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System and method for internet protocol version 6 (IPv6) message switching based on dynamic host configuration protocol for IPv6 (DHCPv6) interception

A message exchange and message technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as message forwarding spoofing attacks, and achieve the effect of increasing learning methods and ensuring stability and security.

Inactive Publication Date: 2012-07-04
北京神州数码云科信息技术有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

However, at present, in order to reduce the load on the switching CPU at the aggregation layer, DHCPv6 snooping is not enabled on the Layer 3 switching device, and DHCPv6 snooping is implemented on the Layer 2 switching device at the access layer. If the ND protocol is relied on to generate a Layer 3 host routing table item, vulnerable to spoofing attacks during message forwarding

Method used

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  • System and method for internet protocol version 6 (IPv6) message switching based on dynamic host configuration protocol for IPv6 (DHCPv6) interception
  • System and method for internet protocol version 6 (IPv6) message switching based on dynamic host configuration protocol for IPv6 (DHCPv6) interception
  • System and method for internet protocol version 6 (IPv6) message switching based on dynamic host configuration protocol for IPv6 (DHCPv6) interception

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Embodiment Construction

[0038] In order to describe in detail the technical content, achieved objects and effects of the present invention, detailed descriptions are given below with reference to the embodiments and the accompanying drawings.

[0039] figure 1 This is a system block diagram of a switching system based on an embodiment of the present invention. The IPv6 message switching system includes a DHCPv6 client, an access switch configured as a Layer 2 switching device, an aggregation switch configured as a Layer 3 switching device, and a DHCPv6 server. The DHCPv6 client is connected to the access switch, the access switch is connected to the aggregation switch, and the aggregation switch is connected to the DHCPv6 server through the network. The DHCPv6 client forwards request packets through the access switch and the aggregation switch to request an IPv6 address from the DHCPv6 server. The DHCPv6 server is used to assign IPv6 addresses according to the requests of DHCPv6 clients. The access...

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Abstract

The invention discloses a system and a method for internet protocol version 6 (IPv6) message switching based on dynamic host configuration protocol for IPv6 (DHCPv6) interception. The system comprises a DHCPv6 client, an access switch, an aggregation switch and a DHCPv6 server, wherein the access switch is a two-layer switching device, and the aggregation switch is a three-layer switching device. The access switch is used for building port binding information containing internet protocol (IP) addresses, media access control (MAC) addresses and virtual local area internet identifiers by intercepting IPv6 address request processes, and the port binding information is transmitted to the aggregation switch through binding messages. The aggregation switch is used for updating a host route table according to the binding information carried by the binding messages and a binding message receiving port, and transmits IPv6 messages across virtual local area internets according to the host route table.

Description

technical field [0001] The invention relates to the field of computer data communication, in particular to an IPv6 message exchange system and method based on DHCPv6 snooping (DHCPv6 Snooping). Background technique [0002] With the continuous improvement of switching technology in data communication, devices with Layer 3 switching functions have been widely used. IPv6 Layer 3 switching devices can forward IPv6 packets across virtual local area networks at wire-speed, which is an advantage that Layer 2 switching devices do not have. [0003] The prior art discloses a "three-layer switching method, device, system and host", the method includes: receiving a network packet sent by a source virtual machine; Perform three-layer switching processing to generate the network packet processed by the three-layer switching, the virtual link where the destination virtual machine is located, and the three-layer destination address of the destination virtual machine; The network packets ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/12H04L12/46H04L45/74
Inventor 梁小冰
Owner 北京神州数码云科信息技术有限公司
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