JP3693475B2 - Remote access router - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a remote access router that controls communication between a LAN (local area network) and a remote LAN connected via a communication network or a communication line.
[0002]
[Prior art]
Communication conditions are set in the remote access router as shown in the communication condition setting contents configuration diagram of FIG. 5, such as system information, WAN side port information (ISDN information, PPP information), LAN side port information (routing information, filtering information), etc. It is necessary to carry out over several dozen items including, and is complicated and requires specialized knowledge. In this setting, a so-called dumb terminal that does not have information processing capability is connected to the remote access router, and a system administrator with expert knowledge can set the setting contents on the display of the dumb terminal by operating the keys of the dumb terminal. A method has been adopted in which these are displayed, settings for these setting items, communication confirmation activation, failure information reference, and the like are performed.
[0003]
[Problems to be solved by the invention]
By the way, in recent years, personal computers (PCs) and the Internet have become widespread, and these have come to be used in ordinary homes. Also, as office environments such as small offices and home offices (SOHO) have progressed, the scale has been reduced. A use form in which a LAN having a simple network configuration such as a simple LAN or a home LAN is constructed and a remote access router is connected to the LAN to connect to the Internet has appeared.
[0004]
Conventionally, however, a dumb terminal is always required when installing a remote access router, and even if it is used in a simple network configuration, the dumb terminal cultivates expertise on the LAN and establishes communication conditions for the remote access router. Therefore, a great amount of labor is required to construct a small-scale LAN or a home LAN.
[0005]
The present invention has been made in order to solve such a conventional problem, and an operation key and a display for setting communication conditions, starting communication confirmation, referring to failure information, etc. in the remote access router itself. When installing a remote access router in a simple network configuration, the communication conditions can be set, communication check can be started, and failure information can be referenced without using a dumb terminal. For the purpose.
[0006]
[Means for Solving the Problems]
The present invention is inserted between the first LAN and the communication line, and through this communication line First Communication between two LANs Based on the set communication operating conditions Remote access router to control Because An operation panel including operation keys and a display; A dam terminal control unit capable of accommodating a communication operation condition setting terminal; A storage device for storing the set communication operation conditions; The Memory Dress A communication control device for controlling LAN communication based on communication operation conditions stored in the device. In the remote access router, the communication operation condition includes a first communication operation condition that can be set only from a communication operation condition setting terminal connected to the dumb terminal control unit, the communication operation condition setting terminal, and the operation. At least the type of the communication line that can be set from both of the panels, The first LAN side IP address, The first LAN side subnet mask; The communication line side IP address and the communication line Configured with the second communication operating condition including the side subnet mask And The first communication operation condition and the second communication operation condition set from the communication operation condition setting terminal The storage device What Remember Second setting for storing in the storage device the second communication operation condition set by the operation panel based on a combination of the first setting means and the display state of the display and the operation of the operation key Means It is characterized by that.
[0007]
According to the present invention, the communication conditions in the remote access router can be set by the operation key and the display device provided in the remote access router itself, and the dumb terminal is not required when installing the remote access router.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
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, one LAN 3A is connected via the remote access router 2A, and a plurality of LAN terminals 4A are connected to the LAN 3A. It becomes the composition.
[0009]
Similarly, the other remote access router 2B is connected to the communication network 1, the other LAN 3B is connected via the remote access router 2B, and a plurality of LAN terminals 4B are connected to the LAN 3B. It becomes the composition.
[0010]
For example, the remote access router 2A sets a communication path with the remote access router 2B via the communication network 1 to control communication between the LAN terminal 4A and the LAN terminal 4B at a remote location. The remote access routers 2A and 2B generally select route information such as route selection information in order to select a route where data transmitted from a plurality of LAN terminals 4A and 4B connected to the LAN 3A and 3B is transmitted. The communication condition can be set.
