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It also can be used to limit the total number of devices plugged into a switch port , thereby protecting the switch from a MAC flooding attack as well as reducing the risks of rogue wireless access points or hubs . Any regular reader will know that we are not members of the Brass Ring fan club . Authentication refers to the authentication of users to access a specific device . After a specific timeframe , the aging feature removes the MAC address from the switch to allow another device to connect to the same port . This need for physical security is addressed by switches in the Cisco MDS 9000 Family . So , whether using a 3rd party application , or writing custom in-house applications to manage the storage network , the detailed device and topology information that can be gathered via these FC-GS-4 related MIBs allows the user to accurately create and audit a fabric topology and its registrants . Internet-savvy students rely on the Internet to help them do their schoolwork and for good reason . Specifically such functions include initial device configuration , setting and monitoring thresholds , and managing device system images or firmware . Managed with CiscoWorks , Cisco Catalyst family switches can be configured and managed to deliver end-to-end device , VLAN , traffic , and policy management .