Gigamon Inc.

Tanmay Kishore

Dominick A Cafarelli

Shehzad Merchant

Sreekanth Settipalli

Ashutosh Alawani

Zbigniew Sufleta

Yan Xiu

Ramakrishna Manchiraju-Venkata

Hung Phi Nguyen

Hung Chuen Jason Lee

Sitti Amarittapark

Jason Lee

A method performed by a network device that taps to a network having a routing device, includes: receiving a first packet tapped from the network; determining a first information regarding an input interface of the routing device based on a destination address of the first packet; receiving a second packet tapped from the network; determining a second information regarding an output interface of the routing device based on a source address of the second packet; determining a first CRC for the first packet; determining a second CRC for the second packet; and comparing the first CRC with the second CRC at the network device to determine whether the first packet and the second packet are the same.

Systems and methods for determining input and output interfaces of a network device and copies of a same packet going through the network device

Embodiments are disclosed for monitoring the performance of an in-line tool without adding data to network traffic routed through the in-line tool. In some embodiments, performance of the in-line tool is based on a measured latency introduced by the processing of packets through the in-line tool. In some embodiments, network traffic is adaptively routed based on the measured latency at the in-line tool.

In-line tool performance monitoring and adaptive packet routing

Introduced herein is a technology for a network switch device to route network packets through a inline tool, without introducing additional information to the network packets. The technology records an association between an input network port and a signature (e.g., source MAC address) of the network packet, before forwarding the packet to the inline tool. When receiving the packet back from the inline tool, the network device recognizes that the packet signature is associated with the input network port, and that the input network port is paired with a particular output network port. Thus, the network device identifies the output network port for sending the packet, without modifying contents of the packet.

Routing network traffic packets through a shared inline tool

Systems and methods for determining input and out interfaces of a network device and copies of a same packet going through the network device

A method performed by a network device that taps to a network having a routing device, includes: determining a first information regarding an input interface of the routing device for a packet; determining a second information regarding an output interface of the routing device for the packet; determining whether the packet belongs to a user-defined category based on one or more mapping formation defined at the network device; and storing the packet, the first information regarding the input interface of the routing device, the second information regarding the output interface of the routing device, and information regarding the user-defined category in a non-transitory medium in association with each other.

Systems and methods for processing packets tapped from a network

Growing community of inventors

Fremont, CA, United States of America

Tanmay Kishore