WO2012024967A1 - Method and apparatus for supporting multiple serial interface terminals entry - Google Patents

Abstract

A method and an apparatus for supporting multiple serial interface terminals entry are disclosed in the present invention. The method includes: when a serial interface terminal initiates an entry request, the entry request is transmitted to a main control panel of a chassis which a main System Controller (SC) is located in; the main control panel of the chassis which the main SC is located in determines whether the serial interface terminal which initiates the entry request is allowed to enter, and notifies the entry result to the serial interface terminal which initiates the entry request. Therefore, with the present invention, when there is no serial interface terminal in the entry state and/or the serial interface terminal which initiates the entry request is belongs to the chassis which the main SC is located in, the serial interface terminal which initiates the entry request is allowed to enter in order to enable any serial interface terminal to request for an entry, thereby implementing the flexible entry for the serial interface terminal and being propitious to device maintenance.

Description

 Method and device for supporting multi-serial terminal login

 The present invention relates to a terminal login technology, and in particular, to a method and apparatus for supporting multi-serial terminal login. Background technique

 With the rapid development of the network, the network has higher and higher requirements on the interface capacity and switching capacity of the chassis-connected devices. Therefore, the single-chassis-connected device has been difficult to meet the increasing user network data in terms of interface capacity and switching capacity. Demand. Currently, the clustering technology is used to interconnect the original single-chassis devices to form a new multi-chassis device to expand the capacity and interface capacity to meet user requirements.

 As a widely used connection device in a network system, a router not only requires high-reliability data transmission, but also requires scalability. It introduces cluster technology into the router field, with the purpose of using two or more ordinary routers.集群 Connected with cluster technology to form router cluster devices, enabling these common routers to work together and parallelize devices to achieve smooth expansion of system capacity, thus meeting the user's need for higher capacity.

 Generally, a router cluster device includes two types of chassis: one is a Central Fabric Chassis (CFC), and the other is a Line Card Chassis (LCC), where each frame has Main Control Board (MPUF) and some Switch Boards (SFU). Generally, a system controller (SC) is provided in the router cluster device, and the SC can be run on any one of the chassis. In addition, the SC also has a backup SC and a standby SC, and the standby SC runs on another chassis. Thus, the chassis where the primary SC is located and the chassis where the standby SC is located exist.

In a traditional router cluster device, only the serial terminal of the main control board of the chassis where the primary SC is located is allowed to log in and operate, such as Operation Administration. Maintenance, OAM operation, the serial port of the main control board of the chassis where the other non-system control points are located is not allowed to log in and operate, and lacks flexibility. If the serial port of the main control board of the main SC is damaged or is unavailable for other reasons, you can perform the active/standby switchover between the chassis where the primary SC is located and the chassis where the standby SC is located. The new serial terminal that allows login is available. However, this type of active/standby switching operation will cause equipment wear and is not conducive to equipment maintenance. Summary of the invention

 In view of the above, the present invention provides a method and device for supporting multi-serial terminal login, so that any serial terminal can implement the request login and operation, realize flexible login of the serial terminal, and facilitate device maintenance.

 In order to achieve the above object, the technical solution of the present invention is achieved as follows:

 The present invention provides a method for supporting multi-serial terminal login. The method includes: when a serial terminal initiates a login request, the login request is sent to the main control board of the chassis where the main SC is located; The control board determines whether the serial terminal that initiates the login request is allowed to log in, and returns the login result to the serial terminal.

 The condition for the serial terminal to log in to the login request is: when no other serial terminal is in the login state, and/or the serial terminal that initiates the login request belongs to the chassis where the primary SC is located, the serial terminal login that allows the login request is allowed. .

 In the above solution, the determining whether to allow the serial terminal to initiate the login request includes: determining whether the serial terminal that initiates the login request belongs to the chassis where the primary SC is located, and if it belongs to the chassis where the primary SC is located, determining whether the serial terminal is currently in the chassis The login status, if not, allows the serial terminal to initiate the login request to log in. If the serial terminal is in the login state, the current serial terminal is forced to go offline, and the serial terminal that initiates the login request is allowed to log in.

