Juniper Networks, Inc.

Cisco Technology, Inc.

Yulianto Ko

Manoj Apte

Saravanan Deenadayalan

Sandeep Jain

Fritz Budiyanto

Senthil Kumar Duraiswamy

Bruce McLoughlin

Qizhong Chen

Gajendra Shukla

Sureshkumar Nedunchezhian

Jyh Wen Simon Chen

A data packet is received, at a parent switching device, from a first host device via a remote switching device. The data packet has a first source media access control (MAC) address corresponding to the first host device and information indicative that the data packet passed through the remote switching device via a first port. An entry is added to a parent switching table in the parent switching device, the parent switching table associating the first MAC address and the first port of the remote switching device with one another. A switching table entry update message is sent to the remote switching device indicating that the first MAC address and the first port are associated with one another so as to enable a subsequent data packet destined for the first host device and received at the remote switching device to be switched directly to the first host.

Local packet switching at a satellite device

Methods and systems are providing for configuring a port on a network device for communication with a port on a remote device. In one example, the network device receives, by a local port, a message from a physical coding sublayer (PCS) transmitter on the remote partner device. In one aspect, a port configuration module partitions the port to transfer data on a plurality of sub-ports each having a second data transfer rate if it is determined, by the network device that a local PCS receiver failed to align data received in the message. In another aspect, the port configuration module aggregates the plurality of sub-ports of the port to transfer data on a port having the first data transfer rate if it is determined, by the network device, that the local PCS receiver detected a code violation error in the message on at least one of the plurality of sub-links.

Method, system and logic for configuring a local link based on a remote link partner

A network device comprises a service card (e.g., a dynamic flow capture (DFC) service card) executing a communication protocol to receive, from one or more control sources, flow capture information specifying at least one destination and criteria for matching one or more packet flows. The network device includes a network interface card to receive a packet from a network, a packet replication module to replicate the packet, and a control unit to provide the replicated packet from the interface card to the DFC service card. The network device includes a filter cache that caches flow capture information recently received from the CSs. The network device may provide real-time intercept and relaying of specified network-based communications. Moreover, the techniques described herein allow CSs to tap packet flows with little delay after specifying flow capture information, e.g., within 50 milliseconds, even under high-volume networks.

Network device having service card for intercept and monitoring of packet flows

A network device comprises a service card (e.g., a lawful intercept (LI) service card) executing a communication protocol to receive, from one or more sources (e.g., law enforcement agents), intercept information specifying at least one destination and criteria for matching one or more packet flows. The network device further includes a network interface card to receive a packet from a network, and a control unit to provide the packet from the interface card to the LI service card. The LI service card executes a flow match detection module that, when the packet matches the criteria of the intercept information, forwards the packet to the destination specified by the intercept information. The network device may provide real-time intercept and relaying of specified network-based communications. Moreover, the techniques described herein allow LEAs to tap packet flows with little delay after specifying intercept information, e.g., within 50 milliseconds, even under high-volume networks.

Network device having service card for lawful intercept and monitoring of packet flows

Network device having service card for dynamic flow capture and monitoring of packet flows

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Fremont, CA, United States of America

Yulianto Ko