KR20060019004A - How to configure IPV6 link local address in ATM interface - Google Patents

Abstract

The present invention relates to an IPV6 address setting method when starting an AMT interface, and more particularly, to an IPV6 link local address configuring method in an AMT interface for configuring an IPV6 link local address so as not to overlap. will be.

In order to achieve the above object, the IPV6 link local address configuration method of the AMT interface of the present invention acquires a 48-bit MAC address of a management Ethernet interface at startup of an AMT interface. The first process, the second process of inserting the board position information after the first process, and after the second process, the 64-bit interface ID (interface ID) is generated by adding the board position information and the MAC address of the Ethernet port. And a fourth process of generating a link local address by adding the subnet prefix added with the interface ID and fe80 generated in the third process.

IPV4, IPV6, ATM, Link Local Address, Interface ID

Description

A link local address setting method on the ATM interface

1 is a diagram showing an Ethernet address allocation method in IP4 (IPv4) in the prior art,

2 is a diagram illustrating an address system of IP6;

FIG. 3 is a view showing a form of a link local address using an EUI-64 method in the case of an Ethernet interface in the prior art. FIG.

4 is a flowchart illustrating a process of generating a link local address in FIG.

FIG. 5 is a diagram illustrating an IP6 link local address format in an AMT interface according to the present invention; FIG.

FIG. 6 is a flowchart for generating an IP6 link local address of FIG. 5.

The present invention relates to a method of setting an IPV6 address at the start of an AMT interface, and more particularly, to an IPV6 link local address configuration method of an AMB interface for configuring an IPV6 link local address so as not to be duplicated. It is about.

Due to the change of computer usage environment and the increase of users, the newly established IPv6 addressing system (1) due to the exhaustion of the IP4 (IPv4) address shown in FIG. (subnet prefix) (2) n-bit and 128-n-bit interface ID (3). The IPV6 address system 1 having the above-described configuration is divided into a link-local address and a global address. For link local addresses, fe80 is entered in the subnet prefix. The link-local address is automatically generated at interface startup and is used for communication within the same link by assigning an address without interworking with the router.The global address is automatically generated or specified by the operator and communicated with other nodes. Is used.

In the case of the Ethernet interface in the above-described address system, as shown in FIG. 3, a 64-bit subnet prefix 2 'and a 64-bit interface ID 3' are formed in the EUI-64 method. IPV6 link local address (1 ') is configured and used. At this time, since MAC used in EUI-64 method is the only address in the world, the link local address set at the start of AMT interface is not duplicated.

FIG. 4 is a diagram illustrating a process for generating an IPv6 link local address using a MAC address of the address generation method according to the EUI-64 method of FIG. 3 described above.                         

As shown in FIG. 4, the process for generating an IPv6 link local address of FIG. 3 brings a 48-bit MAC (MAC) address of an Ethernet interface at the startup of the AT interface (S1). Next, a 2-byte delimiter fffe (30) is inserted between the 24-bit manufacturer's address (eg, 0000AA) 10 of the 48-bit MAC address and the 24-bit manufacturer's assigned serial number (eg; DDEEFF) 20 (S2). . After the process S2, it is determined whether the interface ID is configured by the reason eye 64 (EUI-64) method (S3). As a result of the determination in S3, the global bit (1) is changed by changing the 7th bit of the first 1 byte of the 3 bytes representing the manufacturer to 1, as shown in FIG. 3, which generates the interface ID using the EUI-64 method. Set to create a 64-bit interface ID (S4). In the case of generating the interface ID in a manner other than the reason E64 (EUI-64) method in S3, the fifth process of generating the 64-bit interface ID is performed without setting the global bit. Next, after the S4 process or after the global bit setting (S4) is not performed in the S3 process, a link local address is generated by combining the subnet prefix inserted with fe80 and the 64-bit interface ID. (S5). That is, in the case of the Ethernet interface, as shown in Figs. 3 and 4, by generating the link local address by the EUI-64 method, it is possible to prevent the duplication of its own link local address and the neighbor node.

However, since the ATM interface does not have a unique address system like the Ethernet interface, address duplication may occur when the link local address is arbitrarily assigned. In addition, such an address duplication may cause a problem that the interface cannot be used because the address allocation of the interface is not completely performed and communication with the neighbor node cannot be performed.

