Big Switch Networks, Inc.

Brocade Communications Systems, Inc.

Brocade Communication Systems LLC

Ning Song

Srinivasan Ramasubramanian

Richard Lane

Shunjia Yu

Mythilikanth Raman

Vardarajan Venkatesh

Robert Wesley Sherwood

Rajneesh Bajpai

Tse Yu Lei

Kenneth Hsinchao Chiang

Mary Preeti Manohar

Kiran Poola

Sudeep Modi

Gregor Maier

Mei Yang

In various example embodiments, a system, a method, and a machine readable medium to manage multicast traffic are disclosed. The system includes a controller server for receiving first multicast group member information and for providing centralized control of a network. The first multicast group member information is received from a first end-host computer and received at the controller server responsive to a first packet forwarding system identifying the first end-host computer is joining a first multicast group on a first virtual network. The controller server generates a first multicast tree and communicates a first network configuration message to at least one packet forwarding system of the first plurality of packet forwarding systems. The first network configuration message includes a packet flow table entry enabling configuration of a flow table to enable communication of multicast traffic for the first multicast group over a portion of the first multicast tree.

Systems and methods to manage multicast traffic

Methods, systems, and computer programs are presented for distributing network address translation (NAT) operations to a plurality of network devices on a network. One method includes an operation for identifying, by a controller that controls a network fabric, a plurality of switches in the network fabric, each switch having a module for NAT and being configured to forward packets received at the switch. The controller identifies hosts having at least one internal Internet Protocol (IP) address, and for each of the hosts, the controller selects one of the switches from the plurality of switches for performing the NAT for the host. Further, the controller configures the network fabric to cause the selected switch to perform the NAT for the host to enable the host to communicate with an external network. In case of switch failure, the system reallocates NAT loads to other switches for high availability.

Systems and methods for network address translation

In various example embodiments, a system and method for optimizing management of a multicast tree are disclosed. The system receives first multicast group member information, from over a network and via a first packet forwarding system, at a controller server that provides for control of a network comprised of a first virtual local area network including a first packet forwarding system, the first multicast group member information being received by the first packet forwarding system and describing a first end-host computer as joining a first multicast group on the first virtual local area network. The system generates a multicast tree, at the controller server, and communicates a network configuration message to at least one packet forwarding system of a first plurality of packet forwarding systems to enable communication of the multicast traffic for the first multicast group over a portion of the multicast tree.

One embodiment of the present invention provides a switch. The switch includes a local database, a packet processor, a data management module, and a tree construction module. The packet processor extracts spanning tree information associated with a remote switch. The data management module stores the extracted spanning tree information in the local database. The tree construction module assigns an interface state associated with a spanning tree to a local interface based on the extracted spanning tree information.

Spanning-tree based loop detection for an ethernet fabric switch

Growing community of inventors

Milpitas, CA, United States of America

Ning Song