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Not all jumper tables look alike!

Dual Inline Package (DIP) Switches


To create an On or Off state, you slide or rock a DIP switch (as shown in Figure 6.13), depending on whether it is a slider or rocker type. Unlike a jumper, it is impossible to lose a DIP switch. Nevertheless, DIP switches are more expensive, and so some manufacturers prefer jumpers.


At first glance, network nirvana may seem to be at hand with DIP switches. In fact, nothing could be further from the truth. Depending on the make and model of a NIC, it may be just as easy or ugly to configure, depending on the card and how well it is labeled and documented.



DIP switches are very small and, as such, it is next to impossible to use your fingers to move the switch. You should use a small probe or paper clip to move them. Never use a pencil because the lead tip could break off inside the switch.




NIC Documentation


One item many people overlook when configuring a NIC is the documentation. Attempting to configure a device such as a NIC without documentation is an exercise in futility. The permutations, while not technically endless, are numerous enough that it could take several hours to find even a pattern to the settings. This is no fun whatsoever and is completely avoidable if you save the documentation for all devices in each client or server in your domain.

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