JP3513837B2 - ATMPVC network line setting system and method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention searches for a route between ATM terminals connected to an ATMPVC network under desired conditions such as time of use and bandwidth, and reserves resources such as VPI value, VCI value and bandwidth. The present invention relates to a network line reservation method and its system, in which an ATM switch is controlled by controlling an ATM switch at a use time without creating switch control information.
An AT that makes it possible to use the PVC line between the originating ATM terminal and the final ATM terminal by setting the PVC between the M terminals
The present invention relates to an MPVC line quantity automatic line setting system and setting method.

[0002]

2. Description of the Related Art ATM PVC (Asynchronou
s Transfer Mode Permanent
In the Virtual Circuit network, A
It is necessary to control the TM switch and set the line. In the conventional line setting system in the ATM PVC network, the line setting can be performed from a remote place by sending the switch control information to the switch control program operating on the switch control terminal connected to the switch. In addition, SW
The control program is described in, for example, Masataka Ota, "Switch Setting Protocol," 5th JAIN Consortium General Assembly, Study Group Material (Jun. 1995). FIG. 22 is an overall configuration diagram of a conventional ATM PVC network line setting system. In FIG. 22, two ATMs
Terminals T11, T12 and six ATM switches SW1 to S
W16 is interconnected via optical fibers L11 to L19. In addition, P12-1 to P1 in the ATM switch
6-6 are port numbers of the switches 12 to 16, respectively. The port number of the ATM switch at the end of the optical fiber connected to the ATM switch is
The port number of the ATM switch to which the optical fibers L11 to L19 are connected is shown. Also, ATM switch SW1
1 to SW16 include SW control terminals CTL11 to CTL1.
6 is connected by RS232C or Ethernet. Furthermore, one ATM PVC network line setting device 20
000 and SW control terminals CTL11 to CTL16 are connected to an existing communication network such as the Internet. The SW control terminals CTL11 to CTL16 own the network addresses ctl11 to ctl16. And A
Needless to say, the configurations of the TM terminal, ATM switch, and SW control terminal are not limited to those shown in FIG.

FIG. 23 is a block diagram of an ATM PVC network line setting device in a conventional ATM PVC network line setting system. The ATM PVC network line setting device 20000 includes an input unit 2110 for controlling input from a keyboard or a mouse.
0, an output unit 2120 for controlling output to a display or the like
0, SW control information transmitter 2 for transmitting switch control information
9000, a network interface unit 21300 that sends SW control information to the communication network, and an input unit 21100, an output unit 21200, a SW control information transmission unit 29000, and a network interface unit 2130 of these.
The control unit 21000 controls 0. The SW control information transmission unit 29000 includes a SW control information storage unit 29100 that stores the SW control information 29110.
The SW control information 29110 includes a SW control terminal address column 29111, a line holding time column 19112, a line bandwidth column 19113, an ATM cell input port number column 29114, and an ATM cell input VPI (Vir).
tual pass identification (ID) value field 29115, input VCI (Virtual Circuit Id) of the input ATM cell
(entification) value column 19116, an ATM cell output port number column 29117, an ATM cell output VPI value column 29118, and an ATM cell output VCI value column 29119.

FIG. 24 is a flow chart of a line setting process in the conventional ATM PVC network line setting system. The columns of the input unit, control unit, SW control information transmission unit, and SW control terminal in FIG.
In the ATM PVC network line setting device 20000, the input unit 21100, the control unit 21000, the SW control information transmitting unit 29000, and the SW control terminals CTL11 to CTL16.
Is represented. First, when the line setting process is started (S1
000), SW control information 2911 from the input unit 21100
0 SW control terminal address column 29111, line hold time column 29112, line bandwidth column 29113, input port number column 29114 for inputting ATM cells, input VPI value column 29115 for ATM cells to be input, A input
Input VCI value column 29116 of TM cell, output port number column 29117 of outputting ATM cell, AT output
Output VPI value column 29118 of M cell, ATM to be output
In the cell output VCI value column 29119, the SW control terminal address, the line holding time, the line band, the input port number for inputting the ATM cell, and the input VPI for the input ATM cell.
Value, input VCI value of input ATM cell, output port number of output ATM cell, output V of output ATM cell
The SW control information 29110 including the PI value and the output VCI value of the output ATM cell is input, and the input SW control information 29110 is stored in the SW control information storage unit 29100 (S1010). Next, the input unit 21100 requests the control unit 21000 to transmit the SW control information 29110 (S1020). The control unit 21000 that receives the SW control information transmission request receives the SW control information transmission unit 2900.
0 is requested to transmit the SW control information 29110 (S1030). Upon receiving the SW control information transmission request, the SW control information transmission unit 29000 transmits the SW control information 29110 to the SW control terminal having the SW control terminal address (S1).
040). Upon receiving the SW control information, the SW control terminal sends S
The line is set according to the W control information, and the line is held for the line holding time (S1050). With this, the line setting process is completed (S1060).

[0005]

As described above, the conventional ATM PVC network line setting device inputs the SW control information each time the PVC line user uses the PVC line,
It was necessary to create and transmit the SW control information from the ATM PVC network line setting device to the SW control terminal connected to the ATM switch. Therefore, in the conventional ATM PVC network line setting system, an arbitrary ATM terminal (source ATM)
In order to use a PVC line for data transmission from a terminal) to another ATM terminal (final ATM terminal), there are the following necessary conditions. [Requirement 1] Originating ATM terminal / End ATM
It was necessary to find the route between the terminals. [Requirement 2] Resources (VPI value, V) that can be used in each link on the route between the originating ATM terminal / the final ATM terminal
The range of CI value, bandwidth) is the AT connected to both ends of the link.
Since it depends on the port of the M switch, it is necessary to find the range of the available resource. [Requirement 3] Desired resources (VPI value, VC) in all links on the route between the originating ATM terminal / the final ATM terminal
It was necessary to select a route in which the I value and band) can be used. [Requirement 4] Create SW control information to be transmitted to all SW control terminals on the route between the originating ATM terminal / the final ATM terminal,
It was necessary to transmit the SW control information from the ATM PVC network line setting device to all the SW control terminals on the route. In order to satisfy the above requirements 1 to 4, there are the following problems, and it has been a problem to solve them. [Problem 1] Under the above requirement 1, when the ATMMPVC network becomes complicated in structure, the AT
There is a problem that it is difficult to find the route between the M terminals. [Problem 2] In the above requirement 2, the resources in the link (available VPI value, VCI value, bandwidth) are available resources (VPI value, VCI value, bandwidth) of the ports of the switches connected to both ends of the link. There is a problem that it becomes difficult to obtain available resources in the link when the ATMMPVC network has a complicated network configuration. [Problem 3] In the above requirement 3, among all routes between ATM terminals, a route in which a desired resource (VPI value, VCI value, band) can be used between the use start time and the use end time is selected. However, there is a problem that resources (VPI value, VCI value, band) cannot be reserved between a desired start time of use and a desired end time of use. [Problem 4] In the above requirement 4, resources (VPI value, VC) between the desired use start time and the desired end time are used.
Since the I value and the bandwidth) cannot be reserved, there is a problem that the SW control information of all SW control terminals on the route must be created according to the situation of the use start time. Therefore, the object of the present invention is to solve these conventional problems,
In order to find the route of the originating ATM terminal / ending ATM terminal in which the band can be used from the use start time to the use end time, the originating ATM terminal / without the SW control information for controlling the ATM switch on the route is created. An object of the present invention is to provide an ATM PVC network line setting system and method in which a PVC line between terminal ATM terminals can be used.

