公开(公告)号：US20240348554A1

公开(公告)日：2024-10-17

申请号：US18133975

申请日：2023-04-12

Applicant: Cisco Technology, Inc.

Inventor： Balaji Sundararajan ,  Ganesh Devendrachar ,  Avinash Shah ,  Preety Mordani ,  Satyajit Das ,  Michael John Moskal

IPC: H04L47/43 ,  H04L47/36

CPC classification number: H04L47/43 ,  H04L47/36

Abstract: Techniques are described for avoiding data packet fragmentation in a routing device such as a router or network switch. Path Maximum Transport Unit (PMTU) values are monitored for a plurality of egress links of a networking device. A statistical analysis of fragmentation rates is performed. The statistical analysis can be performed on a per-link basis, per-flow basis or both per-link and per-flow basis. If the packet fragmentation rate of data flows through a particular egress link exceeds a determined threshold value, one or more data flows can be re-routed to a different egress link having a higher PMTU, thereby preventing data packet fragmentation.