Generating flexible, programmable, and scalable network tunnels on demand
Granted: February 8, 2022
Patent Number:
11245551
A device receives network information associated with a network and server information associated with one or more server devices, wherein the network is associated with a network device and the one or more server devices. The device generates, based on the network information and the server information, an encapsulation profile for a tunnel encapsulation path and a route profile for the tunnel encapsulation path. The device provides, to the network device, the encapsulation profile for…
Supporting optical line terminals of a passive optical network
Granted: February 8, 2022
Patent Number:
11245971
A first network device may configure a first bridge connecting a passive optical network (PON) controller and first optical line terminals (OLTs) of the first network device. The first network device may be associated with a PON and each of the first OLTs may be connected to a first plurality of optical network units (ONUs). The first network device may establish a connection between the first bridge and a second bridge of a second network device. The second network device is associated…
Load balancing in a high-availability cluster
Granted: February 8, 2022
Patent Number:
11245752
A first network device may configure a high-availability cluster associated with a network that includes the first network device and a second network device. The first network device may identify a plurality of devices communicatively coupled to the network and determine a set of tasks for the plurality of devices. The first network device may queue the set of tasks in a task queue that is accessible to the second network device. The second network device may perform a first task and…
Apparatus, system, and method for flow-level switchover of video streams
Granted: February 8, 2022
Patent Number:
11245742
A disclosed method may include (1) measuring a quality level of a first instance of a video flow received via a first link within a network, (2) measuring a quality level of a second instance of the video flow received via a second link within the network, (3) determining that the quality level of the second instance of the video flow is better than the quality level of the first instance of the video flow, and then in response to determining that the quality level of the second instance…
Application-based network security
Granted: February 8, 2022
Patent Number:
11245697
A network device may receive, from an application on a user device, a first network packet associated with a packet flow. The network device may identify an application identifier of the first network packet, wherein the application identifier identifies the application on the user device. The network device may select, based on the application identifier, a security protocol, wherein the security protocol is associated with at least one of an authentication header (AH) or an encryption…
Critical firewall functionality management
Granted: February 8, 2022
Patent Number:
11245668
A network device may detect, from an application associated with a user space of the network device, a request to configure a firewall provided by a kernel of the network device with a rule. The network device may intercept the request to configure the firewall before the firewall is configured with the rule. The network device, based on intercepting the request to configure the firewall, may analyze the rule to determine whether the rule modifies a critical functionality of the…
Methods and apparatus for efficient use of link aggregation groups
Granted: February 8, 2022
Patent Number:
11245637
A non-transitory processor-readable medium storing code representing instructions to be executed by a processor can cause the processor to receive an indication to load balance a group of sessions associated with a network node and a switch across a group of links between a gateway device and the switch at a first time. The code causes the processor to calculate at a second time, a load based on the group of sessions and associated with a first set of links in an active configuration…
Compressed routing header
Granted: February 8, 2022
Patent Number:
11245617
A node receives an internet protocol (IP) payload packet that includes an IPv6 transport header that has been extended with a compressed routing header (CRH). The CRH includes a list of segment identifiers (SIDs) that identify nodes that the IP payload packet is to traverse. The node determines, by referencing the list of SIDs, a next segment for the IP payload packet. The node updates a destination IP address that is included in the IPv6 transport header to a particular destination IP…
Tunnel processing distribution based on traffic type and learned traffic processing metrics
Granted: February 8, 2022
Patent Number:
11245608
In some implementations, a network device may determine throughput rate metrics for a plurality of processing units of the network device that are processing network traffic of a network. The network device may maintain the throughput rate metrics in a status table associated with the plurality of processing units. The network device may receive tunnel traffic associated with a particular tunnel of the network. The network device may determine, based on a characteristic of the tunnel…
Network traffic monitoring or storage using a signed uniform resource locator
Granted: February 8, 2022
Patent Number:
11245599
A network monitoring device may receive flow-tap information that identifies a traffic flow characteristic and a signed URL associated with a signed URL platform from a mediation device. The network device may map the traffic flow characteristic to the signed URL in an entry of a flow-tap filter that is maintained within a data structure of the network device. The network device may analyze, using the flow-tap filter, network traffic of the network to detect a traffic flow that is…