[0006]

In order to achieve the above object, in the ATM PVC network line setting system of the present invention,
TM terminal information management unit (14000 in FIG. 1), SW adjacent information management unit (16000), and SW information management unit (1500)
0), a link information management unit (17000), a reservation information management unit (12000), a route search unit (13000), a switching information management unit (18000), and a SW control reservation information management unit (19000). This allows any ATM terminal (originating ATM terminal) desired by the user to
In order to send data to the TM terminal (final ATM terminal),
An AT that sends data instead of the user creating the SW control information and sending it from the ATM PVC network line setting device to the SW control terminal connected to the ATM switch at the use start time
M terminal name, end ATM terminal name for receiving data, use start time for starting use, use end time for ending use, and bandwidth required for data transmission / reception as reservation information in the reservation information storage unit of the ATM PVC network line automatic reservation setting device. By inputting, the ATM PVC network line automatic reservation device can use the bandwidth from the start time of use to the end time of use.
A route between the terminal / the terminal ATM terminal is obtained, SW control information for controlling the ATM switch on the route is created, and the SW control information is transmitted to the SW control terminal at the use start time to send the ATM terminal /
Since the PVC line between the end ATM terminals is automatically set, the user obtains a path between the originating ATM terminal / the end ATM terminal in which the band can be used between the use start time and the use end time, and the ATM switch on the path is set. There is no need to create SW control information for controlling.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram of an ATM PVC network line setting system showing an embodiment of the present invention. Figure 1
, Two ATM terminals T01 and T02 and six ATM switches SW01 to SW06 are connected to the optical fiber L0.
They are interconnected via 1 to L09. Where P0
1-1 to P06-6 are port numbers of SW01 to SW06. The port number of the ATM switch located at the tip of the optical fiber connected to the ATM switch is the AT to which the optical fiber (hereinafter, link) L01 to L09 is connected.
Indicates the port number of the M switch. The ATM switches SW01 to SW06 have the SW control terminals CTL01 to CTL01 to C, respectively.
TL06 is connected by RS232C or Ethernet. Further, one ATM PVC network line reservation automatic setting device 10000 and SW control terminals CTL01 to CTL0
6 is connected to an existing communication network such as the Internet. The SW control terminals CTL01 to CTL06 own network addresses ctl01 to ctl06.
Needless to say, the configurations of the ATM terminal, ATM switch, SW control terminal and the like are not limited to those shown in FIG.

FIG. 2 is a block diagram of an ATMPVC network line reservation automatic setting device in the ATMPVC network line setting system shown in FIG. The ATM PVC network line automatic reservation device 10000 has a reservation information management including an input unit 11100 that controls input from a keyboard or a mouse, an output unit 11200 that controls output to a display, and a reservation information storage unit 12100 that stores reservation information. Part 12000,
A route search unit 13000 having a search result temporary storage unit 13100 for temporarily storing a route search result between ATM terminals, A
ATM terminal information storage unit 1410 for storing TM terminal information
An ATM terminal information management unit 14000 which has 0 and manages ATM terminal information, and a SW information storage unit 1 which stores SW information.
SW information management unit 1 having 5100 and managing SW information
5000, a SW adjacency information storage unit 16100 that stores SW adjacency information, a SW adjacency information management unit 16000 that manages SW adjacency information, and a link information storage unit 17100 that stores link information, and manages link information. Link information management unit 17000, a storage for storing switching information .
A switching information management unit 18000, which has an switching information storage unit 18100 and manages switching information, S
SW control reservation information storage unit 19 for storing W control reservation information
SW control reservation information management unit 19000 having 100, network interface unit 11300 for sending SW control information to the communication network and these input unit 11100, output unit 11200, reservation information management unit 12000, route search unit 13000, ATM terminal information management unit. 14000, SW
Information management unit 15000, SW adjacent information management unit 1600
0, link information management unit 17000, switching information management unit 18000, SW control information transmission unit, control unit 1100 for controlling network interface unit 11300.
It consists of zero.

FIG. 3 is a detailed block diagram of the reservation information storage unit in the ATM PVC network line automatic reservation setting device shown in FIG. The reservation information storage unit 12100 stores a plurality of reservation information 12200, 12300, 12400.
The reservation information 12200, 12300, 12400 is created by the input unit 11100 and stored. Details of the reservation information 12400 will be described below. Reservation number column 1
In 2401, a reservation number R3 for identifying reservation information from other reservation information is described. Details of the reservation information table 12410 are as follows. Use start time column 12
In 411, the scheduled time t1 to start using is described,
The use end time 12412 describes the scheduled time t2 when the use ends. Also, the calling ATM terminal name field 1241
3, the ATM terminal name T01 and the end AT for data transmission
An ATM for receiving data is provided in the M terminal name field 12414.
The terminal name T02 is described. Further, a band column 1241
5 describes a band 10M required for data transmission / reception between the originating ATM terminal / the final ATM terminal.

FIG. 4 is a detailed block diagram of the ATM terminal information storage section in the ATM PVC network line reservation automatic setting apparatus in FIG. The ATM terminal information storage unit 14100 stores ATM terminal information 14200, 14300 regarding a plurality of ATM terminals T01, T02 included in the ATM PVC network line setting system shown in FIG. The ATM terminal information 14200, 14300 is input / created by the input unit 11100 and stored. ATM terminal information 1420
Details of 0,14300 are as follows. That is, in the ATM terminal name fields 14210 and 14310,
The ATM terminal names T01 and T02 are described and distinguished from other ATM terminal information. Also, the connection destination SW name column 1422
SWs to which ATM terminals are connected to 0 and 14320
The names SW01 and SW02 are described.

