JP2000183874A - Method and proxy server system for multi-protocol network management, server system for multi-protocol address management, and multiprotocol network management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a network management server system, which supports only one kind of communication protocol in a network where different kind of communication protocols coexists, to manage a network which uses another communication protocol and to suppress alterations of the network management server system extremely small at this time. SOLUTION: In this network, two kind of communication protocols IPv4 and IPv6 coexist and the network management server 110 which supports only the IPv4 operates. In this case, the network management proxy server system 130 stores an IPv4 address to which the address management server system 120 is dynamically assigned for a node 103a given an IPv6 address while making it correspond to the IPv6 address, and a network management command which is issued by the network management server system 110 to the node 103a and uses the IPv4 address is temporarily received and transferred after being converted into a network management command using an IPv6 address.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an Internet protocol (IPv4: IP version 4) which has been conventionally used, and a next-generation Internet protocol (IPv4) which has been standardized in recent years and is expected to spread in the near future.
6: a technology for efficiently managing a network in which a plurality of types of communication protocols are mixed, such as IP version 6).

[0002]

2. Description of the Related Art Conventionally, Internet Protocol (IP) has been widely used as a communication protocol for connecting to the Internet.

[0003] However, due to the rapid spread of the Internet in recent years, the number of network sites connected to the Internet has exploded, and the conventional IP (IPv4)
Addresses could be exhausted in a few years. For this reason, the Internet Technology Standardization Committee (IE)
TF: Internet Engineering Task Force)
IPv6, which replaces the conventional IPv4 and has a new address system and expanded functions, has been formulated as a standard protocol.

On the other hand, as a system for managing computer devices on a network, a standard document issued by IETF (RF
C1907: Request for Comment 1907) Simple network management protocol (SNMP: Si
mple Network Management Protocol) is generally adopted, and it is possible to refer to the setting status of each computer device and change the settings of some computer devices. For this reason, with respect to a conventional network employing IPv4, this SNMP technology is widely adopted for network management.

[0005]

However, since it is not practical to simultaneously shift the communication protocol adopted by all network sites connected to the Internet to IPv6, IETF adopts both IPv4 and IPv6 at the same time. A transition period was established, and a plan was established to sequentially switch the Internet standard protocol to IPv6. Therefore, as a result, in many network sites, IPv4 and IPv6 are mixed for a considerably long period of time.

When trying to manage a network in which IPv4 and IPv6 coexist, it is possible to manage a conventional IPv4 logical network by SNMP, but to manage an IPv6 logical network. It is necessary to make the conventional network management server system compatible with IPv6. In addition, IPv4
In the case of managing a network in which IPv6 and IPv6 coexist, it is necessary to accurately distinguish between IPv4 and IPv6, and to provide an environment in which the entire network can be efficiently managed through both networks.

FIG. 2 is a diagram showing an example of a network in which IPv4 and IPv6 coexist.

As shown in FIG. 2, in the present network, a router 101 capable of performing route control of both IPv4 and IPv6 protocols, and a switch device / hub device capable of relaying the network regardless of the protocol. (SW / HUB) 102 and end nodes 103 interconnected by these devices
Pv4 segment 105 and IPv6 segment 10
4 are configured.

[0009] Here, the end node 103 a
v6 segment 104, end node 103b,
103c is assumed to belong to the IPv4 segment 105. It is assumed that this network is connected to the Internet 106 via the router 101.

The address and host name of each end node 103 are dynamically or statically managed by the address management server system 120 and its management database (DB) 120a.

At this time, if the conventional network management server system 110 is used, the range of the network that can be managed by the network administrator is limited to end nodes 103b and 103c to which addresses and host names based on IPv4 conventionally used are assigned. End node 1 which is limited to the IPv4 segment 105 to which the
The IPv6 segment 104 to which 03a belongs cannot be managed.

In FIG. 2, the network management server system 110 and the address management server system 12
0 operate on independent computer devices, respectively, but it is also conceivable that they operate on the same computer device.

As described above, in a network in which a plurality of types of communication protocols are mixed, when a network management server system that supports only one type of communication protocol is used, a network that adopts another type of communication protocol cannot be managed. There was a point.

An object of the present invention is to make it possible to collectively manage a network in which a plurality of types of communication protocols coexist by minimizing a change in a network management server system.

More specifically, an object of the present invention is to provide a network management server system that supports only one type of communication protocol in a network in which a plurality of types of communication protocols are mixed. Is to be managed, and at that time, it is possible to minimize the change of the network management server system.

