CN113497985B - Method and device for reporting MAC update of user - Google Patents

Method and device for reporting MAC update of user Download PDF

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Publication number
CN113497985B
CN113497985B CN202010251351.5A CN202010251351A CN113497985B CN 113497985 B CN113497985 B CN 113497985B CN 202010251351 A CN202010251351 A CN 202010251351A CN 113497985 B CN113497985 B CN 113497985B
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network
mac
access node
update
user
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CN113497985A (en
Inventor
肖钰
殷芹
习睿哲
王波舲
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Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
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Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability

Abstract

The invention aims to provide a method and a device for updating a MAC address of a user, an access node and network equipment. After the first access node newly takes over the access of the user equipment, the first access node sends a rapid MAC update addition request to the upstream equipment, wherein the rapid MAC update addition request is used for indicating the MAC address and the corresponding VLAN information of the newly added user. Compared with the prior art, the access node for taking over the user access in the invention sends the MAC address of the user to the upstream equipment through the control channel so as to indicate the update of the MAC address of the user. The invention does not need operators to deploy special network topology, and can not cause interruption of other normal traffic because only the affected MAC address is contained. And through the control channel, the invention can update a large number of MAC addresses only by a small amount of information, and does not increase network traffic.

Description

Method and device for reporting MAC update of user
Technical Field
The present invention relates to the technical field of fixed access networks, and in particular, to a technology for reporting MAC updates of users in a fixed access network.
Background
There is a protection mechanism with feeder redundancy in PON (Passive Optical Network ) technology. The following is a Type-B protection mode defined in g.984.1. Type-B is a duplex GPON (Gigabit-Capable PON) system, having a dual OLT and an optical fiber line between an OLT (optical line terminal ) and an optical splitter (splitter) having two input/output ports on the OLT side. When one feeder line via the optical splitter is interrupted, traffic should be switched to the redundant protection line. The traffic break time is related not only to the reconnection speed of the PON layer, but also to the updating of the learned user MAC address on the network device of the traffic path.
Feeder redundancy at an access node requires restoration of traffic after a handoff to a new feeder (possibly connected to another access node). Thus, the user MAC address should be deleted from the old path and reconstructed in the new path.
Referring to fig. 1 (a) and (b) in conjunction, as shown in fig. 1 (a), user equipment 111 accesses access node 121 via ONT 131 and optical splitter 141, user equipment 112 accesses access node 122 via ONT132 and optical splitter 142, and due to certain faults, such as fiber cut-off or node failure, the feeder may need to be switched from the path shown in fig. 1 (a), i.e., user equipment 111 accesses access node 121 via ONT 131 and optical splitter 141, to the alternate path shown in fig. 1 (b), i.e., user equipment 111 accesses alternate access node 122 via ONT 131 and optical splitter 141. The MAC address (Media Access Control Address, medium access control address) of the user device 111 that the upstream device previously learned needs to be cleared and the user MAC address on the new path re-learned. Downstream traffic may not be routed to the correct path until the user MAC address is removed from the old port and the upstream device learns of the new port.
However, there is currently no standardized technique available to enable a fast update of the user's MAC address, i.e. no technique is currently available to directly update the learned MAC address on the upstream network device.
One technique that may be used is to refresh the FDB (Forwarding DataBase, forwarding table) based on the network protocol. However, this solution requires the deployment of a special network topology, such as requiring operators to deploy the topology as a ring, which is often not possible. Also, refreshing the FDB will affect all traffic through the same port/VLAN (Virtual Local Area Network ), although only part of the MAC address may need to be relearned. The recovery time also depends on the relearning rate of all upstream devices, which may vary from hundreds of milliseconds to seconds.
Another solution is to send out Gratuitous ARP (Address Resolution Protocol ) messages for each user's MAC address. This would require the access node to remember the IP/Mac pair from the client, which may not be possible in some services. Also, this scheme requires that the access node have L3 (three-tier) network functionality, whereas it is often sufficient to support L2 (two-tier) network functionality on the access node. In addition, a large number of gratuitous ARP messages may also lead to network failures if the access node fails.