FIG. 5 is a detailed block diagram of the SW information storage unit in the ATM PVC network line reservation automatic setting device in FIG. The SW information storage unit 15100 is the same as A shown in FIG.
Multiple ATMs included in TMPVC network line setting system
SW information 1520 regarding switches SW01 to SW06
0,15300,15400,15500,1560
It has accumulated 0,15700. SW information 15200-
15700 is input / created by the input unit 11100 and stored. The details of the SW information 15700 will be described below, but the other SW information is exactly the same.
SW06 is described in the SW name column 15710, and other SW information 15200 to 15600 to SW information 1570.
0 is identified. SW control terminal address column 15720
The SW control terminal CTL0 connected to SW06.
6 address ctl06 is described. The details of the resource table 15730 are as follows. The resource table 15730 includes a port number column 15740,
Output VPI column 15750, output band column 15753,
Output VCI column 15756, Input VPI column 1576
0, input band column 15763, and input VCI column 1
It is composed of 5766. In the port number column 15740, port numbers P06-1, P06- owned by the SW are stored.
2, ... P06-6 is described. Also, output VPI
In the column 15750 of “,” the VPI value that can be output from the port having the port number in the same row is described. Output band column 1575
In 3, the band available for the output VPI of the same bank is described. In the column 15756 of the input VCI, the input VPI of the same row is input.
The VCI value that can be used in is described. Input VPI column 1
In 5760, a VPI value that can be input from the port of the same port number is described. In the input band column 16763, the band available for the input VPI of the same row is described.
In the input VCI column 15766, the VCI value available for the input VPI of the same row is described.

FIG. 6 is a detailed block diagram of the SW adjacency information storage unit in the ATM PVC network line automatic reservation setting device shown in FIG. The SW adjacency information accumulating unit 16100 includes the SW adjacency information 15110-1 related to the plurality of ATM switches included in the ATM PVC network line setting system shown in FIG.
5610 has been accumulated. SW adjacent information 15110-1
5610 is input / created by the input unit 11100 and stored. The SW adjacency information 15110 to 15610 is S
It is composed of W name columns 15120 to 15620 and SW adjacency information tables 15130 to 15630. The SW adjacency information tables 15130 to 15630 include port number columns 15140 to 15640 and connection destination device name column 151.
It is composed of 50 to 15650. By referring to this table, the connected switch or terminal connected to the port having the port number becomes clear.

FIG. 7 is a detailed block diagram of the SW adjacency matrix information storage unit in the ATM PVC network line reservation automatic setting device in FIG. SW adjacency matrix information storage unit 16500
Stores one SW adjacency matrix information 16510. The SW adjacency matrix information 16510 is generated by the SW adjacency information management unit 16000. SW adjacency matrix information 16
The details of 510 are as follows. That is, S
The W adjacency matrix information 16510 is the SW adjacency information storage unit 16
SW adjacency information 15110-15 stored in 100
610 ATM switches SW01 to SW06 are arranged in rows and columns. Each matrix element is a row element ATM
When the switch and the ATM switch of the column element are connected, the element is given "1". If not connected, '0' is given.

FIGS. 8 and 9 show the ATM PVC in FIG.
It is a detailed block diagram of a link information storage unit in the network line reservation automatic setting device. The link information storage unit 17100 is shown in FIG.
Link information 1720 relating to the plurality of links L01 to L09 included in the ATM PVC network line setting system shown in FIG.
0,17250,17300,17350,1740
0,17450,17500 are accumulated. The link information 17200 to 17500 is the link information management unit 170.
It is generated from 00. Hereinafter, the link information 17200 will be described in detail, but the others are exactly the same. The link information 17200 includes a link information number column 17201 and two pieces of link child information 17200-1 and 17200-2. In the link number column 17201, the link number L
01 is described, and other link information 17250 to 1760
The link information 17200 is identified from 0 and is daring. The link child information 17200-1 includes a link child information number column 17201-1 for uniquely identifying the link child information, and an output SW name column 1
7212-1, output port number column 17214-1, input SW name column 17213-1, input port number column 17
215-1, a resource table 172220-1, and a reservation table 17230-1. In the output SW name column 17212-1, the ATM switch name SW0 for outputting the ATM cell in the link connected to one end of the link
1, the output port number column 1724-1 has a link L
Port number P01-1 of SW01 to which 01 is connected
Is described. The input SW name column 17213-1 is connected to the other end of the link by an ATM switch name SW02 for inputting an ATM cell into the link, and the input port number column 17215-1 is connected to the link L01. S
The port number P02 of W02 is described.

The resource table 172220-1 has an input S from an output port P01-1 of SW01 which is an output SW.
A column 17221-1 of VPI values of ATM cells that can be used for the input port P02-4 of SW02 that is W, and a column 17222 of VCI values of ATM cells that can be used in each VPI.
-1, available bandwidth 17223-for each VPI value
It consists of one row. Also, the reservation table 17230
-1 is a reservation number column 17231-1, a use start time column 17232-1, a use end time column 17233-1, and a reserved VPI value column 1723 in the reservation number.
4-1, the reserved VCI value column 17235-1,
It is composed of a reserved band column 17236-1. Similarly, the other link child information 17200
2 is a link child information number column 1721-2 for uniquely identifying the link child information, and an output SW name column 17212-
2, output port number column 17214-2, input SW name column 17213-2, input port number column 17215-
2, a resource table 17220-2, and a reservation table 17230-2. Output SW name column 1
7212-2, the input SW name column 17213-2 has an ATM switch name S opposite to the link child information 17200-1.
W02 and SW01 are described. Output port number column 1
72142-2 and the input port number column 17215-2 also describe port numbers P02-4 and P01-1 that are opposite to the link child information 17200-1. That is, in the output SW name and input SW name fields, the ATM switch names SW02 and SW01 that output ATM cells in the links connected to both ends of the link, and in the output port number and input port number fields Is the S to which the link L01 is connected
Port numbers P02-4 and P01-1 of W02 and SW01
Is described. The resource table 17220-2 includes a column 17221-2 of VPI values of ATM cells that can be used from the port number P02-4 of the output SW02 to the port number P01-1 of the input SW01, and each VPI.
1722 of VCI values of ATM cells available in
2-2, available bandwidth 17223 at each VPI value
-2 columns. Reservation table 17230-2
Is a reservation number column 17231-2, a use start time column 17232-2 in the reservation number, and a use end time column 17
233-2, reserved VPI value column 17234
2, a reserved VCI value column 17235-2 and a reserved band column 17236-2.

FIG. 10 is a detailed block diagram of the search result temporary storage unit in the ATM PVC network line reservation automatic setting device in FIG. The search result temporary storage unit 13100 displays the source A
A search result table 13200 in which candidate routes obtained by searching from the TM terminal name to the final ATM terminal name are recorded is temporarily stored. The search result table 13200 includes a candidate route number column 13400 and an originating ATM terminal name column 1341.
4, end ATM terminal name column 13415, link child information number column 13420-13426, SW name 13430-13
It is composed of 435 rows. In each row, links and SWs from the originating ATM terminal T01 to the final ATM terminal T02 in candidate route 1, candidate route 2, candidate route 3, and candidate route 4 are recorded in order.

