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There are many companies and other means of acquiring used and refurbished Cisco equipment on the Internet. These include highly regarded businesses that buy up used gear, inspect and test it, then resell it. Often times, this used gear can include extended warranties in case of failure. Other methods of buying used equipment are from auction sites such as Ebay or online classified ads a la craigslist. I have used all of these methods for acquiring Cisco Systems equipment. Here are three situations where I felt purchasing used Cisco equipment was justifiable.