[0016]

In order to achieve the above object, according to the present invention, two types of communication protocols P1 and P2 are mixed and a network management command using an address A1 based on the communication protocol P1 is issued. Accordingly, in a network in which a network management server system that manages nodes on the network is operating, at least one server system operating on the network is configured to have an address A2 based on the communication protocol P2.
Is dynamically assigned to a node (hereinafter, referred to as “node X”) to which the node A is assigned, and the address A1 assigned to the node X;
The network management server system is notified of the physical identification information of the node X, and the address A1 assigned to the node X, the address A2 of the node X, and the physical identification information of the node X are associated with each other. A network management command using the address A1 of the node X issued from the network management server system by specifying the node X is received, and the received network management command is stored in the address A of the node X.
After converting it to a network management command using
Transferred to the node X, the network management server system specifies the node X based on the physical identification information of the node X.

[0017] Thus, even if the network management server system does not make a significant change to support IPv6, the network management server system can perform network management without being aware of the operation protocol of the end node to be managed. It is possible to do.

Specifically, according to the present invention, as a first aspect, two types of communication protocols P1 and P2 are mixed, and a network management command using an address A1 based on the communication protocol P1 is issued. In a network in which a network management server system that manages nodes on the network is operating, a proxy server system that operates on the network, and to a node X to which an address A2 based on the communication protocol P2 is assigned. A dynamically allocated address A1 based on the communication protocol P1 and the node X
Reference means for referring to an address conversion table in which the address A2 of the node X and the physical identification information of the node X are stored in association with each other, and the network management server specifying the node X by the physical identification information A network management command using the address A1 of the node X issued from the system is temporarily received, and the received network management command is transferred to the address A2 of the node X based on the reference result of the address conversion table by the reference means. And a conversion means for converting the command into a network management command using a network protocol and transferring the command to the node X. A multi-protocol network management proxy server system is provided.

Here, the physical identification information of the node may be a physical address unique to the network port.

The present invention also provides, as a second aspect, the first aspect.
In the aspect, further comprising a receiving unit for receiving a designation that the node X to which the address A2 is assigned is to be managed by the network management server system, wherein the converting unit designates the designation to be a management target. There is provided a multi-protocol network management proxy server system characterized in that a network management command issued by specifying the node X received by the receiving means is subjected to address conversion.

Here, the multi-protocol network management proxy server systems of the first embodiment and the second embodiment are either on the same computer as the computer on which the network management server is operating, or on the computer. It can be made to operate on another computer device connected to the device.

In each of the first and second embodiments, the address translation table is stored in the network management server system, the multi-protocol network management proxy server system, and a server system different from these. It can be implemented in at least one of them.

Further, the present invention provides, as a third aspect, the first aspect.
An address management server system operating on a network in which the multi-protocol network management proxy server system according to the aspect is operated, wherein the address A
An allocation means for dynamically allocating an arbitrary address A1 to the node X to which the X is assigned, and the address A1 allocated to the node X and the physical identification information of the node X are transmitted to the network management server. Notification means for notifying the system, an address A1 assigned to the node X, an address A2 of the node X,
And an updating means for updating the address translation table by associating the physical identification information with the physical identification information in the address translation table, and providing the multi-protocol network address management server system.

Further, the present invention provides, as a fourth aspect, the second aspect.
An address management server system operating on a network in which the multi-protocol network management proxy server system according to the aspect of the present invention operates, wherein the multi-protocol network management proxy server system designates a target to be managed by the network management server system For the received node X, an arbitrary address A
Allocating means for dynamically allocating node X, notifying means for notifying the network management server system of the address A1 allocated to the node X, and physical identification information of the node X, and address allocated to the node X. A
1, an address A2 of the node X and physical identification information of the node X are stored in the address conversion table in association with each other, and updating means for updating the address conversion table is provided. A multi-protocol network address management server system is provided.

In any of the third mode and the fourth mode, the notifying means notifies the notification of the address A1 assigned to the node X by the physical identification information from the network management server system. This can be performed at the time of inquiring of the address A1 that specified the node X.

In any of the third and fourth embodiments, the allocating means stores the same address A1
It can be assigned to a plurality of nodes X redundantly.

Here, the multi-protocol network address management server systems of the third and fourth aspects are either on the same computer as the computer on which the network management proxy server system is running, or It can be operated on another computer device connected to the computer device.

In any of the third and fourth aspects, the address conversion table is stored in the network management server system, the multi-protocol network management proxy server system, the multi-protocol network address management server system,
And it can be implemented in at least one of the other server systems.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram illustrating a network management system according to an embodiment of the present invention.

As shown in FIG. 1, the network managed by the network management system according to the present embodiment includes a network management system for collecting network management information such as network configuration information, similarly to the network shown in FIG. In addition to the server system 110 and its management database (DB) 110a, there is an address management server system 120 for managing addresses on a network and providing a DNS (Domain Name System) and its management database (DB) 120a.

