On Fri, Jun 15, 2012 at 11:54 PM, Joshua D'Alton <span dir="ltr"><<a href="mailto:joshua@railgun.com.au" target="_blank">joshua@railgun.com.au</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
For those interested, ignoring transmission/routing delays, 400m relates to about 1.5 micro seconds depending on the frequency and extact medium. Adding routing gear brings that up to about 200 micro seconds round trip.</blockquote>
<div><br>Some routers may take 198us to forward a packet. But for the L3 switches deployed by people who care about latency, the bar is currently at under 500ns forwrading latency (less than half a microsecond) for something that is a L3 switch with all features enabled.<br>
That latency is a moving target as there at least 3 different companies all competing building things of even lower forwarding latency.<br><br><br>cheers,<br><br>lincoln.<br></div></div>