CN110011912A - Case type switching equipment uplink switching method and device - Google Patents
Case type switching equipment uplink switching method and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L49/25—Routing or path finding in a switch fabric
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Abstract
The invention discloses a kind of case type switching equipment uplink switching method and device, the uplink includes active and standby uplink, which comprises management board main module receives the active and standby port information of user configuration and is sent to line card pair module；The active and standby port information that the management board main module is sent is saved as port pair information by the line card pair module；The port status of port pair information corresponding ports described in the line card pair module monitors then puts the forwarding state for leading to another port in the port pair information when monitoring either port failure；The line card pair module sends media access control address MAC and updates message to upstream equipment so that upstream equipment, which updates message according to the MAC, updates local MAC Address to get through standby uplink.The embodiment of the present invention is able to solve the problem of lower uplink performance of handoffs in the prior art, poor compatibility.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for uplink switching in chassis-type switching equipment.
Background
A switching device (Switch) is a network device used for electrical (optical) signal forwarding. It can provide an exclusive electric signal path for any two network nodes accessing the switching equipment, and can be divided into a box type switching equipment, a chassis type switching equipment and the like.
The chassis type switching equipment generally adopts a modular structure and mainly comprises a main chassis, a power supply, an engine, an interface module (comprising a management board, a line card and the like), a functional module and the like; the chassis type switching equipment with a considerable number of slots and strong network expansion capability has stronger performance, greater flexibility and expandability, and modules with different numbers, different rates and different interface types can be selected according to actual or future requirements so as to adapt to ever-changing network requirements.
Although the connection of a single link in the backbone equipment connection is easy to implement, a simple failure can cause the network to be interrupted. Therefore, in the process of actual network construction, in order to maintain the stability of the network, in a network environment formed by a plurality of switching devices, some backup connections are generally used to improve the robustness and stability of the network.
The industry generally adopts a dual uplink backup scheme as follows: the exchange equipment abstracts the double uplink links into main and standby links, puts through the backup link when the main link fails, and sends Flush message for updating the MAC address table to get through the newly switched link.
As shown in fig. 1, a Switch a (Switch a) is connected to a Switch B (Switch B) and a Switch C (Switch C) through two links, respectively, where one of the links is a main link (Switch a- > Switch B- > Switch D) and is in an active state to perform normal data exchange, and the other link is a backup link (Switch a- > Switch C- > Switch D) and needs to be blocked to disable data exchange, so as to avoid generation of a data loop. When the main link fails (generally, the connection line of the main link fails, and the equipment or port at the opposite end of the main link fails) and is disconnected, the backup link needs to be automatically unblocked to enable the backup link to be normally switched. In this way, redundant backups of links can be achieved. As shown in fig. 1, when the main port of the switching apparatus a fails and a link is switched, the path of the original main link Switch from Switch D- > Switch B- > Switch a is switched to Switch D- > Switch C- > Switch a, but the MAC on Switch D stores the original entry, so that the Switch a needs to send a Flush packet with an updated MAC address to Switch D, and the Switch D can update the local MAC entry and open the new link after receiving the Flush packet.
However, in the above network, the loop is usually eliminated by using a Spanning Tree Protocol (STP), but the STP has a long convergence time, and loses much traffic, and is not suitable for a networking environment with a high requirement on the convergence time. With the development of science and technology, especially in the scenes of national defense and military industry and port freight transportation, the performance requirement on the double-link switching is higher and higher; meanwhile, in an actual application scenario, devices of multiple manufacturers often exist, and Flush update messages of the MAC address table cannot be compatibly received. It is important to provide a handover scheme that can further improve the link handover performance and is compatible with multiple vendors.
Disclosure of Invention
The embodiment of the invention provides an uplink switching method and device of chassis type switching equipment, which are used for solving the problems of lower uplink switching performance and poor compatibility in the prior art.
