Juniper Networks, Inc.

Leland Stanford Junior University

Truman Joe

Stephen Wilson Turner

Wendy R Cartee

Sanjay Kalra

Hsien-Chung Woo

Bharani Chadalavada

Troy M Sheets

Barun Kar

Geetha Ramaian

Anoop Gupta

Eswaran Srinivasan

John W Stewart, Iii

Allisa Lee

Sridatta Bairy

Moshiko Nayman

A disclosed computing device capable of intelligent power management of underutilized packet forwarding devices may include (1) a plurality of packet forwarding devices and (2) a controller communicatively coupled to the plurality of packet forwarding devices, wherein the controller is programmed to (A) search for configuration data associated with the plurality of packet forwarding devices, (B) determine, based at least in part on the search for the configuration data, that a packet forwarding device included in the plurality of packet forwarding devices is underutilized, and (C) reduce power consumption of the packet forwarding device in response to determining that the packet forwarding device is underutilized. Various other apparatuses, systems, and methods are also disclosed.

Apparatus, system, and method for intelligent power management of underutilized packet forwarding devices

Techniques are described for monitoring performance of a network. Particularly, network devices within the network exchange routing communications in accordance with one or more routing protocols, such as the Border Gateway Protocol (BGP), to automatically establish a community for monitoring performance throughout the network. Upon establishing the community, the network devices of the community exchange performance probes to collect comprehensive performance information for the network. This performance information may be aggregated via one or more computing devices. Using the aggregated performance information, numerous network performance characteristics may be computed, including delay, jitter, throughput, availability and packet loss.

Automatic establishment of network performance monitoring communities using routing protocols

A network router includes a set of interface cards to receive packets from a network, and a set of accounting modules to calculate flow statistics for the packets. The router further includes a control unit to adaptively update routing information in response to the calculated flow statistics, and to route the packets in accordance with the routing information. The control unit identifies potentially malicious packet flows for the received packets based on the flow statistics, and applies an intercept filter to intercept the packets of the identified packet flows. The control unit analyzes the intercepted packets in real-time to determine the presence of a network event, and updates the routing information based on the determination, e.g., by terminating routing for packets associated with malicious packet flows. In this manner, the router may adaptively respond to network events, such as network security violations.

Adaptive network router

A device comprises a programmable communication interface and a processor. The programmable communication interface communicates data via a set of signals. The processor configures the programmable communication interface to communicate the data in accordance with a programmed override state for at least one of the signals and actual states for the remaining signals. The programmable communication interface may be configured, for example, to programmably treat an overridden signal as asserted or de-asserted regardless of actual voltages present on one or more electrical connectors associated with the overridden signal. As a result, incorrectly wired electrical connectors of the programmable communication interface may be programmably overridden. Consequently, a technician need not manually rewire the programmable communication interface.

Programmable communication interface

A network device integrates accounting functionality for generation of flow statistics with packet intercept functionality to provide a comprehensive traffic analysis environment. The device comprises a set of network interface cards to receive packets from a network, and a set of accounting service cards to calculate flow statistics for the packets. The device further comprises a control unit to receive the network packets from the interface cards and distribute the packets to the set of accounting service cards. The accounting service card comprises an interface for insertion within a slot of a network device. Accounting service cards may be added to easily scale the network device to support higher bandwidth communication links, such as OC-3, OC-12, OC048 and higher rate links. Additional accounting service cards may be used for purposes of redundancy to support continuous, uninterrupted packet processing and accounting in the event of a card failure.

Network device having accounting service card

A network router integrates routing functionality with accounting functionality for generation of flow statistics, and provides packet intercept functionality to provide a comprehensive traffic analysis environment. The router includes a set of interface cards to receive packets from a network, and a control unit to generate a first and second duplicate stream of the packets. The control unit provides the packets of the first stream to accounting modules for calculation of flow statistics, and applies an intercept filter to intercept at least a subset of the packets of the second stream for selected packet flows.

Network router having integrated flow accounting and packet interception

A system for processing packets of data may include a gather unit configured to gather data elements from a number of non-contiguous locations in a packet of data. The gather unit may place the data elements in a number of contiguous locations in the packet. A processor may be configured to process the data elements from the number of contiguous locations to generate processed data elements. A scatter unit may be configured to scatter the processed data elements to the number of non-contiguous locations in the packet.

Scattering and gathering data for faster processing

A flat directory organization is used to create a flat cache-only multi-processor architecture. Directory memories are uniformly distributed among all the processor nodes. Every valid memory partition has an associated physical address, which is used to determine a statically assigned home node for that partition. The home directory at the home node is the only directory that maintains state information for that partition. The home directory keeps track of which nodes have a copy of a partition and the current state of that partition. The flat directory organization does not depend on any specific interconnection. Any scalable network can be used to interconnect the processing nodes.

Growing community of inventors

Mountain View, CA, United States of America

Truman Joe