Therefore, both of the above existing solutions cannot report and update only for the affected MAC address, and there are special requirements for network deployment.
Disclosure of Invention
The invention aims to provide a method and a device for updating a MAC address of a user, an access node and network equipment.
According to one aspect of the present invention, a method of updating a MAC address of a user is provided. After the first access node newly takes over the access of the user equipment, the first access node sends a rapid MAC update addition request to the upstream equipment, wherein the rapid MAC update addition request is used for indicating the MAC address and the corresponding VLAN information of the newly added user.
According to one aspect of the present invention, there is also provided a method of updating a MAC address of a user. After the second access node interrupts the access to the user equipment, the node equipment sends a fast MAC update delete request to an upstream device of the node equipment, where the fast MAC update delete request is used to indicate the MAC address and corresponding VLAN information of the removed user equipment.
According to one aspect of the present invention, there is also provided a method of updating a MAC address of a user. The method comprises the steps that first network equipment receives a rapid MAC update addition request from a first access node, wherein the rapid MAC update addition request is used for indicating the MAC address and corresponding VLAN information of newly added user equipment; the first network device updates a forwarding table of the first network device according to the indication and the receiving port; the first network device forwards the fast MAC update addition request to other devices in the L2 network.
According to one aspect of the present invention, there is also provided a method of updating a MAC address of a user. The second network device receives a fast MAC update delete request from the second access node or an edge node in the L2 network, wherein the fast MAC update delete request is used for indicating the MAC address and corresponding VLAN information of the removed user; the second network equipment updates a forwarding table of the second network equipment according to the indication and the receiving port; the second network device forwards the fast MAC update delete request to other devices in the L2 network.
According to an aspect of the present invention there is also provided an apparatus for updating a MAC address of a user, wherein the apparatus is arranged at a first access node. The first sending module is configured to send a fast MAC update addition request to an upstream device of the first access node after the first access node newly takes over access of the user device, where the fast MAC update addition request is used to indicate a MAC address and corresponding VLAN information of the newly added user.
According to an aspect of the present invention, there is also provided an apparatus for updating a MAC address of a user, wherein the apparatus is arranged at a node device. The second sending module is configured to send a fast MAC update delete request to an upstream device of the node device after the second access node interrupts access to the user device, where the fast MAC update delete request is used to indicate a MAC address and corresponding VLAN information of the removed user device.
According to an aspect of the present invention, there is also provided an apparatus for updating a MAC address of a user, wherein the apparatus is arranged at a first network device. The first receiving module is used for receiving a rapid MAC update adding request from the first access node, wherein the rapid MAC update adding request is used for indicating the MAC address and the corresponding VLAN information of the newly added user equipment; the first updating module is used for updating a forwarding table of the first updating module according to the indication and the receiving port; the first forwarding module is used for forwarding the rapid MAC update addition request to other devices in the L2 network.
According to an aspect of the present invention, there is also provided an apparatus for updating a MAC address of a user, wherein the apparatus is arranged at a second network device. The third receiving module is configured to receive a fast MAC update delete request from the second access node or an edge node in the L2 network, where the fast MAC update delete request is used to indicate a MAC address of the removed user and corresponding VLAN information; the third updating module is used for updating the forwarding table of the third updating module according to the indication and the receiving port; and the third forwarding module is used for forwarding the rapid MAC update deletion request to other devices in the L2 network.
According to an aspect of the present invention, there is also provided a node device comprising a memory, a processor and program instructions stored on the memory and executable on the processor, wherein the processor, when executing the program instructions, performs the steps of:
and after the first access node newly takes over the access of the user equipment, sending a rapid MAC update adding request to upstream equipment of the first access node, wherein the rapid MAC update adding request is used for indicating the MAC address and corresponding VLAN information of the newly added user.
According to an aspect of the present invention, there is also provided a node device comprising a memory, a processor and program instructions stored on the memory and executable on the processor, wherein the processor, when executing the program instructions, performs the steps of:
and after the second access node interrupts the access to the user equipment, sending a quick MAC update deleting request to the upstream equipment of the node equipment, wherein the quick MAC update deleting request is used for indicating the MAC address and the corresponding VLAN information of the removed user equipment.
