CN105871614A - Protection method and device of board cards in communication device - Google Patents
Protection method and device of board cards in communication device Download PDFInfo
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- CN105871614A CN105871614A CN201610200647.8A CN201610200647A CN105871614A CN 105871614 A CN105871614 A CN 105871614A CN 201610200647 A CN201610200647 A CN 201610200647A CN 105871614 A CN105871614 A CN 105871614A
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- board card
- board
- standby
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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Abstract
The invention provides a protection method and device of board cards in a communication device. The technical scheme comprises following steps of configuring inter-board interconnection channels between adjacent board cards; normally, through adoption of the panel interface of a master board card, receiving service data needing to be sent to a master/backup switching board and sending service data sent by the master/backup switching board through adoption of the backboard interface of the master board card; setting the inter-board interconnection channel between the master board card and the backup board card as an interconnection state when the fault of a link passing through the panel interface of the master board card is detected; executing protection switching between the master board card and the backup board card based on the inter-board interconnection channel between the master board card and the backup board card; and through adoption of the panel interface of the backup board card, receiving the service data needing to be sent to the master/backup switching board and sending the service data sent by the master/backup switching board through adoption of the backboard interface of the master board card. According to the method and the device, millisecond level cross board card protection switching can be realized, and the high reliability demand to a communication network in a power distribution network environment can be satisfied.
Description
Technical Field
The application relates to the field of power distribution network communication, in particular to a method and a device for protecting a board card in communication equipment.
Background
In recent years, with the continuous promotion of the construction of 'strong smart grid' in China, a power distribution network not only needs to undertake production command and scheduling of a power system, but also needs to provide services for automatic and interactive information transmission and realize other value-added services such as remote monitoring and remote meter reading, so that the bandwidth required by various real-time production services and non-real-time information services is rapidly increased, and higher requirements on the aspects of bandwidth, capacity, quality, safety and the like of a power distribution network communication network are provided by power production.
In order to meet the continuously-appearing large-granularity IP service bearing requirement in the future and reduce the network construction and operation and maintenance cost, the power distribution network also gradually changes from the SDH circuit technology as the main direction to the packet technology, and the Packet Transport Network (PTN) technology which is applied on the public telecommunication network in a large scale is introduced into the power distribution network.
Because PTN devices applied in power distribution networks need to transmit a large amount of power system control information, and have a much higher requirement on reliability than public communication networks, an upper link board/service board in power communication generally needs to implement board protection, and the protection switching time is in millisecond level and much higher than the requirement in public telecommunication networks.
At present, a Link Aggregation (LAG) mode is generally adopted for realizing board protection in a PTN, and the board protection is realized by dividing communication ports located on different boards into the same aggregation group, however, the LAG protection mode needs a lot of protocol interaction, and has a problem of interoperability, and after the states of the ports in the aggregation group are switched, operations such as updating of a MAC address table are also accompanied, so that the service recovery time is long, generally between 50ms and 100ms, and the requirement that a power distribution network is less than 5 ms is difficult to achieve.
Disclosure of Invention
In view of this, an object of the present invention is to provide a method and an apparatus for protecting a board card in a communication device, which can implement millisecond-level cross-board card protection switching only by using a small protocol overhead, and meet a requirement of high reliability on a communication network in a power distribution network environment.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a protection method for a board card in communication equipment is disclosed, wherein the communication equipment comprises a main exchange board, a standby exchange board and a plurality of board cards; the main exchange board and the standby exchange board are connected with each board card through service channels, one board card in two adjacent board cards is used as a main board card, the other board card is used as a standby board card, the main board card and the standby board card are connected through an inter-board interconnection channel, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnected state when a link of a panel interface of the main board card is normal; the method is applied to the main board card and comprises the following steps:
receiving service data which needs to be sent to a main/standby exchange board by using a panel interface of a main board card, and sending the service data which is sent by the main/standby exchange board through a back board interface of the main board card;
when detecting the link fault of the panel interface of the main board card, setting the inter-board interconnection channel between the main board card and the standby board card to be in a communication state, and executing protection switching between the main board card and the standby board card based on the inter-board interconnection channel between the main board card and the standby board card, so that the standby board card receives service data which needs to be sent to the main/standby exchange board by using the panel interface of the standby board card and sends the service data which is sent by the main/standby exchange board through the backboard interface of the main board card.
