WO2006095508A1 - フラッディング抑制方法 - Google Patents
フラッディング抑制方法 Download PDFInfo
- Publication number
- WO2006095508A1 WO2006095508A1 PCT/JP2006/301512 JP2006301512W WO2006095508A1 WO 2006095508 A1 WO2006095508 A1 WO 2006095508A1 JP 2006301512 W JP2006301512 W JP 2006301512W WO 2006095508 A1 WO2006095508 A1 WO 2006095508A1
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- Prior art keywords
- relay
- mac frame
- group identifier
- destination group
- port
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
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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
- H04L45/32—Flooding
Definitions
- the present invention relates to a method for suppressing flooding of a delivery route of a subscriber's frame in a virtual local area network (VLAN) service provided by the provider to the subscriber.
- VLAN virtual local area network
- a bridge In a network provided by a bridge, if a MAC frame with a destination address of broadcast address, unknown multicast address, or unknown multicast address is received, the bridge sends to all ports other than the received port. Broadcast the MAC frame. This increases the possibility that a terminal connected to the network will receive a MAC frame that does not need to be received, and the link connecting the bridges is compressed by MAC frames that do not need to be forwarded. There is a problem that it may be.
- this method has a problem in that it is difficult to implement in a bridge that requires high-speed transfer with a high processing load, such as looking up route information of higher layers in the bridge. Also, like the GARP method, there is a problem that it is not effective unless all the bridges on the route are used.
- the edge transfer device and the relay transfer device need to transfer the unnecessary flooded MAC frame, which affects the transfer processing of other subscribers.
- problems such as.
- the bandwidth of subscriber lines is smaller than that of trunk lines and subscriber's local networks, and the difference in the size of the bandwidth at each subscriber's base is significant.
- traffic flooding flows into a base with a low bandwidth, there is a problem that communication at a base with a low bandwidth is hindered by unnecessary traffic.
- the provider suppresses flooding of subscribers' frames that pass through the provider network without using GARP, IGMP snooping, or similar protocols. And there is a need to reduce the forwarding of unnecessary traffic.
- Non-Patent Document 1 GARP: IEEE802.1D-1998
- Non-Patent Document 2 IGMP: RFC2236 IGMP Version 2
- a plurality of subscriber local area network capabilities are connected to a relay network via a plurality of edge transfer devices each having at least one subscriber port and at least one relay port.
- a MAC frame transfer method for suppressing flooding in the relay network of a virtual local area network realized by the above is provided.
- a subscriber local area network also receives a MAC frame via the subscriber port, and a service corresponding to the MAC frame from the subscriber port from which the MAC frame is received.
- Identifying a VLAN identifier obtaining a destination group identifier for identifying a source of the MAC frame and a set of a plurality of destinations; and based on the obtained destination group identifier, Determining whether there is at least one relay port for transferring the MAC frame in at least one relay port; and determining that there are at least one relay port for transferring the MAC frame.
- one or more subscriber ports corresponding to the specified service VLAN identifier other than the received subscriber port are included.
- the method may further include a step of transferring. Additionally or alternatively, in the edge transfer device, the relay Receiving a relay MAC frame from the network via a relay port; identifying a destination group identifier of the relay MAC frame; and in the at least one relay port based on the identified destination group identifier.
- a step of receiving a relay MAC frame from the relay network via a relay port; and the received relay in the at least one subscriber port Determining whether there is one or more subscriber ports corresponding to the service VLAN identifier of the MAC frame; and if there are one or more subscriber ports corresponding to the service VLAN identifier of the relay MAC frame.
- the method corresponds to at least a part of header information of a received MAC frame, the subscriber port that receives the MAC frame, and the MAC frame.
- the method further includes a step of setting a destination group identifier search table that records at least one of the service VLAN identifiers in association with the destination group identifier so as to be searchable and updatable, and the step of acquiring the destination group identifier includes the step of: It may include a step for searching the identifier search table. Additionally or alternatively, the destination group identifier can be searched and updated by associating with one or more relay ports and information about whether each relay port can relay the relay MAC frame corresponding to the destination group identifier.
- a step of setting a relay port search table to be recorded, and the step of determining whether or not there is one or more relay ports that transfer the relay MAC frame includes searching the relay port search table. It may include steps.
- the step of discarding the MAC frame may be further included.
- the destination group identifier may be assigned to a predetermined location of the MAC frame.
- the relay MAC frame may further include a destination address, and in the step of assigning the destination group identifier, the destination group identifier may be set as a destination address of the relay MAC frame.
- the relay MAC frame further includes a forwarding VLAN identifier corresponding to the MAC frame, and in the step of assigning the destination group identifier, the destination group identifier is set as the forwarding VLAN identifier. As something to do.
- the destination group identifier may be set as a service VLAN identifier of the relay MAC frame.
- all the edge transfer apparatuses connected to the relay network and the physical connection form of nodes constituted by the relay transfer apparatuses and each node are defined.
- an edge transfer device used for the transfer is obtained by obtaining a route through which the relay MAC frame is transferred to one or more destinations specified by the destination group identifier.
- Relay transfer device and A step of outputting the relay ports, and the step of determining whether or not there is one or more relay ports that transfer the relay MAC frame includes the output edge transfer device, relay transfer device, and Based on the relay port! /, As the decision is made!
- the destination group identifier is information indicating whether one or more relay ports and whether each relay port can relay a relay MAC frame corresponding to the destination group identifier.
- a step of setting a relay port search table for recording so as to be searchable and updateable, and the step of determining whether or not there is one or more relay ports that transfer the relay MAC frame It is assumed that the relay port search table includes a search step with the specified destination group identifier.
- the physical of a node configured by all edge transfer devices and relay transfer devices connected to the relay network Based on the topology and topology information indicating the relay port connecting each node, the route to which the relay MAC frame is forwarded to one or more destinations specified by the destination group identifier is obtained and used for the forwarding.
- destination route setting information for recording a MAC frame transmission source and a set of a single V and a plurality of destinations in association with a destination group identifier so as to be searchable and updatable.
- a step of setting a table a step of allowing a network administrator to input a plurality of destination sets, and searching the destination route setting information table to correspond to one or a plurality of destination sets input above.
- the destination group identifier is acquired, the acquired destination group identifier is output.
- an unused destination group identifier is newly assigned and stored in the destination route setting information table.
- the physical connection form of the nodes constituted by all edge transfer devices and relay transfer devices connected to the relay network and the topology information indicating the relay ports connecting each node are searched.
- a step of setting a relay port search table to be recorded so as to be searchable and updateable, and an edge transfer device and a relay transfer device used to transfer a given destination group identifier to a relay MAC frame having the destination group identifier, and those A step of setting a relay route setting information table that is recorded so as to be searchable and updated in association with a set of relay ports, and the topology information table when a destination group identifier is newly registered in the destination route setting information table.
- an edge transfer used for the transfer is determined for a route through which the relay MAC frame having the newly assigned destination duplex identifier is forwarded to one or more destinations specified by the destination group identifier.
- an edge transfer apparatus for joining a subscriber local area network to a relay network to join the virtual local area network.
- the edge transfer device includes at least one subscriber port that transmits / receives a MAC frame to / from the subscriber local area network, and at least one relay port that transmits / receives a relay MAC frame to / from the relay network.