11 and 12 show the ATMP in FIG.
It is a detailed block diagram of a switching information storage unit in the VC network line reservation automatic setting device. Switching information storage unit 1
8100 is a plurality of switching information 18100, 18
300 and 18400 are accumulated. The switching information 18100, 18300, 18400 is generated by the switching information management unit 18000. Hereinafter, the switching information 18400 will be described in detail, but other switching information has the same content. Switching information 18
Reference numeral 400 denotes a reservation number column 18410, a use start time column 18411, a use end time column 18412, a used bandwidth column 18413, and a switching information table 184.
It consists of 16. Switching information table 184
Reference numeral 16 denotes a calling ATM terminal name column 18414, a final ATM terminal name column 18415, and a link child information number column 18420 to.
18424, link number information number 18420 to 184
Column 1 of VPI value of ATM cell reserved by 24 links
8420-1 to 18424-1, link number information number 18420 to 18424 VCI value column 18420-2 to 18424-2 of the ATM cell reserved by the link, S
W name column 18430-18434, SW name column 1843
Input port columns of SWs 18420-3 to 18424 for inputting cells from the links on the left of 0 to 18434, respectively.
-3, SW output port columns 18420-0 to 18424-0 for outputting cells to the link on the right side of the SW.

FIGS. 13 and 14 show the ATMP in FIG.
It is a detailed block diagram of a SW control reservation information storage unit in the VC network line reservation automatic setting device. SW control reservation information storage unit 1
9100 is a plurality of SW control reservation information 19200 to 19
Has accumulated 400. Hereinafter, SW control reservation information 194
00 will be described in detail, but other information has exactly the same content. The SW control reservation information 19400 is stored in the reservation number column 19
401, a use start time column 19411, a use end time column 19412, and a plurality of SW control information 19420 to 194.
It consists of 50. SW control information 19420 to 194
Reference numeral 50 denotes SW control terminal address columns 19421 to 194.
51, line holding time columns 19422 to 19452, band columns 19423 to 19453, input port number columns 19424 to 19454 for inputting ATM cells, and input A
Input VPI value columns 19425 to 19455 of the TM cell,
Input VCI value column 19426-1 of ATM cell to be input
9456, Output port number column 1 for outputting ATM cells
9427 to 19457, output VP of ATM cell to be output
It is composed of I value columns 19428 to 19458 and output VCI value columns 19429 to 19459 of the output ATM cell.

FIGS. 15, 16 and 17 are SW adjacency matrix information and link information generation processing flowcharts in the ATM PVC network line automatic reservation setting device in FIG.
This processing is performed by the ATM PVC network line reservation automatic setting device 1
Input unit 11100 of 0000, control unit 11000, SW
Adjacent information management unit 16000, link information management unit 1700
0, the SW information management unit 15000 and the ATM terminal information management unit 14000 are related. In addition, the ATM terminal information in the ATM terminal information storage unit 14100, SW
It is assumed that the SW information in the information storage unit 15100 and the SW adjacent information in the SW adjacent information storage unit 16100 have already been created / stored from the input unit. SW from the input section
An adjacency matrix information and link information generation processing start request is input (S100). As a result, the control unit requests the SW adjacency information management unit 16000 to create SW adjacency matrix information (S110). SW adjacent information management unit 160 that has received the request
00 generates in the SW adjacency matrix information storage unit 16500 a template of the SW adjacency matrix information 16510 in which the SW names of the SW adjacency information 15110 to 15610 stored in the SW adjacency information storage unit 16100 are arranged in rows and columns. ). S
Nothing has been assigned to the matrix elements of the W adjacency matrix information 16510. Therefore, the SW adjacent information management unit 16000
Indicates the presence / absence of connection between the row element SW and the column element SW of the SW adjacency matrix information 16510.
SW adjacent information tables 15130 to 1563 of 5610
Judging from 0, if there is a connection relationship, the matrix information is '1', and if there is no connection relationship, the matrix element is '0'.
Is substituted (S140). The SW adjacency information management unit 16000 that has completed the numerical value substitution for the matrix element notifies the control unit that the SW adjacency matrix information has been created (S150). Upon receiving the SW adjacency matrix information creation end notification, the control unit requests the link information management unit 17000 to create link information (S16).
0). Upon receiving the link information creation request, the link information management unit 17000 starts creating link information between SWs (S165). The link information management unit 17000 notifies the SW adjacency information management unit 16000 to the SW adjacency matrix information 16510.
Is requested (S167). Upon receiving the request, the SW adjacency information management unit 16000, the SW adjacency matrix information touch accumulation unit 1650
The SW adjacency matrix information 16510 accumulated in 0 is returned (S169).

The link information management unit 17000 searches the SW adjacency matrix information 16510 for a matrix element whose matrix element is "1" (S170). Link information management unit 1 that has searched for matrix elements (SW01, SW02) that are "1"
The 7000 determines that there is a link between the SW of the row element and the SW of the column element, and confirms whether or not the corresponding link information exists in the link information storage unit 17100 (S17).
5). The corresponding link information is the input SW, the output SW, or the output S of the row element SW01 and the column element SW02.
W, described as input SW. If it already exists,
Whether or not there is an unsearched matrix element is confirmed (S176). If there is an unsearched matrix element, the process returns to S170 and the search process is repeated. If the link does not exist in the link information storage unit 17100, the link information management unit 17000 creates a template of the link information 17200 in the link information storage unit 17100. The link information management unit 17000 describes the link information L01 that uniquely identifies the link information from other link information in the link number field 17201 of the link information, and the link of one link child information 1720-1 of the link information 17200. Child information number column 17201-1, output SW column 1
7212-1, input SW column 17213-1, link child number L01-1, row element SW01, column element SW
02 is the link child information number column 17201-1 of the other link child information 17200-1, and the output SW column 172.
12-2, the input SW column 17213-2 has a link child number L01-2, a column element SW02, and a row element SW01.
Is described (S210). Next, the link information management unit 17
000 is each link child information 17200-1, 17200
-2 resource tables 17220-1, 17220-
Creation of No. 2 is started (S220). Link information management unit 1
7000 is a row element SW01 and a column element SW
No. 02 SW information is requested to the SW information management unit 15000 (S230). SW information management unit 15000 that received the request
Is SW information 15200 and 153 of SW01 and SW02.
00 to the link information management unit 17000 (S23
5).

