Apparatus, system, and method for discovering network path maximum transmission units
US10419356B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2017 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Nov 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0681
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosed apparatus may include (1) forwarding, along a network path, a test packet that is (A) destined for an invalid port on a destination device and (B) fragmented by an intermediary device within the network path according to an MTU value of a network interface on the intermediary device, (2) receiving an error packet sent by the destination device in response to having determined that the test packet is destined for the invalid port, (3) determining a PMTU value of the network path by identifying, within the error packet, a size of the largest fragmented segment of the test packet received by the destination device, and then (4) forwarding, along the network path, at least one packet sized to comply with the PMTU value such that the packet remains unfragmented upon reaching the destination device. Various other apparatuses, systems, and methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.