According to an aspect of the present invention, there is also provided a node device comprising a memory, a processor and program instructions stored on the memory and executable on the processor, wherein the processor, when executing the program instructions, performs the steps of:
Receiving a rapid MAC update addition request from a first access node, wherein the rapid MAC update addition request is used for indicating the MAC address and corresponding VLAN information of newly added user equipment; updating a forwarding table of the receiving port according to the indication; and forwarding the rapid MAC update addition request to other devices in the L2 network.
According to an aspect of the present invention, there is also provided a node device comprising a memory, a processor and program instructions stored on the memory and executable on the processor, wherein the processor, when executing the program instructions, performs the steps of:
receiving a fast MAC update delete request from a second access node or an edge node in the L2 network, the fast MAC update delete request being for indicating a MAC address of a removed user and corresponding VLAN information; updating a forwarding table of the receiving port according to the indication; and forwarding the rapid MAC update deletion request to other devices in the L2 network.
According to an aspect of the present invention, there is also provided a user MAC address updating method for a PON network, wherein the method comprises the steps of:
when user equipment is switched from a second access node to a first access node, the first access node sends a rapid MAC update addition request to first network equipment at the upstream of the first access node, wherein the rapid MAC update addition request is used for indicating the MAC address and corresponding VLAN information of a newly added user; the first access node is an alternative access node of the user equipment through an optical splitter;
The first network device updates its forwarding table according to the fast MAC update addition request received from the first access node and a receiving port;
the first network device forwards the fast MAC update addition request to other devices in the L2 network.
According to an aspect of the present invention, there is also provided a user MAC address update system for a PON network, wherein the system comprises:
a first access node, configured to send a fast MAC update addition request to a first network device upstream of a first access node when a user device is switched from a second access node to the first access node, where the fast MAC update addition request is used to indicate a MAC address and corresponding VLAN information of a newly added user; the first access node is an alternative access node of the user equipment through an optical splitter;
the first network device is configured to:
updating a forwarding table of the receiving port according to the rapid MAC update addition request received from the first access node;
and forwarding the rapid MAC update addition request to other devices in the L2 network.
Compared with the prior art, the invention provides a scheme for rapidly updating the user MAC address when the access node is switched. The access node taking over the user access sends the user's MAC address to upstream devices in the L2 network over a control channel to indicate the update of the user's MAC address. The advantages of the solution according to the invention are more evident with respect to the existing solutions. For example, the present invention does not require operators to deploy special network topologies, as opposed to a solution to refresh the FDB; and, because refreshing the FDB will affect all traffic through the same port/VLAN and the recovery time also depends on the relearning rate of all upstream devices, the invention only contains the affected MAC address when reporting the MAC address update to the upstream devices, thus not causing interruption of other normal traffic. In addition, compared with the scheme of the gratuitous ARP message, the invention does not need to additionally support the L3 network function by the access node, the access node still keeps the current L2 network function, and the invention can update a large number of MAC addresses by only sending a small amount of message through the control channel, so that the network flow is not increased.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 (a) and (b) show system diagrams of user equipment via different access paths, respectively;
FIG. 2 shows a system diagram of an EPRS based user MAC address update scheme;
FIG. 3 shows a system diagram of a gratuitous ARP based user MAC address update scheme;
FIG. 4 shows a system diagram of updating a user MAC address according to one embodiment of the invention;
FIG. 5 shows a flow chart of a method of updating a user MAC address in accordance with one embodiment of the invention;
fig. 6 shows a schematic diagram of an apparatus for updating a user MAC address according to an embodiment of the invention.
The same or similar reference numbers in the drawings refer to the same or similar parts.
Detailed Description
Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments of the invention are described as an apparatus represented by a block diagram and a process or method represented by a flow chart. Although a flowchart depicts the operational procedure of the present invention as a sequential process, many of the operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations may be rearranged. The process of the present invention may be terminated when its operations are performed, but may also include additional steps not shown in the flow diagrams. The processes of the present invention may correspond to a method, a function, a procedure, a subroutine, etc.
