The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 17, 2019

Filed:

Jul. 22, 2017
Applicant:

Juniper Networks, Inc., Sunnyvale, CA (US);

Inventors:

Prashant Singh, Santa Clara, CA (US);

Sairam Neelam, Hyderabad, IN;

Assignee:

Juniper Networks, Inc, Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/805 (2013.01); H04L 12/26 (2006.01); H04L 12/825 (2013.01); H04L 12/24 (2006.01);
U.S. Cl.
CPC ...
H04L 47/365 (2013.01); H04L 43/10 (2013.01); H04L 47/26 (2013.01); H04L 41/0681 (2013.01);
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.


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