all cisco 3600 series router chassis require a reliable earth ground connection. this chapter describes how to install and connect a ground wire for your cisco 3600 series router. it includes the following sections:

    . cisco 3620 and cisco 3640 chassis ground connection, page 3-21

    . cisco 3631 chassis ground connection, page 3-24

    . cisco 3660 chassis ground connection, page 3-25