Serverpoint.com architecture from server to the Internet, is as follows:

* Servers are connected to edge Cisco or Foundry switches
* Each edge switch is connected to two independent core switches
* Each core switch, besides being connected to each other, is connected to an independent router
* Their routers are each connected to independent Internet providers, coming into our building through separate areas and through independent underground fiber lines.
Is this a standard scheme of the company's infrastructure?