The link information management unit 17000 uses the line element S.
The SW adjacency information of W01 and column element SW02 is requested to the SW adjacency information management unit 16000 (S237). Upon receiving the request, the SW adjacent information management unit 16000, SW01, SW0
The second SW adjacency information 15110 and 15210 is returned to the link information management unit 17000 (S239). Next, the link information management unit 17000, the SW adjacent information 15110,
The port numbers P01-1 and P02-4 in which the row element SW01 and the column element SW02 are mutually connected are searched from 15210, and P01-1 is displayed in the output port number column 17214-1 and the input port number column 17215-2. And output port number column 17214-2, input port number column 1
P02-4 is recorded in 7215-1. SW information 152
00, 15300 to the port P01-1 of SW01, the bandwidth available at each VPI value, the VCI value available at each VPI value, and the port P of SW02.
VPI value that can be input to 02-4, bandwidth that can be used with each VPI value, and VCI value that can be used with each VPI value, and VPI value of the ATM cell that can be used in the link L01,
The bandwidth available for each VPI value and each VPI value are collated and recorded in the resource table 172220-1. Similarly, VPI that can be output from the port P02-4 of SW02
Value, bandwidth available at each VPI value, VCI value available at each VPI value, VPI value of ATM cell that can be input to port P01-1 of SW01, bandwidth available at each VPI value, each VPI value VCI value available in link L01, VPI value of ATM cell available in link L01, each V
The usable bandwidth and each VPI value are collated with the PI value and recorded in the resource table 17220-2 (S250). The generation of the corresponding link information ends (S260). The link information management unit 17000 confirms the presence or absence of an unsearched matrix element (S176), and if there is no unsearched matrix element, SW
The creation of the link information between them ends (S262).

The link information management unit 17000 starts creating link information between the ATM terminal / SW (S265).
The link information management unit 17000 requests all the ATM terminal information from the ATM terminal information management unit (S270). The ATM terminal information management unit that receives the request returns all the ATM terminal information (S280). The link information management unit 17000
The received ATM terminal information is searched from the ATM terminal information 14300 in the order of ATM terminal name column 14210 to T02, and in the connection destination SW name column 14320 from SW03 (S2).
85). The link information management unit 17000 confirms whether there is link information between T02 and SW03 in the link information storage unit 17100 (S290). Where T02 and SW
Link information between 03 is input SW of T02 and SW03,
The link information is described as the output SW or the output SW and the input SW. The link information management unit 17000
If the link information storage unit 17100 has the corresponding link information, the presence or absence of unsearched ATM terminal information is confirmed (S29).
5) If there is unsearched ATM terminal information, the ATM terminal information connection destination SW search (S285) is repeated. When the link information management unit 17000 confirms that the link information between T02 and SW03 does not exist in the link information storage unit 17100, it generates a link information template 17600 (S300). The link information management unit 17000 displays other link information 17600, 17650, 17300, 173 in the link number column 17601 of the link information 17600.
50, 17400, 17450, 17500, 1755
The link information number L09 that uniquely identifies the link information 17600 from 0 is described. Further, the link child information number column 17 of one link child information 17600-1 of the link information
601-1, input SW column 17612-1, and output SW column 17613-1 include L09-1, SW03, and T02.
Of the other link child information 17600-2, a link child information number column 17601-2, and an input SW column 17612.
-2, output SW column 17613-2 describes the link child information number, ATM terminal name, and connection destination SW name (S30).
0).

Next, the link information management unit 17000 starts to create the resource tables 17620-1 and 17620-2 of the respective link child information 17600-1 and 17600-2 (S310). The link information management unit 17000
It requests the SW information of SW03 from the SW information management unit 15000 (S330). SW information management unit 150 that received the request
00 returns the SW information 15400 of SW03 to the link information management unit 17000 (S335). Next, the link information management unit 17000 sets the SW adjacency information of SW03 to S
A request is made to the W adjacent information management unit 16000 (S337).
The SW adjacent information management unit 16000 that has received the request sends SW0
The SW adjacency information 15310 of 3 is set to the link information management unit 170
To 00 (S339). Link information management unit 170
00 searches the port number P03-6 to which T02 is connected from the SW adjacency information 15310, and the SW information 154
00 to port P03-6 output VPI value, bandwidth available at each VPI value, V available at each VPI value
CI value, VPI value that can be input to the port P03-6, bandwidth available at each VPI value, V available at each VPI value
The CI value is searched and the resource table 17620-1,1 is searched.
It writes to 7620-2 (S350), and ends the generation of the corresponding link information (S360). Then, the link information management unit 17000 confirms the presence or absence of the unsearched ATM terminal information (S295), and if the unsearched ATM terminal information does not exist, finishes the link information creation between the ATM terminal / SW (S370). The link information management unit 17000 notifies the control unit 11100 of the completion of link information creation (S38).
0). Control unit 1110 that received the link information creation notification
0 displays the SW adjacency matrix information / link information creation end message on the output unit 11200 (S390), and ends the SW adjacency matrix information / link information creation processing (S40).
0).

FIGS. 18, 19 and 20 show the ATM of FIG.
It is a flow chart of ATM PVC line reservation processing in the PVC network line reservation automatic setting device. Means related to this processing are an input unit 11100, a control unit 11000, a reservation information management unit 12000, a route search unit 13000, an ATM.
Terminal information management unit 14000, link information management unit 1700
0, switching information management unit 18000, SW control reservation information management unit 19000, and SW information management unit 1500.
It is 0, and almost all means are associated with processing. already,
ATM terminal information in the ATM terminal information storage unit 14100, SW information 152 in the SW information storage unit 15100
00 to 15700, and the SW adjacency information 15110 to 15610 in the SW adjacency information storage unit 16100 is the input unit 11
100 is created / stored, and the SW adjacency matrix information 16510 in the SW adjacency information storage unit 16100 and the link information 172 in the link information storage unit 17100.
It is assumed that 00 to 17600 are generated / accumulated by the SW adjacency matrix information and link information generation processing flow shown in FIG. First, a line reservation start request is input from the input unit 11100 (S500). The control unit 11000 causes the reservation information management unit 12000 to generate a reservation information template in the reservation information storage unit 12100 and request the output unit 11200 to output the template (S510). The reservation information management unit 12000, which has received the reservation information template generation / output request, sets the reservation information 124.
The template of 01 is generated and output to the output unit 11200 (S
512). From the input unit 11100, the scheduled start time t1 is entered in the usage start time column 12411 of the reservation information 12401, and the scheduled end time t3 is entered in the usage end time column 12412. Also, the ATM terminal name T01 for transmitting data is sent to the calling ATM terminal name field 12413.
The ATM terminal name T02 for receiving data is entered in the final ATM terminal name field 12414. In the bandwidth column 12415, the bandwidth 10M required for data communication between the originating ATM terminal / the final ATM terminal is input (S520).

