Juniper Networks Patent Grants

Mesh network of simple nodes with centralized control

Granted: April 25, 2017
Patent Number: 9634928
A mesh network of wired and/or wireless nodes is described in which a centralized controller provides seamless end-to-end service from the edge of the mesh network to mesh nodes located proximate to subscriber devices. The controller operates to provide a central configuration point for configuring forwarding planes of the mesh nodes of the mesh network, so as to set up transport data channels to transport traffic from the edge nodes via the mesh nodes to the subscriber devices.

Service chaining across multiple networks

Granted: April 25, 2017
Patent Number: 9634936
In some examples, a controller comprises one or more processors; a control unit configured to obtain, from a router in a first network, a route that specifies a next hop to an address prefix reachable by the first network; and a service chain unit configured to generate a modified route that specifies a service node as the next hop for the address prefix, wherein the service node is external to the first network, and wherein the control unit is further configured to send the modified…

Methods and apparatus for controlling wireless access points

Granted: April 25, 2017
Patent Number: 9635663
In some embodiments, an apparatus comprises of a first Control And Provisioning of Wireless Access Points (CAPWAP) module implemented in at least one of a memory or a processing device that is configured to be designated as a backup control module for a wireless access point during a first time period. The first CAPWAP control module is configured to receive state information associated with the wireless access point during the first time period from a second CAPWAP control module. The…

Designated forwarder election for multi-homed data center interconnect using multicast routing protocol state information

Granted: April 18, 2017
Patent Number: 9628409
Techniques are described for supporting designated forwarder election for a multi-homed Ethernet virtual private network (EVPN) data center interconnect (DCI) between multiple data centers by leveraging and utilizing adjacency state information learned from a multicast routing protocol that controls multicast distribution within an underlying transport network of a local data center. For example, a set or routers operating to provide a multi-homed EVPN DCI may utilize adjacency state…

Methods and apparatus for improved access to shared memory

Granted: April 11, 2017
Patent Number: 9619398
In one embodiment, a method includes receive a translation vector, selecting a translation entry from a plurality of translation entries, and determining whether the translation entry is associated with a first identifier class or a second identifier class. The translation vector includes a first identifier, a second identifier, and a virtual memory identifier. The first identifier is associated with a first identifier class, and the second identifier is associated with a second…

Apparatus and method of compensating for clock frequency and phase variations by processing packet delay values

Granted: April 11, 2017
Patent Number: 9621290
An apparatus and method are described for compensating for frequency and phase variations of electronic components by processing packet delay values. In one embodiment, a packet delay determination module determines packet delay values based on time values associated with a first and a second electronic component. A packet delay selection module selects a subset of the packet delay values based on the maximum frequency drift of the first electronic component. A statistical parameter…

Systems and methods for prognostic network management

Granted: April 11, 2017
Patent Number: 9621421
A computer-implemented method for prognostic network management may include (1) monitoring a health indicator of a physical component of a device in a network, (2) using the health indicator to estimate a remaining useful life of the physical component, (3) detecting that the remaining useful life of the physical component has reached a predetermined threshold, and (4) reconfiguring the network in response to detecting that the remaining useful life of the physical component has reached…

Application-layer traffic optimization service map updates

Granted: April 11, 2017
Patent Number: 9621449
Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as preferences of network resources with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that implements enhancements to the ALTO service to enable…

Access point name mappings for a layer two wireless access network

Granted: April 11, 2017
Patent Number: 9622143
In general, techniques are described for using virtual local area networks (VLANs) to facilitate packet forwarding between wireless endpoint devices attached to a wireless local area network (WLAN) access network and one or more mobile gateways providing access to packet data network services. For example, a wireless access gateway includes an upstream interface for a mobility tunnel to a mobile gateway of a mobile service provider network and a downstream interface for a WLAN access…

Deterministic network address and port translation

Granted: April 4, 2017
Patent Number: 9614761
A source network address and port translation (NAPT) mechanism is described that reduces or eliminates the need to log any NAT translations. As described herein, a mapping between a subscriber's private address to a public address and port range is determined algorithmically. Given a particular mapping rule, as specified by the service provider, a subscriber is repeatedly and deterministically mapped to the same public network address and a specific port range for that network address.…

