WO2012037762A1 - Method and apparatus for configuring address resolution protocol entry - Google Patents

Abstract

A method and apparatus for configuring an address resolution protocol entry are disclosed in the present invention. The method includes: inquiring IP interfaces of a first device and a second device which is connected with the first device by fiber in a Virtual Local Area Network (VLAN) in which the physical port of the second device locates (S101); inquiring the IP interfaces of the first device and the second device under the same network section in the VLAN (S102); acquiring the IP address and the Media Access Control (MAC) address corresponding to the IP interface of the second device under the network section, and establishing a mapping relationship between the IP address and the MAC address (S103); adding the mapping relationship to the address resolution protocol entry corresponding to the IP interface of the first device under the network section (S104). The method and apparatus for configuring an address resolution protocol entry provided by the present invention ensures the correctness of the mapping relationship between the IP address and the MAC address in the address resolution protocol entry, by establishing the mapping relationship between the MAC of the second device and the IP address of the second device which is in the same VLAN and the same network section with the IP interface of the first device, and adding the mapping relationship to the address resolution protocol entry of the first device.

Description

 Address analysis protocol table configuration method and device

Technical field

 The present invention relates to the field of network communication technologies, and in particular, to a method and apparatus for configuring an address resolution protocol table. Background technique

 In the prior art, when a network element device sends data to other network element devices, it needs to know the IP address and medium access control (MAC) address of the other network device. Generally, the network element device can know the IP address of the other network element device; and the MAC address is obtained by searching in the address resolution protocol entry (the address resolution protocol entry includes a matching IP address and a MAC address); The network element device knows the MAC address of the other network element device, and can send data to the other network element device.

 The process of obtaining the MAC address of the target network element device by the source network element device is as follows: First, the source network element device sends an address resolution protocol request to other network element devices, and all other network element devices determine the address after receiving the address resolution protocol request. If the IP address in the protocol request matches the MAC address of the protocol, if the matching, the target network element device sends the response information including the MAC address to the source network element device, and the source network element device obtains the target network according to the response information. The MAC address of the metadevice.

 The foregoing manner of occupying a MAC address of a target network element device by sending an address resolution protocol request to all other network element devices occupies a large amount of transmission resources. In the prior art, the mapping relationship between the IP address of the target network element device and the MAC address is cached in the address resolution protocol entry corresponding to the IP interface of the target network element.

 When the source NE device needs to send data, it first searches for the MAC address matching the IP address of the target network element device in the address resolution protocol table corresponding to its own IP interface. If the MAC address matching the IP address is not found, the MAC address of the target network element device is obtained by sending an address resolution protocol to all other network element devices.

The mapping between an IP address and a MAC address in the above address resolution protocol entry is generally manually configured. Due to the large number of networks, manual configuration errors often occur, causing some network element devices to fail to send data to other network element devices. Summary of the invention

 The main purpose of the present invention is to provide a method and apparatus for configuring an address resolution protocol table, which improves the correctness of the mapping relationship between an IP address and a MAC address in an address resolution protocol entry.

 The present invention provides a method for configuring an address resolution protocol table, which includes:

 Querying a first device IP interface and a second device IP interface in a virtual local area network (V LAN ) where the physical port corresponding to the second device connected to the first device fiber is located;

 Querying the first device IP interface and the second device IP interface in the same network segment from the VLAN; obtaining the IP address corresponding to the second device IP interface and the media access control of the second device (MAC) The address, and the mapping relationship between the IP address and the MAC address is established; and the mapping relationship is added to the address resolution protocol entry corresponding to the IP interface of the first device under the network segment.

 Preferably, before the querying the first device IP interface and the second device IP interface in the V LAN corresponding to the physical port of the second device connected to the first device, the method further includes: determining whether the first a second device to which the device is optically connected;

 If not, establish a fiber connection between the first device and the second device.