If it is not in the chassis of the primary SC, it is determined whether the serial terminal is currently in the login state. If not, the serial terminal that initiates the login request is allowed to log in. If the serial terminal is in the login state, the serial port that refuses to initiate the login request is rejected. Terminal login. In the above solution, the determining whether to allow the serial terminal to log in to initiate the login request includes: determining whether the serial terminal is currently in the login state, and if not, allowing the serial terminal to initiate the login request to log in; if the serial terminal is already in the login state Then, it is further determined whether the serial terminal that initiates the login request belongs to the chassis where the primary SC is located, and if it belongs to the chassis where the primary SC is located, the current serial terminal that has logged in is forced to go offline, and the serial terminal that initiates the login request is allowed to log in; If the primary SC is in the chassis, the serial terminal login that initiated the login request is denied.

 In the above solution, the main control board that sends the login request to the chassis of the main SC includes: The serial port daemon of the main control board of the chassis where the serial terminal that initiates the login request sends the login request to the chassis of the main SC. Remote login (telnet) process of the main control board;

 The telnet process of returning the login result to the serial port is: The telnet process of the main control board of the chassis where the primary SC is located returns the login result to the serial port daemon of the main control board of the chassis where the serial terminal that initiated the login request is located.

 In the above solution, the login request is sent to the main control board of the chassis where the main SC is located by using an inter-CPU message or a message in the CPU; wherein the inter-CPU message or the intra-CPU message carries the serial port terminal where the login request is initiated. The attribute information of the box;

 The determining whether the serial terminal that initiates the login request belongs to the chassis where the primary SC is located includes: determining the attribute information in the inter-CPU message or the message in the CPU, and determining whether to belong to the primary SC or the non-primary sc according to the attribute information.

 In the foregoing solution, the determining whether the serial port terminal is currently in the login state comprises: determining whether the preset login flag bit is set, if the bit is set, the existing serial port terminal is in the login state; otherwise, the serial port terminal is not in the login state. Login status.

 In the above solution, the method of the present invention further includes: after any one of the serial terminals is logged in, if there is no operation for a specified continuous time, the serial port terminal currently in the login state is forced to go offline.

The invention also provides a device for supporting multi-serial terminal login, the device comprises: transmitting and receiving Module, login request processing module;

 The transceiver module is configured to receive a login request initiated by the serial terminal, and forward the login request to the login request processing module;

 The login request processing module is configured to determine whether the serial terminal that initiates the login request is allowed to log in, and notify the serial terminal that initiates the login request to the login result.

 In the above solution, the login request processing module further includes: a login request determination module, a login module;

 The login request judging module is configured to determine whether the serial port terminal is currently in the login state, and determine that the serial port terminal is in the login state, and notify the login module;

 The login module is configured to allow and complete the login of the serial terminal that initiates the login request when the serial terminal is not in the login state.

 In the above solution, the login request judging module is further configured to: determine whether the serial port terminal that currently initiates the login request belongs to the chassis where the main SC is located.

 Further, when the login request judging module determines that the serial port terminal is in the login state and the serial port terminal that initiates the login request belongs to the non-primary SC, the login module is further configured to reject the serial terminal login that initiates the login request, and reject the reason. The serial port terminal that initiates the login request is notified. When the login request determination module determines that the serial port terminal is in the login state and the serial port terminal that initiates the login request belongs to the primary SC, the login module is also used to force the serial terminal terminal currently in the login state. The offline terminal is allowed to log in to the serial terminal that initiates the login request, and the login result is notified to the serial terminal that initiated the login request.