In FIG. 1, as in FIG. 2, it is assumed that the network management server system 110 and the address management server system 120 operate on independent computer devices, respectively. It is also conceivable that it is running on

In this embodiment, a network management proxy server system 130 for relaying the management of the end node 103 by the network management server system 110 and its management database (DB) 130a are further installed in the network. I have.

In FIG. 1, the network management proxy server system 130 includes the network management server system 110 and the address management server system 120.
Is running on a different computer device than the computer device on which each is running, but is the same as the computer device on which one or both of the network management server system 110 and the address management server system 120 are running. It is also conceivable that it runs on computer equipment.

FIGS. 4 to 6 show a network management server system 110 and an address management server system 12 respectively.
0 is a diagram showing a configuration of a computer device on which the network management proxy server system 130 operates.

Each computer device has the same hardware configuration as a general computer device.

That is, as shown in FIGS. 4 to 6, each of the computer devices includes at least a central processing unit (C).
PU) 1101, 1201, 1301 and portable disk devices 1109, 1209, 13 such as floppy disks
09 and the fixed disk device 110 corresponding to the management DB
a ', 120a', 130a ', disk controllers 1102, 1202, 1203 for controlling the portable disk devices 1109, 1209, 1309 and the fixed disk devices 110a', 120a ', 130a', and the main storage devices 1103, 1203. 1303, communication I / O interface controllers 1104, 1204, 1304 for performing communication between the network and peripheral devices;
Input devices 1107, 1207, such as a keyboard and a mouse,
1307 and input controllers 1105, 1205, and 13 that control the input devices 1107, 1207, and 1307.
05 and output devices 1108 and 120 such as displays
8, 1308 and output devices 1108, 1208, 130
Output controllers 1106, 1206,
1306.

The configuration and arrangement of programs for realizing the network management server system 110, address management server system 120, and network management proxy server system 130 running on each computer device will be described with reference to FIGS. This will be described with reference to FIG.

As shown in FIG. 4, in a computer device on which the network management server system 110 operates, a network management information DB 2100 and a program file 2101 ′ of the network management server program 2101 are stored in a fixed disk device 110a ′. At startup, the CPU 1101 reads the program file 2101 ′ into the main storage device 1103 and executes the network management server program 2101, whereby the network management server system 110 operates.

Network management server program 210
1 is a communication I / O interface controller 1104
A communication control module 21011 that controls communication with each computer device on the network via
A network management information collection module 21012 that collects network management information from each computer device on the network, stores the collected network management information in the network management information DB 2100, and searches and updates already stored network management information. Management information DB control module 21013 for controlling the network management information and a management console GUI control module 2101 for processing the network management information and the like to present the network management information to the network administrator
And 4.

These modules 21011 and 2101
2, 21013 and 21014 are equivalent in principle to the operation of the modules constituting the general network management server program, and as will be understood from the following description, the module configuration of the existing network management server program is greatly increased. The operation according to the present embodiment can be realized without any change.

As shown in FIG. 5, in the computer device on which the address management server 120 operates,
DNS information DB2200 for Pv4 and DNS for IPv6
Information DB 2201 and IPv4 address management information DB 2
202, an IPv6 address management information DB 2203,
The program file 2204 ′ of the address management server program 2204 is stored in the fixed disk device 120a ′, and at startup, the CPU 1201 reads the program file 2204 ′ into the main storage device 1203 and loads the address management server program 2204. By executing, the address management server system 120 operates.

Address management server program 2204
A communication control module 22041 for controlling communication with each computer device on the network via the communication I / O interface controller 1204;
An IPv4 address assignment control module 22042 for assigning an address (IPv4 address) based on the IPv4 protocol using HCP (Dynamic Host Configure Protocol) or the like, and an address (IPv6) based on the IPv6 protocol using Address Auto-configuration or the like.
IPv4 address allocation control module 22043 for allocating an IP address and a DNS for managing the association between the IPv4 address and the host name.
Control module 22044 and IPv providing DNS for managing the association between IPv6 address and host name
When a link between the 6DNS control module 22045 and the network management proxy server system 130 is required, the link control module 220 that provides a link function
46.

Here, DNS is a system for performing address-host name conversion in order to uniquely designate the end node 103 using a host name. In general, when an Internet connection is made, IPv4 DNS is used. In many cases, a DNS control module that provides DNS, such as the control module 22044 and the IPv6 DNS control module 22045, is installed. In some cases, the DNS control module operates as a single server system.

An address assignment control module using DHCP or the like, such as the IPv4 address assignment control module 22042, is often installed in order to effectively use a limited address, and the IPv6 address assignment control module 22043 is used. Address Auto-con, such as
The address assignment control module using figuration etc.
It is generally installed to prevent end users from performing complicated processing according to IPv6. The address allocation control module may operate as a single server system.

