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WO2012019464A1 - Dispositif et procédé d'interconnexion inter-plaques dans une grappe de routeurs - Google Patents

Dispositif et procédé d'interconnexion inter-plaques dans une grappe de routeurs Download PDF

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Publication number
WO2012019464A1
WO2012019464A1 PCT/CN2011/072869 CN2011072869W WO2012019464A1 WO 2012019464 A1 WO2012019464 A1 WO 2012019464A1 CN 2011072869 W CN2011072869 W CN 2011072869W WO 2012019464 A1 WO2012019464 A1 WO 2012019464A1
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WIPO (PCT)
Prior art keywords
central
ethernet
switch board
ethernet switch
frame
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Ceased
Application number
PCT/CN2011/072869
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English (en)
Chinese (zh)
Inventor
叶傲
陈健
周海山
杨骐
杜相文
马苗苗
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ZTE Corp
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ZTE Corp
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Publication of WO2012019464A1 publication Critical patent/WO2012019464A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/40—Constructional details, e.g. power supply, mechanical construction or backplane
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/35—Switches specially adapted for specific applications
    • H04L49/351—Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches

Definitions

  • the present invention relates to a technique for controlling surface interconnection, and in particular, to an apparatus and method for inter-board interconnection in a router cluster. Background technique
  • the core equipment of the network faces increasingly severe challenges, especially the capacity and scalability of the core router of the backbone network.
  • high-end core routers have high requirements in terms of capacity, security and reliability, and multi-service bearer capabilities.
  • the core routers of backbone networks must have good scalability and upgrade capabilities to adapt to the Internet. Changeable and rapid development trend.
  • Router cluster technology is the most effective way to solve the bottleneck of router capacity. It is a great leap and change in the history of router development. It breaks the traditional router expansion mode, while retaining the clarity of the network structure, facilitating operation management and facilitating maintenance. Without increasing maintenance costs.
  • Router clusters also known as router matrices or multi-chassis interconnects, are: By using parallel switching technology, two or more common core routers are connected in some way to form a multi-level multi-plane switching matrix system. It can work together and behave only as a logical router, thus breaking through the limitations of single chassis in terms of switching capacity, power consumption, heat dissipation, etc., and smoothly expanding to a larger capacity routing switching system.
  • the high-performance core router represents the development direction of the Internet, and it also best reflects the technical level of equipment manufacturers. Review the development history of core routers, Analysis of the current mainstream routing products features, we can see that the current core router technology development trends have the following aspects:
  • the capacity is getting higher and higher, and the port type is increased:
  • the main performance is the increase of the slot number and the high density of the line card.
  • the port capacity is increased from 2.5G to 10G, and then from 10G to 40G.
  • the type of interface is gradually increasing.
  • the system architecture is gradually improved: from the first generation single bus single CPU to the second generation single bus master and slave CPU, after the third generation single bus symmetric multi-CPU and fourth-generation multi-bus multi-CPU, to the present
  • the fifth generation shared memory and sixth generation crossbar system In terms of switching fabrics, high-end routers mainly use shared memory structures, and T-bit large-capacity routers mostly use multi-level switching fabrics to achieve future expansion to large-capacity non-blocking switching.
  • QoS Quality of Service
  • the control plane link provides a channel for control messages in the system.
  • the interaction between the control plane messages in the router cluster is generally implemented through the central switch box, which is equivalent to a message relay station, and the control plane links of each line card chassis are connected to On the center frame.
  • a link or Ethernet switch unit fails, it may affect a box or multi-frame user service.
  • a device for implementing control plane interconnection in a router cluster the first implementation scheme in the prior art is shown in FIG.
  • the device is in active/standby mode.
  • the two Ethernet switches in the chassis are in active/standby mode. Only the mainboard is switched, and the interconnect ports of the standby board are in the closed state. At a certain time, the main control board only
  • the Ethernet switch board can send and receive packets through an Ethernet switch board.
  • the center Ethernet switch board can only communicate with the link of an Ethernet switch board in the chassis.
