/

Highly recommended.