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The Greening of IT
236 How Companies Can Make a Difference for the Environment

that it is configured off for ports that do not use it. When provisioning
the power supply of a new modular switch, keep in mind that not all
ports will require PoE.
■ Properly place all components to efficiently draw in cool air and
exhaust hot air. Although components might have been placed correctly
when first installed, the addition or removal of adjacent equipment
might have resulted in less-efficient airflow. Use blank panels or move
components to fill in gaps in racks that allow cool and hot air to mix.
■ Remove unnecessary terminals from switch console ports. Most
switch management is done via the network, but a console port terminal
might still be in place and powered up even though no longer needed. If
for some reason it must be left in place, shut it off.
■ Conduct a component-by-component review of your customer’s
network to identify additional ways to lower energy costs. Many
methods of achieving lower energy costs are common sense and will
appear obvious when identified. While reviewing the customer’s net-
work, you can also suggest equipment upgrades and operational
changes that will result in improved network operation. ptg