Using the interface range command will save you time when configuring multiple ports with the same characteristics.

The ability to telnet into a Cisco switch greatly simplifies remote administration of the device. This recipe describes enabling telnet logins and password protecting them.

Switches maintain a database of MAC addresses, both manually configured (static) and dynamically learned entries. During troubleshooting, it may be helpful to investigate the entries in the MAC table.

Cisco devices allow password protection of console access. This recipe describes configuring the use of a password to protect the console of a Cisco switch.

Overview of how it layer-3 switches work. Catalyst Switches are normally used as Layer-3 switches. Thus, the switch can have a SUP engine ,a redundant SUP engine , a RSM module and layer-2 (ethernet or fast ethernet) ports.

Configuration for SPAN and RSPAN. SPAN mirrors a port within the same switch, while RSPAN mirrors a port in a remote switch.

The following recipe contains one method to protect against the addition of unauthorized switches to a Cisco Catalyst. This refers to the 6500 series, but it may be available on other platforms as well.

The following contains configuration notes for newer catalyst switches and switch modules.