The methods illustrated by the flowcharts and the apparatus illustrated by the block diagrams discussed below may be implemented by hardware, software, firmware, middleware, microcode, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware or microcode, the program code or code segments to perform the necessary tasks may be stored in a machine or computer readable medium such as a storage medium. The processor(s) may perform the necessary tasks.
Similarly, it will also be appreciated that any flow charts, flow diagrams, state transition diagrams, and the like represent various processes which may be substantially described as program code stored in a computer readable medium and so executed by a computing device or processor, whether or not such computing device or processor is explicitly shown.
The term "storage medium" as used herein may represent one or more devices for storing data, including read-only memory (ROM), random-access memory (RAM), magnetic RAM, kernel memory, magnetic disk storage media, optical storage media, flash memory devices, and/or other machine-readable media for storing information. The term "computer-readable medium" can include, without being limited to, portable or fixed storage devices, optical storage devices, and various other mediums capable of storing and/or containing instructions and/or data.
A code segment may represent a procedure, a function, a subprogram, a program, a routine, a subroutine, a module, a software package, a class, or any combination of instructions, data structures, or program descriptions. One code segment may be coupled to another code segment or a hardware circuit by passing and/or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc. may be passed, forwarded, or transmitted via any suitable means including memory sharing, information passing, token passing, network transmission, etc.
Specific structural and functional details disclosed herein are merely representative and are for purposes of describing exemplary embodiments of the invention. The invention may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
Referring to fig. 2, a solution for refreshing FDBs based on a network protocol is shown. Among the available network protocols are e.g. ERPS (Ethernet Ring Protection Switching ethernet ring protection switching), xSTP (STP/RSTP/MSTP, spanning Tree Protocol/Rapid Spanning Tree Protocol/Multiple Spanning Tree Protocol, spanning tree protocol/fast spanning tree protocol/multiple spanning tree protocol).
ERPS is a protocol that may respond to topology change events. The user equipment 211 is connected to the access node 221 via the ONT 231 and the optical splitter 241, and the user equipment 212 is connected to the access node 222 via the ONT 232 and the optical splitter 242. The ERPS node may refresh the FDB based on the information and the received R-APS message. This is based on the example of an ERPS ring, and thus refreshing the FDB may affect the traffic on the ONTs that is not switched out in the same example. This also requires that the topology of the operator be deployed in a ring and have connection links between access nodes.
Referring to fig. 3, a solution is shown for issuing gratuitous ARP messages for each user's MAC address. The user device 311 has previously been connected to the access node 321 via the ONT 331 and the optical splitter 341, the user device 312 has been connected to the access node 322 via the ONT 332 and the optical splitter 342, and when the user device 311 has been switched to be connected to the alternative access node 322 via the ONT 331 and the optical splitter 341, the gratuitous ARP message sent from the access node 322 of the takeover can update the MAC address of the newly takeover user on the upstream device. This requires that the access node 322 be aware of all IP/MAC pairs from the user. For some services that do not have an IP address, this may not be possible. If the access node fails, this results in a large number of gratuitous ARP messages, potentially placing a large burden on the network.
To this end, the present invention proposes a scheme for rapidly updating the user MAC address upon handover of an access node. The access node taking over the user access sends the user's MAC address to the upstream device over the control channel to indicate an update of the user's MAC address. The scheme of the invention has the advantages that:
1) No special network topology is required to be deployed by operators;
2) Only the affected MAC address is contained, so that other normal traffic is not interrupted;
3) Through the control channel, only a small amount of messages are needed to update a large number of MAC addresses, so that network traffic is not increased.
Fig. 5 shows a method flow diagram according to an embodiment of the invention, in which a process for quickly updating a user MAC address is specifically shown.