A chassis type switching device uplink switching method, wherein the uplink comprises a main uplink and a standby uplink, the method comprises the following steps:
the main management board module receives the information of the main and standby ports configured by a user and sends the information to the line card sub-module;
the line card secondary module stores the primary and standby port information sent by the management board main module as port pair information;
the line card secondary module monitors the port state of a port corresponding to the port pair information, and when any port is monitored to be in fault, the forwarding state of the other port in the port pair information is released;
and the line card secondary module sends a Media Access Control (MAC) update message to the upstream equipment so that the upstream equipment updates a local MAC address according to the MAC update message to get through the standby uplink.
The master/standby port information includes master port information for identifying a port configured as an uplink master port and standby port information configured as an uplink standby port.
The method for sending the MAC update message to the upstream device by the line card secondary module comprises the following steps:
when the upstream equipment is incompatible with the equipment for updating the Flush message, the line card secondary module constructs a two-layer filling message with a source MAC address as a learned MAC address of the downstream equipment and a target MAC address as a broadcast address, and sends the two-layer filling message to the upstream equipment as an MAC updating message.
Further, after the line card secondary module sends a MAC update message to the upstream device, the method further includes:
the line card secondary module informs the main management board module of the monitored port fault information;
and the management board main module performs service state switching according to the port fault information.
Further, the method further comprises:
after the line card secondary module monitors that the fault port is recovered, the line card secondary module informs port recovery information to the management board main module;
the management board main module sends a link recovery switching message after the link is stable;
and the line card secondary module receives a link recovery switching message sent by the management board main module, blocks the forwarding state of the currently put-through port, puts through the forwarding state of the recovered fault port, and sends an MAC updating message to the upstream equipment so that the upstream equipment updates the local MAC address according to the MAC updating message.
An apparatus for switching uplink of chassis-type switching device, the uplink comprising a main uplink and a standby uplink, the apparatus comprising: the management board main module and the line card sub-module; wherein,
the management board main module is used for receiving and sending the master/slave port information configured by the user;
the line card secondary module is used for storing the master/standby port information sent by the management board main module as port pair information; monitoring the port state of a port corresponding to the port pair information, and when monitoring that any port is in fault, opening the forwarding state of the other port in the port pair information; and the uplink control unit is also used for sending a Media Access Control (MAC) address updating message to the upstream equipment so that the upstream equipment updates the local MAC address according to the MAC address updating message to get through the uplink.
The master/standby port information includes master port information for identifying a port configured as an uplink master port and standby port information configured as an uplink standby port.
The line card secondary module sends an MAC update message to upstream equipment, and is specifically used for:
and when the upstream equipment is incompatible with equipment for refreshing the Flush message, constructing a two-layer filling message with a source MAC address as a self-learned MAC address of the downstream equipment and a target MAC address as a broadcast address as an MAC updating message, and sending the two-layer filling message to the upstream equipment.
Further, the line card sub-module is configured to notify the monitored port fault information to the management board main module after sending a media access control address MAC update message to the upstream device;
the management board main module is further configured to perform service state switching according to the port fault information.
Further, the line card sub-module is further configured to notify port recovery information to the management board main module after monitoring that a failed port recovers;
the management board main module is further configured to send a link recovery switching message after the link is stable;
the line card sub-module is further configured to receive a link recovery switching message sent by the management board main module, block a forwarding state of a currently put-through port, put through a forwarding state of a recovered faulty port, and send an MAC update message to the upstream device, so that the upstream device updates a local MAC address according to the MAC update message.
The invention has the following beneficial effects:
the line card secondary module monitors the port state of a port corresponding to port pair information by receiving the main/standby port information configured by a user and storing the port state as the port pair information, puts through the forwarding state of the other port in the port pair information when monitoring that any port has a fault, and sends an MAC updating message to enable upstream equipment to update an MAC address so as to finally get through a standby uplink, notifies the port fault information to the management board main module after the line card secondary module switches the link, only switches the service state and presents the service state to the user after the management board main module receives the port fault information, and because the line card secondary module already indicates the line card to complete the link switching, the management board main module does not need to indicate the line card to switch, thereby improving the switching speed of the uplink, the convergence performance is improved, the scene application with higher convergence performance requirement can be met, and the compatibility is higher.