[0011]
FIG. 2 is a block diagram of the remote access routers 2A and 2B according to the present invention. The LAN control unit 21 performs communication via the LANs 3A and 3B, the main control unit 22 controls the entire remote access router 2, and the remote access. Program memory 23 for storing control programs for routers 2A and 2B, work memory 24 for temporarily storing data and other information necessary for control, setting of communication conditions such as route selection information for remote access routers 2A and 2B, etc. Set from the dam terminal control unit 25 for controlling the dam terminal 5 to be performed, the line control unit 26 for controlling communication to the communication network 1, the panel control unit 27 for controlling the operation keys and the display, the dam terminal 5 and the like. The communication condition storage unit 28 stores communication conditions, and these are connected to each other via the bus 28. It is connected.
[0012]
FIG. 3 is a functional block diagram showing the relationship between the panel control unit 27 and the operation panel 29. 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 34. The operation panel 29 includes an LCD 41, a light emitting diode 42, and a key 43.
[0013]
The bus interface 31 receives display contents on the LCD 41 of the operation panel 29 and lighting information of the LED 42 from the bus 28 and drives the LCD controller 32 and the LED driver 33 to control the LCD 41 and the LED 42.
[0014]
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 control unit 22 receives information about which key is pressed from the key interrupt circuit 34 via the bus interface 31.
[0015]
FIG. 4 is a surface view showing an example of the operation panel 29 and shows an arrangement example of the LCD 41, the LED 42, and the key 43. The LED 42 includes Tx42a, Rx42b, LINK42c, WAN42d, and ANLG42e. The key 43 includes 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.
[0016]
FIG. 5 is a diagram showing an outline of communication conditions set in the remote access routers 2A and 2B of the present invention. The communication condition A100 includes system information setting items, WAN side port setting items, LAN side port setting items, and It consists of 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 includes ISDN information setting A300 and PPP (point-to-point protocol) information setting. Detailed information on the telephone line side including A301 is set. Similarly, detailed information on the LAN side including LAN side port information setting, IP routing information A400, and IP filtering information A401 is set.
[0017]
Note that the system information setting A200, ISDN information setting A300, PPP information A301, IP routing information A400, and IP filtering information A401 shown in FIG. 5 use the remote access routers 2A and 2B with the Internet protocol (IP). The specific setting information will be described below.
[0018]
FIG. 6 is a diagram showing the setting contents of the system information A 200, which shows the state displayed on the dam terminal 5. In FIG. 6, “Name”, “Contact”, and “Location” are areas for setting the apparatus name, contact information, apparatus installation location, etc., “Equipment” 61 is an area for setting the functions of the apparatus, “WAN” “Type” 62 is an area for setting a type on the telephone line side, “LANIP Address” 63 is an area for setting an IP address on the LAN side, “LAN Subnet Mask” 64 is an area for setting a subnet mask on the LAN side, “WAN IP Address” 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.
[0019]
“TEL” is an area set when the telephone line side is ISDN line exchange, and is an area where the telephone number of the own device is set, and “Sub Address” is an area set when the telephone line side is ISDN line exchange. An area for setting the subaddress of the telephone number of the own device (set when the subaddress is necessary), “Inactivity Watch Dog Timer (Sec)” is a state where the telephone line is connected and the telephone line is not connected. This is an area that is set when the function for forcibly disconnecting is used, monitoring the no-communication state, and the threshold of the timer (no-communication time) from when the no-communication state is reached until the telephone line is disconnected , And “Invalid Observation Timer (Hour)”, communication (telephone connection) continues for a predetermined time or longer. This is an area that is set when the function for forcibly disconnecting the telephone line is used, and monitoring the communication status for a long period of time, and the timer from disconnecting the telephone line to disconnecting the telephone line This is an area for setting a threshold of (communication duration).
[0020]
The set contents shown are default contents preset in the communication condition storage unit 28 of the device. In this case, the function of the device is “IP router”, and the type on the telephone line side is “ISDN line”. Exchange ”, the IP address on the LAN side is“ 192.0.3.200 ”, the subnet mask on the LAN side is“ 255.255.255.0 ”, and the IP address on the telephone line side is“ 192.0.2.200 ”. ”, The no-communication time threshold is set to“ 180 seconds ”, and the long-time communication monitoring time is set to“ 12 hours ”.
