Thousands of hosts on a gigabit LAN, maybe not

Sat May 9 01:55:16 UTC 2015

On 9 May 2015, at 1:53, John Levine wrote:

> What's the rule of thumb for number of hosts per switch, cascaded 
> switches vs. routers, and whatever else one needs to design a dense 
> network like this?

Most of the major switch vendors have design guides and other examples 
like this available (this one is Cisco-specific):

<http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/VMDC/3-0-1/DG/VMDC_3-0-1_DG/VMDC301_DG3.html>

Some organizations like Facebook have also taken the time to write up 
their approaches and make them publicly available:

<https://code.facebook.com/posts/360346274145943/introducing-data-center-fabric-the-next-generation-facebook-data-center-network/>

-----------------------------------
Roland Dobbins <rdobbins at arbor.net>