Drawings
Fig. 1 is a schematic diagram of a dual uplink network topology;
fig. 2 is a schematic flow chart illustrating an implementation of an uplink switching method of a chassis-type switching device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an uplink switching device of a chassis-type switching device according to an embodiment of the present invention.
Detailed Description
Although the switching convergence performance of the current dual uplink generally reaches the level of 50ms, the convergence performance at the level of 50ms cannot meet the requirements for application scenes with extremely high requirements on the convergence performance, such as the industries of national defense and military industry, port freight and the like; the embodiment of the invention provides an uplink switching method of chassis type switching equipment, wherein a main module of a management board can be independently arranged or can be arranged in a main control management board and is used for indicating the main control management board to carry out various operations; the line card secondary module can be independently arranged, can also be arranged in the line card and is used for indicating the line card to carry out various operations; the specific implementation flow is shown in fig. 2, and the execution steps are as follows:
step 201, a management board main module receives information of a main port and a standby port configured by a user and sends the information to a line card secondary module;
here, the active/standby port information includes information for identifying a primary port configured as an uplink port and information for a standby port configured as a standby uplink port.
Step 202, the line card secondary module stores the master/standby port information sent by the management board main module as port pair information;
based on the principle that after a link failure occurs at one port of the dual uplink, the other port is necessarily put through to transmit the state, the line card secondary module does not need to distinguish the main port from the standby port for the received information of the main/standby ports, and therefore the line card secondary module can distinguish the main/standby ports according to the information of the main/standby ports sent by the main module of the management board and then store the information of the main/standby ports, and can directly store the information of the main/standby ports as the port pair information.
Step 203, the line card secondary module monitors the port state of the port corresponding to the port pair information, and when monitoring that any port is in fault, the forwarding state of the other port in the port pair information is released;
here, the line card secondary module monitors the port state in real time, and once sensing that any port in the port pair has a fault, the forwarding state of the other port in all Virtual Local Area Networks (VLANs) is released.
Step 204, the line card secondary module sends a Media Access Control (MAC) update message to the upstream device so that the upstream device updates a local MAC address according to the MAC update message to get through an uplink;
when the line card secondary module puts through the forwarding state of the other port, the MAC address of the port pair is cleared, and an MAC updating message is sent to the upstream equipment; when the upstream device receives the MAC update packet, the upstream device updates the local MAC address according to the MAC update packet to get through the standby uplink.
Further, in step 204, the sending, by the line card sub-module, the MAC update packet to the upstream device includes:
when the upstream equipment is incompatible with the equipment for updating the Flush message, the line card secondary module constructs a two-layer filling message with a source MAC address as the MAC of the downstream equipment learned by the line card secondary module, and a target MAC address as a broadcast address, and the two-layer filling message is used as an MAC updating message and is sent to the upstream equipment.
Specifically, the line card sub-module searches that the downstream device has learned an MAC address table, and constructs the MAC update message as a source MAC address; and when the upstream equipment is incompatible equipment for updating the Flush message, the line card secondary module constructs and sends an MAC updating message which is a common two-layer filling broadcast message with all destination MAC addresses being F.
Further, after the line card secondary module sends a MAC update message to the upstream device, the method further includes:
the line card secondary module informs the main management board module of the monitored port fault information;
the management board main module switches service states according to the port fault information; here, after the management board main module receives the port failure information, the line card sub-module already opens the standby uplink, and the uplink is successfully switched, at this time, the management board main module does not need to instruct the line card to perform any operation, and only needs to perform service state switching to be presented to the user, so as to inform that the uplink is switched to the standby uplink.
Further, the method further comprises:
after the line card secondary module monitors that the fault port is recovered, the line card secondary module informs port recovery information to the management board main module; after the line card secondary module monitors that the fault port is recovered, the existing access state is maintained without any preprocessing recovery, and port recovery information is directly notified to the management board main module;
the management board main module sends a link recovery switching message to the line card secondary module after the link is stable; after the main module of the management board receives the port recovery information and a preset delay time is passed, the main module can inform the secondary module of the line card of the link recovery switching after the link is stable;
and the line card secondary module receives a link recovery switching message sent by the management board main module, blocks the forwarding state of the currently put-through port, puts through the forwarding state of the recovered fault port, and sends an MAC updating message to the upstream equipment so that the upstream equipment updates the local MAC address according to the MAC updating message.