[0021]
FIG. 7 is a diagram showing the setting contents of the ISDN information A300, which shows a state displayed on the dam terminal 5. In FIG. 7, “ISDN” is a setting area used when a normal ISDN connection such as circuit switching is used, and “HSD” is a setting area used when a digital dedicated line is connected. 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 during ISDN communication, and “Speed (Kbps)”. Is an area for setting the line speed.
[0022]
In the “HSD” setting area, “Speed (Kbps)” is an area for setting a line speed, and “Ch Select” is an area for setting a B channel used for communication.
[0023]
The setting contents shown in the figure are default contents preset in the communication condition storage unit 28 of the apparatus. In this case, when using a normal ISDN connection such as circuit switching, the B channel subscription is performed. The form is “General Bch (arbitrary class)”, the TEI value is “AUTO (automatic setting)”, and the line speed is set to “64 Kbps”. Also, when using a digital leased line connection, This indicates that the line speed is set to “64 Kbps” and the B channel used for communication is set to “B1ch”.
[0024]
FIG. 8 is a diagram showing the setting contents of the PPP information A 301, which shows the state displayed on the dam terminal 5. In FIG. 8, “Source MRU” is an area for setting the maximum unit length transmitted by the own apparatus of PPP negotiation information, and “Destination MRU (Min)” sets the maximum receiving unit length of the counterpart apparatus for PPP negotiation information. The area, “RestartTimer (Sec)” is an area for setting a retransmission timer for PPP control information, “MAX Terminate” is an area for setting the number of times to retry a Terminate request packet, and “MAX Configure” is the number of times to retry a Configure request packet. "MAX Failure" is an area for setting the number of retries in negative packet reception, "LQR n" is an area for setting a parameter for determining link quality, and "LQR k" is a link An area for setting a reference value for quality judgment, “Name” of “Authentication Protocol” is an area for setting the name of the local station when using the authentication protocol, and “Password” is an area for setting the password of the local station. is there.
[0025]
The set contents shown in the figure are default contents preset in the communication condition storage unit 28 of the apparatus. In this case, the maximum unit length transmitted by the own apparatus is “1500” and the maximum reception of the partner apparatus. The unit length is “1500”, the retransmission timer is “3 seconds”, the number of retries for the Terminate request packet is “2 times”, the number of retries for the Configure request packet is “10 times”, and the number of retries for receiving a negative packet is “10 times”. ", The parameter of link quality determination is set to" 5 ", and the reference value of link quality determination is set to" 1 ".
[0026]
FIG. 9 is a diagram showing the setting contents of the IP routing information A 400, which shows the state displayed on the dam terminal 5. In FIG. 9, a plurality of IP routing information can be set. In each IP routing information, “Status” is a setting state of the routing table and an area for setting valid / invalid of routing information, and “Hop Cnt” is , An area for setting the number of routers up to the partner network, “Next Hop IP” is an area for setting the IP address of the next relay router, “Dest. IP” is an area for setting the destination IP address, “ “TEL” 91 is an area that is set when the telephone line side is ISDN line exchange, and is an area that sets the telephone number of the partner device, and “Sub Address” 92 is an area that is set when the telephone line side is ISDN line exchange. Area for setting the subaddress of the telephone number of the partner device (if a subaddress is required) "Authentication Protocol" is an area for setting authentication protocol partner station information when the telephone line side is ISDN line exchange, digital leased line, etc., and is an area for setting the presence / absence and type of authentication protocol, “User Name” is an area for setting the name of the partner station, and “User Password” is an area for setting the password of the partner station.
[0027]
The setting contents shown in the figure are the default contents set in advance in the communication condition storage unit 28 of the device. In this case, the setting state of the routing table is “IP routing information valid”, up to the partner network. The number of routers is set to “2”, the destination IP address is set to “0.0.0.0” which means that all IP addresses are passed, and the authentication protocol partner station information is set to “None (not authenticated)”. It shows that.
