JPH1198170A - Remote access router - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a communication condition of the remote access router or the like at its installation without a dam terminal. SOLUTION: The remote access router 2A (2B) that controls communication between a local area network LAN terminal 4A (4B) and a communication network 1 or a communication channel to control communication among LAN terminals at remote places is provided with an operation panel 29 equipped with an operation key 43, a display device 41 and a light emitting diode 42. The operation panel 29 is used to set a required minimum communication condition to activate the remote access routers 2A, 2B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a remote access router for controlling communication between a LAN (local area network) and a remote LAN connected via a communication network or a communication line.

[0002]

2. Description of the Related Art Communication condition setting in a remote access router includes system information, WAN-side port information (ISDN information,
It needs to be performed for several tens of items including PPP information), LAN-side port information (routing information, filtering information), etc., and is complicated and requires specialized knowledge. This setting is performed by connecting a so-called dumb terminal that does not have information processing capability to the remote access router, and a system administrator with specialized knowledge operates the dumb terminal keys to display the settings on the dumb terminal display. A method of displaying the information, starting the setting of those setting items, starting communication confirmation, and referring to failure information has been adopted.

[0003]

In recent years, personal computers (PCs) and the Internet have become widespread, and these have been used in ordinary households.
In addition, small office, home office (SOHO)
With the progress of office environments such as this, there has emerged a usage form in which a LAN having a simple network configuration such as a small LAN or a home LAN is constructed, and a remote access router is connected to the LAN to connect to the Internet. .

However, conventionally, a dumb terminal is always required when a remote access router is installed. Even when a remote access router is used with a simple network configuration, expertise in LAN is cultivated and the dumb terminal is used to establish a remote access router. Since it is necessary to set communication conditions, a large amount of labor is required to construct a small-scale LAN or a home LAN.

The present invention has been made to solve such a conventional problem. Operation keys for setting communication conditions, starting communication confirmation, and referring to fault information in the remote access router itself. By installing a remote access router in a simple network configuration by installing a remote terminal and a display unit, it is possible to set communication conditions, activate communication confirmation, and view fault information without using a dumb terminal. The purpose is to be.

[0006]

According to the present invention, a first LAN is provided.
An operation panel provided with operation keys and a display, which is inserted between the remote access router and a communication line, and controls communication with a remote second LAN via the communication line; A storage device for storing the communication operation conditions stored therein, and a communication control device for controlling LAN communication based on the communication operation conditions stored in the storage device. LAN side IP address, communication line side IP address,
A communication operation condition including the communication line type and a type of the communication line, and storing the setting contents of the communication operation condition set by the operation panel in the storage device.

[0007] According to the present invention, the communication conditions in the remote access router can be set by the operation keys and the display provided on the remote access router itself, and the dumb terminal is not required when the remote access router is installed.

[0008]

FIG. 1 is a block diagram of a LAN system using a remote access router according to the present invention. In this LAN system, one remote access router 2A is connected to a communication network 1 such as ISDN, and one LAN 3A is connected via the remote access router 2A, and a plurality of LAN terminals 4A are connected to the LAN 3A. Configuration.

[0009] Similarly, the communication network 1
Is connected to the other remote access router 2B, the other LAN 3B is connected via the remote access router 2B, and a plurality of LAs are connected to the LAN 3B.
The configuration is such that N terminals 4B are connected.

Then, for example, the remote access router 2
A sets a communication path with the remote access router 2B via the communication network 1 and controls communication between the LAN terminal 4A and the remote LAN terminal 4B. In addition,
The remote access routers 2A and 2B are generally LAN
It is configured to enable setting of communication conditions such as path selection information in order to select a path to transmit data transmitted from a plurality of LAN terminals 4A and 4B connected to 3A and 3B. I have.

FIG. 2 is a block diagram of the remote access routers 2A and 2B according to the present invention.
LAN control unit 21 for performing communication via 3B, main control unit 22 for controlling the entire remote access router 2, program memory 23 for storing control programs for remote access routers 2A and 2B, information necessary for control including data 24, a dumb terminal control unit 25 that controls a dumb terminal 5 that sets communication conditions such as path selection information of the remote access routers 2A and 2B, and controls communication with the communication network 1. A line control unit 26, a panel control unit 27 for controlling operation keys and a display, and a communication condition storage unit 28 for storing communication conditions set from the dam terminal 5 and the like;
These are connected to each other via a bus 28.

