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Dynamic VLAN ID assignment and packet transfer apparatus

一种数据包、发送源的技术，应用在通过路径配置进行数据交换、数字传输系统、数据交换网络等方向，能够解决操作成本大、难适用、VLANID设定错误等问题，达到低成本、降低网络负担的效果

Inactive Publication Date: 2006-12-13
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These setting operations are implemented each time a user terminal is added, and the burden on the network and the maintenance cost increase
In addition, for the allocation of VLAN IDs to user terminals, it is necessary to manage the relationship between user terminals and VLAN IDs. However, since the setting operation of these information for each user terminal cannot be automatically performed, it is necessary to implement the configuration for a large number of user terminals. In the case of constant operation, it is considered that setting errors such as duplication of VLAN IDs will occur, and the operation cost including these confirmations will increase. In addition, there is a problem that the network load will increase due to communication failures and incorrect connections.
[0009] In addition, in the above-mentioned known example, it is realized only by a switching hub, so it is difficult to apply to a large-scale system such as an inter-point VLAN.

Method used

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  • Dynamic VLAN ID assignment and packet transfer apparatus
  • Dynamic VLAN ID assignment and packet transfer apparatus
  • Dynamic VLAN ID assignment and packet transfer apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0030] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in the following embodiments, a case where a default VLAN-ID is set is described, but the same process is performed on an untagged VLAN frame including a connection request by PPPoE as will be described later.

[0031] 1. System structure

[0032] figure 1 It is a figure which shows the network structure of 1st Embodiment. figure 1 It has user terminal devices 100-1~100-n, 101-1~101-n, L2SW 102-1~102-x of centralized terminal devices, L2GW 103-1~103-y of centralized L2SW, and an upper layer network connected to L2GW 104 and the VLAN-ID management server 105 connected to the above-mentioned network. Communication from the terminal devices 100-1 to 100-n and 101-1 to 101-n to the upper layer network is performed using the tagged VLAN frame 106, and data such as an IP packet is transmitted in the tagged VLAN frame.

[0033] FIG. 2-1 is a configurat...

no. 2 approach

[0097] In the first embodiment, the case where the VLAN-ID management table exists on the VLAN-ID management server is described, but in the second embodiment, the case where the VLAN-ID management table exists in the L2GW device is described.

[0098] Figure 10 It is a figure which shows the network structure of 2nd Embodiment. Figure 10 It has user terminal devices 100-1 to 100-n, 101-1 to 101-n, L2SW 102-1 to 102-x of centralized terminal devices, L2GW 1003-1 to 1003-y of centralized L2SW, and The upper layer network 104 and the control network 1005 are connected between the L2GW devices. Communications from the terminal devices 100-1 to 100-n, 101-1 to 101-n to the upper network are performed using the tagged VLAN frame 106, and data such as IP packets are transmitted in the tagged VLAN frame. In addition, each of the L2GW devices 1003-1 to 1003-y has a VLAN-ID management table, and these can synchronize the contents of the VLAN-ID management table at any timing via th...

no. 3 approach

[0109] In addition, in the first and second embodiments of the present invention, the default VLAN is not used, and the PPPoE connection request based on the untagged frame is applicable when the network recognizes the transmission of the untagged VLAN frame. At this time, the above connection sequence is based on a PPPoE connection request without a label, and the L2GW device judges whether the connection is possible based on the terminal MAC address, service name, and other user information, and sends the VLAN ID to the user terminal instead of the session ID. Terminals can communicate through tagged VLAN frames based on the assigned VLAN ID.

[0110] At this time, in a VLAN network system having a plurality of L2SW devices accommodating a plurality of user terminals, a plurality of L2GW devices accommodating the L2SW devices, and an upper layer network to which the above-mentioned L2GW devices are connected, for example, as follows, to perform deal with.

[0111] (1) Accor...

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PUM

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Abstract

Any or unique VLAN ID is dynamically assigned to a user terminal connected to a network, and communication by the assigned VLAN ID is enabled. A connection request from a user terminal is directed to L2GWs by a tagged VLAN frame having a common VLAN ID on the network. The L2GWs determine whether the connection request can be met, obtain a VLAN ID that can be assigned to the user terminal from a VLAN ID management server, configure themselves to communicate by the assigned VLAN ID, and report the VLAN ID to the user terminal. The user terminal performs subsequent communication by the reported VLAN ID. L2SWs monitor communication between the user terminal and the L2GWs and configure themselves to allow communication between the user terminal and the L2GWs by the VLAN ID assigned to the user terminal.

Description

technical field [0001] The present invention relates to a user terminal, L2SW device, and L2GW device capable of dynamically setting a VLAN ID in a network system connectable to an Ethernet (registered trademark) network. Background technique [0002] In recent years, in corporate LANs, arbitrary terminals are virtually grouped regardless of the physical structure of the network, and a VLAN (VIRTUAL LAN: virtual local area network) regarded as one LAN is constructed. It is a technology that enables network construction without depending on changes in the network structure accompanying changes in terminal installation locations and organization changes, reduces network management costs, and reduces network load due to restrictions on broadcast packets. [0003] One of VLAN construction methods is a tagged VLAN method in which a VLAN is identified by adding a VLAN TAG to a frame header of Ethernet (registered trademark). In this method, multiple VLAN connections can be set be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/12H04L12/46H04L12/70
CPCH04L12/4645H04L12/467
Inventor 永井稔宫田裕章太田琢
Owner HITACHI LTD