[0028]
FIG. 10 is a diagram showing the setting contents of the IP filtering information A 401, which shows a state displayed on the dam terminal 5. In FIG. 10, a plurality of IP filtering information can be set. In each IP filtering information, “Item” indicates the presence / absence of filtering and a filtering item setting area, and “Port No” indicates that the filtering item is a port number. Is an area that is set when the filtering item is a protocol, an area that is set when the filtering item is a protocol, and an area that sets the number of the protocol to be filtered. “Match IP”, “Source Mask”, “Dest. IP”, and “Dest. Mask” are areas to be set when the filtering item is an IP address. This is an area for setting the mask value of the source IP address to be filtered, the destination IP address to be filtered, and the mask value of the destination IP address to be filtered, and “Effect” is the content of filtering operation (filtering or relaying) This is the area to set.
[0029]
The setting contents shown in the figure are the default contents set in advance in the communication condition storage unit 28 of the apparatus, and in this case, the setting contents are set not to be filtered at all.
[0030]
The communication conditions shown in FIG. 5 are the setting items as described above, but this shows only a minimum necessary part. Since other detailed setting items are well-known techniques in the router, their description is omitted here. Further, the contents set by these setting items are stored in areas corresponding to the setting items of the communication condition storage unit 28 shown in FIG. 2, and these are referred to during LAN and WAN communication to obtain a desired routing. And connection operation is performed.
[0031]
Next, referring to the flowcharts shown in FIGS. 11 to 20 and the operation explanatory diagrams shown in FIG. 21, the communication condition setting method and its display example by the panel operation of the remote access router, the activation and failure information of the communication confirmation A maintenance method such as reference and a display example thereof will be described.
[0032]
The communication conditions normally set in the dumb terminal 5 have been described with reference to FIGS. 6 to 10. However, the remote access routers 2A and 2B according to the present invention are the minimum for operating the remote access routers 2A and 2B. 6 are “Equipment” 61, “WAN Type” 62, “LAN IP Address” 63, “LAN Subnet Mask” 64, “WAN IP Address” 65, and “WAN Sub Mask” 66 shown in FIG. The “Speed (Kbps)” 71 for ISDN and the “Speed (Kbps)” 72 for HSD shown in FIG. 7, the “TEL” 91 and the “Sub Address” 92 shown in FIG. It can be set from
[0033]
FIG. 11 is a flowchart showing a mode switching method 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. The remote access routers 2A and 2B normally display an operation state screen on the LCD 41 (step S1).
[0034]
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). When the MODE key 43a is further pressed (step S4), a maintenance screen is displayed on the LCD 41 (step S5). When the MODE key 43a is further pressed (step S6), the original operation state screen is displayed on the LCD 41 (step S1).
[0035]
12 and 13 are flowcharts showing a method for switching setting items of communication conditions 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.
[0036]
First, when the communication condition setting screen is displayed in step S3 (FIG. 11) described above, when the SET key 43e is pressed (step S11), the line corresponding to the setting item of “WAN Type” 62 shown in FIG. A type selection screen is displayed on the LCD 41 (step S12). When the SET key 43e is further pressed (step S13), an 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). ), A LAN side IP address input screen corresponding to the setting item of “LAN IP Address” 63 shown in FIG. 6 is displayed on the LCD 41 (step S16), and when the SET key 43e is further pressed (step S17), the screen shown in FIG. A LAN side IP mask input screen corresponding to the setting item of “LAN Subnet Mask” 64 is displayed on LCD 41 (step S18). When the SET key 43e is pressed (step S19), a WAN-side IP address screen corresponding to the setting item “WAN IP Address” 65 shown in FIG. 6 is displayed on the LCD 41 (step S20), and the SET key 43e is further pressed. (Step S21), a WAN side IP mask input screen corresponding to the setting item of “WAN Subnet Mask” 66 shown in FIG. 6 is displayed on the LCD 41 (Step S22), and when the SET key 43e is further pressed (Step S23), A destination telephone number input screen corresponding to the setting item of “TEL” 91 shown in FIG. 9 is displayed on LCD 41 (step S24).