 Compared with the prior art, the present invention has the following advantages:

The method and the device for supporting the multi-serial terminal login provided by the present invention allow the serial terminal to initiate the request to log in when a serial terminal initiates a login request and determines that no other serial terminal is in the login state in the router cluster device. In this way, the serial terminal of the main control board on any one of the router cluster devices can request login and perform operations such as OAM operation, and The operation effect is the same as that of the serial terminal of the main control board of the main SC. The router can be configured to manage the device. This solves the problem that the router cluster device can only support the serial terminal on the main control board of the main SC. Login question.

 In addition, even if another serial terminal is in the login state, if the serial terminal of the main control board of the main SC is initiating a login request, the serial terminal that is currently in the login state can be forced to go offline, and the main request for the login request is allowed. The serial terminal of the main control board of the chassis of the SC is logged in, so that the serial terminal of the main control board of the main SC is preferentially logged in.

 In addition, in the actual application of the present invention, when the serial port terminal of the main control board of the main SC is damaged or unavailable due to other reasons, the main SC and the standby SC need not be switched, and the host SC can be used. The serial port of the main control board of any chassis other than the chassis completes the login and OAM operations, which not only avoids device wear caused by device switching, but also facilitates device maintenance. DRAWINGS

 1 is a schematic flowchart of an implementation of a method for supporting a multi-serial terminal login method according to the first embodiment of the present invention; FIG. 2 is a schematic flowchart of a second embodiment of the present invention; Schematic diagram of the composition of the example. detailed description

 The basic idea of the present invention is: In a router cluster device, when a serial terminal initiates a login request, it is determined that no other serial terminal is currently in the login state of the router cluster device, regardless of whether the serial terminal that initiates the login request belongs to the host SC. In the box, the serial terminal that initiates the login request is allowed to log in, so that any serial terminal can request login.

 The specific implementation of the present invention will be described in detail below with reference to the accompanying drawings.

 Method embodiment 1

FIG. 1 is a schematic flowchart showing the implementation of the first embodiment of the multi-serial terminal login method according to the present invention. As shown in FIG. 1 , the method for supporting multi-serial terminal login in this embodiment includes the following steps:

101: When the serial terminal initiates the login request, the login request is sent to the main control board of the chassis where the main SC is located;

 Here, the serial terminal that initiates the login request may be the serial terminal of the main control board of the main SC, or the serial terminal of the main control board of the chassis where the main SC is located; whether the serial terminal that initiates the login request belongs to the primary SC, The login request is sent to the main control board of the chassis where the main SC is located. The login request is sent by the serial port of the main control board of the chassis where the serial terminal that initiated the login request is located. The process receives the packet and sends it to the telnet process on the main control board of the main SC.

 102: The main control board of the chassis where the main SC is located determines whether the serial terminal is allowed to log in, and returns the login result to the serial terminal.

 The determining, according to the preset login rule, the preset login rule may be determining whether the serial terminal is currently in the login state, and whether the serial terminal that initiates the login request belongs to the chassis where the primary SC is located, if not If the serial terminal is in the login state and/or the serial terminal that initiates the login request belongs to the chassis where the primary SC is located, the serial terminal that initiates the login request is allowed to log in. If the serial terminal that belongs to the main control board of the main SC is in the login state, The serial terminal login that refuses to initiate the login request is rejected. The login result is that the serial terminal is allowed to log in or the serial terminal is logged in. When the serial terminal is allowed to log in, the login result is allowed to log in to the serial terminal. In contrast, when the serial terminal is denied to log in, the login result is rejected. Serial terminal login.

 It should be noted that the operation of the serial port terminal of the main control board of the chassis of the non-primary SC is sent to the telnet process on the main control board of the chassis of the main SC through the serial port daemon process. The telnet process of the main control board of the main SC is used to monitor the status of all other non-primary SC serial terminals.