- the destination group identifier search module searches for the destination group identifier search table by at least one of the service VLAN identifiers to be acquired, and the destination group identifier search module acquires the destination group identifier.
- a relay port search module for searching for one or more relay ports that transfer the MAC frame from the at least one relay port in the relay port search table according to the destination group identifier when acquired. And at least one of the relay port search module and the relay port search module.
- one or more relay ports that transfer the MAC frame can be transmitted, and other relay ports cannot transmit Identifying a service VLAN identifier corresponding to the MAC frame from a control module and a subscriber port from which the MAC frame is received, generating a relay MAC frame including at least the MAC frame and the service VLAN identifier, and A MAC relay unit that forwards to one or more relay ports searched by the relay port search module; and A destination group identifier assigning module for assigning a destination group identifier acquired by the destination group identifier search module to a relay MAC frame transferred to one or more relay ports.
- a plurality of subscriber local area network capabilities are connected to a relay network via a plurality of edge transfer devices each having at least one subscriber port and at least one relay port.
- a system for suppressing flooding in the relay network of the virtual local area network realized by the above is provided.
- This system is characterized in that the plurality of edge transfer devices include the edge transfer device.
- the system is at least connected to at least two of the plurality of edge transfer devices and other relay transfer devices constituting the relay network.
- a relay transfer device having two relay ports can be further included.
- This relay transfer device for example, has one or more destination group identifier extraction modules that extract the destination group identifier of the relay MAC frame received through the relay network and its relay port, and the destination group identifier.
- the relay MAC frame is transferred from the relay port other than the received relay port among the at least two relay ports in the relay port search table by the destination group identifier of the relay MAC frame extracted by
- the relay port search module that searches for the above relay ports and the relay port search module described above.
- transmission control is performed to enable transmission of one or more relay ports for the transfer and disable transmission of other relay ports.
- the module may include a MAC relay unit that transfers the relay MAC frame to one or more relay ports searched by the relay port search module.
- the system may further include an operation device having a function of inputting and outputting by a network administrator.
- the operation for example, a destination route setting information table that records a set of MAC frame transmission sources and one or a plurality of destinations in association with a destination group identifier so as to be searchable and updatable, and network administrator input.
- the destination route setting information table search module for searching the destination route setting information table by a plurality of destination sets and the destination route setting information table search module correspond to the one or more input destination sets.
- a destination group identifier registration output module that outputs the destination group identifier assigned to Based on the destination routing information table including the newly assigned destination group identifier, one of the plurality of edge transfer apparatuses that is the destination of the relay MAC frame having the destination group identifier!
- a destination group identifier update module for updating a destination group identifier search table possessed by each of the plurality of edge transfer apparatuses, and all edge transfer apparatuses connected to the relay network for a given destination group identifier, and
- the topology information indicating the physical connection form of the nodes configured by the relay transfer device and the topology information indicating the relay port connecting each node is recorded so as to be searchable and updatable, and the destination group identifier registration output module is used to When a new destination group identifier is registered in the routing information table, Search the topology information table, find the route through which the relay MAC frame having the newly assigned destination group identifier is forwarded to one or more destinations specified by the destination group identifier, and use it for the forwarding Edge transfer device and relay transfer device, route calculation unit for outputting those relay ports, edge transfer device and relay used for transfer of relay MAC frame having given destination group identifier as destination group identifier
- a transfer route, a relay route setting information table that records in a searchable and upd
- the relay route setting information table updating module for updating Le, the relay path
- all the edges are based on the updated relay route setting information table.
- each relay port in the relay port search table that each of the edge transfer device and the relay transfer device serving as the transfer route of the relay MAC frame having the newly assigned destination group identifier has And a relay port search table update module that updates information on whether or not the relay MAC frame corresponding to the destination group identifier can be relayed.
- FIG. 1 is a block diagram showing a network configuration example to which a flooding suppression method according to a first embodiment of the present invention is applied.
- FIG. 2 (a) is a functional block diagram showing a configuration example of an edge transfer device to which the flooding suppression methods according to the first and second embodiments of the present invention are applied, and (b) is a flash block diagram.
- FIG. 5 is a block diagram showing a configuration example of means (module) for controlling an edge transfer device in a system for suppressing ding.
- FIG. 3 (a) is a functional block diagram showing a configuration example of a relay transfer apparatus to which the flooding suppression method according to the first and first embodiments of the present invention is applied, and (b) FIG. 3 is a block diagram showing a configuration example of a means (module) for controlling a relay transfer device in a system for suppressing ding.
- FIG. 4 (a) is a functional block diagram showing a configuration example of an operation device to which the flooding suppression methods according to the first and second embodiments of the present invention are applied, and (b) is a flooding. It is a block diagram which shows the structural example of the means (module) which controls the operation apparatus in the system for suppression.
- FIG. 5 is a format diagram of a MAC frame transmitted and received at a subscriber port of an edge transfer apparatus to which the flooding suppression method according to the first and second embodiments of the present invention is applied.
- FIG. 6 is a block diagram showing a configuration example of a network to which the flooding suppressing method according to the second embodiment of the present invention is applied.
- FIG. 7 The flooding suppression method according to the first and second embodiments of the present invention is applied.
- Fig. 2 is a format diagram (part 1) of a relay MAC frame transmitted and received at a relay port of a bridge transfer device and a relay transfer device.
- FIG. 8 is a format diagram of an edge transfer device to which the flooding suppression method according to the first and second embodiments of the present invention is applied and a relay MAC frame transmitted and received at the relay port of the relay transfer device (part 2). ).
- FIG. 9 is a format diagram of an edge transfer device to which the flooding suppression method according to the first and second embodiments of the present invention is applied and a relay MAC frame transmitted and received at the relay port of the relay transfer device (part 3). ).
- FIG. 10 Format diagram of relay MAC frame transmitted and received at the relay port of the edge transfer device and relay transfer device to which the flooding suppression method according to the first and second embodiments of the present invention is applied (part 4) It is.
- FIG. 11 is a flowchart showing an outline of the operation of the flooding suppression method according to the first embodiment of the present invention.
- the flooding suppression method receives the MAC frame as a part or all of the header information of the edge transfer device power MAC frame as shown in the operation flowchart of FIG.
- a destination group identifier search table that can search for a destination group identifier using a combination of one or more of the service port and the service VLAN identifier corresponding to the MAC frame as a key, and a plurality of or It has a relay port search table that can search for a single relay port or multiple or a single relay port that does not transmit, and when the edge forwarding device receives a MAC frame from a subscriber port (step A), The header information of the frame, the port that received the MAC frame, and the service VLAN identifier corresponding to the MAC frame The destination group identifier search table using the combination of one or more keys as a key (step B), the destination group identifier search step in this destination group identifier search step, and the MAC When the frame is transferred to one or more relay ports by the
- the main feature is to include the steps to make impossible (Steps H, I).
- a virtual local area network is realized by connecting multiple subscriber local area networks to a relay network via multiple edge transfer devices.
- the edge transfer device is connected to a subscriber site and transmits / receives MAC frames to / from the subscriber site and a relay network connected to the relay network. It has one or more relay ports that send and receive relay MAC frames.
- One or more service VLAN identifiers corresponding to the subscriber port are predetermined.
- the service VLAN identifier corresponding to the subscriber port can be associated with the MAC frame received from the subscriber port. Therefore, when a MAC frame is received from a subscriber port, the service VLAN identifier corresponding to the MAC frame is specified from the subscriber port.