FIG. 3 shows a panel control unit 27 and an operation panel 2.
9 is a functional block diagram showing the relationship with No. 9. The panel control unit 27 includes a bus interface 31, an LCD (liquid crystal display) controller 32, an LED (light emitting diode) driver 33, and a key interrupt circuit. The operation panel 29 includes an LCD 41, a light emitting diode 42, and keys 43.

The bus interface 31 includes a display content from the bus 28 to the LCD 41 of the operation panel 29 and an LED 42.
, And drives the LCD controller 32 and the LED driver 33 to drive the LCD 41 and the LED
42.

When the key 43 is pressed, a key interrupt is generated from the key interrupt circuit 34 to the main control unit 22. The main controller 22 receives information on which key has been pressed from the key interrupt circuit 34 via the bus interface 31.

FIG. 4 is a front view showing an example of the operation panel 29, showing an example of the arrangement of the LCD 41, the LEDs 42, and the keys 43. LED42 is Tx42a, Rx42b, LI
NK42c, WAN42d, and ANLG42e.
The keys 43 include a MODE key 43a, a left cursor key 43b, a right cursor key 43c, a downward cursor key 43d, a SET key 43e, and a RUN key 43f.

FIG. 5 is a diagram showing an outline of communication conditions set in the remote access routers 2A and 2B of the present invention. A communication condition A100 includes system information setting items and WA.
It is composed of N-side port setting items, LAN-side port setting items, and other setting items (not shown). The system information setting item sets system information setting A200 for setting basic information of the system, and the WAN-side port setting item sets ISDN information setting A3.
00 and the telephone line side detailed information including PPP (point-to-point protocol) information setting A301, and also includes LAN-side port information setting, IP routing information A400, and IP filtering information A401. This is for setting detailed information on the LAN side.

The system information setting A200, the ISDN information setting A300, and the PPP information A shown in FIG.
301, IP routing information A400, and IP filtering information A401 are stored in the remote access router 2
When A and 2B are used in the Internet protocol (IP), they are the minimum necessary information. Hereinafter, the specific setting information will be described.

FIG. 6 is a diagram showing the setting contents of the system information A 200, which shows a state displayed on the dam terminal 5. In FIG. 6, "Name",
“Contact” and “Location” are areas for setting the device name, contact information, the installation location of the device, and the like.
“Equipment” 61 is an area for setting the function of the device, “WAN Type” 62 is an area for setting the type of the telephone line, and “LANIP Address” 63
Is an area for setting the IP address on the LAN side, "LAN
The “Subnet Mask” 64 is an area for setting a subnet mask on the LAN side, “WAN IP Adde”.
“rss” 65 is an area for setting an IP address on the telephone line side, and “WAN Subnet Mask” 66 is an area for setting a subnet mask on the telephone line side.

"TEL" means that the telephone line side is ISD
An area to be set at the time of N-line switching and an area to set the telephone number of the own device, “Sub Address” is:
An area to be set when the telephone line side is ISDN circuit-switched, and an area to set a sub-address of the telephone number of the own apparatus (set when a sub-address is required), "Inacti
vitality Watch Dog Timer (Se
c) "is an area set when the function of forcibly disconnecting the telephone line when there is no communication is used while the telephone line is connected. An area for setting a threshold value of a timer (no-communication time) from when the telephone line is disconnected until the telephone line is disconnected, and “Invali
d Observation Timer (Hou
r) "is an area set when a function for forcibly disconnecting a telephone line is used when communication (telephone connection) has continued for a predetermined time or more, and the communication state is monitored for a long time. This is an area for setting a threshold value of a timer (communication continuation time) from when the telephone line is connected to when the telephone line is disconnected.

The setting contents shown are default contents preset in the communication condition storage unit 28 of the apparatus. In this case, the function of the apparatus is "IP router" and the type of the telephone line is "ISDN circuit switching", LAN side I
The P address is “192.0.3.200”, the subnet mask on the LAN side is “255.255.255.0”,
The IP address on the telephone line side is "192.0.2.20
0 ", the threshold value of the no-communication time is set to" 180 seconds ", and the long-time communication monitoring time is set to" 12 hours ".

