Cisco Patent - Path Visibility, Packet Drop, and Latency Measurement

ChangeBridge: Patent Grants - Networking (H04L)

Published March 31st, 2026

Detected April 1st, 2026

Summary

The USPTO granted Cisco Technology, Inc. Patent US12592987B2 covering techniques for measuring packet path visibility, packet drops, and latency in networked computing environments using service chaining data flows. The patent includes 20 claims and was assigned to inventors Sonu Kumar Khandelwal, Hasmit S. Grover, and Sundeep Singam Setty.

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What changed

The USPTO issued Patent No. US12592987B2 to Cisco Technology, Inc. on March 31, 2026, granting exclusive rights to methods for determining packet path visibility, packet drops, and latency measurements associated with data flows in networked computing environments. The patent covers techniques including receiving flow data, determining packet paths through service chain devices, and calculating latency based on timestamp data from leaf switches sending and receiving packets through service chains.

This patent grant gives Cisco enforceable intellectual property rights that other technology companies, network equipment manufacturers, or cloud service providers may need to consider for licensing purposes or design-around efforts. No compliance deadlines or regulatory actions are required by this notice. Companies developing similar networking measurement technologies should review the claims to assess potential IP implications.

Source document (simplified)

← USPTO Patent Grants

Path visibility, packet drop, and latency measurement with service chaining data flows

Grant US12592987B2 Kind: B2 Mar 31, 2026

Assignee

Cisco Technology, Inc.

Inventors

Sonu Kumar Khandelwal, Hasmit S. Grover, Sundeep Singam Setty

Abstract

Techniques for determining packet path visibility, packet drops, and latency measurements associated with data flows of a networked computing environment are disclosed herein. The techniques may include receiving flow data associated with a data flow of a networked computing environment and determining a packet path associated with the data flow. The packet path may indicate that a first leaf switch is configured to send packets to a service chain device and that a second leaf switch is configured to receive the packets from the service chain device. The techniques may also include receiving timestamp data indicating a first time when the first leaf switch sent a packet to the service chain device and a second time when the second leaf switch received the packet from the service chain device. Based at least in part on the timestamp data, a latency associated with the service chain device may be calculated.