- the relay MAC frame includes at least a MAC frame, a service VLAN identifier corresponding to the MAC frame, a source address corresponding to the source in the relay network, and a destination address corresponding to the destination.
- the edge transfer apparatus has a MAC relay unit that transfers a MAC frame or a relay MAC frame received from each port according to a predetermined condition.
- a MAC relay unit that transfers a MAC frame or a relay MAC frame received from each port according to a predetermined condition.
- the MAC frame is forwarded to the subscriber port (first relay processing), (2) the relay MAC frame including the MAC frame and the service VLAN identifier corresponding to the MAC frame is to be forwarded to one or more If there is a relay port, the corresponding MAC frame is transferred to the corresponding I port (second relay processing). One or both of the transfer processes (1) and (2) can be performed. On the other hand, if the predetermined conditions for performing the forwarding process (1) and (2) are not met, the MAC frame is discarded.
- the relay MAC frame is sent to the MAC relay unit.
- the following transfer processing is performed. That is, (3) if there is a plurality of subscriber ports corresponding to the service VLAN identifier corresponding to the MAC frame, the MAC frame is transferred to the corresponding subscriber port (third relay process), ( 4) If there is one or more relay ports to be transferred other than the relay port that received the relay MAC frame, transfer the MAC frame to the corresponding relay port (the fourth Relay processing). Either or both of the transfer processes (3) and (4) can be performed. On the other hand, when the predetermined condition for performing the transfer processing of (3) and (4) is not satisfied, the relay MAC frame is discarded.
- a destination relay port, a destination subscriber port, a destination edge transfer device, or a destination MAC address is used as a destination for transferring a MAC frame.
- a destination group identifier that identifies the combination of destinations to which the relay MAC frame is transferred is predetermined.
- the edge transfer device uses a combination of one or more of the header information of a MAC frame, a port that has received the MAC frame, and one or more service VLAN identifiers corresponding to the MAC frame as a destination group.
- the destination group identifier search table that can search for identifiers and the destination group identifier as a key, It has one or more relay ports to transmit, or a relay port search table that can search one or more relay ports that do not transmit.
- the edge transfer device capability MAC frame is received from a subscriber port, the header information of the MAC frame, the port that received the MAC frame, and the service VLAN identifier corresponding to the MAC frame
- a destination group identifier is searched from the destination group identifier search table using one or more combinations as keys (destination loop identifier search step). If the destination group identifier is searched in this destination group identifier search step, and the MAC frame is forwarded to one or more relay ports by the MAC relay unit, the service VLAN identifier corresponding to the MAC frame is included.
- the searched destination group identifier is assigned to a predetermined location of the relay MAC frame (destination group identifier assigning step).
- a relay port is searched from the relay port search table using the searched destination group identifier as a key (relay port search step). If one or more relay ports to be transmitted are searched in this relay port search step, the relay MAC frame can be transmitted to the relay port, and one or more relay ports not to be transmitted are searched. The relay MAC frame cannot be transmitted to the relay port.
- the edge transfer device may give the destination group identifier as a destination address of the relay MAC frame. However, as shown in FIG. If the forwarding VLAN identifier corresponding to the MAC frame is at least included, the edge forwarding device may give the destination group identifier as the forwarding VLAN identifier of the relay MAC frame. Further, the edge transfer device may give the destination group identifier as a service VLAN identifier of the relay MAC frame. Alternatively, the edge transfer device may use the destination group identifier as a service of the relay MAC frame. It may be given as a set of VL AN identifier and destination address.
- a flooding suppression method at least one of setting, operation, management, and monitoring of the edge transfer device and one or more edge transfer devices is performed.
- An operation device with input / output functions from the network administrator A method for suppressing flooding in a network system in which one or a plurality of the above are combined is provided.
- the operation device has a destination route setting information table in which a destination group identifier can be searched using a set of a plurality of destinations to which a MAC frame is transferred as a key.
- This method includes a destination route setting information table search step of searching a destination route setting information table using a plurality of destination sets as a key when a plurality of destination sets are input.
- the destination group identifier When the destination group identifier is searched in the destination route setting information table search step, the destination group identifier is output. When the destination group identification is not searched in the destination route setting information table, the plurality of destinations are output. A destination group identifier output step of newly assigning an unused destination group identifier to the set, registering the combination in the destination route setting information table, and outputting the destination group identifier.
- a flooding suppression method in a network system in which an operation device having an input / output function from a network administrator and one or more relay transfer devices are combined.
- the relay transfer device has a single or multiple relay ports that transmit and receive relay MAC frames from the relay network, and when the relay MAC frame is received from the relay port, forwards the relay MAC frame to the MAC relay unit.
- the MAC relay unit forwards the relay MAC frame to one or a plurality of relay ports other than the relay port unit that received the relay MAC frame (fifth relay process), or The relay MAC frame is discarded.
- the relay transfer device has a relay port search table that can search for one or a plurality of relay ports to be transmitted or one or a plurality of relay ports not to be transmitted using a destination group identifier as a key.
- a destination group identifier extraction step of extracting a destination group identifier from the relay MAC frame, and this destination group identifier extraction
- a relay port search step for searching for a relay port from the relay port search table, and one or more relay ports to be transmitted in this relay port search step. If a relay port is searched, the relay MAC frame can be transmitted to the relay port. If one or more relay ports are not transmitted, the relay MAC frame cannot be transmitted to the relay port.
- a flooding suppression method As a flooding suppression method according to still another embodiment of the present invention, at least one of setting, operation, management, and monitoring of the edge transfer device and one or more edge transfer devices is performed, and network management is performed.
- a flooding suppression method in a network system in which one or a plurality of operation devices having an input / output function and a relay transfer device are combined.
- the relay transfer device includes one or a plurality of relay ports that transmit and receive a relay MAC frame from a relay network. When the relay MAC frame is received from the relay port, the relay MAC frame is transferred to the MAC relay unit.
- the MAC relay unit transfers the relay MAC frame to one or a plurality of relay ports other than the relay port unit that has received the relay MAC frame (fifth relay process), or else the relay MAC frame Discard the MAC frame.
- the operation device is connected to the device with the function of performing at least one of setting, operation, management and monitoring of one or more relay transfer devices and the edge transfer device or relay transfer device as a key.
- the topology information table that can search for edge transfer devices or relay transfer devices and the relay ports at both ends of the connection, and the topology information table using multiple destinations as keys, and multiple routes that are routes between the multiple destinations
- Relay path setting information that can search for one or more pairs of edge transfer devices or relay transfer devices and relay ports using the destination group identifier as a key
- a route calculation unit that outputs the edge transfer device or relay transfer device and its relay port And a table.
- the plurality of destinations are input to the route calculation unit, and a plurality of edge transfer apparatuses or relay transfer apparatuses and relay ports are output; a destination group identifier corresponding to the plurality of destination sets; and the output result A step of registering the set of information in the relay route setting information table, a step of sending setting information of the corresponding relay port to each edge transfer device and relay transfer device included in the output result, and an edge transfer device And a relay transfer device from the operation device to the step.
- the relay port setting is changed according to the setting information.
- the flooding suppression method according to the present invention uses the destination relay port, the destination subscriber port, the destination edge transfer device, and the destination MAC address! /, I prefer to use either!
- a flooding suppression device is a flooding suppression device that uses the flooding suppression method.
