SYSTEMS, METHODS, AND APPARATUS FOR ARP MEDIATION

摘要

An exemplary network controller may be configured to perform ARP mediation through passively learning MAC addresses on client sides and keeping track of IP/MAC/Attachment point associations, hijacking ARP requests received by the core nodes through a packet_in operation or a redirection to other agents, injecting proxy ARP replies that provide target MAC information without the actual target being involved, and possibly programming the network nodes with the static ARP responding rule for a specified duration.

主权项

1. A method for address resolution in a software defined network, the method comprising:
receiving an address resolution protocol request from a first client device at a first core node for a media access control address of a second client device; sending, by the first core node, a notification of the address resolution protocol request to a controller; determining, by the controller, if the second client device media access control address is stored in the controller; and sending, by the controller, an address resolution protocol reply to the first client device including the second client device media access control address when the controller determines the second client device media access control address is stored in the controller.