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Method of multilayer VLAN switching

A virtual local area network and switching domain technology, applied in the field of network communication, can solve the problems of complex equipment and low VLAN efficiency, and achieve the effect of improving connection efficiency and facilitating VPN networking.

Active Publication Date: 2006-01-25
NEW H3C TECH CO LTD
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Problems solved by technology

[0012] The purpose of the present invention is to provide a method for multi-layer virtual local area network exchange, to overcome the shortcomings of low efficiency and complex equipment in the prior art when realizing VLAN intercommunication through 3 layers, and flexibly realize automatic switching between multi-point and multi-layer virtual local area networks. exchange

Method used

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  • Method of multilayer VLAN switching
  • Method of multilayer VLAN switching
  • Method of multilayer VLAN switching

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Embodiment Construction

[0052] The core of the present invention is to set up the VLAN switching path table, including the VLAN information that participates in the exchange under all switching domains in the table: switching domain identification, MAC address, VLAN label, and may also include port number, thereby setting up the switching domain identification and Correspondence between multi-layer VLAN tags and ports; when an input data packet is received, the VLAN switching path table is queried according to the multi-layer VLAN tag of the data packet to obtain the corresponding switching domain identifier; according to the switching domain identifier and the input data packet The destination MAC address selects the export path and the corresponding VLAN label of the input data packet; strips off the multi-layer VLAN label of the input data packet, encapsulates it by the selected VLAN label, and forwards the encapsulated input data packet through the export path, thereby Realize Layer 2 interconnect...

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Abstract

A method for switching virtual local network with multi-layer includes setting up virtual local network VLAN switching path table having VLAN data participated switch under all switch domains, obtaining the corresponding switch domain identification as per VLAN switching path table, selecting outlet path of input data packet according to said identification and destination MAC address of input data packet and using said outlet path to retransmit the input data packet.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a multi-layer virtual local area network switching method. Background technique [0002] VLAN (Virtual Local Area Network) refers to an end-to-end logical network built on the basis of a switched LAN and using network management software that can span different network segments and networks. A VLAN forms a logical subnet, that is, a logical broadcast domain, which can cover multiple network devices and allow network users in different geographical locations to join a logical subnet. The division of VLANs can be based on different principles, mainly in the following three types: [0003] 1. Port-based VLAN division, which divides several ports on one or more switches into a logical group. [0004] 2. VLAN division based on MAC address. The MAC address refers to the identifier of the network card. The MAC address of each network card is unique and fixed on the netw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/46
Inventor 卢胜文
Owner NEW H3C TECH CO LTD
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