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Method and device for realizing service chain

A service chain and MAC address technology, applied in the computer field, can solve problems such as too large maximum transmission unit, unsolvable processing problems, and insufficient performance, and achieve the effects of easy management, flexible deployment, flexible performance, and security support

Inactive Publication Date: 2018-03-16
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these solutions have several disadvantages, including: the data packet received by the middle box is not the original data packet, so special middle box hardware or software is required; the processing problem of the middle box that does not support the MAC address cannot be solved; Possible re-entry problems when there are multiple middleboxes; use of proprietary protocols; insufficient performance; excessive maximum transmission unit (MTU), etc.

Method used

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  • Method and device for realizing service chain
  • Method and device for realizing service chain
  • Method and device for realizing service chain

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Embodiment Construction

[0023] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] The present invention is based on the following requirements or assumptions:

[0025] 1. Middleboxes are treated as second-tier devices, which behave as black holes (i.e., never respond to any request / listen / scan), which include firewalls, intrusion prevention / detection systems, data leakage prevention systems, etc.;

[0026] 2. The middlebox is "placed inline" for a particular communication flow: the relevant communication flow pass...

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Abstract

A method for implementing a service chain, a corresponding device, and an SDN controller are disclosed, the method comprising: a step of modifying, in response to receiving a packet belonging to a service chain and sending the packet to the next hop in the service chain a switch, modifying the original destination MAC address of the packet to the designated MAC address of the middle box of the next hop in the service chain, and modifying the original source MAC address of the packet to encoded data encoding the state information of the packet; and Restoring the step of restoring the packet's modified destination MAC address to the packet's original destination MAC address, and restoring the packet's modified source The MAC address reverts to the original source MAC address of the packet.

Description

technical field [0001] The present invention relates to the field of computers, in particular to service chaining (service chaining) based on SDN (Software Defined Networking, software-defined network), and more specifically to a method and device for implementing service chaining. Background technique [0002] In recent years, with the increasing popularity of cloud computing, cloud security, especially network security, has become a very prominent issue. Increasing efforts are being made to leverage emerging technologies to provide dynamic and flexible security features in cloud networks. A typical example is to dynamically provide virtual network security services using SDN-based service chaining. [0003] SDN is an emerging computer networking technology that separates the system that makes decisions about where to send traffic (called the control plane) from the underlying system that forwards traffic to selected targets (called the data plane). couple. The control p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/947H04L12/931H04L45/74
CPCH04L12/6418H04L67/63H04L45/745H04L69/22H04L45/566H04L45/127
Inventor 杨保华郑凯张跃刘天成
Owner IBM CORP
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