  • the disadvantages of this implementation are: There are multiple single points of failure, such as when the link between the two central switching frames fails, resulting in a relationship between the two central switching frames, between the line card frame and the central switching frame. The communication chain is broken, and even the entire router cluster crashes. When there is a problem with the active and standby signal lines of the two Ethernet switch boards in the frame, the active/standby switchover cannot be completed. Finally, the communication link between the boards of the entire frame and other frames is disconnected. In general
  • FIG. 2 A device for implementing control plane interconnection in a router cluster, and a second implementation scheme in the prior art is shown in FIG. 2 .
  • the device uses a dual-NIC mode, that is, the board in the frame, such as the main control board, uses the dual-NIC type.
  • Each NIC is connected to an Ethernet switchboard in the frame.
  • the two NICs can send and receive packets at the same time.
  • the packet received by one NIC will not be sent to the Ethernet switchboard from another NIC.
  • the two Ethernet switching units in the frame can participate in packet exchange at the same time. There is no active/standby signal line or network port connection between them.
  • the main object of the present invention is to provide an apparatus and method for inter-board interconnection in a router cluster, which can improve reliability and solve the problem of communication disconnection between the line card frame and the central switching frame.
  • An apparatus for interconnecting boards in a router cluster comprising: at least two central switching frames, a line card frame, and a central Ethernet switchboard connected between the at least two central switching frames, the device further comprising: The Ethernet switch boards in the line card frame are respectively connected to the central Ethernet switch boards in the at least two central switch frames.
  • the first Ethernet switch board in the line card frame is interconnected with the first center Ethernet switch board, and the first Ethernet switch board is interconnected with the second center Ethernet switch board.
  • the second Ethernet switch board in the line card frame is interconnected with the first center Ethernet switch board, and the second Ethernet switch board is interconnected with the second center Ethernet switch board.
  • the first central Ethernet switchboard is interconnected with each of the Ethernet switchboards located in the other central switch chassis, and the second central Ethernet switchboard is interconnected with each of the Ethernet switchboards located in the other central switch chassis.
  • the communication between the central switch frame and the line card frame is established through the link between the interconnected first Ethernet switch board and the second center Ethernet switch board; or through the interconnected second Ethernet Establishing a communication between the central switching frame and the line card frame by using a link between the switch board and the second central Ethernet switch board;
  • the communication between the central switch fabric and the line card frame is established through the link between the interconnected first Ethernet switchboard and the first central Ethernet switchboard; or, through the interconnected second Ethernet exchange A link between the board and the first central Ethernet switch board establishes communication between the central switch frame and the line card frame.
  • the second Ethernet switch board and the first part are interconnected.
  • the link between the central switch fabric and the line card frame is established.
  • the communication between the central switch frame and the line card frame is established through the link between the first Ethernet switch board and the first center Ethernet switch board; or the first Ethernet switch board is interconnected.
  • a communication between the central switching frame and the line card frame is established with the link between the second central Ethernet switchboard.
  • the communication between the central switch fabric and the line card frame is established through the link between the first Ethernet switchboard and the second central Ethernet switchboard. Or establish a communication between the central switch frame and the line card frame through the link between the interconnected second Ethernet switch board and the first central Ethernet switch board; or through the interconnected second Ethernet switch board and the second center Ethernet switch board Linking between the central switch fabric and the line card frame; when the link between the second central Ethernet switch board and the second Ethernet switch board fails, the first Ethernet switch board interconnected with the first center Ethernet switch board Linking, establishing communication between the central switching frame and the line card frame; or establishing communication between the central switching frame and the line card frame through the link between the interconnected first Ethernet switching board and the second central Ethernet switching board; or through interconnection
  • the link between the second Ethernet switchboard and the first central Ethernet switchboard establishes communication between the central switch frame and the line card frame.
  • a method for interconnecting boards in a router cluster comprising: connecting at least two central switch boards between the central switch frames, the method further comprising: respectively: separating the Ethernet switch boards in the line card frame The central Ethernet switch boards are connected to at least two central switching frames.
  • the method further includes: establishing, by using a link between the first Ethernet switch board and the second center Ethernet switch board, establishing communication between the central switch frame and the line card frame; or a chain between the interconnected second Ethernet switchboard and the second central Ethernet switchboard Road, establishing communication between the central switching frame and the line card frame;
  • the method further includes: establishing communication between the central switch frame and the line card frame by using a link between the first Ethernet switch board and the first center Ethernet switch board; or The link between the second Ethernet switchboard and the first central Ethernet switchboard establishes communication between the central switch frame and the line card frame.