Method embodiment two FIG. 2 is a schematic flowchart of the second embodiment of the present invention. The method for supporting multi-serial terminal login in this embodiment includes the following steps: 201: Any serial terminal initiates login request;

 In this step, the serial port daemon on the main control board of the chassis where the serial port terminal that initiates the login request receives the login request, and sends the login request to the main control board of the main SC where the main SC is located. The telnet process; wherein, the inter-CPU message or the intra-CPU message includes the attribute information of the chassis of the serial terminal that initiates the login request, and the attribute information is: the chassis of the serial terminal that initiates the login request is the primary SC. If the chassis where the serial port is used is the chassis where the primary SC is located, the chassis in the CPU is used. If the chassis of the serial terminal that initiated the login request is in the chassis, The chassis where the main SC is located uses the messages between CPUs.

 202: Determine whether the chassis of the serial terminal that initiates the login request is the chassis where the primary SC is located, and if yes, execute 203, if not, execute 206;

 Specifically, the telnet process on the main control board of the main SC is configured to receive the inter-CPU message or the intra-CPU message, if the information about the chassis included in the message between the CPU or the message in the CPU is the host SC. In the box, the login request is initiated by the serial terminal of the chassis where the primary SC is located, and then 203 is performed; if the information about the chassis included in the message between the CPU or the message in the CPU is the chassis of the non-primary SC, Indicates that the login request is initiated by the serial terminal of the chassis where the non-primary SC is located, and then executes 206;

 203: Determine whether the current router cluster device has a serial terminal login, if yes, execute 204; otherwise, execute 205;

Here, it should be noted that: After any serial port terminal of the router cluster device is successfully logged in, the telnet process on the main control board of the main SC is set to a preset login identifier, such as: set to 1 or true; When the serial port terminal that is logged in to the router is logged out, the telnet process on the main control board of the main SC is reset, such as: Is 0 or false.

 In this step, the telnet process on the main control board of the main SC is determined according to the login identifier, and whether the serial terminal is in the login state. If the identifier is set, the value of the identifier is equal to 1 or set to true, it means that the serial terminal in the current device is in the login state, execute 204; if the flag is reset, if the value of the flag is equal to 0 or is set to false, it means that no serial terminal is in the login state. , executing 205;

 204: Force the currently logged-in serial terminal user to go offline;

 Here, the forced offline operation is: executing a forced user offline code program by the telnet process on the main control board of the main SC, forcing the serial terminal to go offline.

 205: The serial terminal of the main control board of the main SC is logged in, and the login is completed, and 209 is performed. Here, after the telnet process on the main control board of the main SC is completed, the login result is asynchronous. Send to the serial port daemon on the main control board of the chassis where the serial terminal that initiated the login request is located, and then execute 209;

 206: Determine whether there is a serial terminal login in the current router cluster device, if yes, execute 207; otherwise, execute 208;

 The telnet process on the main control board of the main chassis of the main SC determines whether a serial terminal is in the login state according to the login identifier. If the identifier is set, the value of the identifier is equal to 1 or If it is true, it means that the serial terminal is currently logged in, and 207 is executed; if the flag is reset, if the value of the flag is equal to 0 or is set to false, it means that there is no serial terminal login, and 208 is performed;

 207: Prompt that the serial terminal is logged in, the login request is not allowed, and the execution is 209. Here, the telnet process on the main control board of the main SC is sent to the telnet process by the asynchronous message. The serial port daemon on the main control board of the chassis where the serial terminal that initiated the login request is located, and executes 209;

208: Log in to the serial terminal that initiates the login request. Specifically, the serial terminal that initiates the login request enters the login authentication process. After the login is complete, the telnet process on the main control board of the main SC is sent to the chassis of the serial terminal where the login request is initiated. The serial port daemon on the control board executes 209. Here, since the telnet process determines that the serial terminal that initiated the login request can log in, the telnet process directly monitors the login result, and then sends the login result back to the serial port daemon.

 209: Return the login result to the serial terminal user who initiated the login request;

 Here, the serial port daemon on the main control board of the chassis where the serial terminal that initiates the login request returns the received serial login result or the rejected reason to the serial terminal user, and displays it on the interface of the user terminal, prompting the user. The serial port has been successfully logged in, or the serial terminal has been denied login.