 Preferably, the first device is connected to the physical port of the second device by the physical port of the first device; the physical port of the first device and the physical port corresponding to the second device are in the VLAN.

 Preferably, the first device includes: one or more first device IP interfaces; each first device IP interface corresponds to an address resolution protocol entry.

 Preferably, the second device connected to the first device fiber is one or more; each second device includes one or more second device IP interfaces.

The present invention further provides an apparatus for configuring an address resolution protocol table, including:

a first query module, configured to: query a second device that is connected to the first device fiber a first device IP interface and a second device IP interface under a virtual local area network (V LAN ) where the physical port is located;

 a second query module, configured to: query the first device IP interface and the second device IP interface in the same network segment from the VLAN;

 An acquiring module, configured to: obtain an IP address corresponding to a second device IP interface of the network segment, and a media access control (MAC) address of the second device, and establish a mapping relationship between the IP address and the MAC address;

 The module is added, and the mapping relationship is added to the address resolution protocol entry corresponding to the IP address of the first device under the network segment.

 Preferably, the apparatus for configuring an address resolution protocol of the present invention further includes:

 a judging module, configured to: determine whether there is a second device connected to the first device fiber;

 And establishing a module, configured to: establish a fiber connection between the first device and the second device when there is no second device connected to the first device fiber.

 Preferably, the first device is connected to the physical port of the second device by the physical port of the first device; the physical port of the first device and the physical port corresponding to the second device are in the VLAN.

 Preferably, the first device includes: one or more first device IP interfaces; each first device IP interface corresponds to an address resolution protocol entry.

 Preferably, the second device connected to the first device fiber is one or more; each second device includes one or more second device IP interfaces.

The mapping method of the address resolution protocol table provided by the present invention, by establishing the second device MAC, is mapped to the IP address corresponding to the IP address of the second device IP interface of the same device and the IP address of the second device on the same network segment. The mapping relationship is added to the address resolution protocol entry corresponding to the corresponding IP address of the first device, and the configuration speed is fast, which ensures the correctness of the mapping relationship between the IP address and the MAC address in the address resolution protocol entry, thereby ensuring the first device. The address resolution protocol entry is used to accurately find the MAC address of the target second device. BRIEF abstract

 1 is a flowchart of an embodiment of a method for configuring an address resolution protocol of the present invention; FIG. 2 is a flowchart of another embodiment of a method for configuring an address resolution protocol of the present invention; and FIG. 3 is an address resolution protocol of the present invention. FIG. 4 is a schematic structural diagram of another embodiment of an apparatus for configuring an address resolution protocol according to the present invention; FIG.

 Figure 5 is a block diagram showing the structure of a Transport Multi-Protocol Label Switching (T-MPLS) network system according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings. Preferred embodiment of the invention

 It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

 Referring to FIG. 1 , an embodiment of a method for configuring an address resolution protocol table of the present invention is provided. The method includes: Step S101: Query a first virtual local area network (V LAN ) corresponding to a physical port corresponding to a second device connected to the first device fiber. Device IP interface and second device IP interface;

 Step S102: Query, from the VLAN, the first device IP interface and the second device IP interface in the same network segment;

 Step S103: Obtain an IP address corresponding to the second device IP interface of the network segment and a media access control (MAC) address of the second device, and establish a mapping relationship between the IP address and the MAC address.

 Step S104: Add the mapping relationship to an address resolution protocol entry corresponding to the IP address of the first device under the network segment.

The MAC address of the second device is obtained from a database in the T-MPLS network system. The MAC address of all network element devices in the T-MPLS network system is recorded in the database. The MAC address of each network element device is the sum of the rack MAC address of the network element device and the corresponding offset value.