[0037]
Thus, each time the SET key 43e is pressed, the setting screen is switched and displayed. When the SET key 43e is further pressed (step S25), the subaddress corresponding to the setting item of “Sub Address” 92 shown in FIG. When the input screen (final condition screen) is displayed (step S26) and the SET key 43e is pressed (step S27), a setting end message is displayed as a communication condition setting end screen (step S28), and then the operation state screen is displayed again. (Step S1).
[0038]
The destination telephone number input screen and the subaddress input screen are displayed when the line type on the telephone line side is set to ISDN line exchange, and can be set. The line type on the telephone line side is When the frame relay is set, 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 digital leased line (HSD), etc., and it is necessary to set communication conditions on the telephone line side such as the destination telephone number, subaddress, data link connection identifier, and authorized information rate. Those not present are configured not to display such information.
[0039]
FIG. 14 is a flowchart showing a method for selecting a line type and a display example on the LCD 41 at the time of setting communication conditions by operating the operation panel 29 of the remote access routers 2A and 2B. First, when the line type selection screen (selection item 1) is displayed in step S12 (FIG. 12) described above, when the down cursor key 43d is pressed (step S31), another line type selection screen (selection item) is displayed. 2) is displayed (step S32).
[0040]
Similarly, every time the down cursor key 43d is pressed, a selection screen for another line type is displayed (steps S33 to S39). When the line type selection screen of the final selection item is displayed (step S40), if the down cursor key 43d is pressed (step S41), the screen returns to the original and the line type selection screen (selection item 1) is again displayed on the LCD 41. Is displayed (step S12).
[0041]
In this way, the line types on the telephone line side corresponding to the setting item of “WAN Type” 62 shown in FIG. 6 are “ISDN line exchange (64 Kbps)”, “ISDN line exchange (128 Kbps)”, “digital leased line ( 64 Kbps), “Digital leased line (128 Kbps)”, “Frame relay (64 Kbps)”, “Frame relay (128 Kbps)”, “OCN (64 Kbps)”, and “OCN (128 Kbps)”. . In addition, since the line speed is set according to the setting of the line type, corresponding setting items such as “Speed (Kbps)” 71 for ISDN or “Speed (Kbps)” 72 for HSD shown in FIG. Will be set.
[0042]
Similarly, when the communication condition is set by operating the operation panel 29 of the remote access routers 2A and 2B and the operation mode selection screen is displayed in step S14 (FIG. 12), the down cursor key 43d is similarly displayed. Each time is pressed, “IP router”, “bridge”, and “IP router & bridge”, which are the operation mode types corresponding to the setting items of “Equipment” 61 shown in FIG. can do.
[0043]
FIG. 15 is a flowchart showing a LAN IP address input method and a display example on the LCD 41 at the time of setting communication conditions by operating the operation panel 29 of the remote access routers 2A and 2B. In this example, the LAN side IP address is set to “192.000.003.049”.
[0044]
First, it is assumed that “192.000.003.200” is displayed on the LCD 41 and the cursor is displayed at the top “1” as the initial input screen of the LAN side IP address in step S16 (FIG. 12). Here, in order to change the IP address on the LAN side to “192.000.003.049”, when the right cursor key 43c is pressed nine times (step S51), the cursor moves to “2” in the tenth digit. (Step S52) When the down cursor key 43d is pressed eight times (Step S53), the numerical value of the tenth digit is changed from “2” to “0” (Step S54).
[0045]
Next, when the right cursor key 43c is pressed once (step S55), the cursor moves to “0” in the eleventh digit (step S56). When the down cursor key 43d is pressed four times (step S57), the value of the eleventh digit is changed from “0” to “4” (step S58).
[0046]
Next, when the right cursor key 43c is pressed once (step S59), the cursor moves to “0” in the 12th digit (step S60). When the down cursor key 43d is pressed nine times (step S61), the numerical value of the 12th digit is changed from “0” to “9” (step S62).
