Gigamon Inc.

Shehzad Merchant

Dominick A Cafarelli

Tanmay Kishore

Sreekanth Settipalli

Ashutosh Alawani

Ning Wang

David B Cheung

Murali Bommana

Qi Ming Ng

Hung Phi Nguyen

Jay Han Yu

Patrick Allen Riley

Hoang Nguyen Bao Nguyen

Simon H Gibson

A method performed by a network device includes: receiving a first packet by the network device, wherein the first packet is tapped from a network; identifying a session to which the first packet belongs when the first packet has one or more values that at least partially match one or more terms, wherein the act of identifying the session is performed by the network device; receiving a second packet by the network device; determining whether the second packet belongs to the session; and performing a packet processing action by the network device based on the identified session; wherein the session is identified based on a first criterion, and the act of determining whether the second packet belongs to the session is performed based on a second criterion that is different from the first criterion.

Session aware adaptive packet filtering

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

Techniques are disclosed for monitoring usage of network traffic rules applied by devices on a computer network. Operations in accordance with the disclosed techniques can be performed at one or more network visibility nodes that operate as part of a visibility fabric, for example for monitoring traffic on the network. In certain embodiments, packets associated with the traffic are received at a network visibility node communicatively coupled to the network that is operable to enable visibility across the network. The network visibility node can access network traffic rules that mirror the network traffic rules applied at devices on the network. The network visibility node can further process the received packets using the accessed network traffic rules to identify packets or flows of packets that satisfy criteria associated with the accessed network traffic rules.

Analysis of network traffic rules at a network visibility node

A network switch apparatus, includes: a network port configured to receive a packet; instrument ports configured to communicate with respective network monitoring instruments; a packet duplication module configured to copy the packet to provide multiple packets that are identical to each other: a tagging module configured to tag the multiple packets with different respective identifiers to obtain tagged packets; and a processing unit coupled to the instrument ports; wherein the processing unit is configured to determine whether a first one of the tagged packets satisfies a first criterion, whether a second one of the tagged packets satisfies a second criterion, process the first one of the tagged packets in a first manner if the first one of the tagged packets satisfies the first criterion, and process the second one of the tagged packets in a second manner if the second one of the tagged packets satisfies the second criterion.

Systems and methods for processing packets

A network device includes: one or more ports for tapping to a network; and a processing unit configured for receiving a first packet tapped from the network, wherein the first packet is received at a first network port of the network device; determining a first identity of a first network equipment associated with the first packet based on a discovery protocol; and associating the first identity of the first network equipment with a first identity of the first network port of the network device at which the first packet is received; and a non-transitory medium for storing the first identity of the first network equipment and the first identity of the first network port in association with each other.

Systems and methods for processing packets tapped from a network using discovery protocol

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

A method of implementing map sharing for a network switch appliance, the network switch appliance having a plurality of network ports and a plurality of instrument ports, the method includes: receiving a first input for creating a map for the network switch appliance, wherein the map comprises one or more packet processing rules, and wherein the act of receiving the first input is performed by a processing unit; receiving a second input for prescribing a map sharing privilege for the map; and storing the map and the map sharing privilege in association with the map in a non-transitory medium.

Map sharing for a switch device

A network switch apparatus, includes: a network port configured to receive a packet; instrument ports configured to communicate with respective network monitoring instruments; a packet duplication module configured to copy the packet to provide multiple packets that are identical to each other; a tagging module configured to tag the multiple packets with different respective identifiers to obtain tagged packets; and a processing unit coupled to the instrument ports; wherein the processing unit is configured to determine whether a first one of the tagged packets satisfies a first criterion, whether a second one of the tagged packets satisfies a second criterion, process the first one of the tagged packets in a first manner if the first one of the tagged packets satisfies the first criterion, and process the second one of the tagged packets in a second manner if the second one of the tagged packets satisfies the second criterion.

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Los Altos, CA, United States of America

Shehzad Merchant