As described above, in this embodiment, the module of the address management server program 2204 can be used without largely changing the module configuration of the program in the server system such as the commonly used DHCP server system and DNS server system. A configuration can be realized.

As shown in FIG. 6, in the computer device on which the network management proxy server system 130 operates, the managed node information DB 2301
And the network management proxy server program 230
2 is stored in the fixed disk device 130a ′, and the CPU 1
The network management proxy server system 130 operates by the 301 reading the program file 2302 ′ into the main storage device 1303 and executing the network management proxy server program 2302.

The network management proxy server program 2302 controls the communication with each computer device on the network via the communication I / O interface controller 1304.
21 and the managed node information is stored in the managed node information DB.
A management target node information DB control module 23022 for performing control for searching for and updating management target node information stored in the storage node 2301 or for storing already stored management target node information;
(End node 10 belonging to IPv6 segment 104
IPv4-IPv6 which performs a mutual conversion process between an IPv4 address and an IPv6 address based on the contents of a managed node information DB 2301 and a network management proxy control module 23023 for relaying a network management command issued toward 3a). It comprises an address conversion control module 23024 and a managed node registration user interface control module 23025 that provides a graphical user interface for specifying a managed node.

The address conversion process performed by the IPv4-IPv6 address conversion control module 23024 is performed by the IPv4 DNS managed by the address management server system 120 in addition to the contents of the managed node information DB 2301 as described later. Information DB2200,
IPv6 DNS information DB 2201, IPv4 address management information DB 2202, IPv6 address management information DB
This is realized by referring to the contents of 2203.

Hereinafter, the operation according to the present embodiment will be described.

In this embodiment, first, the end node 103a belonging to the IPv6 segment 104 is
In order to be a managed node of the network management server system 110 supporting v4, the network administrator specifies to the network management proxy server system 130 that the end node 103a is to be a managed node. The managed node information about the end node 103a is stored in the managed node information DB 230.
Register to 1.

FIG. 7 is an explanatory diagram showing the flow of operation when the end node 103a is registered in the managed node information DB 2301.

The registration of the end node 103a in the managed node information DB 2301 is performed by the managed node registration process 3 performed by the network management proxy server system 130.
The process 300 is started by an instruction of the network administrator.

As shown in FIG. 7, in the managed node registration process 300, first, the network management proxy server system 130 lists the end nodes 103a belonging to the IPv6 segment 104 (the end nodes 103a to which the IPv6 addresses are assigned). Address management server system 1 in order to present the
20 requesting a list of the end nodes 103a to which the IPv6 addresses are assigned (step 30).
1).

As a result, the address management server system 120 creates a list of the end nodes 103a to which the IPv6 address has been assigned and sends it to the network management proxy server system 130 (step 302).
30 presents the list sent from the address management server system 120 to the network administrator.

The address management server system 120
When assigning an IPv6 address to the end node 103a, a corresponding host name is also assigned. The assigned IPv6 address is stored in the IPv6 address management information DB 2203, and the IPv6 address is assigned.
IPv6 DN by associating addresses and host names
The information is registered in the S information DB 2201. Therefore, the address management server system 120 executes step 3
02, a list composed of all IPv6 addresses registered in the IPv6 address management information DB 2203 or a list composed of all IPv6 addresses and host names registered in the IPv6 DNS information DB 2201 is created. It is sent to the network management proxy server system 130.

When the network administrator specifies the end node 103a to be the managed node (step 303), the specified end node 103a is already registered in the managed node information DB 2301. It is determined whether or not registration has been completed (step 304). If registration has been completed, the following steps are skipped.

On the other hand, when the end node 103a specified by the network administrator is not registered in the managed node information DB 2301 (step 304), the network management proxy server system 130 allocates the end node 103a to the specified end node 103a. An IPv4 address is obtained (step 305).

In step 305, the network management proxy server system 130 obtains the IPv4 address by requesting the address management server system 120 to assign the IPv4 address to the designated end node 103a. I do.

At this time, the address management server system 120 that has received the request makes the specified end node 103a
(Step 306), and assigns the assigned IPv4 address to the IPv4 address.
Registered in the address management information DB 2202 and associated the assigned IPv4 address and host name,
It is registered in the DNS information DB 2200 for IPv4 (step 307). Then, the address management server system 120 stores the set of the registered IPv4 address and host name in the network management proxy server system 130.
(Step 308).

As described above, instead of the end node 103a itself, the network management proxy server system 13
Since a new IPv4 address is obtained on the 0 side, the end node 103a does not necessarily need to support the IPv4 protocol.