FIG. 7 is a diagram showing the setting contents of the ISDN information A 300, which shows a state displayed on the dam terminal 5. In FIG. 7, “ISDN” is a setting area used when using a normal ISDN connection such as circuit switching, and “HSD” is a setting area used when connecting to a digital leased line. In the “ISDN” setting area, “Call type” is an area for setting a B channel subscription mode, “TEI” is an area for setting a TEI value assigned to a terminal at the time of ISDN communication, and “Speed (Kbps)”. Is an area for setting the line speed.

In the "HSD" setting area, "S
speed (Kbps) "is an area for setting the line speed,
And "Ch Select" are areas for setting the B channel used for communication.

The setting contents shown are default contents set in advance in the communication condition storage unit 28 of the apparatus. In this case, when a normal ISDN connection such as circuit switching is used, B The channel subscription form is "Gener
al Bch (arbitrary class) ”and the TEI value is“ AUTO
(Automatic setting) "and the line speed are set to" 64 Kbps ". When a digital leased line connection is used, the line speed is" 64 Kbps "and the B channel used for communication is" 64 Kbps ". B1ch ".

FIG. 8 is a diagram showing the setting contents of the PPP information A 301, which shows a state displayed on the dam terminal 5. In FIG. 8, “Source M
The “RU” is an area for setting the maximum unit length of the PPP negotiation information transmitted by the own device, “Destina”.
“tion MRU (Min)” is an area for setting the maximum receiving unit length of the partner device of the PPP negotiation information, and “RestartTimer (Sec)” is a PP.
An area for setting a retransmission timer for P control information, "MAX T
“erminate” is an area for setting the number of retries of the Terminate request packet, “MAX C
“configure” is an area for setting the number of retries of the configuration request packet, “MAX F
“airure” is an area for setting the number of retries for negative packet reception, “LQR n” is an area for setting a parameter for link quality judgment, “LQR k” is an area for setting a reference value for link quality judgment, "Authenticat
“Name” of “ion Protocol” is an area for setting the name of the own station when using the authentication protocol, and “Password” is an area for setting the password of the own station.

The setting contents shown are default contents set in advance in the communication condition storage unit 28 of the apparatus. In this case, the maximum unit length transmitted by the own apparatus is "1500", The maximum receiving unit length of
500 ", retransmission timer is" 3 seconds ", Terminate
Request packet retry count is "2", Con
The retry count of the figure request packet is "1
0 times ”and the number of retries for receiving the negative packet is“ 10
"Times", the parameter for link quality determination is set to "5", and the reference value for link quality determination is set to "1".

FIG. 9 is a diagram showing the setting contents of the IP routing information A 400, which shows a state displayed on the dam terminal 5. In FIG. 9, this IP
A plurality of routing information can be set, and each IP
In the routing information, “Status” is an area for setting the setting state of the routing table and validity / invalidity of the routing information, “Hop Cnt” is an area for setting the number of routers up to the partner network,
“Next Hop IP” is an area for setting an IP address of a router to be relayed next, and “Dest. IP” is
An area for setting a destination IP address, "TEL" 91,
An area to be set when the telephone line side is ISDN circuit switching, and an area to set the telephone number of the partner apparatus, "Sub
An “Address” 92 is an area set when the telephone line side performs ISDN line switching, an area for setting a sub-address of the telephone number of the partner apparatus (set when a sub-address is required), and “Authentication Pro”.
"tocol" is an area for setting the authentication protocol partner station information when the telephone line side is ISDN circuit switching, digital leased line, etc., and an area for setting the presence or absence and type of the authentication protocol. "User Name" is the partner station. Area to set the name of "User Password" and "User Password"
"d" is an area for setting the password of the partner station.

The setting contents shown are default contents preset in the communication condition storage unit 28 of the apparatus. In this case, the setting state of the routing table is “IP routing information valid”, The number of routers up to "2." and the destination IP address is "0.0." Which means that all IP addresses are passed.
0.0 ", indicating that" None (no authentication) "is set as the authentication protocol partner station information.

