Juniper Networks, Inc.

Dell Products Inc.

Texas Instruments Corporation

Harmeet Singh

Amit Arora

Sairam Neelam

Erin C Macneil

Prateek Halwe

Rahul Chandra Khali

Jimmy Jose

Digambar Yashwant Sawant

Bhagat Singh Mariappan

Rama Rao Bisa

Raveendra Torvi

Ashish Kumar

Wei Hong

Jason Matthew Young

Reji Thomas

Srihari Ramachandra Sangli

A Anis Ahmed

Pallavi Satpathy

Vasudevan Navaneetha Krishnan

Srikanth Venakta Gandiboyina

Vinod Arumugham Chettiar

Pravin Velumani

A network device may execute a master application shared with another network device via a session, and may receive, by a backup application replication kernel, a replicated data object. The backup application replication kernel may provide the replicated data object to a backup application, and may calculate a time delta between when the replicated data object is received and when the replicated data object is consumed by the backup application. The backup application replication kernel may determine whether the time delta exceeds a first threshold or a second threshold, and may generate a session flag based on the time delta exceeding the first threshold or the second threshold. The backup application replication kernel may provide the session flag to a master application replication kernel and to the backup application, and the master application replication kernel may provide details of the session to the master application and the backup application.

Making transmission control protocol (TCP) sessions robust in a socket replication environment

A computing device component monitoring system includes at least one certificate generation system, and a computing device that includes a first component and that is coupled to the at least one certificate generation system via a network. The computing device receives a first component verification certificate from the at least one certificate generation system that identifies a first component lifetime after which the first component in the computing device should be replaced, and stores the first component verification certificate in a database that is accessible to the computing device. The computing device determines that the first component lifetime has been exceeded, and identifies a first component alert policy in response. The computing device generates a first component alert based on the first component alert policy.

Computing device component monitoring system

A network device may establish, via a routing protocol daemon (RPD) of the network device, border gateway protocol (BGP) sockets with peer network devices and may establish a socket between the RPD and a periodic packet management daemon (PPMD) of the network device. The network device may provide file descriptors of the BGP sockets from the RPD to the PPMD, via the socket, and may provide, from the RPD and via the BGP sockets, non-keep alive protocol data units (PDUs) to the peer network devices. The network device may provide, from the PPMD and via the BGP sockets, keep alive PDUs to the peer network devices.

Increasing robustness of connections by offloading keep alive protocol data units

Methods and systems are provided for validating and registering an IHS (Information Handling System) and components of the IHS for technical support. Upon delivery and initialization of an IHS, an inventory certificate that was uploaded to the IHS during factory provisioning of the IHS is retrieved. The inventory certificate includes an inventory that identifies factory-installed hardware components in the IHS. The inventory also specifies whether a registration requirement has been specified for the IHS, such as to initiate technical support. While still operating a pre-boot validation process, an inventory is collected of the detected hardware components of the IHS. Based on the inventory certificate, the validation process confirms whether a detected hardware component is a factory-installed hardware component and determines whether registration is required. If required, registration of the IHS is initiated by the validation process and initialization of the IHS continues.

Validation and registration for information handling systems

The disclosure describes techniques that enable detection of memory leaks of software executing on devices within a computer network. An example network device includes memory and processing circuitry. The processing circuitry monitors a usage of the memory by a software component operating within the network device. The processing circuitry periodically determines a memory growth pattern score for the software component based on the usage of the memory. The processing circuitry also predicts whether the user-level process is experiencing a memory leak based on the memory growth pattern score. The processing circuitry applies confirmation criteria to current memory usage of the software component to confirm that the software component is experiencing the memory leak. When the software component is experiencing the memory leak, the processing circuitry generates an alert.

Memory leak detection using real-time memory growth pattern analysis

A wireless access point comprises a memory; and one or more processors operably coupled to the memory configured to: receive a first packet for an application; configure an initial packet flow for the application including a first forwarding action to send traffic for the application via a tunnel path; learn the application of the first packet; generate, based on a policy of the application, an entry in an application server address cache specifying an address of the application server and a second forwarding action to send traffic for the application via a local breakout path; receive a second packet for the application; and configure, in response to determining that a destination address of the second packet matches the entry in the application server address cache, a subsequent packet flow for the application including the second forwarding action to send traffic for the application via the local breakout path.

Application identification and path selection at a wireless access point for local network traffic breakout

A network device may monitor a TCP session with another network device, and may identify ingress and/or egress packets, a TCP header, and a socket of the TCP session. The network device may inspect the ingress and/or egress packets, the TCP header, and the socket to identify a zero window advertisement, details of a last quantity of packets sent or received, synchronize, finish, or reset packets sent or received, negotiated TCP options, or buffer space utilization, and may temporarily record identified data based on the inspection. The network device may detect a TCP session flap when a finish packet or a reset packet is identified and recorded, and may store, in a dead TCP session list, the identified data based on the TCP session flap being detected.

Retaining key parameters after a transmission control protocol (TCP) session flap

A network device may execute a master application communicating with another network device via a session, and may receive, by a backup application replication layer, a replicated data object. The backup application replication layer may provide the replicated data object to a backup application, and may calculate a time delta between when the replicated data object is received and when the replicated data object arrives at the backup application. The backup application replication layer may determine whether the time delta exceeds a first threshold or a second threshold, and may generate a session flag based on the time delta exceeding the first threshold or the second threshold. The backup application replication layer may provide the session flag to a master application replication layer and to the backup application, and the master application replication layer may provide details of the session to the master application and the backup application.

A method and network device for detecting a TCP socket failure is described. A network device may be configured to detect a failure of a link between a first node and a second node, determine one or more transmission control protocol (TCP) sockets of a plurality of TCP sockets on the first node that are communicating over the link between the first node and the second node, write information to a TCP stack for the determined one or more TCP sockets, the information indicating that the determined one or more TCP sockets have an error, and remediate the determined one or more TCP sockets in response to the information.

Propagating node failure errors to TCP sockets

In general, this disclosure describes a network device that checks consistency between routing objects in a routing information base (RIB), a forwarding information base (FIB), and packet forwarding engine (PFE) forwarding tables. A method includes generating a marker that causes a routing protocol daemon, a control plane kernel, and PFEs of a network device to calculate zonal checksums for a plurality of zones using consistency values for each routing object within a RIB, a FIB, and corresponding forwarding tables respectively. The method includes performing a consistency check on the RIB, the FIB, and the forwarding tables to determine whether the routing objects in each of the RIB, the FIB, and the forwarding tables are consistent with each other. The method includes, when the RIB, the FIB, and the forwarding tables are not consistent, performing an action related to at least one of RIB, the FIB, or the forwarding tables.

Route consistency checker for network devices

A method of noise filtering of a digital video sequence to reduce ghosting artifacts, the method including computing motion values for pixels in a frame of the digital video sequence based on a reference frame, computing blending factors for the pixels based on the motion values, generating filtered output pixel values by applying the blending factors to corresponding pixel values in the reference frame and the frame, wherein selected filtered output pixel values are converged toward corresponding pixel values in the frame to reduce ghosting artifacts, and outputting the filtered frame.

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Bengaluru, India

Harmeet Singh