In this embodiment, the address management server system 120 sends one IPv4 address to the end node 103a for which the network management proxy server system 130 has requested the assignment of an IPv4 address.
Addresses are allowed to be assigned to a plurality of end nodes 103a redundantly. In the present embodiment, the network management system 110 and the network management proxy server system 130 specify the end node 103a by physical identification information, which allows the assignment of a duplicate IPv4 address. An IPv4 address with few resources can be used effectively.

Subsequently, the network management proxy server system 130 associates the identification information and the IPv6 address of the end node 103a with the obtained IPv4 address and the host name, and stores them in the managed node information DB 2301 as managed node information. By registering, the end node 103a is set as a managed node (step 309).

For example, as the identification information of the end node 103a, a MAC (Media Access Control) address which is a physical address unique to a network port can be used, and the network management proxy server system 130 sends the IPv6 address of the end node 103a. , The MAC address can be obtained by directly inquiring of the end node 103a.

The IPv4 address and the MAC address obtained by the network management proxy server system 130 in this process 300 are notified from the network management proxy server system 130 to the network management server system 110, and the network management server system 110 The end node 103a belonging to the node 104 can be a managed node.

For example, conventionally, when displaying network configuration information in the network management server system 110, as shown in FIG. 3A, end nodes 103b and 103 belonging to the IPv4 segment 105 are displayed.
c can be displayed, but according to the present embodiment, FIG.
As shown in (b), the end node 103a belonging to the IPv6 segment 104 can also be displayed.

In FIG. 3, 111 indicates an icon indicating the router 101, 113a to 113c indicate icons indicating the end nodes 103a to 103c, 116 indicates an icon indicating an external network including the Internet 106, and 117a to 117c indicate respective SWs. 3 illustrates a partial network (segment) separated by the / HUB 102.

FIG. 8 is an explanatory diagram showing the flow of operation when the network management server system 110 issues a network management command to a managed node.

The issuance of the network management command is realized by a network management process 400 performed by the network management server system 110, and the process 400 is started by an instruction of a network administrator.

As shown in FIG. 8, in the network management processing 400, first, the network management server system 1
When the network administrator specifies the managed node 103, the IPv10 of the specified managed node 103
4 address (step 401), and the searched IP
A network management command using the v4 address is created and issued (step 402).

At this time, the designated managed node 10
3 is the end node 103a belonging to the IPv6 segment 104, the IPv4 address and MA
Since the set of C addresses is searched, the network management server system 110 sends the searched MAC together with the network management command using the searched IPv4 address.
By transmitting the address to the network management proxy server system 130, the end node 103a to which the network management command is issued is specified.

That is, in the present embodiment, the network management server system 110
A change may be made to the existing network management server program so that the MAC address can be used to specify 3a.

Then, the network management proxy server system 130 specifies the end node 103a and receives the network management command transmitted from the network management server system 110 (step 40).
3) It is determined whether or not the end node 103a to which the received network management command is issued has been registered as a managed node in the managed node information DB 2301 (step 404). , An error is returned to the network management server system 110.

As described above, in this embodiment, one IPv4 address is assigned to a plurality of end nodes 103a, but the end node 103a is specified by the MAC address. Proxy server system 130
Indicates a managed node whose set of a MAC address and an IPv4 address match, in a managed node information DB 2301.
Search inside.

If the end node 103a to which the received network management command is issued has already been registered as a managed node in the managed node information DB 2301 (step 404), the network management proxy server system 130 sets Based on the contents of the management target node information DB 2301, the IPv4 address of the end node 103a to which the received network management command is issued is assigned to the end node 10
3a (step 405).
Converts the received network management command to the converted IP
As a network management command using a v6 address, the end node 103a in an IPv6 packet format.
(Step 406).

As a result, the network management command transferred from the network management proxy server system 130 is transmitted to the end node 103a which is the managed node.
Is processed as usual by the SNMP agent or the like (steps 407 to 409), and the end node 103a
Is sent back to the network management proxy server system 130.

When the network management proxy server system 130 receives the reply packet from the end node 103a (step 410), the network management proxy server system 130 responds to the received reply packet based on the contents of the managed node information DB 2301 as an end source of the reply packet. Node 103a
To the IPv6 address of the end node 103a.
It is converted to a v4 address (step 411), and the received reply packet is transferred to the network management server system 110 in the form of an IPv4 packet as a reply packet using the converted IPv4 address (step 4).
12).

It should be noted that, instead of using an IPv4 address as the destination of the network management command,
A host name corresponding to the v4 address may be used. In this case, host name conversion may be performed instead of address conversion.

FIG. 9 shows a managed node information DB.
An example of a data table stored in 2301 will be described.

As shown in FIG. 9, the managed node information D
The MAC address 501 and the host name 5 are stored in B2301.
02, an IPv6 address 503, and an IPv4 address are stored in a data table in which managed node information about one managed node is set.