 Further, referring to FIG. 2, another embodiment of the method for configuring an address resolution protocol table of the present invention is provided, which includes:

 Step S201, determining whether there is a second device connected to the first device fiber;

 Step S202, if not, establishing a fiber connection between the first device and the second device; Step S203: Querying a first device in a virtual local area network (VLAN) where the physical port corresponding to the second device connected to the first device fiber is located IP interface and second device IP interface;

 Step S204: Query, from the VLAN, the first device IP interface and the second device IP interface in the same network segment;

 Step S205: Obtain an IP address corresponding to the IP address of the second device under the network segment and a Media Access Control (MAC) address of the second device, and establish a mapping relationship between the IP address and the MAC address.

 Step S206: Add the mapping relationship to an address resolution protocol entry corresponding to the IP address of the first device under the network segment.

 The steps S203 to S206 of the embodiment are the same as the steps S101 to S104 of the previous embodiment, and details are not described herein again.

 In the above step S201, it is determined whether there is a second device connected to the first device fiber, which is based on the first device topology connection obtained in the T-MPLS network system database, and if the topology connection of the first device is empty, There is no second device connected to the first device fiber.

 Further, in the above embodiment, the first device is connected to the physical port of the first device through the physical port of the first device; the physical port of the first device and the physical port corresponding to the second device are in the VLAN. .

 The information about the first device IP interface and the second device IP interface under the VLAN and under the same network segment may be recorded in a set table.

Further, in the above embodiment, the first device includes: one or more first device IP interfaces; each first device IP interface corresponds to an address resolution protocol entry. Further, in the above embodiment, the second device connected to the first device fiber is one or more; each second device includes one or more second device IP interfaces.

 If the second device includes multiple different second devices, the different second devices have different IP interfaces, and the corresponding MAC addresses are different.

 If the second device in the VLAN and in the same network segment includes the second device 1, 2, 3, 4, each second device includes a second device IP interface. The IP address corresponding to the IP interface of the second device 1 is a, the IP address corresponding to the IP interface of the second device 2 is b, and the IP address corresponding to the IP interface of the second device 3 is c, and the IP address of the second device 4 The IP address corresponding to the interface is d; the MAC address of the second device 1 is k, the MAC address of the second device 2 is w, the MAC address of the second device 3 is X, and the MAC address of the second device 4 is y.

 The IP address and MAC address mapping relationship 1 is: IP address a corresponds to MAC address k; IP address b corresponds to MAC address w; IP address c corresponds to MAC address x; IP address d corresponds to MAC address y.

 If a second device includes multiple second device IP interfaces, for example, the second device 1 includes two IP interfaces, one of the IP interfaces corresponding to the IP address is al, and the other IP interface corresponding to the IP address is a2; The device 3 includes two IP interfaces. The IP address corresponding to one IP interface is cl, and the IP address corresponding to the other IP interface is c2.

 The IP address and MAC address mapping relationship 2 is: IP address a corresponds to MAC address k; IP address a2 corresponds to MAC address k; IP address b corresponds to MAC address w; IP address cl corresponds to MAC address X; IP address c2 Corresponding to the MAC address x; the IP address d corresponds to the MAC address y; and so on.

 If the IP address of the first device in the VLAN and the first device is only the first device IP interface I, the IP address and MAC address mapping relationship 1 or 2 is added to the address resolution protocol corresponding to the IP address I of the first device. Within the table.

If the first device IP interface in the VLAN and the same network segment includes multiple, including the first device IP interface I and the first device IP interface II, the mapping between the IP address and the MAC address is 1 or 2 , respectively, added to the address resolution protocol entry corresponding to the IP interface I and II of the first device, and so on. The method for configuring an address resolution protocol table provided by this embodiment, by establishing a second device

The MAC address, the mapping relationship between the IP address corresponding to the IP address of the second device and the IP address of the second device on the same network segment, and the mapping relationship is added to the address resolution protocol entry corresponding to the IP interface of the corresponding first device. The configuration is fast, and the correct mapping between the IP address and the MAC address in the address resolution protocol entry is ensured. Therefore, the first device can accurately find the MAC address of the target second device through the address resolution protocol entry.