After completing the reservation information table 12410, a reservation request is input from the input unit 11100 (S5).
30). Upon receiving the line reservation request notification from the input unit 11100, the control unit 11000 causes the reservation information management unit 12000 to transmit a band 10M from the calling ATM terminal to the end A of the band 10M between the use start time t1 and the use end time t2 of the reservation information table 12410.
Request the reservation of a route that can be used between TM terminals (S54
0). Reservation information management unit 120 that received the route reservation request notification
00 indicates the start time t1 of using the reservation information between the calling ATM terminal T01 and the final ATM terminal T02 in the route search unit 13000.
From the request to the use end time t2, a request is made for a route search in which the bandwidth can be used (S545). Calling ATM terminal T01 to ending A
The route search unit 1 that has received the route search request between the TM terminals T02
3000 sends AT to ATM terminal information management unit 14000
A search request for a connection destination SW to which the M terminal T01 and the final ATM terminal T02 are connected is issued (S550). The ATM terminal information management unit 14000 that receives the search request receives the calling ATM terminal T0 stored in the ATM terminal information storage unit 14100.
ATM terminal information 14200 of 1 and the end ATM terminal T02,
From 14300 to the connection destination SW columns 14220 and 14320
SW01 and SW03 are searched from the route search unit 1300
It responds to 0 (S560). Route search unit 1 that received the response
3000 uses SW adjacency matrix information stored in the SW adjacency matrix information storage unit 16100 to switch from SW01 to S01.
A route search between W03 is started (S570). This route search algorithm is described in the document "Algorithm Design and Analysis 1"('GraphAlgorithm' Science Company, p154-
204, 1977), it is possible to apply the depth-first search of the graph to search the path from any one point to all other points in the connected graph. .

The route search unit 13000 determines the obtained SW01.
Through SW03, all candidate routes are sequentially stored in the search result table 13200 of the search result temporary storage unit 13100 by providing a certain priority criterion (for example, in the order of the number of SWs on the route in this flow) (S580). The route search unit 13000, in order from the candidate route 1 stored in the search result table 13200 of the search result temporary storage unit 13100, the link child information numbers of the links on the candidate route, the use start time t1 of the reservation information 12400 in each link, The link information management unit 17000 is inquired about the availability of the bandwidth 10M during the utilization end time t2 (S590). Upon receiving the inquiry, the link information management unit 17000 sequentially searches the link information storage unit 17100 for the link child information numbers of all the links on the candidate route from the calling ATM terminal side, and compares the reservation table and the resource table of each link child information. Then, the VPI value that can be used between the use start time and the use end time,
It is determined whether or not there is an available VCI value and an available band (S610). Link information management unit 1 that received the inquiry
7000 is an inquiry to the route search unit 13000 when there is no available VPI value or an available VCI value from the use start time to the use end time for some links on the candidate route. A notification of unavailability is issued on the received candidate route (S620). The route search unit 13000, which has received the notification of the unavailability, repeats the process of S590 for the next candidate route if there is an uninquired next candidate route (S630). Link information management unit 1
When the judgment of 7000 is not available on all candidate routes,
The reservation information management unit 12000 is notified that all candidate reservations are not possible (S640). Reservation information management unit 12000, which has received the notification indicating that the reservation is not possible, notifies control unit 11000 that the reservation of the route between ATM terminals is not possible (S642). The control unit 11000, which receives the notification that the ATM terminal route reservation is impossible,
Reservation disabled is displayed on 200 (S644), and the reservation process is ended (S646).

The link information management unit 17 that received the inquiry
000 indicates a VPI value that can be used from the use start time to the use end time for all the links of the candidate route 1, an available VCI value, and an available bandwidth.
Availability notification and link child numbers L08-1, L0 on the candidate route 1 for which an inquiry has been made to 3000
1-1, L05-2, L06-1 are returned (S65
0). The route search unit 13000, which has received the notification of availability in the candidate route 1, searches the temporary search result storage unit 1310.
Link child information number columns 13421, 13422, 1342 of the row of candidate number 1 of the search result table 13200 of 0
3 link child information numbers L08-1, L01-1, L05
-2, L06-1 is written (S655). At the same time, the reservation information management unit 12000 outputs a response indicating that reservation is possible together with the candidate route number 1 (S660). The reservation information management unit 12000, which has received the response indicating that the reservation is possible together with the candidate route number 1, records the reservation number R3 that can be uniquely identified from other reservation information in the reservation number column 12401 of the reservation information 12400 (S6).
70), and requests the switching information management unit 18000 to create switching information together with the candidate route number 1 and the reservation number R3 (S680). Upon receiving the switching information creation request, the switching information management unit 18000 creates a switching information template 18400, and stores the reservation number R3 in the reservation number column 18410 of the switching information 18400.
Of the reservation information 12400 stored in the reservation information storage unit 12100, the use start time column 12411, the use end time column 12412, and the bandwidth start field t415 are input to the use start time t1 and the use end time t2. , The band 10M is recorded in the use start time column 18411, the use end time column 18412, and the band column 18413, and the link recorded in the column of the candidate route number 1 in the search result table 13200 of the search result temporary storage unit 13100. Child information numbers L08-1, L01-1, L05-2, L06-1 and SW names SW01, SW02, SW06, SW03 are linked child number columns 18420 to 18424 of the switching information table 18416 of the switching information 18400.
In the SW name column 18430 to 18433 in that order. The switching information management unit 18000 sequentially applies corresponding link child information numbers L08-1, L01-1, L05-.
2, the output port number column of the L06-1 link child information,
The output port number recorded in the input port number column,
Bandwidth 10M between the use start time t1 and the use end time t2 within the range of the resource table
The reservation of the VPI value and VCI value that can be used by the user is the use start time column 18411, the use end time column 18412, the band number 18413, the reservation number R3, the use start time t1, the use end time t2, and the band 10M. At the same time, it requests the link information management unit 17000 (S710).

The link information management unit 17000 that received the request
Are link child information numbers L08-1, L01-1, L05
-2, L06-1 link child information 17550-1, 1
The resource table in 7200-1, 17400-2, and 17450-1 is compared with the reservation table, the VPI value and VCI value that can be used by the bandwidth 10M are searched from the use start time t1 to the use end time t2, and the link child is searched. Information numbers L08-1, L01-1, L05-2, L06-1
The VPI value, the VCI value, and the band are recorded together with the reservation number in the reservation table of the link information table of the link child information number L08-1, L01-1, L05-2, L06-1 of the link child information 17550-1, 17200. -1,174
00-2, 17450-1, the output port number and the input port number recorded in the input port number column, the input port number, the VPI value, and the VCI value are returned to the switching information management unit 18000 as a reservation end response ( S72
0). Link child information numbers L08-1, L01-1, L0
5-2 and L06-1, link port information output port number column, input port number column, output port number, input port number, link child information number L08-1, L
The switching information management unit 18000, which has received the reservation end response together with the VPI value and the VCI value reserved in the link reservation tables of 01-1, L05-2, and L06-1,
Corresponding link child information number L0 in the switching information table 18416 of the switching information storage unit 18100
VPI of 8-1, L01-1, L05-2, L06-1
Column 18420-1 to 18424-1, VCI value column 1
8420-2 to 18424-2, output port number column 1
8420-0 to 18424-0, input port number column 1
The received output port number, input port number, VPI value, and VCI value are recorded in 8420-3 to 18424-3 (S730), and a switching information creation end notification is issued to the reservation information management unit 12000 (S735). Reservation information management unit 1200 that has received the switching information creation end notification
0 is the SW control reservation information management unit 1 together with the reservation number R3
Request creation of SW control information to 9000 (S74
0). Upon receiving the SW control information creation request together with the reservation number R3, the SW control reservation information management unit 19000 generates a SW control information template 19400 (S745), records the reservation information number R3 in the reservation number column 19401, and reserves it. Reservation information number R3 stored in the information storage unit 12100
Of the reservation start time 12400 of the reservation information 12400 of
The use start time t1 and the use end time t2 input in the use end time column 12412 and the band column 12415 are used as the use start time column 19411 and the use end time column 1941, respectively.
2 and the SW name column 184 of the switching information table 18416 of the switching information 18400 of the reservation number R3 stored in the switching information storage unit 18100.
SW01 and SW0 recorded in 30 to 18433
2, SW06, SW03 and the SW information management unit 15000 are requested to retrieve the address of the SW control terminal of each SW (S750).

