公开(公告)号：US12166675B2

公开(公告)日：2024-12-10

申请号：US17892691

申请日：2022-08-22

Applicant: Cisco Technology, Inc.

Inventor： Arul Murugan Manickam ,  Laxmikantha Reddy Ponnuru ,  Avinash Shah ,  Vishali Somaskanthan

IPC: H04L45/745 ,  H04L47/2483 ,  H04L47/43

Abstract: An efficient method to handle fragmented packets in multi-node all-active clusters. In one particular embodiment, a method includes receiving an initial fragment packet at a node in a cluster, creating a secondary flow table, linking the secondary flow table to a primary flow table, determining the primary flow owner of the initial fragment packet, and transmitting initial and succeeding fragment packets out of the cluster through, if possible, the primary flow owner.

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.