- the edge transfer device uses a combination of one or more of the header information of the MAC frame, the port that received the MAC frame, and the service VLAN identifier corresponding to the MAC frame as a key.
- a destination group identifier search table that can search for destination group identifiers, and a relay port search table that can search for one or more relay ports to be transmitted or one or more relay ports that are not transmitted using destination group identifiers as keys.
- the relay port When a relay port search means for searching for a relay port from the search table and one or more relay ports to be transmitted by the relay port search means are searched, the relay MAC frame can be transmitted to the relay port and transmitted. When one or more relay ports that are not found are searched, the relay MAC frame includes transmission control means for disabling transmission to the relay port.
- the flooding suppression device of the present invention is added to the above-described configuration.
- at least one of the setting, operation, management, and monitoring of one or more edge transfer devices is used, and an operation device equipped with an input / output function of a network administrator is used in a network system that combines one or more. It can also be specified as a flooding suppression device.
- the operation device has a destination route setting information table in which a destination group identifier can be searched using a set of a plurality of destinations that transfer MAC frames as a key.
- the flooding suppression apparatus searches the destination route setting information table by using the plurality of destination sets as a key when the operation apparatus is inputted with a plurality of destination sets by the network administrator.
- the destination group identifier When a destination group identifier is searched by the destination route setting information table search means and the destination route setting information table search means, the destination group identifier is output, and the destination group identification is performed in the search step of the destination route setting information table. If a search is not successful, an unused destination group identifier is newly assigned to the plurality of destination pairs, the combination is registered in the destination route setting information table, and the destination group identifier is output. Output means.
- the flooding suppression apparatus of the present invention further includes one or more relay ports that transmit and receive a relay MAC frame from a relay network in addition to the above configuration, and when the relay MAC frame is received from the relay port The relay MAC frame is transferred to a MAC relay unit, and the MAC relay unit transfers the relay MAC frame to one or more relay ports other than the relay port unit that has received the relay MAC frame. It is also possible to specify a flooding suppression apparatus used in a network system in which one or a plurality of relay transfer apparatuses that perform five relay processes or otherwise discard the relay MAC frame are combined.
- the relay transfer device has a relay port search table in which one or a plurality of relay ports to be transmitted or one or a plurality of relay ports not to be transmitted can be searched using a destination group identifier as a key.
- the flooding suppression apparatus includes a destination group identifier extraction unit that extracts a relay MAC frame power destination group identifier when the relay transfer device receives a relay MAC frame from a relay port, and the destination group Using the destination group identifier extracted by V as the identifier extraction means as a key,
- the relay MAC frame can be transmitted to the relay port, and one or more relay ports are not transmitted.
- the relay MAC frame includes transmission control means for making transmission impossible to the relay port.
- the operation device in the flooding suppression device of the present invention includes at least one of setting, operation, management, and monitoring of one or more relay transfer devices.
- the edge transfer device or relay transfer device as a key, the topology information table that can search the edge transfer device or relay transfer device connected to that device, and the relay ports at both ends of the connection, and multiple destinations
- the topology information table is searched using as a key, a plurality of edge transfer devices or relay transfer devices that are routes between the multiple destinations, a route calculation unit that outputs the relay port, and a destination group identifier as a key.
- One or a plurality of edge transfer devices or relay transfer devices and a relay route setting information table capable of searching for a set of relay points In this case, when the flooding suppressing device receives a new address group identifier corresponding to the plurality of destination groups when the network administrator power is input to the plurality of destination sets, Output means for inputting a plurality of destinations to the route calculation unit and outputting a plurality of edge transfer devices or relay transfer devices and relay ports, a set of destination duplex identifiers corresponding to the plurality of destination sets and the output results
- Relay route setting information table registration means for registering the information in the relay route setting information table, and relay port setting information for sending the corresponding relay port setting information to each edge transfer device and relay transfer device included in the output result
- the sending means, the edge transfer device, and the relay transfer device receive the setting information as output from the setting information sending means of the relay port from the operation device. When it is received, it can be specified as including relay port setting changing means for changing the setting of the relay port according to the setting information.
- an edge transfer apparatus that provides a virtual LAN service to a subscriber is a subscriber that transmits and receives a MAC frame 12 having a format as shown in FIG. 5 from the subscriber site.
- a relay port that transmits and receives relay MAC frames from the relay network.
- Providers can identify individual virtual LANs provided to subscribers by identifying service VLANs. Identify with a separate child.
- Figure 7 ⁇ As shown in L0, there are various formats for the relay MAC frames 13, 14, 15, and 16 that are transmitted and received from the relay port, all of which are MAC frames and the services that this MAC frame supports. VL AN identifier is encapsulated.
- the edge transfer device in the flooding suppression method When receiving an MAC frame from a subscriber site, the edge transfer device in the flooding suppression method according to the embodiments of the present invention receives the MAC frame header information, the received subscriber port, and the service VLAN identifier. Check and assign the corresponding destination group identifier to the MAC frame.
- the destination group identifier is given in the form of relay MAC frame destination address, forwarding VLAN identifier, service VLAN identifier, combination of destination address and service VLAN identifier, or any format, and is given to the relay MAC frame. .
- the edge transfer device and the relay transfer device transfer the relay MAC frame to which the destination group identifier is assigned by the above means, the destination group identifier is inspected before the transfer and whether or not transmission is possible from the relay port. To do.
- the present invention provides a method for suppressing flooding of a MAC frame of a subscriber in a virtual LAN service provided by the provider to the subscriber as compared with the prior art. It is only necessary to inspect a single part of the header of the relay MAC frame, and it is not necessary for all devices on the route to implement a control protocol or to browse the route information of higher layers. The most different point is that the embodiment can provide a flooding suppression method in which the transfer device (relay transfer device) on the path does not need to hold the setting information distinguished for each subscriber.
- the edge transfer apparatus transmits the MA from the subscriber site to the MA.
- the header information of the MAC frame, the received subscriber port, the service VLAN identifier are inspected and the corresponding destination group identifier is assigned to the MAC frame. It only has to inspect a single location in the header of the relay MAC frame, and the first advantage is that all devices on the route implement the control protocol or pass the route information of the above layer. There is a second advantage that there is no need to look at it, and there is a third advantage that, depending on the embodiment, there is no need for the transfer device on the network to hold the setting information distinguished for each subscriber.
- Example 1 a flooding suppression method as a MAC frame transfer method and a MAC frame flooding according to the first embodiment of the present invention are described.
- the suppression device will be described.
- FIG. 1 is a block diagram showing an example of a network configuration to which the flooding suppression method according to the first embodiment of the present invention is applied.
- the relay network 1 according to the present embodiment includes a plurality of edge transfer apparatuses 2A to 2E and a plurality of relay transfer apparatuses 3A to 3E.
- the relay network 1 includes the edge transfer apparatus 2A.
- the operation device 5 is connected to all devices 2A to 2E (edge transfer devices) and 3A to 3E (relay transfer devices) of the relay network 1.
- the relay apparatuses 2A to 2E and 3A to 3E of the relay network 1 are bridges or switches each including a not shown processor and memory (RAM, ROM, flash memory, etc.).
- the method according to the embodiment of the present invention can be distributed and stored via a computer readable medium in the form of a program instruction (code), and can be stored in a memory of each transfer device or an external storage device as a combination of processing modules. It is stored and implemented in the network system.
