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IP address assignment method and system

A technology of IP address and allocation method, applied in the field of communication, can solve the problems of no management relationship, unfavorable refinement of terminal IP address management, inconvenient identification of subnet subvlan, etc., and achieve the effect of increasing refinement

Inactive Publication Date: 2009-09-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the IP address is assigned to each terminal according to the IP address network segment where the IP gateway address of the supervlan of the supernet is located, the IP address of each terminal in each subvlan subvlan is arbitrarily assigned, that is, the IP address of the terminal and the network to which it belongs There is no good management relationship between the subnet subvlans, and it is not convenient to identify the subnet subvlan to which the terminal belongs through the IP address of the terminal, which is not conducive to the refinement of terminal IP address management

Method used

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  • IP address assignment method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0088] see figure 2 As shown, in the VLAN Aggregtion networking, use DHCP Dynamic Host Configuration Protocol (DHCP) to provide an IP address allocation method based on the principle of assigning IP addresses to terminals according to the network segment. The following combines the execution subject to assign an IP address to each subnet subvlan Address subnet segment, the DHCP relay device sends the subnet segment identification to the DHCP server through the DHCP user group information option option77 of the DHCP IP address request message as an example to illustrate the IP address allocation method:

[0089] It can be known that it is necessary to build a virtual local area network on the DHCP relay device, configure the supernet supervlan and each subnet subvlan, then add the subnet subvlan to the supernet supervlan, and configure a virtual local area network interface, such as a vlanif interface, for the supernet supervlan. The following embodiments Take the vlanif inter...

Embodiment 2

[0096] see image 3 , 4 As shown, corresponding to the IP address allocation method of Embodiment 1, the embodiment of the present invention provides a DHCP relay device, and an IP address subnet segment is allocated with each subnet subvlan below, and the DHCP relay device requests the message through the DHCPIP address The link selection sub-item link selection sub-option 5 in the DHCP relay agent information option option 82 carries any IP address in the subnet segment of the IP address and sends it to the DHCP server as an example to illustrate the DHCP relay device and build a virtual local area network The steps are not repeated here:

[0097] 11. The IP address subnet segment distribution unit 30 distributes the IP address subnet segment in the IP address segment of the supernet supervlan for each subnet subvlan;

[0098] 12. The binding table storage unit 50 stores a binding table based on the IP address subnet segment, the binding table includes the IP address subne...

Embodiment 3

[0104] Refer to the IP address allocation method provided by the first implementation with the DHCP relay device as the execution subject. The embodiment of the present invention also provides an IP address allocation method. See Figure 5 As shown, below in conjunction with the execution subject, take the DHCP server receiving the DHCP IP address request message DHCP user group information option Option77 to obtain the subnet segment identification as an example, and specifically illustrate the IP address allocation method:

[0105] 15. The DHCP server receives the DHCP IP address request message DHCP user group information option Option77;

[0106] 16. The DHCP server confirms the corresponding IP address subnet segment according to the DHCP user group information option Option77, and allocates an IP address for the terminal in the IP address pool of the IP address subnet segment.

[0107] Among them, it is necessary to allocate an IP address pool for the IP address subnet s...

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PUM

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Abstract

The embodiment of the invention provides an IP address assignment method, DHCP truck equipment, a DHCP server and an IP address assignment system; wherein, an IP address assignment method comprises: receiving an IP address request message from the dynamic host configuration protocol (DHCP) of the terminal, and obtaining the subvlan to which the terminal belongs and the IP address subnet section corresponding to the subvlan; according to the IP address subnet section, determining the subnet section mark corresponding to the same, transmitting the subnet section mark to the DHCP server so that the DHCP server can assign the IP addresses in the IP address subnet section for the terminal. The IP address of the terminal and the subvlan to which the terminal belongs have good management relation which facilitates the identification of the subvlan to which the terminal belongs by the IP address of the terminal, thus improving the elaboration of the IP address management.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an IP address allocation method and system. Background technique [0002] VLAN Aggregtion (Virtual Local Area Network Aggregation, Virtual Local Area Network Aggregation) is a management technology for optimizing IP addresses, which includes subvlan (subnet) and supervlan (supernet). like figure 1 As shown, VLAN3 is a supervlan of a supernet, VLAN1 and VLAN2 are subvlans of a subnet, and VLAN1 and VLAN2 include terminals, such as PCs. All subnet subvlans in the supernet supervlan share one IP gateway address and one IP address network segment. Using VLAN Aggregtion technology for IP address allocation can effectively save the number of IP addresses. [0003] At present, in the networking of the VLAN aggregation technology, a DHCP (Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) method is usually used to assign an IP address to a terminal accord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
Inventor 郝卫国张晓益施震宇
Owner HUAWEI TECH CO LTD
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