SW01, SW02, SW06, SW03
Upon receipt of the SW control terminal address search request, the SW information management unit 15000 operates as SW01, SW02, SW0.
6, the SW control terminal address of SW03 is the SW information 15200, 15300, 157 of the SW information storage unit 15100.
00, 15400, SW01, SW02, S
W06, SW03 SW control terminal address ctl01,
It responds to the SW control reservation information management unit 19000 together with ctl02, ctl06, and ctl03 (S760). S
SW control terminal address ctl01, ctl02, ctl06, ctl of W01, SW02, SW06, SW03
SW control reservation information management unit 19000 that received 03
Is ctl01, ctl02, ctl0 in the SW control terminal address column of the SW control information 19420 to 19450.
Record 6 and ctl03, input port number column 1942
The switching information table 1841 is provided in 4 to 19454.
6 input port number columns 18430-3 to 18433
A value of 3 is recorded. Also, the input VPI value column 1942
The switching information table 1841 is included in 5 to 19455.
The values of the columns 18420-1 to 18423-1 of the VPI of No. 6 are recorded, and the columns 1426 to 19456 of the input VCI value include the column 1 of the VCI of the switching information table 18416.
The values of 8420-2 to 18423-2 are recorded, and the output port number column 19427 to 19457 has an output port number column 1842 of the switching information table 18416.
Values 1-0 to 18424-0 are recorded. Further, the output VPI value columns 19428 to 19458 include 18421-1 to 1842 of the switching information table 18416.
4-1 is recorded in the output VCI value column 19429 to 19
18 is a switching information table 18416
421-2 to 18424-2 are recorded, and the bandwidth column 19
In 423 to 19453, the value 10M in the band field 18413 of the switching information 18400 is recorded. further,
The line holding time columns 19422 to 29452 include the value t1 of the use start time column 19411 and the use end time column 19
The difference value t2-t1 of the value t2 of 412 is recorded (S
770). The reservation information management unit 12000 is notified of the completion of SW control information creation (S780). Reservation information management unit 12000, which has received the SW control information creation end notification, notifies control unit 11000 of the end of route reservation between ATM terminals (S790). The control unit 11000, which has received the route reservation end notification between the ATM terminals, displays the end of reservation on the output unit 11200 (S795) and ends the reservation process (S8).
00).

FIG. 21 is a flow chart of the automatic line setting process of the ATM PVC network line setting system in FIG. The SW control reservation information management unit 19000 constantly compares the current time with the values in the use start time columns 192111 to 19411 of the SW control reservation information 19200 to 19400 stored in the SW control information storage unit 19100 ( S900). SW in which the use start time of the SW control reservation information 19400 matches the value t1 of the current time column 19411
When the existence of the control reservation information 19400 is confirmed (S91
0), the SW control information 19420 to 19450 of the corresponding SW control reservation information 19400 is set to the respective SW control information 19420 to
SW control terminal address column 19421 in 19450
~ 19451 SW control terminal address ctl0
1, ctl02, ctl06, ctl03 (S920). SW control terminals CTL01, CTL02,
CTL06 and CTL03 are SW control information 19420-
The SW is controlled according to the content of 19450 to set the line, and the line is held for the line holding time (S930). As described above, in the present embodiment, the source A that transmits the data is transmitted.
TM terminal name, end ATM terminal name for receiving data, use start time for starting use, use end time for ending use,
By inputting the bandwidth required for data transmission / reception as the reservation information in the reservation information storage unit of the ATM PVC network line reservation automatic setting device, the band required by the ATM PVC network line reservation automatic setting device from the use start time to the use end time The route of the originating ATM terminal / the final ATM terminal that can be used by the terminal, creates the SW control information for controlling the ATM switch on the route, sends the SW control information to the SW control terminal at the use start time, The PVC line between the terminal ATM terminals can be automatically set.

[0031]

As described above, according to the present invention,
ATM PVC network line automatic reservation device originated from ATM terminal /
Since the PVC line between the end ATM terminals is automatically set, it is possible to use the bandwidth A between the use start time and the use end time.
AT on the route seeking a route between the TM terminal / the final ATM terminal
It is not necessary to create the SW control information for controlling the M switch, and the PVC line between the originating ATM terminal / the final ATM terminal can be used. Also, ATMs stored in the SW information management unit
Based on the SW information, which is the information of the resources that can be used at each port of the switch, the range of the resources automatically set by the ATM PVC network line setting system can be set to each SW
It can be limited to each port.

[Brief description of drawings]

FIG. 1 is a block diagram of an ATM PVC network line setting system showing an embodiment of the present invention.

FIG. 2 is a detailed block diagram of an ATM PVC network line reservation automatic setting device in FIG.

FIG. 3 is a detailed block diagram of a reservation information storage unit in FIG.

FIG. 4 is a detailed block diagram of an ATM terminal information storage unit in FIG.

5 is a detailed block diagram of a SW information storage unit in FIG.

FIG. 6 is a detailed block diagram of a SW adjacent information storage unit in FIG.

FIG. 7 is a detailed block diagram of a SW adjacency matrix information storage unit in FIG.

FIG. 8 is a part of a detailed block diagram of a link information storage unit in FIG.

FIG. 9 is a remaining part of the detailed block diagram of the link information storage unit.

FIG. 10 is a detailed block diagram of a search result temporary storage unit in FIG.

11 is a part of a detailed block diagram of a switching information storage unit in FIG.

FIG. 12 is the remaining part of the detailed block diagram of the switching information storage unit.

13 is a part of a detailed block diagram of a SW control information storage unit in FIG.

FIG. 14 is the remaining part of the detailed block diagram of the SW control information storage unit.

FIG. 15 is a part of a flowchart of SW adjacency matrix information and link information generation processing according to an embodiment of the present invention.

FIG. 16 is another part of the flowchart of the SW adjacency matrix information and link information generation processing.

FIG. 17 is a remaining part of the flowchart of the SW adjacency matrix information and link information generation processing.