 In addition, the configuration method of the address resolution protocol table provided in this embodiment has the advantage of quick configuration speed compared to the manual configuration of the prior art.

Referring to FIG. 3, an embodiment of the apparatus 10 for configuring an address resolution protocol of the present invention is provided. The method includes: a first query module 11, a second query module 12, an obtaining module 13, and an adding module 14. The first query module 11 is configured to query the first device IP interface and the second device IP interface under the virtual local area network (V LAN ) where the physical port corresponding to the second device connected to the first device fiber is located. The second query module 12 is configured to query, from the VLAN, the first device IP interface and the second device IP interface under the same network segment. The obtaining module 13 is configured to obtain an IP address corresponding to the second device IP interface of the network segment and a media access control (MAC) address of the second device, and establish a mapping relationship between the IP address and the MAC address. The adding module 14 is configured to add the mapping relationship to an address resolution protocol entry corresponding to the IP interface of the first device in the network segment.

 The MAC address of the second device is obtained from a database in the T-MPLS network system, and the MAC address of all the network element devices in the T-MPLS network system is recorded in the database. The MAC address of each network element device is the sum of the rack MAC address of the network element device and the corresponding offset value.

Further, referring to FIG. 4, another embodiment of the address resolution protocol table configuration apparatus 20 of the present invention is provided, which includes: a determining module 21, an establishing module 22, a first querying module 23, a second querying module 24, and an obtaining module 25. , join module 26. The first query module 23, the second query module 24, the obtaining module 25, and the joining module 26 are respectively consistent with the functions of the modules of the same name in the foregoing embodiments, and details are not described herein again. The determining module 21 is configured to determine whether there is a second device connected to the optical fiber of the first device. The establishing module 22 is configured to establish a fiber connection between the first device and the second device when there is no second device connected to the first device fiber. Wherein, determining whether there is a second device connected to the optical fiber of the first device is based on

The first device topology connection obtained in the T-MPLS network system database, if the top connection of the first device is empty, it indicates that there is no second device connected to the first device fiber.

 Further, the first device in the configuration device 20 of the address resolution protocol table is connected to the physical port optical fiber corresponding to the second device by using the physical port of the first device; the physical port corresponding to the physical port of the first device and the second device The port is in the VLAN.

 The information about the first device IP interface and the second device IP interface under the VLAN and under the same network segment may be recorded in a set table.

 Further, the first device in the configuration device 20 of the address resolution protocol table includes: one or more first device IP interfaces; each first device IP interface corresponds to an address resolution protocol entry.

 Further, the second device that is optically connected to the first device in the configuration device 20 of the address resolution protocol table is one or more; each second device includes one or more second device IP interfaces.

 If the second device includes multiple different second devices, the different second devices have different IP interfaces, and the corresponding MAC addresses are different.

 If the second device in the VLAN and in the same network segment includes the second device 1, 2, 3, 4, each second device includes a second device IP interface. The IP address corresponding to the IP interface of the second device 1 is a, the IP address corresponding to the IP interface of the second device 2 is b, and the IP address corresponding to the IP interface of the second device 3 is c, and the IP address of the second device 4 The IP address corresponding to the interface is d; the MAC address of the second device 1 is k, the MAC address of the second device 2 is w, the MAC address of the second device 3 is X, and the MAC address of the second device 4 is y.

 The IP address and MAC address mapping relationship 1 is: IP address a corresponds to MAC address k; IP address b corresponds to MAC address w; IP address c corresponds to MAC address x; IP address d corresponds to MAC address y.

If a second device includes multiple second device IP interfaces, for example, the second device 1 includes two IP interfaces, one of which corresponds to an IP address of _a l and the other IP interface has an IP address of a2; The second device 3 includes two IP interfaces, and one of the IP interfaces corresponds to an IP address of cl. The IP address corresponding to an IP interface is c2.