Optical-electrical device using hybrid automated testing equipment
Granted: February 8, 2022
Patent Number:
11243550
An optical-electrical device can implement a feedback-based control loop for temperature of the device during component calibration. The optical-electrical device can implement compressed air to vary the device temperature during calibration. Additionally, non-active components of the device can be provided current to vary the temperature of the device in concert with the provided compressed air. Additional calibration temperatures can be implemented by activating and deactivating…
Photonic integrated circuit with active alignment
Granted: February 8, 2022
Patent Number:
11243362
An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures…
Methods and apparatus for consistency check for disaggregated dense wavelength-division multiplexing (DWDM) systems
Granted: February 1, 2022
Patent Number:
11240573
An apparatus includes a first communication interface configured to be communicatively coupled, via an optical line, to a network device that is disposed in an optical network using wavelength division multiplexing (WDM). The apparatus also includes a second communication interface configured to be communicatively coupled to a router via an Ethernet connection. The apparatus also includes a signal generator operatively coupled to the first communication interface and the second…
Combined input and output queue for packet forwarding in network devices
Granted: February 1, 2022
Patent Number:
11240151
An apparatus for switching network traffic includes an ingress packet forwarding engine and an egress packet forwarding engine. The ingress packet forwarding engine is configured to determine, in response to receiving a network packet, an egress packet forwarding engine for outputting the network packet and enqueue the network packet in a virtual output queue. The egress packet forwarding engine is configured to output, in response to a first scheduling event and to the ingress packet…
Assisted replication in software defined network
Granted: February 1, 2022
Patent Number:
11240144
A software defined networking (SDN) controller is configured to receive, from a Top-Of-Rack (TOR) switch, a first multicast route and a second multicast route. In response to determining that the first multicast route is an assisted replication route, the SDN controller is configured to add a first nexthop specified by the first multicast route to a list of nexthops for Broadcast, Unknown-Unicast, and Multicast (BUM) traffic. In response to determining that the second multicast route is…
Class-based traffic engineering in an IP network
Granted: February 1, 2022
Patent Number:
11240142
Techniques are described for class-based traffic engineering in an IP network. For example, routers of an IP network may establish one or more constrained traffic engineered paths using a link-state protocol (e.g., IGP) without using signaling protocols, such as RSVP or SPRING, or encapsulating packets over MPLS. For example, an egress router of the IP network may receive a capability message specifying the capability of routers to compute a constrained path to the egress router, wherein…
Policy controller for distributed virtualization infrastructure element monitoring
Granted: February 1, 2022
Patent Number:
11240128
This disclosure describes techniques for monitoring, scheduling, and performance management for virtualization infrastructures within networks. In one example, a computing system includes a plurality of different cloud-based compute clusters (e.g., different cloud projects), each comprising a set of compute nodes. Policy agents execute on the compute nodes to monitor performance and usage metrics relating to resources of the compute nodes. Policy controllers within each cluster deploy…
Atomic layer deposition bonding for heterogeneous integration of photonics and electronics
Granted: February 1, 2022
Patent Number:
11237325
Methods and systems are presented for heterogeneous integration of photonics and electronics with atomic layer deposition (ALD) bonding. One method includes operations for forming a compound semiconductor and for depositing (e.g., via atomic layer deposition) a continuous film of a protection material (e.g., Al2O3) on a first surface of the compound semiconductor. Further, the method includes an operation for forming a silicon on insulator (SOI) wafer, with the SOI wafer comprising one…
Dynamic prediction and management of application service level agreements
Granted: January 25, 2022
Patent Number:
11233715
In general, the disclosure describes techniques for adaptively determining one or more parameters of a service level agreement of an application. For instance, a network device may monitor round-trip times of a plurality of packets of a data flow of an application being transmitted over a link between an application server and a client device. The network device may determine an amount of retransmission of packets occurring during transmission of the plurality of packets of the data…
Replication mode selection for EVPN multicast
Granted: January 25, 2022
Patent Number:
11233741
The techniques describe example network systems for adaptively determining whether to perform ingress replication or assisted replication of a multicast flow based on classification of the multicast flow. For example, a provider edge (PE) device of a plurality of PE devices participating in an EVPN comprises one or more processors operably coupled to a memory, wherein the one or more processors are configured to: receive a multicast traffic flow, determine a classification of the…