According to this data table, the address conversion of the end node 103a specified by the MAC address can be mutually performed, and can be linked with the name resolution by DNS.

As described above, according to the present embodiment, the network management server system 110 that supports only IPv4 is changed very little, and a general address management service and D
By operating the network management proxy server system 130 on the network without losing consistency with the NS, the end node 103a belonging to the IPv6 segment 104 can be managed by the conventional network management server system 110. It becomes possible.

In this embodiment, the end node 10
3a belongs to the IPv6 segment 104 and the end nodes 103b and 103c belong to the IPv4 segment 105, but one end node 103
Pv6 segment 104 and IPv4 segment 10
5 in which case, the network management server system 110 sends the IPv6 address and the IPv6
It is managed by two kinds of management methods of four addresses.

In the present embodiment, the network management server system 110 specifies only the end node 103a belonging to the IPv6 segment 104 by the MAC address, but also includes the end nodes 103b and 103c belonging to the IPv4 segment 105. All the end nodes 103 may be managed using the MAC address.

In such a case, the network management server system 110 sends the
When the network management command is issued (specifically, step 401 in the network management processing 400), the network management command to be issued to the network management proxy server system 130 is not required. The end node 103 to which the end node 103 is issued may be specified by the MAC address of the end node 103, and the IPv4 address of the end node 103 may be inquired.

Further, if the session between the network management server system 110 and the network management proxy server system 130 is not to be disconnected from the time of inquiry of the IPv4 address to the time of transmission of the network management command, the network management proxy server system 130 However, the network management server system 110 does not need to transmit the MAC address when transmitting the network management command because the MAC address received at the time of querying the IPv4 address can be held.

In the present embodiment, the IP of a small resource is used.
One purpose is to use the v4 address effectively.
A Pv4 address is allowed to be assigned to a plurality of end nodes 103a in an overlapping manner, and the end node 103a is specified by a MAC address. In general, however, a network in which two types of communication protocols P1 and P2 are mixed. When the above nodes are collectively managed by a network management server system that supports only one communication protocol (for example, communication protocol P1), communication is performed to an end node to which an address A2 based on the communication protocol P2 is assigned. An address A1 based on the protocol P1 is assigned, and the assigned address A1 is
In addition to notifying the network management server system, the address A1 assigned to the end node and the address A2 of the end node are stored in association with each other, and a network management command (using the address A1 issued from the network management server system) is used. If the received network management command is once received, and the received network management command is converted into a network management command using the address A2 and then transferred, it is not always necessary to specify the end node by the MAC address. .

Further, in the present embodiment, a network in which two types of communication protocols (IPv4, IPv6) are mixed is taken as an example, but in a network in which three or more types of communication protocols are mixed, any one type of communication is used. In order to manage a network adopting another communication protocol with a network management server system supporting only the protocol, a network management proxy server 130 may be provided for each of the other communication protocols. The management proxy server 130 can be operated on one computer device.

[0089]

As described above, according to the present invention,
In a network in which a plurality of types of communication protocols are mixed, a network management server system that supports only one type of communication protocol can manage a network that employs another type of communication protocol. Can be kept extremely small.

Therefore, for example, in a network in which IPv4 and IPv6 coexist, if a network management server system supporting only IPv4 is used, management of a network adopting IPv6 can be realized at extremely low cost. effective.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a system configuration of a network management system according to an embodiment.

FIG. 2 is an explanatory diagram showing an example of a network in which two types of communication protocols are mixed.

FIG. 3 is an explanatory diagram showing a display example of network configuration information in the conventional network management server system and the network management server system in the embodiment.

FIG. 4 is an explanatory diagram showing a software configuration of a network management server system according to the embodiment and a hardware configuration of a computer device on which the network management server system according to the embodiment operates.

FIG. 5 is an explanatory diagram illustrating a software configuration of an address management server system according to the embodiment and a hardware configuration of a computer device on which the address management server system according to the embodiment operates.

FIG. 6 is an explanatory diagram showing a software configuration of a network management proxy server system according to the embodiment and a hardware configuration of a computer device on which the network management proxy server system according to the embodiment operates.

FIG. 7 is an explanatory diagram showing a flow of a managed node registration process performed by the network management proxy server system in the embodiment.

FIG. 8 is an explanatory diagram showing a flow of a network management process performed by the network management server system according to the embodiment.

FIG. 9 is an explanatory diagram showing an example of a data table stored in a managed node information database according to the embodiment.