 The IP address and MAC address mapping relationship 2 is: IP address a corresponds to MAC address k; IP address a2 corresponds to MAC address k; IP address b corresponds to MAC address w; IP address cl corresponds to MAC address X; IP address c2 Corresponding to the MAC address x; the IP address d corresponds to the MAC address y; and so on.

 If the IP address of the first device in the VLAN and the first device is only the first device IP interface I, the IP address and MAC address mapping relationship 1 or 2 is added to the address resolution protocol corresponding to the IP address I of the first device. Within the table.

 If the first device IP interface in the VLAN and the same network segment includes multiple, including the first device IP interface I and the first device IP interface II, the mapping between the IP address and the MAC address is 1 or 2 , respectively, added to the address resolution protocol entry corresponding to the IP interface I and II of the first device, and so on.

 The mapping device of the address resolution protocol of the embodiment is configured by establishing a mapping relationship between the second device MAC and the IP address corresponding to the IP address of the second device and the second device IP interface of the first device. The relationship is added to the corresponding address resolution protocol entry corresponding to the IP address of the first device. The configuration is fast, ensuring the correctness of the mapping between the IP address and the MAC address in the address resolution protocol entry. Therefore, the first device passes the address. The resolution protocol entry accurately finds the MAC address of the target second device.

 In addition, the device for configuring the address resolution protocol table provided in this embodiment has the advantage of quick configuration speed compared to the manual configuration of the prior art.

 The device for configuring the address resolution protocol table provided in this embodiment may be separately set or may be set in the first device.

The first device and the second device described in the foregoing embodiments are network element devices in the T-MPLS network system. The following is a specific example of the present invention:

 5 is a schematic structural diagram of a T-MPLS network system, which includes network element devices NE1, NE2, NE3, and NE4, and the NE1 is connected to NE2, NE3, and NE4, respectively.

The connection between NE1 and NE2 is through the physical ports of NE1, Gei-1/9 and NE2. Physical port Gei-1/10 fiber connection implementation. Among them, the Gei-1/9 of NE1 is in VLAN 2, the IP address corresponding to the IP interface of NE1 in VLAN 2 is 192.168.100.1, the Gei-1/10 of NE2 is in VLAN 2, and the IP address corresponding to the IP interface of NE2 in VLAN 2 is 192.168.100.2.

 The connection between NE1 and NE3 is realized by the physical port Gei-1/10 of NE1 and the Gei-1/10 fiber connection of the physical port of NE2. Among them, the Gei-1/10 of NE1 is in VLAN3, the IP address of the IP interface of NE1 in VLAN3 is 192.168.200.1, the Gei-1/10 of NE3 is in VLAN 4, and the IP address corresponding to the IP interface of NE3 in VLAN 4 is 192.168. .200.2.

 The connection between NE1 and NE4 is realized by the physical port Gei-1/1 of NE1 and the physical port Gei-1/10 fiber of NE2. Among them, the Gei-1/1 of NE1 is in VLAN 2, the IP address corresponding to the IP interface of NE1 in VLAN 2 is 192.168.200.1, the Gei-1/10 of NE4 is in VLAN 2, and the IP address corresponding to the IP interface of NE4 in VLAN 2 is 192.168.100.3.

 As shown in the above, the IP interface in the VLAN 2 includes: the IP interface corresponding to the IP address 192.168.100.1 of the IP1 in the VLAN 2 and the IP interface corresponding to the IP address 192.168.200.1, and the IP interface corresponding to the IP address 192.168.100.2 of the NE2 in the VLAN 2. The IP interface corresponding to the IP address 192.168.100.3 of the NE4 in VLAN 2.

 The IP interfaces on the same network segment of the IP interface in VLAN 2 include: IP interface corresponding to IP address 192.168.100.1 of NE1 in VLAN 2, IP interface corresponding to IP address 192.168.100.2 of NE2 in VLAN 2, and VLAN 4 of NE4 in VLAN 2. The IP address corresponding to the IP address 192.168.100.3.