[0047]
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 set to “192.000.003.049”. When pressed (step S63), a LAN side IP mask input screen (step S18) which is a setting item of the next communication condition is displayed on the LCD 41.
[0048]
In addition, the LAN side IP mask input initial screen in step S18 (FIG. 12), the WAN side IP mask input initial screen in step S20 (FIG. 12), and the WAN side IP mask in step S22 (FIG. 12). On the initial mask input screen, these can be set by performing the same operation as the LAN-side IP address setting. Therefore, by operating the operation panel 29, the setting items of “LAN Subnet Mask” 64, “WAN IP Address” 65, and “WAN Subnet Mask” 66 shown in FIG. 6 can be freely set.
[0049]
FIG. 16 is a flowchart showing a destination telephone number input method and a display example on the LCD 41 at that time in setting communication conditions by operating the operation panel 29 of the remote access routers 2A and 2B.
[0050]
First, when the telephone number is not set on the destination telephone number input screen in step S24 (FIG. 13) described above, only the cursor “_” is displayed on the LCD 41. Here, when the down cursor key 43d is pressed 10 times (step S121), the numerical value of the cursor position becomes “0” (step S122).
[0051]
Next, when the right cursor key 43c is pressed once (step S123), the cursor moves one position to the right, “0_” is displayed on the LCD 41, and the second digit value is entered (step S124). . When the down cursor key 43d is pressed twice (step S125), the numerical value of the second digit becomes “2” (step S126).
[0052]
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 the third digit value is entered (step S128). . When the down cursor key 43d is pressed four times (step S129), the numerical value of the third digit becomes “4” (step S130), and when the right cursor key 43c is pressed once (step S131), The cursor moves to the right and enters the fourth digit.
[0053]
In the same manner, when the input of all digits of the telephone number is completed (step S132), the destination telephone number corresponding to the setting item of “TEL” 91 shown in FIG. 9 is set, so that the SET key 43e is pressed ( In step S133), a sub address input screen (step S26) which is a setting item for the next communication condition is displayed on the LCD 41.
[0054]
In addition, in the sub address input screen in step S26 (FIG. 13) described above, this can be set by performing the same operation as the destination telephone number setting. Therefore, by operating the operation panel 29, the setting item of “Sub Address” 92 shown in FIG. 9 can be freely set.
[0055]
The method for setting communication conditions by operating the operation panel 29 of the remote access routers 2A and 2B has been described above. The contents of each setting item set in this way are the same as those set in the dumb terminal 5. It is stored in an area corresponding to each setting item in the communication condition storage unit 28 shown in FIG. Then, the communication condition set from the operation panel 29 and the communication condition previously set and stored in the communication condition storage unit 28 as a default value are combined to set the communication condition necessary for the operation of the remote access routers 2A and 2B. Is done. 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 there are no filtering conditions. The remote access routers 2A and 2B can be installed and operated without having them.
[0056]
In the present invention, the communication conditions necessary for operating the remote access routers 2A and 2B can be set on both the dam terminal 5 and the operation panel 29. The communication condition storage unit 28 is provided with a storage area so as to store information (setting means information) indicating which one of the communication conditions is performed.
[0057]
And when communication conditions are set from the dam terminal 5, it is set as the structure locked so that communication conditions cannot be set from the operation panel 29 after that. That is, after the advanced communication conditions are set from the dam terminal 5, the communication conditions are not rewritten by the operation panel 29, and the safety of the LAN or WAN communication is enhanced.
[0058]
FIG. 17 is a flowchart showing a maintenance item selection method 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 maintenance screen is displayed on the LCD 41 in step S5 (FIG. 11), when the SET key 43e is pressed (step S71), the initial screen of the maintenance item selection screen is displayed on the LCD 41. Maintenance items are displayed in the lower part of the screen of the LCD 41 (step S72).