As shown in fig. 5, in step 510, after a first access node newly takes over access of a user equipment, the first access node sends a fast MAC update addition request to an upstream device thereof, where the fast MAC update addition request is used to indicate a MAC address and corresponding VLAN information of the newly added user equipment; accordingly, the upstream first network device receives the fast MAC update addition request from the first access node; in step 520, the first network device updates its forwarding table according to the indication; in step 530, the first network device forwards the fast MAC update addition request in the L2 network.
Specifically, in step 510, after the first access node newly takes over the access of the user equipment, the first access node sends a fast MAC update addition request to its upstream device, where the fast MAC update addition request is used to indicate the MAC address and corresponding VLAN information of the newly taken over user equipment.
According to an example of the present invention, referring to fig. 4 in combination, the user equipment 411 is accessed via an ONT431 and an optical splitter 441 to an access node 421, the access node 422 being an alternative access node to the user equipment 411. Likewise, the user equipment 412 is accessed via the ONT432 and the optical splitter 442 to the access node 422, the access node 421 being an alternative access node to the user equipment 412.
When the current access path of the user equipment 411 is interrupted, e.g. the access node 421 fails or the ONT431 optical port is cut off, the access node 421 switches the user equipment 411 to the alternative access node 422. After the access node 422 takes over the access of the user equipment 411, the access node 422 sends a fast MAC update addition request to its upstream device, where the fast MAC update addition request is used to indicate the MAC address and corresponding VLAN information of the newly taken over user equipment 411.
The upstream device of the access node 422 may be, for example, a device in an L2 network, such as a switch in particular.
Here, when a path switch occurs, the access node 422 reports, directly on the control channel, to its upstream network device, via the fast MAC update addition request that the access node 422 newly takes over the MAC address and corresponding VLAN information of the user device 411.
Referring back to fig. 5, in step 520, the first network device updates its forwarding table according to the indication in the fast MAC update addition request.
According to the fast MAC update addition request reported by the first access node on the control channel, the first network device extracts the MAC address and the corresponding VLAN information of the user device 411 newly taken over by the first access node, and adds the MAC address and the corresponding VLAN information together with the port information for receiving the request to the FDB forwarding table of the first network device.
In step 530, the first network device forwards the fast MAC update addition request to other devices in the L2 network.
The first network device acts as an L2 network device that propagates a fast MAC update addition request received from the first access node in the L2 network such that other devices in the L2 network update their respective FDB tables according to the MAC address and corresponding VLAN information of the newly added user device and the receiving port indicated in the request.
According to one example of the invention, the first network device forwards a fast MAC update addition request received from the first access node in the L2 network. After receiving the forwarding message, other devices in the L2 network update the indicated MAC address of the newly added user device, the corresponding VLAN information, and the receiving port information in respective FDB forwarding tables. At the same time, these other network devices will also continue to forward the fast MAC update addition request in the L2 network.
When the propagated message reaches the edge node of the L2 network, the edge node will update its own FDB table accordingly, but will not continue to propagate the fast MAC update addition request.
With continued reference to fig. 5, according to an example of the present invention, the second access node that switches the ue to the first access node, i.e. the original access node of the ue, may also send a fast MAC update delete request to an upstream device of the second access node, where the fast MAC update delete request is used to indicate the MAC address and corresponding VLAN information of the removed ue. And the upstream network equipment receiving the rapid MAC update and deletion request updates a forwarding table of the upstream network equipment according to the indication and the receiving port and forwards the rapid MAC update and deletion request to other equipment in the L2 network.
Here, to avoid erroneously deleting the MAC address of the ue from the FDB table, when a network device receives a fast MAC update delete request, but the receiving port is different from the port in the FDB table record, the delete request is ignored.
According to an example of the present invention, referring to fig. 4 in combination, a user device 411 is connected to an access node 421 via an ONT431 and an optical splitter 441, the optical splitter 441 providing a feeder redundancy protection mechanism for the user device 411, and the access node 422 being an alternative access node for the user device 411. Likewise, the user device 412 is accessed to the access node 422 via the ONT432 and the optical splitter 442, the optical splitter 442 providing a feeder redundancy protection mechanism for the user device 412, and the access node 421 being an alternative access node for the user device 412.