- FIG. 2 shows a configuration example of the edge transfer apparatus in the present embodiment.
- the edge transfer device 2A includes a plurality of subscriber ports 2A—C1 to 2A—C3, a plurality of relay ports 2-8: 61 to 2-8: 63, and a MAC relay.
- the number of subscriber ports and relay ports can be determined as needed.
- the communication port can be replaced with a subscriber port or a relay port.
- FIG. 2B shows a configuration example of a means (module) for controlling the edge transfer device 2A in the system SYS for suppressing flooding according to the present embodiment.
- the system SYS includes a destination group identifier search module 50, a relay port search module 52, a transmission control module 54, and a destination group identifier assignment module 56, as shown in FIG.
- the destination group identifier search module 50 is connected to the destination group identifier search table 2A—T1, and searches the destination group identifier search table 2A—T1 when the edge transfer device 2A receives a MAC frame or a relay MAC frame. Then, the destination group identifier is acquired.
- the relay port search module 52 is connected to the relay port search table 2A—T2, searches the relay port search table 2A—T2 with the acquired destination group identifier, and has the MAC frame having the destination group identifier.
- the transmission control module 54 and the destination group identifier assigning module 56 are connected to the MAC relay unit 2A-R, and perform processing based on the determination result. That is, when the relay port search module 52 searches the relay port search module 52 for one or more relay ports that transfer the MAC frame or relay MAC frame from the at least one relay port, Enable one or more relay ports to transmit and disable other relay ports to transmit. If it is determined that the MAC frame received from the subscriber port should be transferred, the MAC relay unit 2A-R adds data such as the service VLAN identifier to generate a relay MAC frame.
- the destination group identifier assigning module 56 adds the destination group identifier acquired by the destination group identifier search module 50 to the relay MAC frame transferred to the one or more relay ports by the MAC relay unit 2A-R.
- the module (50, 52, 54, 56) and the table (2A-Tl, 2 ⁇ - ⁇ 2) are usually stored externally in the memory in the edge transfer device 2 ⁇ , for example, the communication port 2 ⁇ -1 Configure it to control the edge transfer device 2 via.
- FIG. 3 shows a configuration example of the relay transfer apparatus according to this embodiment.
- the relay transfer device 3A includes a plurality of relay ports 3-8-81-3, MAC relay unit 3A-R, relay port search table 3A-T2, communication port 3A. — Has one. The number of relay ports can be determined as needed. The communication port is a relay port. It is also possible to substitute with a cart.
- FIG. 3B shows a configuration example of a means (module) for controlling the relay transfer device 3A in the system SYS for suppressing flooding according to the present embodiment.
- the system SYS includes a destination group identifier extraction module 60, a relay port search module 62, and a transmission control module 64, as shown in FIG.
- the destination group identifier extraction module 60 extracts the destination group identifier from the relay MAC frame received from the relay network 1 via the relay port.
- the relay port search module 62 is connected to the relay port search table 3A-T2, and the relay port search table 3A-T2 is determined based on the destination group identifier of the relay MAC frame extracted by the destination group identifier extraction module 60.
- a search is performed to determine whether one or more relay ports that transfer the relay MAC frame are present in relay ports other than the received relay port among the at least two relay ports.
- the transmission control module 64 is connected to the MAC relay unit 3A-R, and the relay port search module 62 uses the relay port search module 62 to transfer one or more relay ports from among the at least one relay port.
- the module (60, 62, 64) and the table (3A-T2) are usually stored externally in a memory stored in the memory in the relay transfer device 3A, for example, relayed via the communication port 3A-1
- the transfer apparatus 3A may be controlled.
- FIG. 4 shows a configuration example of means (module) for controlling the operation device 5 in the system SYS for suppressing flooding according to the present embodiment.
- the system SYS as shown in FIG.
- destination route setting information table search module 70 includes a destination route setting information table search module 70, a destination group identifier registration output module 72, a destination group identifier update module 74, a relay route, A setting information table update module 76 and a relay port table update module 78 are included.
- Destination route setting information table search module 70 and destination group The identifier registration output module 72 is connected to the destination route setting information table 5-Tl.
- the destination route setting information table search module 70 searches the destination route setting information table 5-T1 by using a plurality of destination sets that are also input by the network administrator through the administrator input / output 5-2.
- the destination group identifier registration output module 72 when the destination route setting information table search module 70 acquires destination group identifiers corresponding to the inputted one!
- the acquired destination group identifier is output, and when it is not acquired, an unused destination group identifier is newly assigned and registered in the destination route setting information table 5-T1. Outputs the destination group identifier.
- the destination group identifier update module 74 is based on the destination routing information table 5-T1 including the newly assigned destination group identifier, and is connected to the network 1 among all edge transfer devices connected to the network 1. Then, the destination group identifier search table (for example, 2A-T1 in FIG. 2) possessed by each of one or more edge transfer apparatuses that are the destinations of the relay MAC frame having the destination group identifier is updated.
- the topology information table 5-T2 is a node configured by all edge transfer apparatuses 2A to 2E and relay transfer apparatuses 3A to 3E connected to the relay network 1 for a given destination duplication identifier.
- the topology information indicating the physical connection form and the relay port connecting each node is recorded so as to be searchable and updatable.
- the route calculator 5-3 searches the topology information table 5-T2 when a destination group identifier is newly registered in the destination route setting information table 5-T1 by the destination group identifier registration output module 72.
- the relay MAC frame having the newly assigned destination group identifier is identified by the destination group identifier, and a route to be transferred to one or a plurality of destinations is obtained, and the edge transfer device and the relay used for the transfer are obtained.
- Relay routing information table 5 contains a given destination group identifier, an edge transfer device and a relay transfer device used to transfer a relay MAC frame having the destination group identifier, and a set of those relay ports. Corresponding records are recorded so that the search can be updated.
- the relay route setting information table update module 76 is connected to the relay route setting information table 5-T3, and the newly assigned destination group identifier and the output Eth The relay route setting information table 5-T3 is updated by registering a pair of relay transfer devices and relay transfer devices and their relay ports.
- the relay port search table update module 78 Based on the updated relay route setting information table 5-T3, the relay MAC frame having the newly assigned destination group identifier among all edge transfer devices and relay transfer devices connected to the relay network 1 is selected.
- Each relay port in the relay port search table (for example, 2A-T2 or 3A-T2) that the edge transfer device and relay transfer device that serve as the transfer route respectively can relay the relay MAC frame corresponding to the destination group identifier Updates information about power.
- the modules (70, 72, 74, 76, 78) and the tables (5-Tl, 5— ⁇ 2, 5— ⁇ 3) are usually stored externally in the force stored in the memory in the operation device 5, for example
- the operation device 5 may be controlled via the communication port 5-1.
- the user MAC frame has information on a destination MAC address, a source MAC address, a VLAN tag 12a, and user data.
- the VLAN tag 12a includes information such as priority and VLAN identifier.
- user MAC frames without VLAN tags are transferred.
- User MAC frame format 12 conforms to a series of IEEE 802 standards.
- the subscriber network 4A has a logical network of VLAN 10: 4A-1 inside, and a terminal 4A-11 is connected in the VLAN 10: 4A-1.
- the subscriber network 4B has a logical network of VLA N 10: 4B-1 and VLAN 20: 4B-2 inside, and the terminal 4B-11 is connected in VLAN 10: 4B-1! Speak.