[0059]
Next, when the down cursor key 43d is pressed (step S73), the second maintenance item is displayed in the lower part of the screen of the LCD 41 (step S74). Similarly, every time the down cursor key 43d is pressed (step S75), the maintenance item display on the LCD 41 is switched, and the final maintenance item is displayed on the LCD 41 (step S76). When 43d is pressed (step S77), the screen returns to the maintenance screen display (step S5).
[0060]
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, a case where the communication confirmation to the IP address “176.000.005.010” is activated is shown.
[0061]
First, when the communication confirmation selection screen is displayed on the LCD 41 (step S81), when the SET key 43e is pressed (step S82), a communication confirmation partner IP address input screen is displayed on the LCD 41. The IP address of the initial value “000.000.000.000” is displayed, and the cursor is displayed at the first digit (step S83).
[0062]
Here, when the down cursor key 43d is pressed once (step S84), the numerical value of the first digit changes from “0” to “1” (step S85). Next, when the right cursor key 43c is pressed once (step S86), the cursor moves to the second digit (step S87).
[0063]
Here, when the down cursor key 43d is pressed seven times (step S88), the numerical value of the second digit changes from “0” to “7” (step S89). 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 partner IP address is input (steps S90 to S101).
[0064]
When the SET key 43e is pressed in a state where the input of the partner IP address is completed (step S102), communication confirmation is started, so-called PING is transmitted to the destination of the partner IP address at a predetermined interval, and a response from the partner is monitored. Then, the remote access routers 2A and 2B display on the LCD 41 a display for confirming communication (step S103). At this time, the communication confirmation (PING packet transmission) is executed an infinite number of times in a fixed time, and the normal number of communication confirmations in the lower part of the screen of the LCD 41 (the number of times the partner has responded within a predetermined time since the PING packet was transmitted) And the number of abnormal times (the number of times the partner did not respond within a predetermined time after transmitting the PING packet) is displayed. When it is desired to end the communication confirmation, when the MODE key 43e is pressed (step S104), the communication confirmation selection screen is displayed again on the screen of the LCD 41 (step S81).
[0065]
As described above, the remote access routers 2A and 2B transmit the PING packet, so that the line separation test can be accurately performed as shown in FIG. In other words, conventionally, in FIG. 21, the test content is only PING (1) or PING (2), and a PING command is input from the LAN terminal, so that only communication confirmation is performed, as in PING (3). In addition, PING could not be transmitted from the remote access router. Therefore, when the LAN communication is not normally performed, it cannot be clearly performed by 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. Therefore, by combining this with the self-diagnosis function, the line separation test can be accurately performed. become.
[0066]
Further, since communication confirmation (transmission of a PING packet) can be performed by operating the operation panel 29, the remote access routers 2A and 2B can be easily installed (LAN construction) in a short time without connecting a dumb terminal. It becomes like this.
[0067]
FIG. 20 is a diagram showing a maintenance item failure information reference method by panel operation and a display example of the LCD 41 at that time. When the SET key 43e is pressed in a state where the failure information reference selection screen is displayed on the LCD 41 in step S74 (FIG. 17) described above (step S111), along with the time when the latest collected failure information code is collected, it is displayed on the LCD 41. It is displayed (step S112).
[0068]
Here, when the down cursor key 43d is pressed once (step S113), the second failure information code is displayed on the LCD 41 together with the time when the failure information code is collected (step S114). In the same manner, every time the down cursor key 43d is pressed, up to 256 failure information items collected in order are displayed together with the time collected on the LCD 41 in order (steps S115 to S117).
[0069]
When the collected oldest failure information is displayed (step S118), when the downward cursor key 43d is pressed (step S119), the failure information reference selection screen is displayed again on the LCD 41 (step S74).
[0070]
In the present embodiment, the remote access routers 2A and 2B are 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, the communication condition (protocol Etc.), LAN communication can be performed without any problem.
[0071]
【The invention's effect】
According to the present invention, by setting an operation key and a display on the remote access router, setting of the minimum communication condition necessary for operating the remote access router and starting of communication check are performed when the remote access router is installed. Failure information can be checked without a dam terminal, and a remote access router can be easily installed even by a user who does not have advanced expertise.