Systems and methods for automatically correcting classification signatures

Granted: April 4, 2017
Patent Number: 9614773
A computer-implemented method for automatically correcting classification signatures may include (1) identifying at least one classification signature used to classify network traffic, (2) detecting at least one unknown flow of network traffic, (3) determining that the unknown flow of network traffic and the classification signature exceed a threshold level of similarity by comparing the unknown flow with the classification signature, and then in response to determining that the unknown…

Application-specific connectivity loss detection for multicast virtual private networks

Granted: April 4, 2017
Patent Number: 9614906
An egress network device of a point-to-point (P2P) tunnel can receive an LSP Ping message via the P2P tunnel from an ingress network device of the P2P LSP, wherein the LSP Ping message specifies a label that the egress network device associates with a service provided to the egress network device via the P2P tunnel. In response to receiving the LSP Ping message, the egress network device can store an association between the label and the P2P tunnel. The egress network device also uses a…

Creating searchable and global database of user visible process traces

Granted: March 28, 2017
Patent Number: 9606896
In one example, a controller device includes one or more network interfaces communicatively coupled to one or more devices of a virtual network, and a processor configured to determine, for the virtual network, a set of two or more related processes executed by respective devices in the virtual network, receive via the network interfaces data for the set of two or more related processes, and aggregate the data for the set of two or more related processes to form aggregated data for the…

Methods and apparatus to reduce forwarding state on an FCoE-to-FC gateway using port-specific MAC addresses

Granted: March 28, 2017
Patent Number: 9608939
In one embodiment, an apparatus includes an initialization module configured to receive a Fiber Channel over Ethernet Initialization Protocol (FIP) login request from a network device. The initialization module is configured to select an outbound port based at least in part on a load-balancing calculation. The initialization module is configured to define a destination Media Access Control (MAC) address. The initialization module is configured to associate the destination MAC address…

Using a public key infrastructure for automatic device configuration

Granted: March 21, 2017
Patent Number: 9600302
A device may receive a digital voucher, a customer certificate, and configuration information for automatically configuring the device. The digital voucher may include a first customer identifier that identifies a customer associated with the device and a device identifier that identifies the device. The customer certificate may include a second customer identifier that identifies the customer and a customer public key associated with the customer. The configuration information may…

Rendezvous point link resiliency for bidirectional protocol independent multicast (PIM-BIDIR)

Granted: March 21, 2017
Patent Number: 9602294
Techniques provide rendezvous point link (RPL) resiliency for bidirectional protocol independent multicast (PIM-BIDIR) in a computer network. According to the techniques, when two or more RPL partitions have a same RPL subnet, routers on the RPL subnet are configured to elect an active RPL partition that will function as a RPL. The routers on any inactive RPL partitions may then treat the inactive RPL partitions as regular links in the RPL subnet and build a route to the active RPL…

Applications-aware targeted LDP sessions

Granted: March 21, 2017
Patent Number: 9602354
In general, the disclosure relates to techniques for initiating a targeted LDP session in a manner that includes information specifying one or more application for which a targeted LDP session is being initiated. In one example, a method includes receiving, by a network device, a LDP initialization message to initiate an Label Distribution Protocol (LDP) session with a peer network device, the LDP initialization message including a Targeted Applications Capability (TAC) field specifying…

Network topology optimization

Granted: March 21, 2017
Patent Number: 9602387
In some examples, a controller for a multi-layer network comprising a network layer and an underlying transport layer is configured to obtain abstract link data describing a plurality of candidate links; determine, based at least on the abstract link data, a first solution comprising a network topology for the network layer that includes a first selected subset of the candidate links; determine, after generating a modified network topology based at least on the network topology and the…

Data center architecture utilizing optical switches

Granted: March 21, 2017
Patent Number: 9602434
Embodiments of the invention describe flexible (i.e., elastic) data center architectures capable of meeting exascale, while maintaining low latency and using reasonable sizes of electronic packet switches, through the use of optical circuit switches such as optical time, wavelength, waveband and space circuit switching technologies. This flexible architecture enables the reconfigurability of the interconnectivity of servers and storage devices within a data center to respond to the…

Usage monitoring control for mobile networks

Granted: March 21, 2017
Patent Number: 9602675
In general, techniques are described for facilitating usage monitoring control in mobile networks. A mobile gateway comprising one or more processors and a memory may be configured to perform the techniques. The one or more processors may be configured to transmit a usage monitoring report indicative of usage of a service provided via a session for which usage monitoring was previously activated. The memory may be configured to store a monitoring key that was configured as a result of…