  • the method further includes: establishing communication between the central switch frame and the line card frame by using a link between the interconnected second Ethernet switch board and the second central Ethernet switch board; or, Establishing a communication between the central switch fabric and the line card frame by connecting the second Ethernet switch board and the first center Ethernet switch board;
  • the method further includes: establishing communication between the central switch frame and the line card frame by using a link between the interconnected first Ethernet switch board and the first center Ethernet switch board; or, by interconnecting A link between the first Ethernet switchboard and the second central Ethernet switchboard establishes communication between the central switch frame and the line card frame.
  • the method further includes: establishing a central switch frame by using a link between the first Ethernet switch board and the second center Ethernet switch board. Communication of the line card frame; or establishing communication between the central switch frame and the line card frame through the link between the interconnected second Ethernet switch board and the first central Ethernet switch board; or through the interconnected second Ethernet switch board and the second Establishing a communication between the central switch frame and the line card frame by the link between the central Ethernet switch boards;
  • the method further includes: establishing a central switch frame and a line card by using a link between the first Ethernet switchboard and the first central Ethernet switchboard.
  • the communication between the chassis and the line card frame is established through the link between the first Ethernet switch board and the second center Ethernet switch board; or the second Ethernet switch board and the first center Ethernet are interconnected.
  • the link between the switchboards establishes the communication between the central switch frame and the line card frame.
  • the Ethernet switch boards in the line card frame are respectively connected to the central Ethernet switch boards in at least two center switch frames.
  • FIG. 1 is a schematic structural diagram of an inter-board interconnection device of a router cluster in the prior art
  • FIG. 2 is a schematic structural diagram of an inter-board interconnection device of another router cluster in the prior art
  • Ethernet switch boards in the line card frame are respectively connected to the central Ethernet switch boards in at least two center switch frames.
  • connection in this paper is different from the “interconnection” which only includes physical connections in the general sense.
  • the “interconnection” in this paper means the interconnection of control planes between boards, which has both physical connection and software control. The relationship of the connection is not described.
  • a device for interconnecting boards in a router cluster which mainly includes the following contents:
  • the device includes: at least two central switching frames, a line card frame, and a central Ethernet switchboard connected between the at least two central switching frames, the device further comprising: the Ethernet switchboards in the line card frame and the at least The central Ethernet switch boards are connected in the center switch boxes.
  • first center Ethernet switch board located in one center switch frame is interconnected with the second center Ethernet switch board located in the other center switch frame, and the first Ethernet switch board located in one line card frame is interconnected with the first center Ethernet switch board.
  • the first Ethernet switchboard is interconnected with the second central Ethernet switchboard.
  • the second Ethernet switch board located in the line card frame is interconnected with the first center Ethernet switch board
  • the second Ethernet switch board is interconnected with the second center Ethernet switch board.
  • first central Ethernet switch board is interconnected with each of the Ethernet switch boards located in the other central switch frame
  • second central Ethernet switch board is interconnected with each of the Ethernet switch boards located in the other central switch frame
  • the communication between the central switch frame and the line card frame is established through the link between the interconnected first Ethernet switch board and the second center Ethernet switch board; or through the interconnected second Ethernet Establishing a communication between the central switching frame and the line card frame by using a link between the switch board and the second central Ethernet switch board;
  • the communication between the central switch fabric and the line card frame is established through the link between the interconnected first Ethernet switchboard and the first central Ethernet switchboard; or, through the interconnected second Ethernet exchange A link between the board and the first central Ethernet switch board establishes communication between the central switch frame and the line card frame.
  • the communication between the central switch frame and the line card frame is established through the link between the interconnected second Ethernet switch board and the second central Ethernet switch board; or, through the interconnected second Ethernet Establishing a communication between the central switching frame and the line card frame by using a link between the switch board and the first central Ethernet switch board;
  • the communication between the central switch frame and the line card frame is established through the link between the first Ethernet switch board and the first center Ethernet switch board; or the first Ethernet switch board is interconnected.
