In-band telemetry method of virtual sdn network in-band telemetry system based on segment routing

Abstract

The invention relates to the technical field of communications, and discloses an in-band telemetry method of a virtual SDN network in-band telemetry system based on segment routing, which can collect specific state information of two network data planes, and judge and analyze the two types according to the collected information. Whether there is an exception in the network, and the type of exception. At the same time, in order to reduce the consumption of flow table resources on the physical switch, we use segment routing as the routing method for virtual network traffic in the physical network. The monitoring mechanism that can meet the real-time and high-efficiency requirements of virtual SDN network monitoring can solve the problem of low monitoring accuracy caused by traffic cross-layer aliasing, and can analyze and locate the specific location and cause of network faults.

Description

technical field [0001] The invention relates to the field of communication technologies, in particular to an in-band telemetry method of a virtual SDN network in-band telemetry system based on segment routing. Background technique [0002] Network virtualization is an important technology in the data center. Based on network infrastructure equipment, network virtualization creates different virtual networks for tenants, and isolates traffic between different virtual networks so that they do not affect each other. In order to realize network virtualization, an overlay network (Overlay Network) based on the TCP / IP protocol stack is usually used. The overlay network only allows the data center administrator to allocate physical network resources (switches, ports, links). The desired link topology. In cloud networks, the diversity of network services prompts the need for greater flexibility in virtual networks, which leads to strong demands from tenants for the programmabilit...

AI Technical Summary

Problems solved by technology

[0006] Since the virtual SDN network needs to run in the physical network, whether it is the configuration of the virtual network, the configuration of the physical network, or the failure of the physical hardware, it will cause problems in the tenant's business, and it is difficult to locate the cause and root cause of the problem

At the same time, on the physical network, virtual network traffic and physical network traffic exist at the same time. It is difficult to distinguish the types and specific states of various network traffic based on polling monitoring methods, which affects the accuracy of measurement.

In summary, the traditional virtual SDN network monitoring solution cannot meet the real-time, adaptive and efficient requirements of virtual SDN network monitoring, and the monitoring accuracy is low

Images