A protection device for board cards in communication equipment comprises a main exchange board, a standby exchange board and a plurality of board cards; the main exchange board and the standby exchange board are connected with each board card through service channels, one board card in two adjacent board cards is used as a main board card, the other board card is used as a standby board card, the main board card and the standby board card are connected through an inter-board interconnection channel, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnected state when a link of a panel interface of the main board card is normal; the device is applied to the main board card and comprises: the system comprises a service processing unit, a fault detection unit and a protection switching unit;
the service processing unit is used for receiving service data which needs to be sent to the main/standby exchange board by using the panel interface of the main board card and sending the service data which is sent by the main/standby exchange board through the back board interface of the main board card;
the fault detection unit is used for detecting whether a link fault occurs through a panel interface of the main board card;
the protection switching unit is configured to set an inter-board interconnection channel between the main board card and the standby board card to a connected state when the fault detection unit detects that a link fault occurs through the panel interface of the main board card, and perform protection switching between the main board card and the standby board card based on the inter-board interconnection channel between the main board card and the standby board card, so that the standby board card receives service data that needs to be sent to the main/standby switch board by using its own panel interface, and sends the service data that is sent by the main/standby switch board through the backplane interface of the main board card.
In summary, the inter-board interconnection channels are arranged between adjacent board cards, and the protection switching between the main board card and the standby board card is realized through the inter-board interconnection channels, compared with the traditional protection switching through the switching chip on the switching board, the realization method is simple and quick, and the physical layer switching is realized in an electric switch mode, so that the switching chip on the switching board cannot sense the switching, the reconfiguration is not needed, the switching time can be greatly shortened, and the requirement of the power distribution network millisecond-level cross-board card protection switching can be met.
Drawings
Fig. 1 is a schematic diagram of an interconnection structure between boards in a communication device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an inter-board interconnection channel between a master board card and a standby board card in the embodiment of the present invention;
fig. 3 is a schematic diagram of a service transmission channel implemented on a host board card according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a service transmission channel implemented by an inter-board interconnection channel according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for protecting a board card in a communication device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a protection device for a board card in a communication device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic diagram of an interconnection structure between boards in a communication device according to an embodiment of the present invention, and as shown in fig. 1, the interconnection structure includes 16 boards, which are numbered 0, 1, … …, and 15, and a switch board X, Y, where X, Y is used as a main switch board and a standby switch board, respectively, and is connected to the 16 boards through service channels, so that the entire interconnection structure is in a star bus structure. In the present invention, in order to implement protection of the board cards, interconnection between adjacent board cards is further performed using an inter-board interconnection channel (as indicated by a bidirectional arrow shown by a dotted line in the figure), one board card of the two adjacent board cards is used as a master board card, and the other board card is used as a standby board card, so that protection switching between the board cards is implemented based on the inter-board interconnection channel.
In the embodiment of the present invention shown in fig. 1, an inter-board interconnection channel between two adjacent boards is implemented by a single-pole double-throw electrical switch, for example, as shown in fig. 2, an inter-board interconnection channel between a main board and a standby board is schematically illustrated, the main board is connected to a main/standby switch board through a backplane interface, and two electrical switches are configured inside the main board and between a backplane interface and a panel interface of a main panel, and are respectively used for transmitting data signals in opposite directions, that is: one of the electric switches is used for transmitting data signals sent to the main/standby exchange board, and the other electric switch is used for transmitting data signals sent from the main/standby exchange board, and the transmission directions of the data signals are opposite.