FIG. 18 is a part of a flowchart of ATM PVC network line reservation processing showing an embodiment of the present invention.

FIG. 19 is another part of the flowchart of the ATM PVC network line reservation process.

FIG. 20 is the remaining part of the flowchart of the ATM PVC network line reservation process.

FIG. 21 is a flowchart of an automatic line setting process showing an embodiment of the present invention.

FIG. 22 is a block diagram of a conventional ATM PVC network line setting system.

FIG. 23 is a configuration diagram of an ATM PVC network line setting device in a conventional ATM PVC network line setting system.

FIG. 24 is a flowchart of a line setting process in a conventional ATM PVC network line setting system.

[Explanation of symbols]

10000 ... ATM PVC network line reservation automatic setting device, 1
1000, 21000 ... Control unit, 11100, 2110
0 ... Input unit, 11200, 21200 ... Output unit, 120
00 ... Reservation information management unit, 113000, 21300 ... Network interface unit, 13000 ... Route search unit, 12100 ... Reservation information accumulation unit, 13100 ... Search result temporary storage unit, 14000 ... ATM terminal information management unit, 1
4100 ... ATM terminal information storage unit, 15000 ... SW information management unit, 15100 ... SW information storage unit, 16000 ...
SW adjacent information management unit, 16100 ... SW adjacent information storage unit, 16500 ... SW adjacent matrix information storage unit, 17000
... link information management unit, 17100 ... link information storage unit,
18000 ... Switching information management unit, 18100 ... Switching information storage unit, 19000 ... SW control reservation information management unit, 19100 ... S
W control reservation information, 20000 ... ATM PVC network line setting device, 29000 ... SW control information transmission unit, 19100 ... SW control information storage unit, 29100 ... SW control information.

Continued Front Page (56) References JP-A-7-154392 (JP, A) JP-A-9-233089 (JP, A) Kazuyuki Kawashima, Hiroshi Suzuki, Naoki Mori, Atsushi Iwata, ATM Internet Management System : ATOMVIEW, November 25, 1994, IEICE Technical Report IN94-127 Kenji Tsunekawa, Toshihiko Wakahara, Mitsuhiro Yuito, Investigation of route selection and resource management method in automatic line setting of ATM-PVC network, Communication Technical report IN96-83 Kenji Tsunekawa, Toshihiko Wakahara, Mitsuhiro Yuhito, Automatic line setting system for ATM PVC networks, 1996 Shingaku Seo Univ. B-858 (58) Fields investigated (Int.Cl. ⁷ , DB name) H04L 12/56

Claims (2)

(57) [Claims] 1. A SW control terminal for controlling an ATM switch, and SW control information is transmitted to the SW control terminal via a communication network to allow the SW control terminal to control the ATM switch.
What is claimed is: 1. An ATM PVC network line reservation automatic setting device comprising an ATM PVC network line reservation automatic setting device for setting a VC line, wherein the ATM PVC network line reservation automatic setting device is at the start of use.
Time, end time of use, originating ATM terminal name, final ATM terminal name,
Reservation information managing means for registering and managing bandwidth reservation information in the reservation information table and SW adjacency information which is information of an ATM terminal or an ATM switch adjacent to each ATM switch port number.
SW adjacency information management means for registering in the SW adjacency information table for storage management, and a route from the calling ATM terminal to the final ATM terminal in the reservation information, based on the SW adjacency matrix information, and a candidate route searched , Which is information of an ATM switch adjacent to each of the ATM terminals, and a route search means for selecting a route in which the band in the reservation information can be used between the use start time and the use end time.
ATM terminal information managing means for storing and managing TM terminal information, address of SW control terminal for controlling each ATM switch, and VPI usable at each port of the ATM switch
Value, VCI value, and SW information that is information on bandwidth resources
The SW information managing means for registering and storing and managing in the resource table and the resources available through the link connecting the ATM switches are registered in the ATM terminal information, the SW information registered in the resource table, and the SW adjacency information table. SW you are
Link information management means that is obtained from the adjacent information and that stores and manages the resource reservation status on each link as link information, and the VPI value, VCI value, and on-route used on each link on the route selected by the route searching means. A switching information management unit that obtains an input port number and an output port number used by each SW and stores and manages these as switching information, and S that transmits to each SW control terminal based on the switching information.
SW control reservation information managing means for creating W control information, storing the W control information as SW control reservation information, and transmitting the SW control reservation information to each SW control terminal at the use start time ATM PVC network line setting system. 2. An ATM PVC network line setting method for performing remote control by transmitting SW control information from an ATM PVC network line reservation automatic setting device to a SW control terminal and causing the SW control terminal to control an ATM switch, When the line reservation is started, the ATM PVC network line reservation automatic setting device, the start-of-use reservation time, the scheduled end-of-use time, the name of the ATM terminal that transmits the data, and the end A that receives the data.
The TM terminal name and the bandwidth required for data communication are registered in the reservation information table, and a line reservation request is made to the reservation information management means. The reservation information management means uses the route search means to search the result table.
Requesting the bandwidth of the route search available between from the onset ATM terminals registered in Le to use the scheduled end time from the use start scheduled time of the reservation information for up to end ATM terminal, the route searching means is, ATM end at the ATM terminal information management means
The ATM terminal information managing means issues a search request for a connection destination SW to which the outgoing ATM terminal and the final ATM terminal in which the end information is registered are connected, and the ATM terminal information management means is an ATM of the outgoing ATM terminal and the final ATM terminal of the ATM terminal information. The connection destination SW is searched from the terminal information and responded to the route search means, which is registered in the SW adjacency information table.
Using SW adjacency matrix information are performed route search between the destination SW, which is then stored in the search result table in accordance with a predetermined priority relative to all candidate paths, the link information management unit, the candidate path Sequentially inquires about availability of the band between the use start time and the use end time of the reservation information on each link. The link information management means is registered as link information.
The above reservation information table is compared with the resource table to determine whether or not there is an available VPI value, VCI value, and band, and when there is no, the reservation information management means is notified of no reservation, and when there is one, To the switching information management unit, which notifies the switching bandwidth management unit of the link information on the route, and requests the switching information management unit to create switching information. The means creates a template of switching information, searches the output and input port numbers used for the link information management means, and uses the VP.
After requesting the reservation of the I value and the VCI value, the reservation information management means is notified of the switching information creation end, and the reservation information management means creates the switch control reservation information to the switch control reservation information management means. The switch control reservation information management means makes a switch control information by requesting the switch information management means to search for the SW control terminal address, and then performs switch control to the reservation information management means. When the reservation processing is notified by terminating the reservation information creation, and the switch control reservation information managing means confirms that the use start time of the switch control reservation information matches the current time, each of the switch control reservation information is confirmed. Transmits the switch control information to each switch control terminal, and performs remote control such as line setting and line holding according to the switch control information. ATMPVC network line configuration wherein the Ukoto.