  • a communication between the central switching frame and the line card frame is established with the link between the second central Ethernet switchboard.
  • the communication between the central switch frame and the line card frame is established through the link between the interconnected first Ethernet switch board and the second center Ethernet switch board. Or establish a communication between the central switch frame and the line card frame through the link between the interconnected second Ethernet switch board and the first central Ethernet switch board; or through the interconnected second Ethernet switch board and the second center Ethernet switch board Link, establishing communication between the central switching frame and the line card frame;
  • the link between the second central Ethernet switchboard and the second Ethernet switchboard fails, the communication between the first Ethernet switchboard and the first central Ethernet switchboard is established, and communication between the central switch frame and the line card frame is established.
  • multiple links between the central switch frame and the line card frame can implement link aggregation using the Link Aggregation Control Protocol (LACP).
  • LACP Link Aggregation Control Protocol
  • the benefit of this is to avoid loops.
  • the present invention increases the interconnection between the second central Ethernet switch board and the first Ethernet switch board.
  • the link aggregation is not used, the first center Ethernet switch board and the second center Ethernet A loop is formed between the switch board and the first Ethernet switch board, and after the link aggregation is performed, the first Ethernet switch board is respectively interconnected with the first center Ethernet switch board and the second center Ethernet switch board.
  • a link is actually handled as a link aggregation group, which is equivalent to a link, thus avoiding loops.
  • the present invention further solves the problem of communication disconnection between the line card frame and the central switching frame, and further increases other possible interconnections in the device, covering all possible interconnections in the device, and may include the interior of the central switching frame.
  • Inter-board control plane interconnection inter-board control plane interconnection inside the line card frame
  • inter-board control plane interconnection between the central switching frames inter-board control plane interconnection between the central switching frames
  • inter-board control plane interconnection between the line card frame and the central switching frame inter-board control plane interconnection between the line card frame and the central switching frame.
  • the upgrade technology of the invention is safe, reliable, flexible and convenient, and can also ensure the smooth upgrade of the control plane.
  • the board interconnected by the control plane of the board includes: a central Ethernet switch board and an Ethernet switch board, and includes The central Ethernet switch board and peripheral boards other than the Ethernet switch board, such as the main control board.
  • the first level is: the peripheral board is exchanged on the main control board; the second level is the exchange on the Ethernet switch board; the third level is the center Ethernet exchange. Exchange on the board.
  • the central Ethernet switchboard is used to interconnect the interfaces in the router cluster, and the Ethernet switchboards of each frame are connected to the central Ethernet switchboard, thus implementing the hub for control communication between the interfaces.
  • the central Ethernet switchboard is implemented in both BOOT and major versions. When one central Ethernet switchboard is in the BOOT, the other can also implement the stacking function in the large version.
  • the BOOT refers to the degree of system startup. In order to adapt to an increasingly complex application environment in the electronic field, such as the communication industry and the automation industry, a corresponding main control central processor (CPU) is usually designed according to requirements. ), and BOOT is the basis for guiding the CPU system to start.
  • the large board is corresponding to BOOT.
  • BOOT corresponds to the bios setting and hardware detection phase when the computer starts, that is, the stage before starting the operating system; and the large version corresponds to the operating system startup phase.
  • the Ethernet switch board has two functions. One is to connect the central Ethernet switch board to communicate with other frames. The other is to establish the communication link between the peripheral boards in the frame. The communication between the peripheral boards of this frame must pass through the Ethernet switch board.
  • the Ethernet switchboards in this subrack are connected to each other. The connected ports are the stacking ports. The stacking function of the Ethernet switch board is implemented.
  • the peripheral board, such as the main control board is only a whole, just like an Ethernet switchboard. .
  • the Ethernet switchboard of the central switch chassis also needs to be connected to the central Ethernet switchboard of another central switch chassis. That is, the Ethernet switchboards of each chassis are connected to the central Ethernet switchboard. As a result, the redundancy of the link is achieved. Higher, the reliability will be improved accordingly.
  • the peripheral boards in each frame include the main control board, the line card, and the switching network board.
  • Each peripheral board has its own board.
  • the small switch chip, the peripheral board is connected to the Ethernet switch board in the frame through the small switch chip. Establish a communication link. In this way, the peripheral boards can communicate with each other through the Ethernet switch board.