- Subscriber network 4C has a logical network of VLAN 10: 4C-1 and VLAN 20: 4C-2 inside, and terminal 4C-21 is connected to VLAN 20: 4C-2.
- the subscriber network 4D has a logical network of VLAN 20: 4D-2 inside, and the terminal 4D-21 is connected to the VLAN 20: 4D-2!
- the subscriber networks 4A, 4B, 4C, 4D belong to a single service VLAN 100.
- the subscriber networks 4A, 4B, 4C, 4D belong to a single service VLAN 100.
- the destination group identifier is assigned as the destination address of the relay MAC frame.
- the destination edge transfer apparatus is used as the destination to which the MAC frame is transferred.
- the network administrator sends the operation device 5 to the VLANs 10: 4A-1 belonging to the subscriber networks 4A, 4B, 4C of the service VLAN 100 through the administrator input / output 5-2. , 4B—1, 4C—When the edge transfer devices 2A, 2B, 2C that are the destinations of 1 are input, the operation device 5 searches the destination route setting information table 5—T1 using the set of edge transfer devices as a key. If the destination group identifier is searched, the search result is assigned as the destination group identifier for VLAN 10 of service VLAN 100.If the destination group identifier is not found, a new destination group identifier is assigned. A new edge transfer device pair is registered, and a combination with a destination group identifier is registered in the destination route setting information table 5-T1.
- a combination of the service VLAN 100 and VLAN 10 and the destination group identifier obtained by any one of the above means is set in the edge transfer apparatuses 2A, 2B, and 2C through the communication port 5-1.
- the edge transfer apparatuses 2A, 2B, 2C receive the setting through the communication port 2A-1, etc., and register them in the destination group identifier search table 2A-T1.
- the operation device 5 inputs the set of edge transfer devices to the route calculation unit 5-3 to calculate the route.
- the unit 5-3 refers to the topology information table 5-T2, and the edge transfer devices 2A, 2B, 2C and the relay transfer devices 3A, 3B, 3B, which serve as a route for relaying between the edge transfer devices 2A, 2B, 2C. 3C and its relay port are output, the destination group identifier and the output result pair are registered in the relay route setting information table, and the edge transfer devices 2A, 2B, 2C, The relay port setting information is sent to the relay transfer devices 3A, 3B, 3C.
- Edge transfer devices 2A, 2B, 2C, relay transfer devices 3A, 3B, 3C receive the above settings through communication port 3A-1, etc., and register them in relay port search tables 2A—T2, 3A—T2. To do.
- the MAC frame is received from the terminal 4A-11 in the subscriber network 4A to the edge transfer apparatus 2A.
- the format of the received MAC frame is MAC frame format 12.
- the destination MAC address of this MAC frame is the broadcast address, and the source MAC address is the source terminal 4A-11 in the subscriber network 4A.
- the VLAN identifier represents the VLAN number to which the source terminal and destination terminal belong. In this MAC frame, the VLAN identifier is 10.
- the edge transfer device 2A searches the MAC frame by the MAC relay unit 2A-R, but is not a specific destination. Therefore, the service VLAN identifier determined from the received subscriber port and the VLAN of the MAC frame Based on the identifier, the destination group identifier table 2A—T 1 is searched, and the destination group identifier of the MAC frame is searched. When the destination group identifier is searched by the search means, the destination address of the relay MAC frame for transferring the MAC frame becomes the destination group identifier.
- the edge transfer apparatus 2A searches the relay port search table 2A-T2 based on the destination group identifier to obtain a relay port that can transfer the relay MAC frame.
- the relay MAC frame is transmitted to the relay port obtained by the search means.
- the relay MAC frame arrives at the relay transfer device 3C via the relay transfer device 3A.
- the relay transfer device 3C that has received the relay MAC frame searches the relay MAC frame with the MAC relay unit 2A-R but is not a specific destination, so the relay MAC frame power also extracts the destination address, Based on the destination address, the relay port search table SATS is searched to obtain a relay port that can transfer the relay MAC frame.
- the relay port of the relay transfer device 3C connected to the relay transfer device 2E is not searched.
- the relay port search table is searched in the relay transfer device 3D, the relay port connected to the edge transfer device 3E is not searched!
- the relay MAC frame arrives only at edge transfer apparatuses 2B and 2C.
- the edge transfer devices 2B and 2C extract the MAC frame from the relay MAC frame and send it to the subscriber network 4C and the subscriber network 4D, respectively.
- FIG. 1 A configuration example of the network in the present embodiment is shown in FIG. Detailed description of the same parts as those in the example of FIG. 1 in the first embodiment will be omitted. Since the configuration examples of the edge transfer device and the relay transfer device are the same as those of the first embodiment (Example 1), they are omitted.
- the subscriber network 4A is connected to a terminal 4A-31 that receives the multicast group 10!
- Subscriber network 4B is connected to terminals 4B-31 that receive multicast group 10.
- the subscriber network 4C is connected to the terminal 4C-31 that receives the multicast group 10.
- the subscriber network 4D does not receive the multicast group 10, and the terminal 4D-31 is connected.
- the destination group identifier is given as the destination address of the relay MAC frame.
- the destination edge transfer device is used as the destination for transferring the MAC frame.
- An address or the like can be used.
- 4C When the edge transfer devices 2A, 2B, and 2C, which are 31 destinations, are input, the operation device 5 searches the destination route setting information table using the set of edge transfer devices as a key, and the search means uses the destination group identifier. If a destination group identifier is not found, a new destination group identifier is assigned, and the set of edge transfer devices and the new U are assigned. ⁇ ⁇ ⁇ ⁇ ⁇ Register the combination with the destination group identifier in the destination route setting information table. Service VLAN100, The setting is received through the communication port 5-1 for the combination of the multicast group 10 and the destination group identifier obtained by any of the above means, and registered in the destination group identifier search table 2A-T1.
- the operation device 5 When a destination group identifier is newly assigned as a result of the search means, the operation device 5 inputs the set of edge transfer devices to the route calculation unit 5-3, and the route calculation unit 5-3 receives the topology.
- Information table 5 Referring to T2, the edge transfer devices 2A, 2B, 2C, the relay transfer devices 3A, 3B, 3C, and the relay ports that serve as a route for relaying between the edge transfer devices 2A, 2B, 2C Output, register the destination group identifier and the output result pair in the relay route setting information table, and include the edge transfer devices 2A, 2B, 2C, and relay transfer devices 3A, 3B included in the output result through the communication port 5-1. , Sends relay port setting information to 3C.
- the edge transfer devices 2A, 2B, 2C and the relay transfer devices 3A, 3B, 3C receive the above settings through the communication port 3A-1, etc., and register them in the relay port search tables 2A-T2, 3A-T2. .
- the MAC frame is received by the edge transfer device 2A from the terminal 4A-11 in the subscriber network 4A.
- the format of the received MAC frame is MAC frame format 12.
- the destination MAC address of this MAC frame is the multicast address indicating the multicast group 10, and the source MAC address is the source terminal 4A-11 in the subscriber network 4A. There is no VLAN tag.
- the edge transfer device 2A searches for this MAC frame in the MAC relay unit 2A-R, but is not a specific destination. Therefore, the service VLAN identifier and the MAC frame determined from the received subscriber port 0 are used.