[Explanation of symbols]

101: router, 102: switch device / hub device, 1
03 ... end node, 104 ... IPv6 segment, 1
05: IPv4 segment, 106: Internet,
110 ... Network management server system, 110a ...
Management database for network management server system,
120: address management server system, 120a: management database for address management server system, 130:
Network management proxy server system, 130a ...
Network management proxy server system management database, 110a ': fixed disk device, 1101: central processing unit, 1102: disk controller, 1
103: main storage device, 1104: communication I / O interface controller, 1105: input controller, 11
06 output controller, 1107 input device, 110
8 output device, 1109 portable disk device, 210
0: Network management information database, 2101: Network management server program, 2101 ′: Program file of network management server program, 2
1011 Communication control module 21012 Network management information collection module 21013 Network management information database control module 21014
Management console graphical user interface control module, 120a '... fixed disk unit, 1201
... Central processing unit, 1202 ... Disk controller, 1203 ... Main storage device, 1204 ... Communication I / O interface controller, 1205 ... Input controller, 1206 ... Output controller, 1207 ... Input device, 1208 ... Output device, 1209 ... Portable type Disk device, 2200 ... Name service information database for IPv4, 2201 ... Name service information database for IPv6, 2202 ... IPv4 address management information database, 2203 ... IPv6 address management information database, 2204 ... Address management server program, 220
4 ′: Program file of the address management server program, 22041: Communication control module, 22042:
IPv4 address allocation control module, 22043 ... I
Pv6 address allocation control module, 22044 ... IP
v4-DNS control module, 22045 ... IPv6-
DNS control module, 22046: linked control module, 130a ': fixed disk device, 1301: central processing unit, 1203: disk controller, 130
3 main memory device, 1304 communication I / O interface controller, 1305 input controller, 1306
... Output controller, 1307 ... Input device, 1308 ...
Output device, 1309: Portable disk device, 2301 ...
Managed node information database 2302 Network management proxy server program 2302 ′ Network management proxy server program file 23021 Communication control module 23022
… Managed node database control module 230
23: Network management proxy control module, 23
024: IPv4-IPv6 address conversion control module, 23025: user interface control module for registering managed nodes.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04L 29/06 (72) Inventor Satoshi Miyazaki 1099 Ozenji Temple, Aso-ku, Aso-ku, Kawasaki City, Kanagawa Prefecture Hitachi, Ltd. System Development Co., Ltd. In the laboratory (72) Inventor Yoshiyuki Kurosaki 5030 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term in the Software Division, Hitachi, Ltd.F-term (reference) JT03 MA01 MD07 5K033 BA08 CB02 DA05 DB14 DB19 DB20 EC03 5K034 AA10 HH01 HH02 HH06 JJ24 (54) [Title of Invention] Multi-protocol network management method, multi-protocol network management proxy server system, multi-protocol address management server system, and multi-protocol management server Multi-protocol network management system

Claims (18)

