公开(公告)号：GB2525134B

公开(公告)日：2017-02-22

申请号：GB201515001

申请日：2014-03-06

Applicant: IBM

Inventor： KESHAV G KAMBLE ,  VIJOY A PANDEY

IPC: H04L45/50 ,  H04L47/31 ,  H04L47/265

Abstract: Embodiments of the invention provide a method for quantized congestion notification in a virtual networking system comprising multiple virtual networks (VNs). Each VN comprises at least one virtual machine (VM) configured to generate one or more packet flows. Each packet of each packet flow is tagged with a congestion notification (CN) tag. Each packet flow is mapped to a corresponding virtual tunnel end point (TEP) that distributes each packet of the packet flow. A congestion notification message (CNM) is generated for each congestion point (CP) associated with each packet flow. Each CP is mapped to a corresponding TEP that distributes each CNM for the CP, wherein the corresponding VTEP forwards the CNM to a VM contributing to packet congestion at the CP.