  • a peripheral board is connected to two Ethernet switches. The two links are connected to each other through LACP.
  • Link aggregation allows one or more links to be aggregated together to form a link aggregation group.
  • the link aggregation group is treated as a separate link, that is, the ability to present the same MAC interface to the MAC application layer.
  • a packet When a packet is sent through an aggregation group formed by two ports on the peripheral board, it is determined according to the load sharing principle, which port in the aggregation group is sent. Different types of packets may be sent from different ports, so that communication bandwidth and reliability are both Can improve.
  • the advantages of the link aggregation and stacking of the present invention are as follows: Compared with the prior art, the second scheme of the prior art has a further defect: the switching time of the dual network card is relatively slow. When the communication between the main control board 21 and the main control board 23 is reached, the egress switch board 31, the central Ether switch board 41, and the Ether switch board 35 are selected. When a link in the middle fails, it needs to be very After a long time can be detected, and then switch to other links, the long interruption of control plane communication will affect the user's business operation. In short, the reliability is relatively low, and the performance of link switching is also relatively low.
  • the present invention implements link aggregation on all the boards through the small switch chip, and implements the stacking function on all the boards, and also implements the stacking function for the Ethernet switch board and the central Ethernet switch board.
  • the redundancy of the link is higher, the reliability and stability are greatly improved, and the bandwidth is also increased.
  • the boards can back up each other and share part of the load.
  • one or several links appear in the system. The fault is detected for up to 100 milliseconds, and the control plane communication is restored. When an Ethernet switchboard or the central Ethernet switchboard is reset, the communication between other boards is normal after 100 milliseconds. The impact of this type of fault on control plane communication is extremely low.
  • the central Ethernet switch board implements stacking in the BOOT.
  • the Ethernet switch board it is not aware of whether it is in the BOOT or in the large version.
  • the startup time of the Ethernet switchboard in the control center is made, so that they have a sequence and have Time difference to enter the large version, so as to ensure that they do not enter the large version at the same time, because the BOOT to the large version needs to load the kernel image, the board does not have the swap function during the process of loading the kernel image.
  • the communication interruption time between the boxes is relatively long. When they enter the large version when they are different, the system can be powered on and started to start, and the control plane communication between the frames will not be broken.
  • the invention is illustrated by way of example below.
  • the control plane interconnection device in the router cluster of the present invention includes: two central switching frames and one line card frame.
  • the interconnection of router clusters is generally one.
  • the present invention is applicable to the above several interconnection modes.
  • Each central switch chassis has a central Ethernet switch board.
  • the central switch frame has two central Ethernet switch boards.
  • Each frame has two Ethernet switch boards, and there are also some peripheral boards, such as line cards and main control boards.
  • peripheral boards such as line cards and main control boards.
  • each peripheral board is the same for the control plane interconnection. Now, only the main control board is taken as an example for explanation.
  • the boards in the chassis include: the central Ethernet switch board, the Ethernet switch board, and the peripheral boards except the center Ethernet switch board and the Ethernet switch board, such as the main control board).
  • the central Ethernet switch board it can be connected to the Ethernet switch board of the local chassis through the standby board or through the optical fiber.
  • the ports of the standby board and the optical fiber ports can be aggregated into one link aggregation group. This physical difference is not seen for the LACP protocol.
  • the link between the main control board and the Ethernet switch board is used.
  • the link ports on the main control board are negotiated with the ports on the Ethernet switch board to implement link aggregation.
  • the two Ethernet switch boards are stacked on the main control board. It is like a single board, so you can aggregate several ports into one aggregation group, just like a port for the upper application.
  • the main control board can have two or three ports, and even more ports are connected to one Ethernet switch board instead of one port, but at least one must be used to improve redundancy and reliability. . Number of interconnected ports It is mainly determined by the number of ports on the main control board d and the switch chip.
  • the ports on the peripheral boards are all set up, and they can also be aggregated. Then look at the operation and interconnection of the Ethernet switch board.
  • the stacking link between the two Ethernet switch boards can be two or more. This is just a schematic diagram. If there are multiple, link aggregation is required, and stack packets are sent and received through the stack link.