The uplink switching method of the chassis switch device provided by the embodiment of the present invention is described by taking a chassis switch as an example, and it should be understood that the method idea provided by the embodiment of the present invention may also be applied to similar multi-CPU communication devices, including but not limited to a switch device, a gateway device, a wireless device, a router, and the like.
The method for switching the uplink of the chassis type switching device provided by the embodiment of the invention comprises the steps that a line card secondary module monitors the port state of a port corresponding to port pair information by receiving the information of a main port and a standby port configured by a user and storing the information as the port pair information, when any port is monitored to be in fault, the forwarding state of the other port in the port pair information is put through, and an MAC updating message is sent to enable upstream equipment to carry out MAC address updating so as to finally get through the standby uplink, after the line card secondary module carries out link switching, the port fault information is notified to a management board main module, after the management board main module receives the port fault information, only the service state switching is carried out and presented to the user, and because the line card secondary module already indicates that the line card completes the link switching, the management board main module does not need to indicate the line card to carry out switching operation, thereby improving the switching speed of, the convergence performance is improved, the scene application with higher convergence performance requirement can be met, and the compatibility is higher.
Based on the same inventive concept, an embodiment of the present invention provides an uplink switching device for chassis-type switching equipment, where the uplink includes a main uplink and a standby uplink, and a structure of the device is shown in fig. 3, where the device includes: a management board main module 31, a line card sub-module 32; wherein,
the management board main module 31 is configured to receive and send master/slave port information configured by a user;
the line card sub-module 32 is configured to store the master/slave port information sent by the management board main module 31 as port pair information; monitoring the port state of a port corresponding to the port pair information, and when monitoring that any port is in fault, opening the forwarding state of the other port in the port pair information; and the uplink control unit is also used for sending a Media Access Control (MAC) address updating message to the upstream equipment so that the upstream equipment updates the local MAC address according to the MAC address updating message to get through the uplink.
The master/standby port information includes master port information for identifying a port configured as an uplink master port and standby port information configured as an uplink standby port.
The line card sub-module 32 sends the MAC update message to the upstream device, specifically:
and when the upstream equipment is incompatible with equipment for refreshing the Flush message, constructing a two-layer filling message with a source MAC address as a self-learned MAC address of the downstream equipment and a target MAC address as a broadcast address as an MAC updating message, and sending the two-layer filling message to the upstream equipment.
Further, the line card sub-module 32 is configured to notify the monitored port fault information to the management board main module after sending a MAC update message to the upstream device;
the management board main module 31 is further configured to perform service state switching according to the port fault information.
Further, the line card sub-module 32 is further configured to monitor that a failed port is recovered, and notify port recovery information to the management board main module;
the management board main module 31 is further configured to send a link recovery switching message after the link is stable;
the line card sub-module 32 is further configured to receive a link recovery switching message sent by the management board main module, block a forwarding state of a currently put-through port, put through a forwarding state of a recovered faulty port, and send an MAC update message to the upstream device, so that the upstream device updates a local MAC address according to the MAC update message.
It should be understood that the implementation principle and process of the uplink switching device of chassis-type switching equipment according to the embodiment of the present invention are similar to those in fig. 2 and the embodiment shown above, and are not described herein again.