Accordingly, the present invention is to solve the above-mentioned problems in the prior art, to create an IP6 link local address at the start of ATM interface (48) of the Ethernet port for system management Configure the interface ID by adding the board location information to the bit MAC address, and configure the link local address of the unique address by combining the configured interface ID with the subnet prefix with fe80 indicating the link local prefix. It is an object of the present invention to provide a method for constructing an IP6 link local address in a TEM interface.

In order to achieve the above object, the IPV6 link local address configuration method of the AMT interface of the present invention acquires a 48-bit MAC address of a management Ethernet interface at startup of an AMT interface. The first process, the second process of inserting the board position information after the first process, and after the second process, the 64-bit interface ID (interface ID) is generated by adding the board position information and the MAC address of the Ethernet port. And a fourth process of generating a link local address by adding the subnet prefix inserted with fe80 to the interface ID generated in the third process.

The board position information of the second process includes 2 bits of a rack number (R: rack number) where the board is located, 2 bits of a shelf number (S) where the board is located, and a slot number (L :) where the board is located. Slot Number) 4 bits, 4 bits of reserved (R: reserved) for future use, and the port number (P: port Number) of the board is characterized by consisting of 4 bits. In the second process, the board position information is inserted into a position of an initial two bytes of the interface ID.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 5 is a diagram illustrating a format 100 of an IP6 link local address in an AT interface according to the present invention, and FIG. 6 is a process for generating an IP6 link local address 100 in an AT interface of FIG. 5. A flowchart showing the process.

As shown in Fig. 5, the IPv6 link local address 100 of the ATM interface according to the present invention has a total size of 128 bits and a subnet prefix of 64 bits in total. ) And the latter 64-bit interface ID. In the interface ID, the board position information 103 is inserted at the position of 2 bytes shown in FIG. The above-described board position information 103 includes rack number (R) 2 bits 104 where the board is located, shelf number (S) 2 bits 105 where the board is located, and the board is located. Slot number (L: Slot Number) 4 bits 106, reserved (R: reserved) 4 bits 107 for future use, and port number (P: port number) 4 bits (108) of the board. ) And has a total size of 2 bytes. The board position information 103 is inserted at a position of 2 bytes of the interface ID 102. After the two bytes indicating the location information 103 of the interface ID 102, a 48-bit MAC address 110 is inserted to generate a 64-bit interface ID 102. Next, a total of 128 bits of link-local addresses are generated by combining the subnet prefix 101 as a link local prefix with fe80 inserted into the 64-bit interface ID 102.

Next, a process for generating a 128-bit link local address of FIG. 5 will be described with reference to FIG. 6.

As shown in Fig. 6, a 48-bit MAC (MAC) address of a management Ethernet interface is acquired at startup of the AT interface (S10). Next, the board position information of 2 bytes described in Fig. 5 is inserted. The above-described two-byte board position information 103 has the configuration as described in FIG. 5 and is inserted in the two-byte position of the interface ID as shown in FIG. 5 (S20). After the above-described S20 process, the 64-bit interface ID is configured by adding the MAC address of the Ethernet port of 2 bytes and 4 bytes of board position information (S30). After the step S30, a uniquely identified link local address 100 is generated by adding the generated 64-bit interface IDs to the subnet prefix in which fe80 indicating the link local prefix is inserted (S40).

In the above-described invention, it is possible to generate a link local address that is uniquely identified in configuring a link local address for an AMT interface, thereby preventing duplication of a link local address with another node to perform normal communication with an adjacent node. It provides the effect that it can

Claims (3)

A first step of obtaining a 48-bit MAC address of the management Ethernet interface, A second process of inserting board position information after the first process; A third step of generating a 64-bit interface ID by adding the board location information and the MAC address of the Ethernet port after the second step; And a fourth process of generating a link local address by adding the subnet prefix inserted with fe80 to the interface ID generated in the third process. The board position information of claim 2, wherein the board position information of the second process includes: rack number 2 bits in which the board is located, self number 2 bits in which the board is located, slot number 4 bits in which the board is located, and for later use. A method for constructing an IPV6 link local address in an ATM interface, comprising 4 bits of a spare and 4 bits of a port number of a board. The method of claim 1 or 2, wherein the board position information is inserted at a position of an initial two bytes of the interface ID.

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