JPH05344156A - Packet exchange - Google Patents

Abstract

PURPOSE:To change configuration information by originating a call with a special number from a normal packet terminal connected to the packet exchange. CONSTITUTION:In the case of newly connecting the packet terminal to a packet exchange 1, the call is originated with the special number as an incoming DTE address, and a call originating request packet is sent out. This packet is sent through a packet terminal I/F part 16 to an X25 protocol processing part 15. In this case, the connecting port of the packet terminal is identified, and a connecting request is sent to a call control part 14. At the control part, when the incoming DTE address of this connecting request is the special number, the configuration information change sequence of the packet terminal is activated and in the other case, the normal connection sequence is activated. At the time of the change sequence, the control part 14 recovers the packet terminal by sending a change request to an information detection part 12 and the processing part 15. According to this change request, the detection part 12 extracts various information such as address information and changes the terminal configuration in a terminal information storage part 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packet switch for accommodating packet terminals for switching / connection, and more particularly to a system for registering the configuration of the packet terminals accommodated therein.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram for explaining an example of a conventional packet switch, in which 1 is a packet switch, 2 is a maintenance terminal, and 3 _{1 to} 3 _n are packet terminals. 1 is a terminal information storage unit 13 and a call control unit 1
4, X.25 protocol processing units 15 ₁ to 15 _n , packet terminal I / F units 16 _{1 to} 16 _n , and the like. As is well known, packet terminals 3 _{1 to} 3 _n are connected to the packet switch 1, and communication by packet switching is performed between packet terminals via the packet switch 1, but when performing switching / connection, In order to specify the packet terminals 3 _{1 to} 3 _n to be connected, the addresses of all the packet terminals 3 _{1 to} 3 _n accommodated in the packet switch 1 are required. Further, in order to check whether or not the packet terminal of the connection destination can be connected, the configuration such as the maximum window size, the packet length, the throughput class that can be processed by each of the packet terminals 3 _{1 to} 3 _n accommodated in the packet switch 1 is configured. You also need the registration information. With regard to the configuration information of the packet terminals 3 _{1 to} 3 _n , conventionally, the system administrator rewrites the configuration table of the terminal information storage unit 13 via the maintenance terminal I / F unit 11 using the dedicated maintenance terminal 2. Has been done by

[0003]

As described above, in the conventional packet switch, when the user tries to add a new packet terminal, the configuration of the packet terminal registered in the configuration table of the packet switch is changed. When changing the information, special knowledge about the format and setting method of the configuration table is required. Further, in order to rewrite the configuration table, it is necessary to prepare a dedicated maintenance terminal, and there is a problem that it is not easy to add a packet terminal.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a storage means for storing configuration information of a packet terminal in a packet switch, and a port to which a packet sent to the packet switch is stored. Port identification means for identifying whether the packet is from a packet terminal connected to the packet terminal and a predetermined identifier for requesting registration of the configuration information of the terminal from the packet sent from the packet terminal. Request identification means for identifying a call request packet, packet analysis means for extracting the configuration information of the packet terminal from the call request packet, and configuration information registered in the storage means based on the configuration information And table setting means for performing the setting.

[0005]

The packet switch has a configuration table as a storage means for storing the configuration information of the packet terminal to be accommodated, and when a packet is sent from the packet terminal, the source packet terminal is connected by the port identification means. Identify which port is present. Also,
When the request identifying means identifies in the configuration table of the packet switch that the call request packet is a request for changing the configuration information of the packet terminal, the packet analyzing means identifies the packet terminal address, window size, and packet length. , Retrieves packet terminal configuration information such as throughput class. Based on this information and the information from the port identification means, the configuration table setting means rewrites the configuration table in the storage means.