  • the Ethernet switch board of the center switch chassis needs to be connected to the central Ethernet switch board between the chassis. When a central Ethernet switch board fails, the control switch between the central switch frames and between the line card frame and the central switch frame is not controlled. Chain, and make the whole system paralyzed.
  • the two Ethernet switch boards are connected to the central Ethernet switch board between the two switches to prevent two faults.
  • the ports connected to the same card on the two Ethernet switch boards belong to a link aggregation group. They know each other's ports belong to which link aggregation group and whether the port is added to the link aggregation group. It is necessary to notify the other party through the timing synchronization and change synchronization of the stack information to maintain a stable stacking mode.
  • the two synchronization modes are used to maintain the ports of the two Ethernet switch boards. That is, the other port is added to the link aggregation group on the card or removed from the link aggregation group, and the port and link aggregation group are implemented. The information is consistent.
  • the port information is the information that the port is added to or removed from the link aggregation group and the link aggregation group number corresponding to the port.
  • After receiving the port information compare and update the port information that you have reserved.
  • the board will use this port. Add or delete from the link aggregation group, and immediately send a notification message to the other party.
  • the link aggregation group corresponding to the port is added or deleted. .
  • the two Ethernet switches need to maintain a global table of the ports that the other party has joined in the link aggregation group.
  • the contents are: link aggregation group number of the port, port number, and module number of the port.
  • the module number is the chip number of the device where the port resides. It is used to distinguish the Ethernet switch boards in the stack.
  • Timing synchronization is mainly to make up for the lack of synchronization failure. If the synchronization fails, the timing synchronization can ensure the consistency of the information at both ends.
  • the stack synchronization information between the two Ethernet switch boards is not sent as a type of message.
  • the format of the LACP packet is the packet header of the LACP packet.
  • the packet body stores the stack synchronization information.
  • IP Internet Protocol
  • MAC Media Access Control
  • the data contents of the stack synchronization are: link aggregation group number, port number, and synchronization type. Among them, the synchronization type specifies whether the synchronization or change synchronization.
  • Synchronous synchronization only synchronizes the port number of the link aggregation group and the link aggregation group number of the port.
  • the change synchronization only synchronizes the port number and port of the board that has just been deleted or added from the link aggregation group.
  • the stacking and link aggregation of the central Ethernet switchboard is performed, and the stacking and link aggregation are performed.
  • the way is the same as the Ethernet switch board.
  • the difference is that it implements the stacking function in the BOOT.
  • the other can also be stacked in the large version.
  • the stack information format in the BOOT and the processing of receiving the stack information should be the same as those in the large version.
  • the calculation of the module number of the port on the central Ethernet switch board must also be consistent.
  • the stack port is disconnected, causing the link between the two central Ethernet switch boards to fail. In this case, the other should take this from the BOOT to the center in the large version.
  • the port of the Ethernet switch is removed from the link aggregation group. After the large version is entered, the port connected to the Ethernet switch performs LACP packet negotiation. However, the static aggregation mode cannot be used because the ports are aggregated together. It is known that the system identifier of the LACP packet sent by each card in the system is represented by the chassis number, slot number, and CPU number. The port of the central Ethernet switch board is received. After the LACP packet is received, the chassis number of the other party is extracted, and the extracted chassis number is associated with the link aggregation group number to be added by the port. The rule is not only one type, as long as there is one type - corresponding The relationship is OK. Now set the rule as the rack number plus one. The value is the link aggregation group number.
  • the rules for the two central Ethernet switch boards are Straight, so that between them there is no need to send additional information to determine the link aggregation group number.
  • the port is added to the link aggregation group. If the stack port is added to the link aggregation group, the stack interface sends the stack information to the peer.
  • the connection between the Ethernet switchboard and the Ethernet switchboard between the chassis is not as good as that of Figure 3.
  • an Ethernet switchboard can connect two or more ports to the central Ethernet switchboard, or one between them.
  • the connection to one is not cross-connected, except that the connection shown in Figure 3 uses the least amount of fiber to maximize reliability. In the process of upgrading, there will be no upgrade failure due to the connection mode slightly different from Figure 3.
  • connection and configuration between the board and the Ethernet switch board, the Ethernet switch board, and the center Ethernet switch board are completed.