In the schematic connection diagram of the main board card and the standby board card shown in fig. 2, the two electric switches are both single-pole double-throw switches, the fixed ends of the two electric switches are connected to the backplane interface of the main board card, and the movable ends of the two electric switches (i.e., the poles of the electric switches) can be connected to both the panel interface of the main board card and the panel interface of the standby board card. When the movable ends of the two electric switches are connected to the panel interface of the main board card, the panel interface of the main board card is communicated with the backplane interface of the main board card, the panel interface of the standby board card is disconnected from the backplane interface of the main board card, and data signals are transmitted along a line (namely, main) between the panel interface of the main board card and the backplane interface which are communicated through the two electric switches. When the movable ends of the two electric switches are connected to the panel interfaces of the standby board cards, the panel interfaces of the standby board cards are communicated with the backplane interface of the main board card, the panel interface of the main board card is disconnected from the backplane interface of the main board card, and data signals are transmitted along a line (namely, main) between the panel interfaces of the standby board cards communicated with the backplane interface of the main board card through the two electric switches.
Based on the operating principle of the two electrical switches in fig. 2, in the embodiment of the present invention, a connection link between a backplane interface of the main board card and a panel interface of the standby board card, which are connected via the two electrical switches, is used as an inter-board interconnection channel between the main board card and the standby board card.
When a link passing through the panel interface of the main board card is normal, the panel interface of the main board card is communicated with the backplane interface, and an inter-board interconnection channel between the main board card and the standby board card is disconnected, so that a data signal enters from the panel interface of the main board card and is transmitted to the main/standby switch board through an electric switch (an electric switch for transmitting the data signal sent to the main/standby switch board), and/or the data signal from the main/standby switch board enters from the backplane interface of the main board card and is transmitted to the panel interface of the main board card through the electric switch (an electric switch for transmitting the data signal from the main/standby switch board).
When a link passing through the panel interface of the main board card fails, the panel interface of the board card to be used is communicated with the backplane interface of the main board card, and the inter-board interconnection channel between the main board card and the standby board card is communicated, so that protection switching between the main board card and the standby board card is realized, a data signal enters from the panel interface of the standby board card and is transmitted to the main/standby switching board through an electric switch (an electric switch for transmitting the data signal sent to the main/standby switching board), and/or the data signal from the main/standby switching board enters from the backplane interface of the main board card and is transmitted to the panel interface of the standby board card through the electric switch (an electric switch for transmitting the data signal from the main/standby switching board).
The specific method for communicating the panel interface and the backplane interface of the main board card is as follows: the moving ends of the two electrical switches are connected to the panel interface of the host board card, for example, a1 and B1, a2 and B2 in fig. 2 are connected, so that the panel interface of the host board card is connected to the backplane interface, the panel interface of the standby board card is disconnected from the backplane interface of the host board card, and at this time, the service transmission channel realized based on the host board card and the standby board card is the bidirectional channel indicated by the dotted line in fig. 3. Accordingly, the specific method for disconnecting the panel interface and the backplane interface of the main board card is as follows: the moving ends of the two electrical switches are connected to the panel interface of the standby board card, for example, a1 and C1, a2 and C2 in fig. 2 are connected, so that the panel interface of the main board card is disconnected from the backplane interface, and the panel interface of the standby board card is connected to the backplane interface of the main board card.
In the same way, since the connection link between the backplane interface of the main board card and the panel interface of the standby board card connected via the two electrical switches is an inter-board interconnection channel between the main board card and the standby board card, the specific method for communicating the inter-board interconnection channel between the main board card and the standby board card is as follows: the moving ends of the two electric switches are connected to the panel interface of the standby board card, for example, a1 and C1, a2 and C2 in fig. 2 are connected, so that the panel interface of the standby board card is connected to the backplane interface of the main board card, and the panel interface of the main board card is disconnected from the backplane interface, at this time, a service transmission channel realized based on the main board card and the standby board card is a bidirectional channel indicated by a dotted line in fig. 4. The specific method for disconnecting the inter-board interconnection channel between the main board card and the standby board card is as follows: the moving ends of the two electrical switches are connected to the panel interface of the main board card, for example, a1 and B1, a2 and B2 in fig. 2 are connected, so that the panel interface of the standby board card is disconnected from the backplane interface of the main board card, and the panel interface of the main board card is connected to the backplane interface.