FIG. 10 shows the IP filtering information A40.
FIG. 3 is a diagram showing setting contents of No. 1, which shows a state displayed on the dam terminal 5. In FIG. 10, a plurality of pieces of this IP filtering information can be set, and in each piece of IP filtering information, "Item"
Is an area for setting whether or not to perform filtering and a filtering item. “Port No” is an area for setting when the filtering item is a port number, and an area for setting a port number to be filtered.
“col” is an area to be set when the filtering item is a protocol, and an area to set the number of a protocol to be filtered;
P "," Source Mask "," Dest. I "
"P" and "Dest. Mask" are areas to be set when the filtering item is an IP address, and these are sequentially the source IP address to be filtered,
An area for setting a mask value of a source IP address to be filtered, a destination IP address to be filtered, and a mask value of a destination IP address to be filtered. Further, “Effect” indicates the content (filtering or relay) of the filtering operation. This is the area to be set.

The setting contents shown in the figure are default contents preset in the communication condition storage unit 28 of the apparatus, and in this case, indicate that no filtering is set.

The communication conditions shown in FIG. 5 are the setting items as described above, but these indicate only a minimum necessary part. The other detailed setting items are well-known techniques in the router, and the description thereof is omitted here. The contents set by these setting items are stored in the area corresponding to each setting item in the communication condition storage unit 28 shown in FIG. 2, and are referred to at the time of LAN and WAN communication to perform desired routing. And the connection operation is performed.

Next, referring to the flowcharts shown in FIGS. 11 to 20 and the operation explanatory diagram shown in FIG. 21, a method of setting communication conditions by operating the panel of the remote access router, a display example thereof, and a start of communication confirmation The following describes a maintenance method such as referring to the error information and the failure information, and a display example thereof.

Although the communication conditions normally set at the dam terminal 5 have been described with reference to FIGS. 6 to 10, in the remote access routers 2A and 2B of the present invention, in order to operate the remote access routers 2A and 2B, "Equipme" shown in FIG.
nt "61," WAN Type "62," LANIP
Adders "63," LAN Subnet M "
Ask ”64,“ WAN IP Address ”6
5, and "WAN Subnet Mask"66;
"Speed (Kbps)" 7 for ISDN shown in FIG.
1, and “Speed (Kbps)” 72 for HSD
And “TEL” 91 and “Sub Add” shown in FIG.
"ress" 92 can be set from the operation panel 29.

FIG. 11 shows a remote access router 2A,
FIG. 9 is a flowchart showing a mode switching method by operating the operation panel 29 of 2B and a display example of the LCD 41 at that time. Normally, the remote access routers 2A and 2B display an operation status screen on the LCD 41 (Step S).
1).

When the MODE key 43a is pressed in this state (step S2), a communication condition setting screen is displayed on the LCD 41 (step S3). MODE key 43
When a is pressed (step S4), a maintenance screen is displayed on the LCD 41 (step S5). MODE key 43
When a is pressed (step S6), the original operation state screen is changed to L
It is displayed on the CD 41 (step S1).

FIGS. 12 and 13 are flowcharts showing a method of switching communication condition setting items by operating the operation panel 29 of the remote access routers 2A and 2B, and a display example of the LCD 41 at that time.

First, when the SET key 43e is pressed while the communication condition setting screen is displayed in step S3 (FIG. 11) described above (step S11), "WA" shown in FIG.
A line type selection screen corresponding to the setting item of "NTType" 62 is displayed on the LCD 41 (step S12). When the SET key 43e is further pressed (step S13), FIG.
The operation mode selection screen corresponding to the setting item of “Equipment” 61 shown in FIG. 6 is displayed on the LCD 41 (step S14), and when the SET key 43e is further pressed (step S15), “LAN IP Addresses” shown in FIG.
The screen for inputting the LAN-side IP address corresponding to the setting item of “s” 63 is displayed on the LCD 41 (step S16), and when the SET key 43e is pressed (step S17), the setting item of “LAN Subnet Mask” 64 shown in FIG. LCD screen for LAN IP mask corresponding to
41 is displayed (step S18). When the SET key 43e is pressed (step S19), "W" shown in FIG.
A WAN IP address screen corresponding to the setting item of “AN IP Address” 65 is displayed on the LCD 41 (step S20), and when the SET key 43e is pressed (step S21), the “WAN Subne” shown in FIG.
t Mask ”66 WAN side IP corresponding to the setting item
A mask input screen is displayed on LCD 41 (step S2).
2) When the SET key 43e is further pressed (step S2)
3) A destination telephone number input screen corresponding to the setting item of "TEL" 91 shown in FIG. 9 is displayed on the LCD 41 (step S24).