The line card secondary module monitors the port state of a port corresponding to port pair information by receiving the main/standby port information configured by a user and storing the port state as the port pair information, puts through the forwarding state of the other port in the port pair information when monitoring that any port has a fault, and sends an MAC updating message to enable upstream equipment to update an MAC address so as to finally get through a standby uplink, notifies the port fault information to the management board main module after the line card secondary module switches the link, only switches the service state and presents the service state to the user after the management board main module receives the port fault information, and because the line card secondary module already indicates the line card to complete the link switching, the management board main module does not need to indicate the line card to switch, thereby improving the switching speed of the uplink, the convergence performance is improved, the scene application with higher convergence performance requirement can be met, and the compatibility is higher.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While alternative embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (10)
1. A method for switching uplink of chassis-type switching device, wherein the uplink includes a main uplink and a standby uplink, the method comprising:
the main management board module receives the information of the main and standby ports configured by a user and sends the information to the line card sub-module;
the line card secondary module stores the primary and standby port information sent by the management board main module as port pair information;
the line card secondary module monitors the port state of a port corresponding to the port pair information, and when any port is monitored to be in fault, the forwarding state of the other port in the port pair information is released;
and the line card secondary module sends a Media Access Control (MAC) update message to the upstream equipment so that the upstream equipment updates a local MAC address according to the MAC update message to get through the standby uplink.
2. The method of claim 1, wherein the active/standby port information includes primary port information identifying a port configured as an upstream primary link port and standby port information identifying a port configured as an upstream standby link port.
3. The method according to claim 1, wherein the line card submodule sends the MAC update message to an upstream device, including:
when the upstream equipment is incompatible with the equipment for updating the Flush message, the line card secondary module constructs a two-layer filling message with a source MAC address as a learned MAC address of the downstream equipment and a target MAC address as a broadcast address, and sends the two-layer filling message to the upstream equipment as an MAC updating message.
4. The method according to claim 1, wherein after the line card sub-module sends a MAC update message to an upstream device, the method further comprises:
the line card secondary module informs the main management board module of the monitored port fault information;
and the management board main module performs service state switching according to the port fault information.
5. The method of any of claims 1 to 4, further comprising:
after the line card secondary module monitors that the fault port is recovered, the line card secondary module informs port recovery information to the management board main module;
the management board main module sends a link recovery switching message after the link is stable;
and the line card secondary module receives a link recovery switching message sent by the management board main module, blocks the forwarding state of the currently put-through port, puts through the forwarding state of the recovered fault port, and sends an MAC updating message to the upstream equipment so that the upstream equipment updates the local MAC address according to the MAC updating message.
6. An apparatus for switching uplink of chassis-type switching device, wherein the uplink includes a main uplink and a standby uplink, the apparatus comprising: the management board main module and the line card sub-module; wherein,
the management board main module is used for receiving and sending the master/slave port information configured by the user;
the line card secondary module is used for storing the master/standby port information sent by the management board main module as port pair information; monitoring the port state of a port corresponding to the port pair information, and when monitoring that any port is in fault, opening the forwarding state of the other port in the port pair information; and the uplink control unit is also used for sending a Media Access Control (MAC) address updating message to the upstream equipment so that the upstream equipment updates the local MAC address according to the MAC address updating message to get through the uplink.
7. The apparatus of claim 6, wherein the active/standby port information comprises information identifying a primary port configured as an upstream primary link port and information identifying a standby port configured as an upstream standby link port.
8. The apparatus according to claim 6, wherein the line card subsystem module sends the MAC update packet to an upstream device, and is specifically configured to:
and when the upstream equipment is incompatible with equipment for refreshing the Flush message, constructing a two-layer filling message with a source MAC address as a self-learned MAC address of the downstream equipment and a target MAC address as a broadcast address as an MAC updating message, and sending the two-layer filling message to the upstream equipment.
9. The apparatus according to claim 6, wherein the line card sub-module, after sending a MAC update message, is further configured to notify monitored port failure information to the management board main module;
the management board main module is further configured to perform service state switching according to the port fault information.
10. The apparatus according to any one of claims 6 to 9, wherein the line card sub-module is further configured to notify the management board main module of port restoration information after monitoring restoration of a failed port;
the management board main module is further configured to send a link recovery switching message after the link is stable;
the line card sub-module is further configured to receive a link recovery switching message sent by the management board main module, block a forwarding state of a currently put-through port, put through a forwarding state of a recovered faulty port, and send an MAC update message to the upstream device, so that the upstream device updates a local MAC address according to the MAC update message.
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| CN109361552A (en) * | 2018-11-28 | 2019-02-19 | 迈普通信技术股份有限公司 | Port switching method, master control board card, business board and switching equipment |
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