Resource reservation protocol resource notification messages
Granted: May 6, 2025
Patent Number:
12294528
In some implementations, a non-ingress node of one or more label-switched paths (LSPs) may identify a resource issue event. The non-ingress node may identify, based on identifying the resource issue event, one or more notification-requester stacks included in a data structure. The non-ingress node may generate one or more resource notification messages that each include a respective notification-requester stack of the one or more notification-requester stacks. The non-ingress node may…
Remotely updating routing tables
Granted: May 6, 2025
Patent Number:
12294517
A network device may receive an instruction to update a data structure implemented by the network device and update the data structure based on receiving the instruction. The data structure may include a routing instruction to direct the network device to provide a data flow to a server device for processing. The network device may receive the data flow destined for a destination device; determine the routing instruction based on at least a portion of an internet protocol (IP) address…
Safely engineering egress traffic changes
Granted: May 6, 2025
Patent Number:
12294511
A network device can automatically select an execution plan from a set of possible execution plans that cause a first set of traffic assignments in a network to be changed to a second set of traffic assignments. A traffic assignment indicates assignments of the traffic to one or more tunnels, internal routes and/or peer links to be utilized for routing traffic received at provider edge routers through a network to prefixes. A traffic assignment can have various parameters such as…
Determining dependent causes of a computer system event
Granted: May 6, 2025
Patent Number:
12293307
Disclosed are methods and systems for determining combinations of system parameters that indicate a root cause of a system level experience deterioration (SLED). Some of the disclosed embodiments generate a decision tree from a first class of operational parameter datasets. Rules are derived from the decision tree. Filtered rule sets for feature parameters included in the system parameters are then determined. Pairs of features within a particular dataset that each satisfy their…
Logical fabric overlays
Granted: April 29, 2025
Patent Number:
12289234
Techniques are disclosed for overlaying logical switch fabrics upon a physical switch fabric comprising multiple physical switch devices. In one example, a network device determines an overlay network associated with a received packet. The network device determines a logical identifier that is associated with the overlay network. In some examples, the logical identifier corresponds to a color. The network device selects a logical switch fabric that is associated with the logical…
Network traffic monitoring based on content data
Granted: April 29, 2025
Patent Number:
12289349
A network monitoring device may receive, from a mediation device, flow-tap content data (generated by the mediation device based on current and/or previous investigation reports associated with flow tapping) that needs to be monitored. The network monitoring device may map the content data to a flow-tap content destination address of a content destination device in an entry of a flow-tap content filter. The network monitoring device may analyze, using the flow-tap content filter, network…
Adjusting a security policy based on system resource utilization
Granted: April 29, 2025
Patent Number:
12289347
In some implementations, a security device may identify a resource profile based on a value of a resource utilization metric associated with the security device. The security device may identify a security services profile to be applied to traffic that is to be processed by the security device. The security device may determine a set of security services to be performed by the security device, the set of security services being identified based on the resource profile and the security…
Virtual router deployment and configuration
Granted: April 29, 2025
Patent Number:
12289249
In general, techniques are described for deploying and managing a virtual router having Data Plane Development Kit (DPDK) functionality to a computing device. In an example, a method includes creating, by a container orchestration platform executing on a computing device, a virtual router custom resource instance of a virtual router custom resource definition, the virtual router custom resource instance for a virtual router to execute on the computing device; based on configuration data…
Network policy application based on session state
Granted: April 29, 2025
Patent Number:
12289243
Techniques are disclosed for the detection of different states of a session comprising a bidirectional flow of network traffic between client devices so as to enable a network device to apply different network policies to different states of the session. In one example, a computing device identifies multiple states of a session and defines a plurality of network policies. Each network policy defines performance requirements for network traffic during each state of the session. A network…
Distributing service function chain data and service function instance data in a network
Granted: April 29, 2025
Patent Number:
12289235
In some examples, a computing device comprises a first service function instance to apply a service function and a service function forwarder to: receive a first layer 3 routing protocol route advertisement that includes service function instance data for a second service function instance, the service function instance data indicating a service function type and a service identifier for the service function instance; receive a second layer 3 routing protocol route advertisement that…
Multi-pitch ball grid array
Granted: April 29, 2025
Patent Number:
12288741