As described above, each time the SET key 43e is pressed, the setting screen is switched and displayed.
When 3e is pressed (step S25), a sub-address input screen (final condition screen) corresponding to the setting item of "Sub Address" 92 shown in FIG. 9 is displayed (step S26), and the SET key 43e is pressed (step S26). Step S
27), a setting completion message is displayed as a communication condition setting completion screen (step S28), and thereafter, the screen returns to the operation state screen again (step S1).

The destination telephone number input screen and the sub address input screen are displayed when the line type on the telephone line side is set to ISDN line switching, and these can be set. When the line type is set to frame relay, an input screen for setting the data link connection identifier and the authorized information rate is displayed, and these can be set. In addition, the line type on the telephone line side is set to a digital leased line (HSD) or the like, and it is necessary to set communication conditions on the telephone line side such as a destination telephone number, a subaddress, a data link connection identifier, and an authorized information speed. Those not present are configured so that such display is not performed.

FIG. 14 shows a remote access router 2A,
By setting communication conditions by operating the operation panel 29 of 2B,
FIG. 9 is a flowchart illustrating a method of selecting a line type and a display example of the LCD 41 at that time. First, when the line type selection screen (selection item 1) is displayed in step S12 (FIG. 12) described above and the down cursor key 43d is pressed (step S31), another line type selection screen (selection item) is pressed. 2) is displayed (step S32).

Hereinafter, similarly, the downward cursor key 43
Each time d is pressed, a screen for selecting another line type is displayed (steps S33 to S39). When the line type selection screen of the last selection item is displayed (step S40), when the downward cursor key 43d is pressed (step S41), the screen returns to the original state and is again displayed on the LCD 41 (selection item 1). Is displayed (step S12).

In this manner, "WAN T" shown in FIG.
line type corresponding to the setting item of “type” 62 is “ISDN circuit switching (64 Kbps)”, “ISD
N-line switching (128 Kbps) "," Digital leased line (64 Kbps) "," Digital leased line (128 Kbps)
s) "," Frame Relay (64 Kbps) "," Frame Relay (128 Kbps) "," OCN (64 Kbps) "
ps) "and" OCN (128 Kbps) ". Since the line speed is set in accordance with the setting of the line type, "Speed (Kbps)" 71 for ISDN or "S" for HSD shown in FIG.
A corresponding setting item such as “speed (Kbps)” 72 is set.

The remote access routers 2A and 2B
When the operation mode selection screen is displayed in the above-described step S14 (FIG. 12) in the setting of the communication condition by operating the operation panel 29, the downward cursor key 4 is similarly set.
Every time 3d is pressed, “Equipment” 6 shown in FIG.
"IP router", "bridge", and "IP router &bridge" as operation mode types corresponding to the setting item 1
Are displayed, and any of these can be selected and set.

FIG. 15 shows a remote access router 2A,
By setting communication conditions by operating the operation panel 29 of 2B,
Input method of LAN side IP address and LCD 4 at that time
FIG. 6 is a flowchart illustrating a display example of No. 1; In this example, the LAN-side IP address is set to “192.000.00
3.049 ”.

First, the aforementioned step S16 (FIG. 12)
LCD4 as the initial screen for inputting the LAN side IP address
"192.000.003.200" is displayed in 1,
It is assumed that the cursor is displayed at the head “1”. Here, the LAN-side IP address is set to “192.000.00
3.049 ”, use the right cursor key 43
When c is pressed nine times (step S51), the cursor moves to 1
The cursor is moved to “2” in the 0th digit (step S52), and the down cursor key 43d is pressed eight times (step S5).
3) The numerical value of the tenth digit changes from "2" to "0" (step S54).

Next, when the right cursor key 43c is pressed once (step S55), the cursor moves to "0" in the eleventh digit (step S56). Then, when the downward cursor key 43d is pressed four times (step S5).
7) The numerical value of the eleventh digit changes from "0" to "4" (step S58).

Next, when the right cursor key 43c is pressed once (step S59), the cursor moves to "0" of the twelfth digit (step S60). Then, when the downward cursor key 43d is pressed nine times (step S6).
1) The numerical value of the twelfth digit is changed from "0" to "9" (step S62).