- the destination group identifier search table 2A-T1 is searched based on the multicast address of the destination address, and the destination group identifier of the MAC frame is searched.
- the destination address of the relay MAC frame for transferring the MAC frame becomes the destination group identifier.
- the edge transfer apparatus 2A searches the relay port search table 2A-T2 based on the destination group identifier to obtain a relay port that can transfer the relay MAC frame. Said The relay MAN frame is transmitted to the relay port obtained by the search means. The relay MAC frame arrives at the relay transfer device 3C via the relay transfer device 3A.
- the relay transfer device 3C that has received the relay MAC frame searches the relay MAC frame with the MAC relay unit 2A-R, but is not a specific destination, so the relay MAC frame power also extracts the destination address, Based on the destination address, the relay port search table SATS is searched to obtain a relay port that can transfer the relay MAC frame.
- the relay port search table SATS is searched to obtain a relay port that can transfer the relay MAC frame.
- the relay port of the relay transfer device 3C connected to the relay transfer device 3E is not searched.
- the relay transfer device 3D searches for the relay port search table 3A-T2
- the relay port connected to the edge transfer device 2E is not searched.
- the relay MAC frame arrives only at the edge transfer apparatuses 2B and 2C.
- the edge transfer devices 2B and 2C extract the MAC frame from the relay MAC frame and send it to the subscriber network 4C and the subscriber network 4D, respectively.
- MAC frames are broadcast to all ports except the ones received by the bridge, increasing the possibility that terminals connected to the network will receive MAC frames that do not need to be received.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101867520A (zh) * | 2010-06-12 | 2010-10-20 | 迈普通信技术股份有限公司 | 分布式系统中板卡间数据交换的方法 |
JP2012200026A (ja) * | 2012-07-26 | 2012-10-18 | Alaxala Networks Corp | ネットワークシステム、コアスイッチ、エッジスイッチ、データ中継方法 |
US9240894B2 (en) | 2009-03-26 | 2016-01-19 | Alaxala Networks Corporation | Multicast snooping on layer 2 virtual private network |
JP6357256B1 (ja) * | 2017-03-16 | 2018-07-11 | ソフトバンク株式会社 | 中継装置及びプログラム |
WO2018169083A1 (ja) * | 2017-03-16 | 2018-09-20 | ソフトバンク株式会社 | 中継装置及びプログラム |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006095508A1 (ja) * | 2005-03-08 | 2006-09-14 | Nippon Telegraph And Telephone Corporation | フラッディング抑制方法 |
US20080159290A1 (en) * | 2006-12-28 | 2008-07-03 | Futurewei Technologies, Inc. | Method of Preventing Transport Leaks in Hybrid Switching Networks |
US8149837B2 (en) * | 2007-01-16 | 2012-04-03 | Futurewei Technologies, Inc. | Method of supporting an open provider backbone network |
US7782763B2 (en) * | 2007-03-13 | 2010-08-24 | Alcatel Lucent | Failure protection in a provider backbone bridge network using forced MAC flushing |
US9294345B2 (en) * | 2007-07-06 | 2016-03-22 | Lg Electronics Inc. | Wireless network management procedure, station supporting the procedure, and frame format for the procedure |
CN101159665B (zh) * | 2007-08-28 | 2010-04-14 | 杭州华三通信技术有限公司 | 实现未知组播报文向路由器端口转发的方法和装置 |
US8023518B2 (en) * | 2008-05-02 | 2011-09-20 | Telefonaktiebolaget L M Ericsson (Publ) | Efficient path setup in a provider backbone bridge network |
US7929554B2 (en) * | 2008-12-23 | 2011-04-19 | Cisco Technology, Inc. | Optimized forwarding for provider backbone bridges with both I and B components (IB-PBB) |
US8509248B2 (en) | 2008-12-29 | 2013-08-13 | Juniper Networks, Inc. | Routing frames in a computer network using bridge identifiers |
US7787480B1 (en) * | 2009-03-04 | 2010-08-31 | Juniper Networks, Inc. | Routing frames in a trill network using service VLAN identifiers |
US8199753B2 (en) | 2009-06-05 | 2012-06-12 | Juniper Networks, Inc. | Forwarding frames in a computer network using shortest path bridging |
CN101577647B (zh) * | 2009-06-15 | 2011-07-13 | 中兴通讯股份有限公司 | 一种支持多vlan的告警箱及其告警处理方法 |
US8125928B2 (en) | 2009-07-24 | 2012-02-28 | Juniper Networks, Inc. | Routing frames in a shortest path computer network for a multi-homed legacy bridge node |
US9779057B2 (en) * | 2009-09-11 | 2017-10-03 | Micron Technology, Inc. | Autonomous memory architecture |
JP5392137B2 (ja) * | 2010-02-17 | 2014-01-22 | 富士通株式会社 | 通信処理のためのプログラム、コンピュータ及び方法 |
MX2012007559A (es) | 2010-05-28 | 2012-07-30 | Huawei Tech Co Ltd | Capa 2 virtual y mecanismo para hacerla escalable. |
CN102971992B (zh) * | 2010-06-29 | 2016-03-09 | 华为技术有限公司 | 虚拟专用局域网设备、网络组件和数据帧转发方法 |
CN102404193B (zh) * | 2010-09-17 | 2014-08-13 | 华为技术有限公司 | 生成转发表项、报文转发、地址获取的方法及边缘设备 |
US10097456B2 (en) * | 2011-02-25 | 2018-10-09 | Nokia Technologies Oy | Method and an apparatus for a gateway |
JP5866811B2 (ja) * | 2011-06-10 | 2016-02-24 | 富士通株式会社 | ネットワーク装置、送信先問合せ方法および送信先問合せプログラム |
US9730082B2 (en) * | 2012-08-24 | 2017-08-08 | Intel Corporation | Methods and arrangements to relay packets via Wi-Fi direct |
CN104009926B (zh) * | 2013-02-26 | 2017-04-12 | 杭州华三通信技术有限公司 | Evi网络中的组播方法及边缘设备ed |
JP6064757B2 (ja) * | 2013-04-10 | 2017-01-25 | 富士通株式会社 | 通信システム及び通信方法 |
US20150124646A1 (en) * | 2013-11-01 | 2015-05-07 | Electronics And Telecommunications Research Institute | Device-to-device communication method and apparatus |
JP2015095784A (ja) * | 2013-11-12 | 2015-05-18 | 富士通株式会社 | 情報処理システム、情報処理システムの制御方法及び情報処理装置の制御プログラム |
KR20160011774A (ko) * | 2014-07-22 | 2016-02-02 | 한국전자통신연구원 | 식별자 기반 네트워크 경로 설정 방법 및 장치 |
CN108156014B (zh) * | 2016-12-06 | 2021-08-13 | 华为技术有限公司 | 一种环路故障处理方法和交换机 |
CN108418752B (zh) * | 2017-07-24 | 2019-11-08 | 新华三技术有限公司 | 一种聚合组的创建方法和装置 |