 In the process of FIG. 2, the sequence of step 202 and step 203 can also be reversed, that is, it is first determined whether the serial port terminal is currently in the login state, and if not, the login of the serial terminal that initiated the login request is completed; If the terminal is in the login state, it is determined whether the serial terminal that initiated the login request belongs to the chassis where the primary SC is located. If it belongs to the chassis where the primary SC is located, the currently logged-in serial terminal is forced to go offline, and the serial terminal that initiates the login request is completed. If the login does not belong to the chassis where the primary SC is located, the serial terminal login that initiated the login request is rejected.

 In a specific implementation, the present invention also adds a protection mechanism to the router cluster device: After any serial port terminal logs in, if there is no operation for a specified continuous time, the telnet on the main control board of the main SC is located. The process will execute the code program for forcing the user to go offline, forcing the serial terminal that is currently in the login state to go offline, thus preventing a serial port terminal from being occupied for a long time without operating, causing other serial terminal terminals to fail to log in. The specified continuous time may be set according to actual needs in a timer program in the telnet process.

In order to implement the foregoing method, the present invention further provides an apparatus for supporting multi-serial terminal login. As shown in FIG. 3, the apparatus embodiment includes: a transceiver module 301, and a login request processing module 302; The transceiver module 301 is located on the main control board of the main SC. When the serial terminal initiates the login request, the transceiver module 301 is configured to receive the login request, and send the login request to the chassis of the main SC. Login request processing module 302 on the main control board;

 The login request processing module 302 is configured to determine whether to allow the serial terminal terminal to initiate the login request to log in, and return the login result to the serial terminal that initiates the login request.

 Here, the serial port daemon of the main control board of the chassis where the serial terminal is initiating the login request sends a login request to the telnet process of the main control board of the main SC. The telnet process of the main control board of the main SC is to initiate the login. The serial port daemon of the main control board of the chassis where the serial port terminal is located returns the login result. The login result is the login success, login failure/rejection reason.

 The login request processing module 302 further includes: a login request determination module 3021 and a login module 3022;

 The login request judging module 3021 is configured to determine whether the serial port terminal is in the login state in the router cluster device, and determine that the serial port terminal is in the login state, notify the login module 3022;

 Further, the login module 3022 is configured to allow and complete the login of the serial terminal that initiates the login request when the serial port terminal is not in the login state in the router cluster device.

 In the above device, the login request determining module 302 is further configured to: determine whether the serial terminal that initiates the login request belongs to the chassis where the primary SC is located;

 Further, the login request determining module determines that when the serial port terminal in the router cluster device is in the login state and the serial port terminal that initiates the login request belongs to the non-primary SC, the login module 3022 is further configured to reject the chassis where the non-primary SC is located. The serial terminal of the main control board logs in, and notifies the serial terminal that initiated the login request.

The login request judging module determines that the serial port terminal in the router cluster device is in the login state, and the serial port terminal that initiates the login request belongs to the main SC, and the login module 3022 is further configured to force the serial port terminal currently in the login state to be forced. Line, and the master who is allowed to initiate a login request Log in to the serial terminal of the main control board of the chassis where the SC is located, and notify the serial terminal that initiated the login request.