In the embodiment of the present invention, there are various methods for detecting whether the link passing through the panel interface of the host board card is normal, for example, a connectivity detection method may be adopted, that is, a connectivity detection message is interacted between the panel interface of the host board card and the opposite end device, and if the connectivity detection message sent by the opposite end device is not received within a preset time, it may be determined that a link failure has occurred on the link passing through the panel interface of the host board card. The specific connectivity method in the present invention may use OAM technology, and may determine whether a link passing through the panel interface of the active board card has a link failure by detecting whether a cc (connectivity check) message of OAM is received at the panel interface of the active board card within a preset time (e.g., 3.3 seconds).
In addition, when a physical line fault occurs in the link passing through the panel interface of the host board card, the panel interface of the host board card will receive the signal loss alarm, and at this time, it can also be determined that a link fault occurs in the link passing through the panel interface of the host board card.
In the embodiment of the present invention, each board card is a same type of board card, and may be an upper link board, or may be a service board, and whether the board card is an upper link board or a service board, a panel interface of the board card refers to an external communication interface thereof, where when the board card is an upper link board, the panel interface of the board card is an upper link port of the upper link board; and when the board card is a service board, the panel interface of the board card is a service port of the service board.
It should be noted that "main/standby switch board" herein indicates a main switch board or a standby switch board, and if the main switch board or the standby switch board is the standby switch board, it indicates a failure of the main switch board.
The above description explains the principle of protecting a board in a communication device in detail, and the technical principle is that the present invention provides a method for protecting a board in a communication device and a device for protecting a board in a communication device, which are described in detail below with reference to fig. 5 and 6.
Referring to fig. 5, fig. 5 is a flowchart of a method for protecting a board card in a communication device according to an embodiment of the present invention, where the communication device includes a main switch board, a standby switch board, and a plurality of board cards; the main exchange board and the standby exchange board are connected with each board card through service channels, one board card in two adjacent board cards is used as a main board card, the other board card is used as a standby board card, the main board card and the standby board card are connected through an inter-board interconnection channel, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnected state when a link of a panel interface of the main board card is normal; the method is applied to a master board card, and mainly comprises the following steps as shown in fig. 5:
step 501, receiving service data to be sent to a main/standby switch board by using a panel interface of a main board card, and sending the service data sent by the main/standby switch board through a backplane interface of the main board card;
step 502, when detecting a link fault through the panel interface of the main board card, setting an inter-board interconnection channel between the main board card and the standby board card to be in a communication state, and performing protection switching between the main board card and the standby board card based on the inter-board interconnection channel between the main board card and the standby board card, so that the standby board card receives service data to be sent to the main/standby switch board and sends the service data sent by the main/standby switch board through the backplane interface of the main board card by using the panel interface of the standby board card.
In the method shown in figure 5 of the drawings,
the backplane interface of the main board card is connected to the panel interface of the main board card and the panel interface of the standby board card through an electric switch, a connection link between the electric switch and the panel interface of the standby board card is used as an inter-board interconnection channel between the main board card and the standby board card, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnection state when the backplane interface of the main board card is normal.