US10523466B1 (en) * | 2017-10-19 | 2019-12-31 | Juniper Networks, Inc. | Aliasing in an active-active multi-homed PBB-EVPN network |
CN110958124B (zh) * | 2019-12-12 | 2022-08-19 | 北京爱奇艺科技有限公司 | 多播组管理方法、装置、可读存储介质、及计算机 |
US11924096B2 (en) | 2022-07-15 | 2024-03-05 | Cisco Technology, Inc. | Layer-2 mesh replication |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003036503A1 (en) | 2001-10-19 | 2003-05-01 | Foundry Networks, Inc. | Method and system for intelligently forwarding multicast packets |
JP2003324468A (ja) * | 2002-05-08 | 2003-11-14 | Hitachi Ltd | データ転送システム及びノード装置 |
JP2004304669A (ja) * | 2003-03-31 | 2004-10-28 | Fujitsu Ltd | パケット通信システム及びパケット通信装置 |
WO2005069551A1 (ja) | 2004-01-16 | 2005-07-28 | Nippon Telegraph And Telephone Corporation | ユーザmacフレーム転送方法、エッジ転送装置、およびプログラム |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5060228A (en) * | 1988-11-19 | 1991-10-22 | Fujitsu Limited | Bridge communication system |
FI91695C (fi) * | 1992-10-05 | 1994-07-25 | Nokia Telecommunications Oy | Menetelmä liikenteen priorisoimiseksi runkoverkon kautta yhteen liitettyjen lähiverkkojen välillä |
US5485455A (en) * | 1994-01-28 | 1996-01-16 | Cabletron Systems, Inc. | Network having secure fast packet switching and guaranteed quality of service |
US5594732A (en) * | 1995-03-03 | 1997-01-14 | Intecom, Incorporated | Bridging and signalling subsystems and methods for private and hybrid communications systems including multimedia systems |
US6041166A (en) * | 1995-07-14 | 2000-03-21 | 3Com Corp. | Virtual network architecture for connectionless LAN backbone |
JPH09130421A (ja) * | 1995-11-02 | 1997-05-16 | Furukawa Electric Co Ltd:The | 仮想ネットワーク管理方法 |
US5684800A (en) * | 1995-11-15 | 1997-11-04 | Cabletron Systems, Inc. | Method for establishing restricted broadcast groups in a switched network |
US5923654A (en) * | 1996-04-25 | 1999-07-13 | Compaq Computer Corp. | Network switch that includes a plurality of shared packet buffers |
US5832236A (en) * | 1996-05-20 | 1998-11-03 | Compaq Computer Corporation | High speed frame translation for computer networks |
JP2944531B2 (ja) * | 1996-09-12 | 1999-09-06 | 日本電気通信システム株式会社 | Lan間接続装置 |
DE69934192T2 (de) * | 1998-10-27 | 2007-08-30 | Hewlett-Packard Development Co., L.P., Houston | Verfahren und Einrichtung zur Netzverbindung mittels Brücken |
US7116672B1 (en) * | 2000-04-07 | 2006-10-03 | Cisco Technology, Inc. | Method and apparatus for reducing flooding in bridged networks |
JP4236398B2 (ja) * | 2001-08-15 | 2009-03-11 | 富士通株式会社 | 通信方法、通信システム及び通信接続プログラム |
JP4108950B2 (ja) * | 2001-09-12 | 2008-06-25 | 株式会社エヌ・ティ・ティ・ドコモ | ハンドオーバ制御装置、無線端末機、エッジルータ、ルータ、移動通信システム及びハンドオーバ制御方法 |
US6999418B2 (en) * | 2001-12-21 | 2006-02-14 | Fujitsu Limited | System and method for reduced frame flooding |
US7339929B2 (en) * | 2002-08-23 | 2008-03-04 | Corrigent Systems Ltd. | Virtual private LAN service using a multicast protocol |
JP4052956B2 (ja) * | 2003-02-07 | 2008-02-27 | 富士通株式会社 | Rprネットワークシステム,ステーションノード,ブリッジノード及びrprカード |
WO2006095508A1 (ja) * | 2005-03-08 | 2006-09-14 | Nippon Telegraph And Telephone Corporation | フラッディング抑制方法 |
-
2006
- 2006-01-31 WO PCT/JP2006/301512 patent/WO2006095508A1/ja not_active Application Discontinuation
- 2006-01-31 JP JP2007507007A patent/JP4094658B2/ja active Active
- 2006-01-31 EP EP20060712655 patent/EP1858212B1/en active Active
- 2006-01-31 US US11/578,809 patent/US7756146B2/en active Active
- 2006-01-31 CN CN2006800001686A patent/CN1943190B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003036503A1 (en) | 2001-10-19 | 2003-05-01 | Foundry Networks, Inc. | Method and system for intelligently forwarding multicast packets |
JP2003324468A (ja) * | 2002-05-08 | 2003-11-14 | Hitachi Ltd | データ転送システム及びノード装置 |
JP2004304669A (ja) * | 2003-03-31 | 2004-10-28 | Fujitsu Ltd | パケット通信システム及びパケット通信装置 |
WO2005069551A1 (ja) | 2004-01-16 | 2005-07-28 | Nippon Telegraph And Telephone Corporation | ユーザmacフレーム転送方法、エッジ転送装置、およびプログラム |
Non-Patent Citations (3)
Title |
---|
HATO K. ET AL.: "GAVES ni okeru Flooding Yokusei Hoho no Kento", 2005 NEN IEICE COMMUNICATIONS SOCIETY CONFERENCE KOEN RONBUNSHU E-7-58, 7 September 2005 (2005-09-07), XP003000792 * |
HATO K. ET AL.: "GAVES ni okeru MAC-in-MAC Hoshiki to VLAN Kakucho Hoshiki no Hikaku", 2004 NEN THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS SOGO TAIKAI KOEN RUNBUNSHU B-7-65, 8 March 2004 (2004-03-08), XP003000791 * |
See also references of EP1858212A4 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9240894B2 (en) | 2009-03-26 | 2016-01-19 | Alaxala Networks Corporation | Multicast snooping on layer 2 virtual private network |
CN101867520A (zh) * | 2010-06-12 | 2010-10-20 | 迈普通信技术股份有限公司 | 分布式系统中板卡间数据交换的方法 |
CN101867520B (zh) * | 2010-06-12 | 2013-04-17 | 迈普通信技术股份有限公司 | 分布式系统中板卡间数据交换的方法 |
JP2012200026A (ja) * | 2012-07-26 | 2012-10-18 | Alaxala Networks Corp | ネットワークシステム、コアスイッチ、エッジスイッチ、データ中継方法 |
JP6357256B1 (ja) * | 2017-03-16 | 2018-07-11 | ソフトバンク株式会社 | 中継装置及びプログラム |
WO2018169083A1 (ja) * | 2017-03-16 | 2018-09-20 | ソフトバンク株式会社 | 中継装置及びプログラム |
JP2018156264A (ja) * | 2017-03-16 | 2018-10-04 | ソフトバンク株式会社 | 中継装置及びプログラム |
US10771555B2 (en) | 2017-03-16 | 2020-09-08 | Softbank Corp. | Relay device and computer-readable medium |
Also Published As
Publication number | Publication date |
---|---|
CN1943190B (zh) | 2011-08-31 |
JPWO2006095508A1 (ja) | 2008-08-14 |
US7756146B2 (en) | 2010-07-13 |
EP1858212A4 (en) | 2011-05-18 |
JP4094658B2 (ja) | 2008-06-04 |
EP1858212B1 (en) | 2012-05-30 |
US20090109848A1 (en) | 2009-04-30 |
EP1858212A1 (en) | 2007-11-21 |
CN1943190A (zh) | 2007-04-04 |
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