Nov 20 2008   7:54AM GMT

What is Dynamic Host Configuration Protocol (DHCP) Snooping?

Posted by: Yasir Irfan
Network Security, Security, DHCP, Switches, Cisco, Switching, Cisco 2960, Cisco 6500, Cisco Tips, Cisco 3560, Cisco 3745, Cisco Systems, Cisco 6500 Series Catalyst Switch, Cisco 6503, Cisco Catalyst 6503-E Switch, Cisco Catalyst 6506-E Switch, Cisco Catalyst 6509-V-E Switch, Cisco Catalyst 6509-E Switch, Cisco Catalyst 6513 Switch, DHCP Snooping

Dynamic Host Configuration Protocol (DHCP) Snooping is a security feature which filters untrusted DHCP messages, this security feature can protects the devices on the network from associating with an unauthorized DHCP server. When the Dynamic Host Configuration Protocol (DHCP) Snooping feature is enabled on a Cisco Switch , the Cisco Switch builds a table of MAC address, IP address lease time , binding type and interface information. In coming posts I will try to explain to how to enable and configure the Dynamic Host Configuration Protocol (DHCP) snooping security feature in a Cisco Switch.