In the method shown in figure 5 of the drawings,
the electric switch is a single-pole double-throw switch;
the method for setting the inter-board interconnection channel between the main board card and the standby board card to be in a disconnection state comprises the following steps: connecting the movable end of the electric switch to a panel interface of the main board card, so that a backboard interface of the main board card is communicated with the panel interface and the backboard interface of the main board card is disconnected with the panel interface of the standby board card;
the method for setting the inter-board interconnection channel between the main board card and the standby board card to be in a communication state comprises the following steps: and connecting the movable end of the electric switch to the panel interface of the standby board card, so that the backboard interface of the main board card is disconnected from the panel interface and the backboard interface of the main board card is communicated with the panel interface of the standby board card.
In the method shown in figure 5 of the drawings,
the method for detecting whether the link fault occurs through the panel interface of the main board card comprises the following steps: the method comprises the steps of interacting a connectivity detection message with opposite-end equipment through a panel interface of a main board card, simultaneously detecting whether a physical link passing through the panel interface of the main board card fails, if the connectivity detection message of the opposite-end equipment is not received within a preset time or the physical link passing through the panel interface of the main board card fails, determining that the link failure occurs through the panel interface of the main board card, and otherwise, determining that the link failure does not occur through the panel interface of the main board card.
In the method shown in figure 5 of the drawings,
the board card is an upper link board, and a panel interface of the board card is an upper link interface of the upper link board card;
or,
the board card is a service board, and the panel interface of the board card is a service interface of the service board card.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a protection device for a board card in a communication device according to an embodiment of the present invention, where the communication device includes a main switch board, a standby switch board, and a plurality of board cards; the main exchange board and the standby exchange board are connected with each board card through service channels, one board card in two adjacent board cards is used as a main board card, the other board card is used as a standby board card, the main board card and the standby board card are connected through an inter-board interconnection channel, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnected state when a link of a panel interface of the main board card is normal; the device is applied to a master board card, as shown in fig. 6, and includes: a service processing unit 601, a fault detection unit 602, and a protection switching unit 603; wherein,
a service processing unit 601, configured to receive service data that needs to be sent to a main/standby switch board by using a panel interface of a main board card, and send the service data that is sent by the main/standby switch board through a backplane interface of the main board card;
a fault detection unit 602, configured to detect whether a link fault occurs at a panel interface passing through a host board card;
a protection switching unit 603, configured to, when the fault detection unit 602 detects that a link fault occurs through the panel interface of the main board card, set an inter-board interconnection channel between the main board card and the standby board card to a connected state, and perform protection switching between the main board card and the standby board card based on the inter-board interconnection channel between the main board card and the standby board card, so that the standby board card receives, by using its own panel interface, service data that needs to be sent to the main/standby switch board, and sends, by using the backplane interface of the main board card, the service data that is sent by the main/standby switch board via the main board card.
In the device shown in figure 6 of the drawings,
the protection switching unit 603 is configured to connect the backplane interface of the main board card to the panel interface of the main board card and the panel interface of the standby board card through an electrical switch, use a connection link between the electrical switch and the panel interface of the standby board card as an inter-board interconnection channel between the main board card and the standby board card, and set the inter-board interconnection channel between the main board card and the standby board card to a disconnected state when the backplane interface of the main board card is normal.
In the device shown in figure 6 of the drawings,
the electric switch is a single-pole double-throw switch;
the protection switching unit 603 is configured to, when the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnected state,: connecting the movable end of the electric switch to a panel interface of the main board card, so that a backboard interface of the main board card is communicated with the panel interface and the backboard interface of the main board card is disconnected with the panel interface of the standby board card;
the protection switching unit 603 is configured to, when the inter-board interconnection channel between the main board card and the standby board card is set to be in a connected state,: and connecting the movable end of the electric switch to the panel interface of the standby board card, so that the backboard interface of the main board card is disconnected from the panel interface and the backboard interface of the main board card is communicated with the panel interface of the standby board card.