This completes the input of all digits, and the LAN-side IP address corresponding to the setting item of “LAN IP Address” 63 shown in FIG. 6 is “192.000.00
3.049 ", and when the SET key 43e is pressed (step S63), a LAN-side IP mask input screen as a setting item of the next communication condition (step S18)
Is displayed on the LCD 41.

Further, the above-mentioned step S18 (FIG. 12)
Initial screen for inputting the LAN side IP mask in step S2
0 (FIG. 12), initial screen for inputting the IP mask on the WAN side,
In addition, on the initial screen for inputting the WAN-side IP mask in step S22 (FIG. 12), the same operation as the setting of the LAN-side IP address is performed so that these can be set. Therefore, by operating the operation panel 29, FIG.
"LAN Subnet Mask" 64, "W
AN IP Address 65 ”and“ WAN S
The setting items of the “ubnet Mask” 66 can be freely set.

FIG. 16 shows a remote access router 2A,
By setting communication conditions by operating the operation panel 29 of 2B,
It is a flowchart figure which shows the input method of a destination telephone number, and the example of a display of LCD41 at that time.

First, the aforementioned step S24 (FIG. 13)
When the telephone number is not set in the destination telephone number input screen, only the cursor "_" is displayed on the LCD 41. Here, when the downward cursor key 43d is pressed ten times (step S121), the numerical value at the cursor position becomes "0" (step S122).

Next, when the right cursor key 43c is depressed once (step S123), the cursor moves one position to the right, "0_" is displayed on the LCD 41, and a state for inputting the second digit is entered (step S123). Step S124). Then, when the downward cursor key 43d is pressed twice (step S125), the numerical value of the second digit becomes "2" (step S126).

Next, when the right cursor key 43c is pressed once (step S127), the cursor moves one position to the right, "02_" is displayed on the LCD 41, and a state for inputting the third digit is entered (step S127). Step S128). When the downward cursor key 43d is pressed four times (step S129), the third digit becomes "4" (step S130), and when the right cursor key 43c is pressed once (step S131), The cursor moves one position to the right, and the state of entering the fourth digit is entered.

Thereafter, similarly, when the input of all digits of the telephone number is completed (step S132), "TE" shown in FIG.
Since the destination telephone number corresponding to the setting item of "L" 91 has been set, pressing the SET key 43e (step S1)
33), a sub-address input screen (step S26) as a setting item of the next communication condition is displayed on the LCD 41.

The above-described step S26 (FIG. 13)
In the sub-address input screen of, the same operation as the setting of the destination telephone number is performed so that this can be set. Therefore, by operating the operation panel 29, FIG.
The setting items of “Sub Address” 92 shown in FIG.

As described above, the remote access routers 2A and 2B
The method of setting the communication conditions by operating the operation panel 29 described above has been described. However, the contents of each setting item set in this manner are the same as those set in the dumb terminal 5 in the communication condition storage unit shown in FIG. 28 are stored in areas corresponding to the respective setting items. Then, the communication condition set from the operation panel 29 and the communication condition
And the communication conditions stored in the remote access routers 2A and 2B are set. Note that the communication conditions set and stored in advance in the communication condition storage unit 28 as default values are simple routing for transmitting and receiving all packets to and from the WAN side, and since there is no filtering condition, advanced expertise is required. Remote access router 2 without having
A and 2B can be installed and operated.

In the present invention, the communication conditions necessary for operating the remote access routers 2A and 2B can be set on both the dumb terminal 5 and the operation panel 29. A storage area is provided in the communication condition storage unit 28 so as to store information (setting means information) indicating which one of the operation panel 29 and the operation panel 29 is used.

When the communication condition is set from the dam terminal 5, the communication condition is locked so that the communication condition cannot be set from the operation panel 29 thereafter. That is, after the advanced communication conditions are set from the dam terminal 5, the communication conditions are not rewritten on the operation panel 29, and the security of the LAN or WAN communication is improved.

FIG. 17 shows a remote access router 2A,
FIG. 9 is a flowchart illustrating a method of selecting a maintenance item by operating the 2B operation panel 29 and a display example of the LCD 41 at that time. First, in step S5 (FIG. 1)
When the maintenance screen is displayed on the LCD 41 in 1),
When the SET key 43e is pressed (step S71), the initial screen of the maintenance item selection screen is displayed on the LCD 41, and the first maintenance item is displayed on the lower part of the screen of the LCD 41 (step S72).