 Therefore, the IP address of 192.168.100.2 of NE2 is mapped to the MAC address of NE2, and the mapping relationship is added to the address resolution protocol of the IP interface corresponding to IP address 192.168.100.1 in NE1.

 At the same time, the IP address of 192.168.100.3 of NE4 is mapped to the MAC address of NE4, and the mapping relationship is added to the address resolution protocol of the IP interface corresponding to IP address 192.168.100.1 in NE1.

Although the preferred embodiments of the present invention have been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions are possible. In the above embodiment.

 One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

Industrial applicability

 The method and device for configuring an address resolution protocol table provided by the present invention, by establishing a second device

The MAC address, the mapping relationship between the IP address corresponding to the IP address of the second device and the IP address of the second device on the same network segment, and the mapping relationship is added to the address resolution protocol entry corresponding to the IP interface of the corresponding first device. The configuration is fast, and the correct mapping between the IP address and the MAC address in the address resolution protocol entry is ensured. Therefore, the first device can accurately find the MAC address of the target second device through the address resolution protocol entry.

Claims

Claim A method for configuring an address resolution protocol entry, which includes:  Querying a first device IP interface and a second device IP interface in a virtual local area network (VLAN) where the physical port corresponding to the second device connected to the first device fiber is located;  Querying the first device IP interface and the second device IP interface in the same network segment from the VLAN; obtaining the IP address corresponding to the second device IP interface and the media access control of the second device (MAC) The address, and the mapping relationship between the IP address and the MAC address is established; and the mapping relationship is added to the address resolution protocol entry corresponding to the IP interface of the first device under the network segment. The method for configuring an address resolution protocol table according to claim 1, wherein the querying the first device IP interface and the second device IP in the VLAN where the physical port corresponding to the second device connected to the first device fiber is located Before the interface, the method further includes:  Determining whether there is a second device connected to the first device fiber;  If not, establish a fiber connection between the first device and the second device. The method for configuring an address resolution protocol table according to claim 1 or 2, wherein the first device is connected to a physical port optical fiber corresponding to the second device by using the first device physical port; the first device physical port The physical port corresponding to the second device is in the VLAN. The method for configuring an address resolution protocol table according to claim 3, wherein the first device comprises: one or more first device IP interfaces; each first device IP interface corresponds to an address resolution protocol entry . The method for configuring an address resolution protocol table according to claim 4, wherein the second device connected to the first device fiber is one or more; each second device includes one or more second devices. Device IP interface. 6. An apparatus for configuring an address resolution protocol entry, comprising: a first query module, configured to: query a first device IP interface and a second device IP interface under a virtual local area network (V LAN) where the physical port corresponding to the second device connected to the first device fiber is located; The setting is: querying the first device IP interface and the second device IP interface in the same network segment from the VLAN;  An acquiring module, configured to: obtain an IP address corresponding to a second device IP interface of the network segment, and a media access control (MAC) address of the second device, and establish a mapping relationship between the IP address and the MAC address;  The module is added, and the mapping relationship is added to the address resolution protocol entry corresponding to the IP address of the first device under the network segment. The device for configuring an address resolution protocol table according to claim 6, wherein the device further comprises:  a judging module, configured to: determine whether there is a second device connected to the first device fiber;  And establishing a module, configured to: establish a fiber connection between the first device and the second device when there is no second device connected to the first device fiber. The apparatus for configuring an address resolution protocol table according to claim 6 or 7, wherein the first device is connected to a physical port optical fiber corresponding to the second device by using the first device physical port; the first device physical port The physical port corresponding to the second device is in the VLAN. The device for configuring an address resolution protocol table according to claim 8, wherein the first device comprises: one or more first device IP interfaces; each first device IP interface corresponds to an address resolution protocol entry . The apparatus for configuring an address resolution protocol table according to claim 9, wherein the second device connected to the first device fiber is one or more; each second device includes one or more second devices. Device IP interface.