In the device shown in figure 6 of the drawings,
the failure detection unit 602, when detecting whether a link failure occurs through a panel interface of the host board card, is configured to: the method comprises the steps of interacting a connectivity detection message with opposite-end equipment through a panel interface of a main board card, simultaneously detecting whether a physical link passing through the panel interface of the main board card fails, if the connectivity detection message of the opposite-end equipment is not received within a preset time or the physical link passing through the panel interface of the main board card fails, determining that the link failure occurs through the panel interface of the main board card, and otherwise, determining that the link failure does not occur through the panel interface of the main board card.
In the device shown in figure 6 of the drawings,
the board card is an upper link board, and a panel interface of the board card is an upper link interface of the upper link board card;
or,
the board card is a service board, and the panel interface of the board card is a service interface of the service board card.
In summary, it can be seen that, in the present invention, compared with the conventional star architecture, the interconnection structure between the board cards and the switch board increases the inter-board interconnection channels between adjacent board cards, and the inter-board interconnection channels implement the protection switching between the main board card and the standby board card, so that the implementation manner is simple and fast; moreover, compared with the traditional protection switching through the switching chip on the switching board, the invention realizes the physical layer switching in an electric switch mode, the switching chip on the switching board can not sense the switching, the reconfiguration is not needed, the switching time can be greatly shortened, and the requirement that the power distribution network is less than 5 milliseconds can be met.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A protection method for a board card in communication equipment is characterized in that the communication equipment comprises a main exchange board, a standby exchange board and a plurality of board cards; the main exchange board and the standby exchange board are connected with each board card through service channels, one board card in two adjacent board cards is used as a main board card, the other board card is used as a standby board card, the main board card and the standby board card are connected through an inter-board interconnection channel, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnected state when a link of a panel interface of the main board card is normal; the method is applied to the main board card and comprises the following steps:
receiving service data which needs to be sent to a main/standby exchange board by using a panel interface of a main board card, and sending the service data which is sent by the main/standby exchange board through a back board interface of the main board card;
when detecting the link fault of the panel interface of the main board card, setting the inter-board interconnection channel between the main board card and the standby board card to be in a communication state, and executing protection switching between the main board card and the standby board card based on the inter-board interconnection channel between the main board card and the standby board card, so that the standby board card receives service data which needs to be sent to the main/standby exchange board by using the panel interface of the standby board card and sends the service data which is sent by the main/standby exchange board through the backboard interface of the main board card.
2. The method of claim 1,
the backplane interface of the main board card is connected to the panel interface of the main board card and the panel interface of the standby board card through an electric switch, a connection link between the backplane interface of the main board card and the panel interface of the standby board card connected through the electric switch is used as an inter-board interconnection channel between the main board card and the standby board card, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnection state when the backplane interface of the main board card is normal.
3. The method of claim 2,
the electric switch is a single-pole double-throw switch;
the method for setting the inter-board interconnection channel between the main board card and the standby board card to be in a disconnection state comprises the following steps: connecting the movable end of the electric switch to a panel interface of the main board card, so that a backboard interface of the main board card is communicated with the panel interface and the backboard interface of the main board card is disconnected with the panel interface of the standby board card;
the method for setting the inter-board interconnection channel between the main board card and the standby board card to be in a communication state comprises the following steps: and connecting the movable end of the electric switch to the panel interface of the standby board card, so that the backboard interface of the main board card is disconnected from the panel interface and the backboard interface of the main board card is communicated with the panel interface of the standby board card.
4. The method of claim 1, 2, or 3,
the method for detecting whether the link fault occurs through the panel interface of the main board card comprises the following steps: the method comprises the steps of interacting a connectivity detection message with opposite-end equipment through a panel interface of a main board card, simultaneously detecting whether a physical link passing through the panel interface of the main board card fails, if the connectivity detection message of the opposite-end equipment is not received within a preset time or the physical link passing through the panel interface of the main board card fails, determining that the link failure occurs through the panel interface of the main board card, and otherwise, determining that the link failure does not occur through the panel interface of the main board card.