Next, when the downward cursor key 43d is pressed (step S73), the second maintenance item is displayed on the lower part of the screen of the LCD 41 (step S7).
4). Hereinafter, similarly, each time the downward cursor key 43d is pressed (step S75), the display of the maintenance item on the LCD 41 is switched, and the last maintenance item is displayed on the LCD 41 (step S76).
When the downward cursor key 43d is pressed (step S7)
7) Return to the maintenance screen display (step S5).

FIGS. 18 to 19 are diagrams showing an operation method for starting communication confirmation of maintenance items by operating the operation panel 29 of the remote access routers 2A and 2B, and a display example of the LCD 41 at that time. Here, IP
The case where the communication confirmation to the address “176.0000.5.0010” is activated is shown.

First, with the communication confirmation selection screen displayed on the LCD 41 (step S81), the SET key 4
When 3e is pressed (step S82), the communication confirmation partner I
The P address input screen is displayed on the LCD 41 and the LCD 4
The initial value "000.000.000.0
"00" is displayed, and a cursor is displayed at the first digit (step S83).

Here, when the downward cursor key 43d is pressed once (step S84), the first digit is set to "0".
From "1" to "1" (step S85). Next, when the right cursor key 43c is pressed once (step S
86), the cursor moves to the second digit (step S8)
7).

Here, when the downward cursor key 43d is pressed seven times (step S88), the numerical value of the second digit becomes "0".
To “7” (step S89). Hereinafter, similarly, the cursor is moved by pressing the right cursor key 43c, the numerical value is selected by pressing the down cursor key 43d, and the other party's IP address is input (steps S90 to S90).
101).

When the SET key 43e is pressed while the input of the partner IP address is completed (step S102),
Communication confirmation is started, and a so-called PING transmits the message to the destination of the partner IP address at a predetermined interval, and monitors a response from the partner. Then, the remote access routers 2A and 2B
Displays on the LCD 41 a display indicating that the communication check is being executed (step S103). At this time, the communication confirmation (transmission of the PING packet) is executed an infinite number of times in a fixed time.
In the lower part of the screen 1, the normal number of communication confirmations (the number of responses from the other party within a predetermined time after transmitting the PING packet) and the abnormal number of times (the other party did not respond within the predetermined time after transmitting the PING packet) Is displayed). When the communication confirmation is to be ended, the MODE key 43e is pressed (step S104), and the communication confirmation selection screen is displayed again on the screen of the LCD 41 (step S81).

As described above, the remote access router 2
A and 2B transmit the PING packet, and as shown in FIG.
As shown in (1), the line separation test can be performed accurately. That is, conventionally, in FIG. 21, the test content is LAN (PING (1) or PING (2)) as shown in FIG.
By inputting a PING command from the terminal, only communication is confirmed, and PING could not be transmitted from the remote access router as in PING (3). Therefore, when the LAN communication is not normally performed, it is not possible to clearly perform the communication confirmation by the PING packet to be performed. According to the present invention, the PING packet can be transmitted from the remote access router itself by operating the operation panel 29. By combining the PING packet with the self-diagnosis function, the line separation test can be performed accurately. become.

Since communication confirmation (transmission of a PING packet) can be performed by operating the operation panel 29, the remote access router 2 can be connected without connecting a dumb terminal.
Installation of A and 2B (LAN construction) can be performed easily in a short time.

FIG. 20 is a diagram showing a method of referring to fault information of a maintenance item by operating a panel and a display example of the LCD 41 at that time. Step S74 described above (FIG. 17)
When the SET key 43e is pressed while the failure information reference selection screen is displayed on the LCD 41 (step S11).
1) The latest failure information code that has been collected is displayed on the LCD 41 together with the time at which it was collected (step S11).
2).

Here, when the downward cursor key 43d is pressed once (step S113), the second failure information code is displayed on the LCD 41 together with the time at which it was collected (step S114). Hereinafter, similarly, each time the downward cursor key 43d is pressed, up to 256 failure information items are displayed on the LCD 41 in order from the newest failure information items together with the time at which the information items were collected (steps S115 to S11).
7).

