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VLAN polymerizing method, converging exchanger and system based on ARP detector intercept

A technology of aggregation switches and aggregation methods, applied in the field of data exchange networks, can solve the problems of few router devices and the burden of upper-layer IP gateway devices, etc., and achieve the effects of reducing maintenance costs, saving VLANs, and reducing complexity

Active Publication Date: 2007-04-11
NEW H3C TECH CO LTD
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Problems solved by technology

[0019] The disadvantage of using QinQ technology to solve the problem of VLAN convergence is that the IP gateway devices above the aggregation layer need to terminate the QinQ packets carrying two layers of VLAN tags. At present, there are few router devices in the industry that support this function.
Therefore, using this method to do VLAN aggregation adds an extra burden to the upper-layer IP gateway device

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  • VLAN polymerizing method, converging exchanger and system based on ARP detector intercept
  • VLAN polymerizing method, converging exchanger and system based on ARP detector intercept
  • VLAN polymerizing method, converging exchanger and system based on ARP detector intercept

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Embodiment Construction

[0052] As shown in Fig. 2, the VLAN aggregation of the two-layer network is realized through the ARP interception processing and the ARP forwarding processing of the aggregation switch of the present invention, and the ARP interception processing and the ARP forwarding processing of the present invention will be described respectively below.

[0053] The ARP interception processing mainly involves the ARP interception module, the ARP cache table in the ARP cache, and the bridge MAC address in the bridge MAC address memory, wherein the ARP interception module, the ARP cache and the bridge MAC address memory are all set in the aggregation switch .

[0054] The ARP listening module is used to detect and capture the ARP request sent by the neighboring device, and store the ARP cache entry of the neighboring device in the ARP cache; the MAC address and VLAN in the captured ARP message of the neighboring device Modify, that is, replace the source MAC address of the adjacent device i...

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Abstract

This invention relates to a VLAN aggregation method based on ARP interception, a collection exchange and a system, in which, the method includes: the collection exchange intercepts an ARP request message sent by a source host to a destination host to pick up the ARP list information from the ARP request message and puts it into a local ARP buffer storage list of the collection exchange, utilizing information of the destination host to generate ARP response message to be sent to the source host and corrects the IP message sent to the destination host from the source host and transfers the modified message to the destination host based on the local ARP buffer storage list.

Description

technical field [0001] The invention relates to a data exchange network, in particular to an ARP snooping-based VLAN aggregation method, aggregation switch and system. Background technique [0002] Nowadays, among many broadband network construction schemes, IP network stands out in the construction of metropolitan area network due to its unique features such as easy operation, simple management, and technical flexibility, accounting for a large proportion. In many areas, three-layer L3 (layer3) switches are mainly used as the core switching equipment, and VLAN is used as the means and method to provide users with high-speed Ethernet dedicated lines to achieve high-speed Internet access or realize their own data services and other services within the company. , such as video on demand. [0003] In the VLAN networking solution, VLAN aggregation needs to be enabled on the aggregation switch. This is because before VLAN aggregation, all VLANs accessed by users need to be trans...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/28H04L12/46H04L12/54H04L12/931
Inventor 刘建锋宁军
Owner NEW H3C TECH CO LTD
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