Port bounce with CoA requests and framed-IPv6-address RADIUS attribute for AAA

Change of Authorization (CoA) requests are RADIUS messages sent from the authentication, authorization, and accounting (AAA) server to the switch. They are typically used to dynamically change the VLAN for the host based on device profiling. End devices such as printers do not have a mechanism to detect the VLAN change, so they do not renew the lease for their DHCP address in the new VLAN. The port bounce feature is used to force the end device to initiate DHCP re-negotiation by causing a link flap on the authenticated port. There is no configuration required to enable the port bounce feature. Framed-IPv6-Address is an additional RADIUS attribute to support clients with an IPv6 address. The attribute is included in the Access-Request message sent from the client to the AAA server.