Brocade Communications Systems, Inc.

Extreme Networks, Inc.

Avago Technologies International Sales Pte. Limited

Eswara Chinthalapati

Ivy Pei-Shan Hsu

Sanjeev Chhabria

Xiaochu Chen

Dilip Kumar

Sayed Mohd Saquib

Using a hash function, an L2/L3 switch can produce an FID for a data packet. The L2/L3 switch can select, from among potentially several stored VLAN flooding tables, a particular VLAN flooding table that is associated with a particular VLAN on which the data packet is to be carried. The rows of the particular VLAN flooding table can specify different combinations of the particular VLAN's egress ports. The L2/L3 switch can locate, in the particular VLAN flooding table, a particular row that specifies the FID. The L2/L3 switch can read, from the particular row, a specified subset of the egress ports that are associated with the particular VLAN. The L2/L3 switch can transmit copies of the data packet out each of the egress ports specified in the subset, toward analytic servers connected to those egress ports.

Ruled-based network traffic interception and distribution scheme

Using a hash function, an LLswitch can produce an FID for a data packet. The LLswitch can select, from among potentially several stored VLAN flooding tables, a particular VLAN flooding table that is associated with a particular VLAN on which the data packet is to be carried. The rows of the particular VLAN flooding table can specify different combinations of the particular VLAN's egress ports. The LLswitch can locate, in the particular VLAN flooding table, a particular row that specifies the FID. The LLswitch can read, from the particular row, a specified subset of the egress ports that are associated with the particular VLAN. The LLswitch can transmit copies of the data packet out each of the egress ports specified in the subset, toward analytic servers connected to those egress ports.

Techniques for performing flow-specific failure detection in SDN networks are provided. In one embodiment, a computer system (e.g., an SDN controller) can determine a flow to be monitored in a network. The computer system can then transmit first and second messages to first and second network devices in the network respectively, where the first network device is an upstream device in the flow, where the second network device is a downstream device in the flow, and where the first and second messages instruct the first and second network devices to collect local data rate information for the flow.

Flow-specific failure detection in SDN networks

Techniques for performing efficient topology failure detection in SDN networks are provided. In one embodiment, a computer system (e.g., an SDN controller) can transmit a first message to a first network device, where the first message instructs the first network device to begin sending probe packets to a second network device at a predetermined rate. The computer system can further transmit a second message to the second network device, where the second message instructs the second network device to monitor for the probe packets sent by the first network device and to notify the computer system when one or more of the probe packets are not received by the second network device. If the computer system receives such a notification from the second network device, the computer system can determine that a port, link, or node failure has occurred between the first and second network devices.

Efficient topology failure detection in SDN networks

Using a hash function, an L/Lswitch can produce an FID for a data packet. The L/Lswitch can select, from among potentially several stored VLAN flooding tables, a particular VLAN flooding table that is associated with a particular VLAN on which the data packet is to be carried. The rows of the particular VLAN flooding table can specify different combinations of the particular VLAN's egress ports. The L/Lswitch can locate, in the particular VLAN flooding table, a particular row that specifies the FID. The L/Lswitch can read, from the particular row, a specified subset of the egress ports that are associated with the particular VLAN. The L/Lswitch can transmit copies of the data packet out each of the egress ports specified in the subset, toward analytic servers connected to those egress ports.

Growing community of inventors

San Jose, CA, United States of America

Eswara Chinthalapati