[Claims] 1. A network management server system that manages nodes on a network by issuing a network management command using an address A1 based on the communication protocol P1 in which two types of communication protocols P1 and P2 are mixed. In the network, at least one server system operating on the network is configured to provide an arbitrary address to a node (hereinafter, referred to as “node X”) to which an address A2 based on the communication protocol P2 is assigned. The address A1 is dynamically allocated, the address A1 allocated to the node X is notified to the network management server system, and the address A1 allocated to the node X is stored in association with the address A2 of the node X. Issued from the above network management server system It was,
Temporarily receiving a network management command using the address A1 of the node X, converting the received network management command into a network management command using the address A2 of the node X, and transferring the command to the node X; Characteristic multi-protocol network management method. 2. A network management server system that manages nodes on a network by issuing a network management command using an address A1 based on the communication protocol P1 in which two types of communication protocols P1 and P2 coexist. In the network, at least one server system operating on the network is configured to provide an arbitrary address to a node (hereinafter, referred to as “node X”) to which an address A2 based on the communication protocol P2 is assigned. The address A1 is dynamically allocated, the address A1 allocated to the node X and the physical identification information of the node X are notified to the network management server system, and the address A1 allocated to the node X and the node X address A2 and the physical identification of the node X And receives the network management command using the address A1 of the node X issued from the network management server system by specifying the node X. The network management command is converted to a network management command using the address A2 of the node X and then transferred to the node X. The network management server system uses the node X's physical identification information to
A multi-protocol network management method characterized by specifying 3. The multi-protocol network management method according to claim 2, wherein the notification of the address A1 allocated to the node X to the network management server system includes the step of notifying the node X from the network management server system. A multi-protocol network management method, which is performed when an inquiry is made for a specified address A1. 4. The multi-protocol network management method according to claim 2, wherein the physical identification information of the node is a physical address unique to a network port. 5. The multi-protocol network management method according to claim 2, wherein the same address A1 is assigned to a plurality of nodes X in an overlapping manner. 6. The multi-protocol network management method according to claim 1, wherein when assigning an address A1 to said node X, a host name is assigned in association with said node A. Alternatively, a multi-protocol network management method using the corresponding host name. 7. A network management server system for managing nodes on a network by issuing a network management command using an address A1 based on the communication protocol P1 in which two types of communication protocols P1 and P2 are mixed. In a proxy server system operating on the network, a node (hereinafter, referred to as “node X”) to which an address A2 based on the communication protocol P2 is assigned is dynamically assigned. An assigned address A1 based on the communication protocol P1, an address A2 of the node X,
A reference unit for referring to an address conversion table stored in association with the physical identification information of the node X; and a node management unit that specifies the node X based on the physical identification information and is issued from the network management server system. The network management command using the address A1 of the node X is received once, and the received network management command is converted into a network management command using the address A2 of the node X based on the reference result of the address conversion table by the reference means. A multi-protocol network management proxy server system, comprising: conversion means for converting the command into a command and transferring the command to the node X. 8. The multi-protocol network management proxy server according to claim 7, wherein the physical identification information of the node is a physical address unique to a network port. system. 9. The multi-protocol network management proxy server system according to claim 7, wherein the network management server system is connected to or connected to the same computer as the computer on which the network management server is running. A multi-protocol network management proxy server system running on another computer device. 10. The multi-protocol network management proxy server system according to claim 7, 8 or 9, wherein a designation is made that the node X to which the address A2 is assigned is to be managed by the network management server system. Receiving means for receiving a network management command issued by specifying the node X which has received the designation to be managed by the receiving means. Multi-protocol network management proxy server system. 11. The multi-protocol network management proxy server system according to claim 7, 8, 9 or 10, wherein said address translation table is: said network management server system, said multi-protocol network management proxy server system, and A multi-protocol network management proxy server system implemented in at least one of the other server systems. 12. An address management server system operating on a network on which the multi-protocol network management proxy server system according to claim 7, 8 or 9 operates, wherein the node X to which the address A2 is assigned is provided. for,
Assigning means for dynamically assigning an arbitrary address A1; notifying means for notifying the address A1 assigned to the node X and physical identification information of the node X to the network management server system; Update means for storing the assigned address A1, the address A2 of the node X, and the physical identification information of the node X in the address translation table in association with each other, and updating the address translation table. A multi-protocol network address management server system, characterized in that: 13. An address management server system operating on a network on which the multi-protocol network management proxy server system according to claim 10 is operating, wherein the designation to be managed by the network management server system is performed. Assigning means for dynamically assigning an arbitrary address A1 to the node X received by the multi-protocol network management proxy server system; and address A1 assigned to the node X and physical identification information of the node X, Notifying means for notifying the network management server system, the address A1 assigned to the node X, the address A2 of the node X, and the physical identification information of the node X are stored in the address conversion table in association with each other. And update the above address conversion table. Multiprotocol network address management server system characterized by comprising updating means for. 14. The multi-protocol network address management server system according to claim 12, wherein said notifying means sends a notification of the address A1 allocated to said node X to said physical address from said network management server system. A multi-protocol network address management server system for performing an inquiry on an address A1 that specifies the node X by means of dynamic identification information. 15. The multi-protocol network address management server system according to claim 12, 13 or 14, wherein said assigning means assigns the same address A1 to a plurality of nodes X in an overlapping manner. Protocol network address management server system. 16. The multi-protocol network address management server system according to claim 12, 13, 14 or 15, wherein the network management proxy server system is on the same computer as the computer on which the network management proxy server system is operating or the computer. A multi-protocol network address management server system that operates on another computer device connected to the device. 17. The method according to claim 12, 13, 14, 15, or 1.
7. The multi-protocol network address management server system according to 6, wherein the address conversion table is different from the network management server system, the multi-protocol network management proxy server system, the multi-protocol network address management server system, and A multi-protocol network address management server system, which is implemented in at least one of the server systems. 18. A network management command using an address A1 based on the communication protocol P1 is issued on a network in which two types of communication protocols P1 and P2 coexist to manage nodes on the network. A network management server system that identifies the node X by physical identification information of a node (hereinafter, referred to as “node X”) to which an address A2 based on the communication protocol P2 is assigned; , An arbitrary address A1 is dynamically assigned, and the address A assigned to the node X is assigned.
1, a multi-protocol network address management server system for notifying the network management server system of the physical identification information of the node X; an address A1 assigned to the node X by the address management server system; Address A2
And the physical identification information of the node X are stored in association with each other, and a network management command using the address A1 of the node X issued from the network management server system by specifying the node X And a multi-protocol network management proxy server system that converts the received network management command into a network management command using the address A2 of the node X, and then transfers the network management command to the node X. A multi-protocol network management system characterized by the following.