[0006]

1 is a block diagram of a packet switch according to the present invention. In the figure, 12 is an information detecting section, and FIG.
The same reference numerals as those in the case of FIG. 3 are attached to the portions having the same operations as those of the conventional technique shown in FIG. 3, but the packet terminal is 3 and the packet terminal I
16 for the / F section and 15 for the X.25 protocol processing section
Is represented on behalf of. FIG. 2 is a flowchart showing the procedure for changing the configuration information of the packet terminal in the packet switch of the present invention, and the operation of the present invention will be described below with reference to FIGS. 1 and 2.

First, in the present invention, when the user who uses the packet newly connects the packet terminal to the packet switch 1, the destination D
By making a call using a special number as the TE address, the configuration information of the newly connected packet terminal can be set in the configuration table (terminal information storage unit 13) of the packet switch. This special number is arbitrary as long as it is a special identifier predetermined in the packet switch, for example,
In the packet switch of the present invention, the number 000 is called a special number.

When the user makes a call using the above-mentioned special number,
The packet terminal sends a call request packet in which a special number is set to the destination DTE address to the packet switch. The call request packet is transmitted via the packet terminal I / F unit 16 to X.2.
5 is sent to the protocol processing unit 15. The X.25 protocol processing unit 15 identifies the connected port of the packet terminal from the identification number of the packet terminal I / F unit 16 that has been sent (step 21), and receives the packet receiving port information, the destination DTE address information, The call control unit 1 sends a connection request including DTE address information, facility information, and user data.
It sends to 4. The identification of the port may be performed by the packet terminal I / F unit 16 or the call control unit 14. The call control unit 14 receives the incoming connection request DT of the connection request.
Whether the E address is a special number is compared (step 22), and if it is a special number, the procedure for changing the configuration information of the packet terminal is started, and otherwise, the normal connection procedure for packet switching (step 24) is started. The call control unit 14 that has entered the configuration information change procedure of the packet terminal
Is packet receiving port information, originating DTE address information,
A configuration change request including facility information is sent to the information detector 12 and a disconnection request is sent to the X.25 protocol processor 15 to restore the packet terminal (step 23). When the configuration change request is sent, the information detector 12 extracts the address information from the source DTE address as the DTE address of the packet terminal connected to the packet receiving port. Similarly, the window size negotiation information, the packet size negotiation information, and the throughput class negotiation information are extracted from the facility information as the maximum window size, the maximum packet size, and the default throughput class (step 25), and the terminal of the configuration table of the terminal information storage unit 13 is extracted. Change the configuration (step 26).

[0009]

As described above, according to the present invention, the configuration information of the terminal necessary for the packet switch to perform the switching / connection can be obtained from the normal packet terminal connected to the packet switch with the special number. It is possible to make a change by making a call by using, and a new packet terminal can be connected to the packet switch without using a special maintenance terminal as in the conventional case.

[Brief description of drawings]

FIG. 1 is a block diagram of a packet switch according to an embodiment of the present invention.

FIG. 2 is a flowchart of a procedure for changing a terminal configuration according to the present invention.

FIG. 3 is a block diagram of a conventional packet switch.

[Explanation of symbols]

1 ... packet switch, 2 ... maintenance terminal, 3 ₁ to 3 _n ... packet terminal, the interface unit between 11 ... maintenance terminal, 12
... terminal configuration detection unit, 13 ... terminal information storage unit, 14 ... call control unit, 15 ₁ to 15 _n ... X.25 protocol processing unit, 16 _{1 to} 16 _n ... packet terminal interface unit.

Claims (1)

[Claims] 1. A packet switch capable of packet switching by connecting packet terminals having a plurality of attributes, and storing means for storing configuration information of the packet terminal and which port the packet sent to the packet switch is. Port identification means for identifying whether the packet is from a packet terminal connected to the packet terminal and a predetermined identifier for requesting registration of the configuration information of the terminal from the packet sent from the packet terminal. Request identifying means for identifying a call request packet, packet analyzing means for extracting configuration information of the packet terminal from the call request packet,
A packet switch having a table setting unit that registers the configuration information in the storage unit based on the configuration information.