 The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim A method for supporting multi-serial terminal login, the method includes the following steps: When a serial terminal initiates a login request, the login request is sent to the main control board of the chassis where the main system control point SC is located; The main control board of the chassis determines whether to allow the serial terminal that initiates the login request to log in, and notifies the serial terminal of the login request.  2. The method according to claim 1, wherein the condition for permitting the serial terminal to log in to initiate the login request is:  When no other serial terminal is in the login state, and/or the serial terminal that initiates the login request belongs to the chassis where the primary SC is located, the serial terminal that initiates the login request is allowed to log in.  The method according to claim 1, wherein the determining whether to allow the serial terminal login to initiate the login request comprises:  Determine whether the serial terminal that initiates the login request belongs to the chassis where the primary SC is located. If it belongs to the chassis where the primary SC is located, it determines whether the serial terminal is currently logged in. If not, the serial terminal that initiates the login request is allowed to log in. If the serial terminal is in the login state, the current serial port is logged in, and the serial terminal that initiates the login request is allowed to log in. If it is not in the chassis where the primary SC is located, it is determined whether the serial terminal is currently logged in. If not, the serial terminal that initiates the login request is allowed to log in. If the serial terminal is in the login state, the serial terminal login that initiated the login request is denied.  The method according to claim 1, wherein the determining whether to allow the serial terminal login to initiate the login request comprises: It is determined whether the serial terminal is in the login state. If not, the serial terminal that initiates the login request is allowed to log in. If the serial terminal is in the login state, it is further determined whether the serial terminal that initiated the login request belongs to the chassis where the primary SC is located. If it belongs to the chassis where the primary SC is located, it forces the currently logged-in serial terminal to go offline and allows the serial terminal to initiate the login request. If the host does not belong to the chassis where the primary SC is located, the serial terminal login that initiated the login request is denied. The method according to any one of claims 1 to 4, wherein the sending the login request to the main control board of the chassis where the main SC is located includes:  The serial port daemon of the main control board of the chassis where the serial port terminal that initiates the login request sends the login request to the remote login telnet process of the main control board of the main SC.  The telnet process of returning the login result to the serial port includes: the telnet process of the main control board of the main SC is returned to the serial port daemon of the main control board of the chassis where the serial terminal that initiated the login request is located.  The method according to claim 3 or 4, wherein the login request is sent to the main control board of the chassis where the main SC is located by using an inter-CPU message or a message in the CPU; wherein the inter-CPU message or CPU The internal message carries the attribute information of the chassis where the serial terminal that initiated the login request is located;  The determining whether the serial terminal that initiates the login request belongs to the chassis where the primary SC is located includes: determining the attribute information in the inter-CPU message or the message in the CPU, and determining whether to belong to the primary SC or the non-primary sc according to the attribute information.  The method according to claim 3 or 4, wherein the determining whether the serial port terminal is currently in the login state comprises: determining whether the preset login flag bit is set, if set, A serial terminal is in the login state; otherwise, no serial terminal is in the login state.  The method according to any one of claims 1 to 4, further comprising: after any one of the serial terminals is logged in, if there is no operation for a specified continuous time, the current login state is forced. The serial terminal is offline.  A device for supporting multi-serial terminal login, wherein the device comprises: a transceiver module and a login request processing module; wherein The transceiver module is configured to receive a login request initiated by the serial terminal, and the login request Requesting forwarding to the login request processing module;  The login request processing module is configured to determine whether the serial terminal that initiates the login request is allowed to log in, and notify the serial terminal that initiates the login request to the login result.  The device according to claim 9, wherein the login request processing module further comprises: a login request determination module, a login module;  The login request judging module is configured to determine whether the serial port terminal is currently in the login state, and determine that the serial port terminal is in the login state, and notify the login module;  The login module is configured to allow and complete the login of the serial terminal that initiates the login request when the serial terminal is not in the login state.  The device according to claim 10, wherein the login request determining module is further configured to: determine whether the serial terminal that currently initiates the login request belongs to the chassis where the primary SC is located.  12. Apparatus according to claim 11 wherein:  When the login request judging module determines that the serial port terminal is in the login state and the serial port terminal that initiates the login request belongs to the non-primary SC, the login module is further configured to reject the serial terminal login that initiates the login request, and initiate the login by rejecting the reason. Requested serial terminal;  When the login request judging module determines that the serial port terminal is in the login state and the serial port terminal that initiates the login request belongs to the main SC, the login module is also used to force the serial port terminal currently in the login state to go offline and allow the login request to be initiated. The serial terminal is logged in, and the login result is notified to the serial terminal that initiated the login request.