My first steps with EnergyWise

Green IT was one of the hot issues back in 2009 during the hype of server virtualization and the introduction of 10 Gig. During the Cisco Networks in 2009 (Barcelona) Cisco EnergyWise was then greatly pushed as an innovation and as a cornerstone for Smart Buildings and Green IT.
The principle thought behind the technology is that the network can also communicate with the endpoints connected to the network and that the network can ask / tell the endpoints to lower down the power consumption in order to reduce the power footprint of the environment. For example, at night time IP Phones in an office network don’t need to have full power, as nobody is working. So EnergyWise can power down the IP phones during the night.
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DMVPN DualHub EIGRP Traffic Engineering

With the advance of vDSL, Fiber, cable Internet and the appropriate SLA’s bussiness Internet connections have become increasingly reliable. By choosing the local ISP’s carefully it is much more interesting for a company to replace the MPLS connections for an Overlay network based on redundant Internet connections. As a result businesses quite often obtain a higher speed connection for much lower rates. One of the business cases I made in 2006/2007 had a 70% decrease in annual costs compared to their European WAN line based on an MPLS service provider including High Availability. Continue reading “DMVPN DualHub EIGRP Traffic Engineering”