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ARP (Address Resolution Protocol) agent method based on different VLANs ((Virtual Local Area Networks)

A technology of ARP proxy and ARP request, which is applied in the field of routing, can solve the problems of reduced efficiency of the entire network, and achieve the effect of improving operating efficiency

Inactive Publication Date: 2016-06-08
江苏华御威盾网络科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional proxy ARP is broadcast in the whole network, which reduces the efficiency of the whole network

Method used

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  • ARP (Address Resolution Protocol) agent method based on different VLANs ((Virtual Local Area Networks)

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Embodiment Construction

[0016] The ARP proxy method based on different VLANs provided by the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] Such as figure 1 As shown, a kind of ARP agent method based on different VLANs that the embodiment of the present invention provides, is characterized in that, comprises the following steps:

[0018] S1: HostA (VLAN10) wants to communicate with another host, HostC (VLAN40), and HostA directly sends an ARP request. The content of the request includes: source IP, source MAC, VLANtag, and destination IP;

[0019] S2: After receiving the ARP request, the device running proxy ARP searches the local ARP cache list. If the corresponding entry (including HostC's IP and MAC) is found, the proxy ARP immediately responds to HostA's information about the destination HostC; if not found For the corresponding table entry, proxy ARP will pre-cache different network segments between different VLANs int...

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Abstract

The invention discloses an ARP (Address Resolution Protocol) agent method based on different VLANs ((Virtual Local Area Networks). The ARP agent method is characterized by comprising the following steps that: a HostA (VLAN10) hopes to be communicated with another host HostC (VLAN40), and the HostA directly sends an ARP request; after receiving the ARP request, an apparatus applying an agent ARP searches a local ARP cache list, and if corresponding table items (comprising an IP (Internet Protocol) and MAC (Media Access Control) of the HostC) are found, the agent ARP immediately responds related information of going to the target HostC to the HostA; when a frame of a source address to a certain network segment is received, network segments in the agent ARP cache list are searched, and then a data packet is broadcast in a corresponding VLAN area (reduction of whole network efficiency, which is caused by whole network broadcasting, is avoided, and a request response rate is improved); and after receiving a broadcast, the HostC immediately responds to an ARP response and notifies an MAC address of the HostC, and after receiving the ARP request, the agent ARP apparatus notifies the MAC of E0 / 0 to the HostA. According to the ARP agent method based on different VLANs, which is provided by the invention, whole network operation efficiency is promoted.

Description

technical field [0001] The invention relates to the technical field of routing, in particular to an ARP proxy method based on different VLANs. Background technique [0002] As the identity of the host in the network, the IP address is a logical address, but in actual communication, the physical network still uses the physical address, and the IP address cannot be identified by the physical network. Therefore, when data is transmitted on a physical network, a mapping relationship needs to be established between a logical IP address and a physical MAC address. This mapping between addresses is called Address Resolution (AddressResolution). ARP is a protocol used to dynamically resolve an IP address into a MAC address. The traditional proxy ARP is broadcast in the whole network, which reduces the efficiency of the whole network. [0003] Therefore, prior art needs to be improved. Contents of the invention [0004] In order to solve the deficiencies of the prior art, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/46
Inventor 蒋斐孙星星
Owner 江苏华御威盾网络科技有限公司
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