The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2014
Filed:
Oct. 14, 2011
Kanzhe Jiang, Los Altos Hills, CA (US);
Shudong Zhou, Fremont, CA (US);
Robert Edward Adams, San Mateo, CA (US);
Mandeep Singh Dhami, San Jose, CA (US);
Alexander Stafford David Reimers, Palo Alto, CA (US);
Kanzhe Jiang, Los Altos Hills, CA (US);
Shudong Zhou, Fremont, CA (US);
Robert Edward Adams, San Mateo, CA (US);
Mandeep Singh Dhami, San Jose, CA (US);
Alexander Stafford David Reimers, Palo Alto, CA (US);
Big Switch Networks, Inc., Santa Clara, CA (US);
Abstract
A controller may help reduce network traffic that is associated with broadcasting of Dynamic Host Configuration Protocol (DHCP) packets by converting broadcast DHCP packets into unicast DHCP packets and forwarding the unicast DHCP packets to appropriate DHCP servers. The servers may be identified from a database of servers that is updated with DHCP server address information based on DHCP reply packets that are received by the controller from servers in the network. To convert DHCP request packets into unicast packets, the controller may modify address header fields of the packets such as Ethernet addresses and Internet Protocol (IP) addresses. The controller may forward the modified DHCP request packets to the server by providing packet forwarding rules such as flow table entries to the switches or by forwarding the modified DHCP request packets through the controller.