[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 a remote access router according to the present invention.
FIG. 4 is a front view showing an operation panel of a remote access router according to the present invention.
FIG. 5 is a diagram showing communication condition setting contents of a remote access router according to the present invention.
FIG. 6 is a diagram showing system information setting contents in communication condition setting contents.
FIG. 7 is a diagram showing ISDN information setting contents in communication condition setting contents.
FIG. 8 is a diagram showing PPP information setting contents in communication condition setting contents.
FIG. 9 is a diagram showing IP routing information setting contents in communication condition setting contents.
FIG. 10 is a diagram showing IP filtering information setting contents in communication condition setting contents.
FIG. 11 is a flowchart showing a method for 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 (1/2) showing a method for switching setting items of communication conditions by a panel operation of a remote access router according to the present invention and a display example of an LCD at that time.
FIG. 13 is a flowchart (2/2) showing a method for switching setting items of communication conditions 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. 14 is a flowchart showing a line type selection method and an LCD display example at the time of setting communication conditions by panel operation of the remote access router according to the present invention.
FIG. 15 is a flowchart showing a LAN-side IP address input method and a display example of the LCD at that time in setting communication conditions by panel operation of the remote access router according to the present invention.
FIG. 16 is a flowchart showing a method for inputting a destination telephone number on the communication line side and a display example on the LCD at that time in setting communication conditions by panel operation of the remote access router according to the present invention.
FIG. 17 is a flowchart showing a maintenance item selection method 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. 18 is a flowchart (1/2) showing an operation method for starting communication check of maintenance items by panel operation of the remote access router according to the present invention and an LCD display example at that time.
FIG. 19 is a flowchart (2/2) illustrating an operation method in the case of starting communication confirmation following FIG. 10 and a display example of the LCD at that time.
FIG. 20 is a flowchart showing a failure information reference method for maintenance items of a remote access router by panel operation and a display example of an LCD at that time.
FIG. 21 is a diagram illustrating an operation state in checking communication of maintenance items by panel operation of the remote access router according to the present invention.
[Explanation of symbols]
1 Communication network
2 Remote access router
3 LAN
4 LAN terminal
5 Dam terminal
21 LAN controller
22 Main control unit
23 Program memory
24 Work memory
25 Dam 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 keys

Claims (4)

A remote access router that is inserted between a first LAN and a communication line and controls communication with the second LAN via the communication line based on a set communication operation condition ,
An operation panel including operation keys and a display;
A dam terminal control unit capable of accommodating a communication operation condition setting terminal;
A storage device for storing setting communication operation conditions,
In the remote access router equipped with a communication control unit for controlling the LAN communication based on the communication operation condition stored in the storage equipment,
The communication operation condition can be set from the first communication operation condition that can be set only from the communication operation condition setting terminal connected to the dumb terminal control unit, and from both the communication operation condition setting terminal and the operation panel. A second communication operation condition including at least the type of the communication line, the first LAN side IP address, the first LAN side subnet mask, the communication line side IP address, and the communication line side subnet mask; Consisting of
First setting means for storing the first communication operation condition and the second communication operation condition set from the communication operation condition setting terminal in the storage device ;
Second setting means for storing in the storage device the second communication operation condition set by the operation panel based on a combination of a display state of the display and an operation of the operation key;
Remote access router characterized by comprising a. The setting of the second communication operation condition by the operation panel includes the type of the communication line, the first LAN side IP address, the first LAN side subnet mask, the communication line side IP address, and the communication line side. The remote access router according to claim 1, wherein the remote access router is performed while sequentially displaying a subnet mask setting screen. 3. When the communication operation condition is set from the communication operation condition setting terminal, the second communication operation condition cannot be set from the operation panel. The listed remote access router. The second communication operation condition includes a condition for setting an operation mode of the remote access router,
Based on the combination of the display of the operation mode setting screen of the remote access router on the display and the operation of the operation keys, the operation mode is set to the first operation mode or the second operation mode from the display panel. The remote access router according to claim 1 or 2, characterized by the above.

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