A mixed pitch method of placing pads in a ball grid array (BGA) package having a BGA substrate and a plurality of connectors arranged in an array and connected via the pads to the BGA substrate. Selected pairs of the pads are placed on the BGA substrate at a distance defined by a first pitch P1. Ground pads are placed on the BGA substrate at a distance from the selected pairs of pads defined by a second pitch P2, wherein P2=M*P1 and M is greater than one. The selected pairs of the pads…
Virtualized cell site routers with layer 2 forwarding
Granted: April 29, 2025
Patent Number:
12289233
In general, techniques are described for deploying virtualized cell site routers (vCSRs). In an example, a method comprises receiving, at a forwarding plane of a virtualized cell site router (vCSR) of a first Distributed Unit (DU) of a plurality of DU servers of a cell site for a 5G radio access network, the vCSR having a containerized routing protocol process and a forwarding plane configured to perform Layer 2 (L2) switching, L2 packets on a second interface for a second physical link…
Weighted multicast join load balance
Granted: April 29, 2025
Patent Number:
12289231
In some examples, a method includes receiving, by an egress network device for a network, messages from each of a plurality of ingress network devices for the network, wherein each of the messages specifies a multicast source, a multicast group, and an upstream multicast hop weight value for multicast traffic for the multicast source and the multicast group; selecting, by the egress network device and based on the upstream multicast hop weight values specified by the received messages,…
Segment identifiers that support end-to-end segment routing with color extended community and border gateway protocol virtual private network option B
Granted: April 29, 2025
Patent Number:
12289229
A first network device may receive an advertisement that includes a prefix for a second network device, wherein the advertisement is destined for a third network device. The first network device may determine, based on a network topology, whether a next hop is one hop away or multiple hops away. The first network device may selectively modify the advertisement to include a first segment identifier, based on the next hop being one hop away and to generate a first modified advertisement,…
Anomaly detection for network devices using intent-based analytics
Granted: April 29, 2025
Patent Number:
12289226
A controller device includes one or more processors and a memory for storing instructions that, when executed, cause the one or more processors to receive, from a set of network devices in a network, a time series of telemetry data; determine, using telemetry data, a threshold for a parameter of a network device of the set of network devices; in response to reception of an indication that an instant value for the parameter does not satisfy the determined threshold for the parameter,…
Multiple state control interfaces between a control plane and a user plane in a disaggregated broadband network gateway architecture
Granted: April 29, 2025
Patent Number:
12289224
A disaggregated broadband network gateway (DBNG) control plane system may receive an association setup request message from a DBNG user plane device, wherein the association setup request message is received via a state control interface between the DBNG control plane system and the DBNG user plane device. The DBNG control plane system may determine, based on the association setup request message, one or more capabilities of the DBNG user plane device and may thereby cause one or more…
Logical path down scope analysis
Granted: April 29, 2025
Patent Number:
12289220
A network management system (NMS) generates a hierarchical attribution graph representing different scopes at different hierarchical levels of a wide area network (WAN); obtains logical path down data indicative of operational behavior including failure events associated with logical paths of network devices over the WAN; obtains total path data indicative of a historical number of active logical paths between the network devices; and determines a scope of a logical path down issue by,…
Controlling downlink interface configuration based on uplink interface network and protocol state
Granted: April 29, 2025
Patent Number:
12289203
A customer edge device is connected, in a multi-homed configuration, to a device via a downlink of the device and to another device via another downlink of the other device. The device may determine that each of one or more uplinks of the device has an inactive interface status and may thereby cause the downlink of the device to be down. This may cause the customer edge device to communicate network traffic via the other downlink of the other device. The device may determine that at…
Network performance monitoring and fault management based on wide area network link health assessments
Granted: April 29, 2025
Patent Number:
12289198
Techniques are described for monitoring network performance and managing network faults in a computer network. A cloud-based network management system stores path data received from a plurality of network devices operating as network gateways for an enterprise network, the path data collected by each network device of the plurality of network devices for one or more logical paths of a physical interface from the network device over a wide area network (WAN). The network management system…
Proactive tunnel configuration computation for on-demand SD-WAN tunnels
Granted: April 29, 2025
Patent Number:
12289182
This disclosure describes techniques are described for proactively computing configuration information for policy-driven on-demand tunnel creation and deletion between sites in a software-defined networking in wide area network (SD-WAN) environment. In some examples, a controller device is configured to precompute configuration data for an overlay tunnel through the wide area network to connect a first site and a second site of a plurality of sites in the SD-WAN environment. The…