With the oldest collected fault information displayed (step S118), the down cursor key 43d is displayed.
Is pressed (step S119), a failure information reference selection screen is displayed on the LCD 41 again (step S7).
4).

In this embodiment, the remote access routers 2A and 2B have been described as the same device. However, even if one of the remote access router 2A and the remote access router 2B is another type of device, communication is possible. If the conditions (protocols, etc.) are met, LA will be no problem.
N communications can be performed.

[0071]

According to the present invention, by providing the remote access router with the operation keys and the display, the minimum communication condition required for operating the remote access router when the remote access router is installed is set. In addition, activation of communication confirmation and confirmation of failure information can be performed without a dumb terminal, and even users without advanced expertise can easily install remote access routers. .

[Brief description of the drawings]

FIG. 1 is a block diagram of a LAN system using a remote access router according to the present invention.

FIG. 2 is a block diagram of a remote access router according to the present invention.

FIG. 3 is a functional block diagram showing a relationship between a panel control unit and an operation panel of the remote access router according to the present invention.

FIG. 4 is a front view showing an operation panel of the remote access router according to the present invention.

FIG. 5 is a diagram showing communication condition setting contents of the remote access router according to the present invention.

FIG. 6 is a diagram showing system information setting contents among communication condition setting contents.

FIG. 7 is a diagram showing ISDN information setting contents of communication condition setting contents.

FIG. 8 is a diagram showing PPP information setting contents of communication condition setting contents.

FIG. 9 is a diagram showing IP routing information setting content of communication condition setting content.

FIG. 10 is a diagram showing IP filtering information setting content of communication condition setting content.

FIG. 11 is a flowchart showing a method of switching the panel operation mode of the remote access router according to the present invention and a display example of the LCD at that time.

FIG. 12 is a flowchart showing a method of switching communication condition setting items by operating a panel of a remote access router according to the present invention and a display example of an LCD at that time (1/1).
2).

FIG. 13 is a flowchart showing an example of a method of switching communication condition setting items by operating a panel of a remote access router according to the present invention and a display example of an LCD at that time (2 /
2).

FIG. 14 is a flowchart showing a method of selecting a line type and a display example of an LCD at that time in setting communication conditions by panel operation of the remote access router according to the present invention.

FIG. 15 is a flowchart illustrating a method of inputting a LAN-side IP address and a display example of an LCD at the time of setting communication conditions by operating a panel of the remote access router according to the present invention.

FIG. 16 is a flowchart showing a method of inputting a destination telephone number on a communication line side and a display example of an LCD at the time of setting communication conditions by a panel operation of the remote access router according to the present invention.

FIG. 17 is a flowchart showing a method of selecting a maintenance item by operating the panel of the remote access router according to the present invention, and a display example of the LCD at that time.

FIG. 18 is a flowchart (1/2) showing an operation method for starting communication confirmation of a maintenance item by a panel operation of the remote access router according to the present invention and a display example of the LCD at that time.

FIG. 19 is a flowchart (2/2) showing an operation method for starting communication confirmation and a display example of the LCD at that time following the continuation of FIG. 10;

FIG. 20 is a method of referring to fault information of a maintenance item of a remote access router by operating a panel and LC at that time.
It is a flowchart figure which shows the example of a display of D.

FIG. 21 is a diagram illustrating an operation state in confirming communication of a maintenance item by a panel operation of the remote access router according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication network 2 Remote access router 3 LAN 4 LAN terminal 5 Dumb terminal 21 LAN control unit 22 Main control unit 23 Program memory 24 Work memory 25 Dumb terminal control unit 26 Line control unit 27 Panel control unit 29 Operation panel 30 Bus 31 Bus interface 32 LCD controller 33 LED driver 34 key interrupt circuit 41 LCD 42 LED 43 key

Claims (1)

[Claims] 1. An operation key and a display device, which are inserted between a first LAN and a communication line and which control communication between the first LAN and a remote second LAN via the communication line. An operation panel comprising: a storage device for storing communication operation conditions set in advance; and a communication control device for controlling LAN communication based on the communication operation conditions stored in the storage device. A communication operation condition including at least the first LAN-side IP address, the communication line-side IP address, and the type of the communication line is set by a panel, and the setting contents of the communication operation condition set by the operation panel Remote access router, characterized by comprising means for storing in the storage device.