5. The method of claim 1, 2, or 3,
the board card is an upper link board, and a panel interface of the board card is an upper link interface of the upper link board card;
or,
the board card is a service board, and the panel interface of the board card is a service interface of the service board card.
6. A protection device for board cards in communication equipment is characterized in that the communication equipment comprises a main exchange board, a standby exchange board and a plurality of board cards; the main exchange board and the standby exchange board are connected with each board card through service channels, one board card in two adjacent board cards is used as a main board card, the other board card is used as a standby board card, the main board card and the standby board card are connected through an inter-board interconnection channel, and the inter-board interconnection channel between the main board card and the standby board card is set to be in a disconnected state when a link of a panel interface of the main board card is normal; the device is applied to the main board card and comprises: the system comprises a service processing unit, a fault detection unit and a protection switching unit;
the service processing unit is used for receiving service data which needs to be sent to the main/standby exchange board by using the panel interface of the main board card and sending the service data which is sent by the main/standby exchange board through the back board interface of the main board card;
the fault detection unit is used for detecting whether a link fault occurs through a panel interface of the main board card;
the protection switching unit is configured to set an inter-board interconnection channel between the main board card and the standby board card to a connected state when the fault detection unit detects that a link fault occurs through the panel interface of the main board card, and perform protection switching between the main board card and the standby board card based on the inter-board interconnection channel between the main board card and the standby board card, so that the standby board card receives service data that needs to be sent to the main/standby switch board by using its own panel interface, and sends the service data that is sent by the main/standby switch board through the backplane interface of the main board card.
7. The apparatus of claim 6,
the protection switching unit is configured to connect the backplane interface of the main board card to the panel interface of the main board card and the panel interface of the standby board card through an electrical switch, use a connection link between the backplane interface of the main board card and the panel interface of the standby board card, which are connected through the electrical switch, as an inter-board interconnection channel between the main board card and the standby board card, and set the inter-board interconnection channel between the main board card and the standby board card to a disconnected state when the backplane interface of the main board card is normal.
8. The apparatus of claim 7,
the electric switch is a single-pole double-throw switch;
the protection switching unit, when setting the inter-board interconnection channel between the main board card and the standby board card to a disconnected state, is configured to: connecting the movable end of the electric switch to a panel interface of the main board card, so that a backboard interface of the main board card is communicated with the panel interface and the backboard interface of the main board card is disconnected with the panel interface of the standby board card;
the protection switching unit, when setting the inter-board interconnection channel between the main board card and the standby board card to be in a connected state, is configured to: and connecting the movable end of the electric switch to the panel interface of the standby board card, so that the backboard interface of the main board card is disconnected from the panel interface and the backboard interface of the main board card is communicated with the panel interface of the standby board card.
9. The apparatus of claim 6, 7, or 8,
the fault detection unit, when detecting whether a link fault occurs through a panel interface of the main board card, is configured to: the method comprises the steps of interacting a connectivity detection message with opposite-end equipment through a panel interface of a main board card, simultaneously detecting whether a physical link passing through the panel interface of the main board card fails, if the connectivity detection message of the opposite-end equipment is not received within a preset time or the physical link passing through the panel interface of the main board card fails, determining that the link failure occurs through the panel interface of the main board card, and otherwise, determining that the link failure does not occur through the panel interface of the main board card.
10. The apparatus of claim 6, 7, or 8,
the board card is an upper link board, and a panel interface of the board card is an upper link interface of the upper link board card;
or,
the board card is a service board, and the panel interface of the board card is a service interface of the service board card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610200647.8A CN105871614A (en) | 2016-03-31 | 2016-03-31 | Protection method and device of board cards in communication device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610200647.8A CN105871614A (en) | 2016-03-31 | 2016-03-31 | Protection method and device of board cards in communication device |
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| CN105871614A true CN105871614A (en) | 2016-08-17 |
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| CN201610200647.8A Pending CN105871614A (en) | 2016-03-31 | 2016-03-31 | Protection method and device of board cards in communication device |
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