  • the control plane interconnection of the entire cluster is completed.
  • the solution of the invention not only makes the control plane interconnection more secure and reliable, but also makes the interconnection between the line card frame and the central switching frame more convenient and flexible, and the connection between the links and the links does not affect the quality of the system communication. the amount.
  • a method for interconnecting boards in a router cluster comprising: connecting at least two central switch boards between the central switch frames, the method further comprising: respectively: separating the Ethernet switch boards in the line card frame The central Ethernet switch boards are connected to at least two central switching frames.
  • the method includes: interconnecting a first central Ethernet switch board located in one central switch frame with a second center Ethernet switch board located in another central switch frame, and the first Ethernet switch board located in a line card frame and the first The central Ethernet switchboard interconnects the first Ethernet switchboard with the second central Ethernet switchboard.
  • the method further includes: establishing, by the link between the interconnected first Ethernet switchboard and the second central Ethernet switchboard, establishing communication between the central switch frame and the line card frame; or Establishing a communication between the central switch fabric and the line card frame by connecting the second Ethernet switch board and the second center Ethernet switch board;
  • the method further includes: establishing communication between the central switch frame and the line card frame by using a link between the first Ethernet switch board and the first center Ethernet switch board; or The link between the second Ethernet switchboard and the first central Ethernet switchboard establishes communication between the central switch frame and the line card frame.
  • the method further includes: establishing communication between the central switch frame and the line card frame by using a link between the interconnected second Ethernet switch board and the second center Ethernet switch board; or Establishing a communication between the central switch fabric and the line card frame by connecting the second Ethernet switch board and the first center Ethernet switch board;
  • the method further includes: establishing communication between the central switch frame and the line card frame by using a link between the interconnected first Ethernet switch board and the first center Ethernet switch board; or, by interconnecting A link between the first Ethernet switchboard and the second central Ethernet switchboard establishes communication between the central switch frame and the line card frame.
  • the method further includes: establishing communication between the central switch frame and the line card frame by using a link between the interconnected first Ethernet switch board and the second central Ethernet switch board; or connecting the second Ethernet switch board and the first center Ethernet through the interconnected
  • the communication between the central switching frame and the line card frame is established by the link between the switchboards, or the communication between the central switch frame and the line card frame is established through the link between the second Ethernet switch board and the second central Ethernet switch board;
  • the method further includes: establishing a central switch frame and a line card by using a link between the first Ethernet switchboard and the first central Ethernet switchboard.
  • the communication between the chassis and the line card frame is established through the link between the first Ethernet switch board and the second center Ethernet switch board; or the second Ethernet switch board and the first center Ethernet are interconnected.
  • the link between the switchboards establishes the communication between the central switch frame and the line card frame.

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Abstract

La présente invention se rapporte à un dispositif d'interconnexion inter-plaques dans une grappe de routeurs. Le dispositif selon l'invention comprend au moins deux répartiteurs de commutation centraux et un répartiteur de carte de lignes. Selon l'invention, les plaques de commutation Ethernet centrales des deux répartiteurs de commutation centraux, ou plus, sont connectées les unes aux autres; et les plaques de commutation Ethernet du répartiteur de carte de lignes sont connectées aux plaques de commutation Ethernet centrales des deux répartiteurs de commutation centraux, ou plus, respectivement. La présente invention se rapporte d'autre part à un procédé d'interconnexion inter-plaques dans une grappe de routeurs. Le procédé selon l'invention consiste : à connecter les plaques de commutation Ethernet centrales des deux répartiteurs de commutation centraux, ou plus, les unes aux autres; à connecter les plaques de commutation Ethernet du répartiteur de carte de lignes aux plaques de commutation Ethernet centrales des deux répartiteurs de commutation centraux, ou plus, respectivement. Avec le dispositif et le procédé de la présente invention, la fiabilité est renforcée et le problème lié à une interruption de la liaison de communication entre le répartiteur de carte de lignes et les répartiteurs de commutation centraux est résolu.
PCT/CN2011/072869 2010-08-09 2011-04-15 Dispositif et procédé d'interconnexion inter-plaques dans une grappe de routeurs Ceased WO2012019464A1 (fr)

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