Method and device for processing unicast message with unknown destination

A technology of unknown unicast and processing method, applied in the field of communication, can solve the problem of affecting the forwarding of unknown unicast messages of the destination, and achieve the effect of ensuring correct forwarding

Active Publication Date: 2016-12-28
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for abnormal situations such as network attacks, network device 2 will receive a large number of attack packets, and these attack packets are all unicast packets with unknown destinations, so that network device 2 will broadcast a large number of unicast packets with unknown destinations, thereby affecting Normal forwarding of unknown destination unicast packets

Method used

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  • Method and device for processing unicast message with unknown destination
  • Method and device for processing unicast message with unknown destination
  • Method and device for processing unicast message with unknown destination

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Embodiment Construction

[0033] In view of the problems existing in the prior art, the embodiment of the present invention provides a method for processing unicast packets with unknown purpose, and the method is applied to a network device including at least a forwarding chip and a CPU (Central Processing Unit, central processing unit) (such as: switches, routers, etc.), to figure 1 It is a schematic diagram of an application scenario of an embodiment of the present invention; wherein, network device 1 needs to send a unicast message to network device 3 through network device 2, so network device 2 will receive a destination unknown unicast message from network device 1 (its destination MAC The address is MAC3); in addition, the network device 2 will also receive an attack destination unknown unicast packet (the destination MAC address can be MAC4, MAC5, MAC6, etc.).

[0034] Based on the above application scenarios, such as figure 2 As shown, the method includes the following steps:

[0035] In st...

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Abstract

The invention discloses a method and equipment for processing unknown-purpose unicast messages. The method comprises: a CPU receives an unknown-purpose unicast message from a forwarding chip, and obtains the destination MAC address of the unknown-purpose unicast message; Whether the destination MAC address is recorded in the message forwarding control table; if not, the CPU records the destination MAC address in the unknown unicast packet forwarding control table, and updates the number of destination unknown unicast packets corresponding to the destination MAC address; if yes , the CPU updates the number of destination unknown unicast packets corresponding to the destination MAC address; after the CPU reaches the specified time, it judges whether the number of destination unknown unicast packets corresponding to each destination MAC address is greater than the preset threshold value, if greater, Then send the flow control policy corresponding to the destination MAC address to the forwarding chip. In the embodiment of the present invention, the correct forwarding of normal unknown-purpose unicast messages can be effectively guaranteed.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and equipment for processing unicast messages with unknown destinations. Background technique [0002] The destination unknown unicast message means that when the network device (that is, the forwarding device) forwards the unicast message, the destination MAC (Media Access Control, Media Access Control) address cannot be found in the forwarding table of the network device, so the unique outbound port cannot be determined. unicast packets. Further, since the outgoing port of the unknown destination unicast message cannot be uniquely determined, it is usually used in the VLAN (Virtual Local Area Network, Virtual Local Area Network) where the destination unknown unicast message is located, and the mode of excluding the source port for broadcasting is used to send the unknown destination unicast message. broadcast packets, so as to achieve the purpose of forwarding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L29/06H04L45/74
Inventor 梁学伟张孝安袁智
Owner XINHUASAN INFORMATION TECH CO LTD
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