When the access path of the user equipment 411 is interrupted, e.g. the access node 421 fails or the ONT431 optical port is cut off, the access node 421 switches the user equipment 411 to its alternative access node 422. After the access node 422 takes over the access of the user equipment 411, the access node 422 sends a fast MAC update addition request to its upstream devices on the control channel, where the fast MAC update addition request is used to indicate the MAC address and corresponding VLAN information of the newly taken over user equipment 411. The access node 421 sends a fast MAC update delete request on the control channel to its upstream device indicating the MAC address and corresponding VLAN information of the removed user device 411.
The upstream devices of the access nodes 421 and 422 may be, for example, devices in an L2 network, such as switches in particular.
The upstream network device that received the requests from access nodes 421 and 422, respectively, updates its FDB forwarding table according to the indication and receiving port in the respective received requests.
The first network device that received the fast MAC update addition request of access node 422 forwards the fast MAC update addition request to other devices in the L2 network.
The second network device, which receives the fast MAC update delete request of the access node 421, forwards the fast MAC update delete request to the other devices in the L2 network.
Each L2 network device updates its FDB forwarding table based on the indication in the received request and the receiving port.
If an L2 network device, such as the first network device or other device in the L2 network, has updated its own FDB table based on the fast MAC update addition request and the port receiving the request, when the device receives the fast MAC update deletion request again, the device will ignore the deletion request because the user device MAC address and corresponding VLAN information indicated in the request are different from the currently recorded receiving port in the FDB table of the device.
Alternatively, when the original access path of the user equipment is interrupted, the upper node of the second access node on the original access path, i.e. the edge node in the L2 network, is also aware of the path interruption event, so that the edge node may send a fast MAC update delete request to its upstream device (i.e. other devices in the L2 network) to indicate that the MAC address and corresponding VLAN information of the user equipment have been removed.
When the original access path of the user equipment is interrupted, the user equipment is necessarily switched to the alternative access node, so that not only the second access node on the original access path can send a fast MAC update deletion request to the upstream device thereof to indicate that the MAC address and the corresponding VLAN information of the user equipment are removed, but alternatively, the edge node in the L2 network on the original access path can also send a fast MAC update deletion request to the upstream device thereof (i.e. other devices in the L2 network) to indicate that the MAC address and the corresponding VLAN information of the user equipment are removed.
Further, other devices in the L2 network also update their FDB tables according to the fast MAC update delete request and the receiving port, and continue forwarding the fast MAC update delete request in the L2 network.
According to one example of the invention, when there are a plurality of user equipments affected by the failure of the second access node, these user equipments will be handed over to the respective alternative access nodes, respectively. The second access node may send a fast MAC update delete request to its upstream device indicating that the MAC address list and corresponding VLAN information of the user device have been removed. After the first access node taking over at least part of the user equipment finishes taking over, the first access node sends a rapid MAC update adding request to the upstream equipment to indicate the MAC address list and corresponding VLAN information of the newly taken over user equipment.
Fig. 6 shows a schematic diagram of an apparatus according to an embodiment of the present invention, in which an apparatus for rapidly updating a user MAC address is specifically shown.
As shown in fig. 6, a first updating means 610 is arranged at the first access node 61, the first updating means comprising a first transmitting module 611. The second updating means 620 is arranged at the first network device 62, the second updating means 620 comprising a first receiving module 621, a first updating module 622 and a first forwarding module 623.
Wherein, after the first access node 61 newly takes over the access of the user equipment, the first sending module 611 sends a fast MAC update addition request to an upstream device of the first access node 61, where the fast MAC update addition request is used to indicate a MAC address and corresponding VLAN information of the newly added user equipment; accordingly, on the first network device 62 side, the first receiving module 621 receives the fast MAC update addition request from the first access node 61; the first updating module 622 updates its forwarding table according to the indication; the first forwarding module 623 forwards the fast MAC update addition request to other devices in the L2 network.
Specifically, when the first access node 61 newly takes over the access of the user equipment, the first sending module 611 sends a fast MAC update addition request to its upstream device, where the fast MAC update addition request is used to indicate the MAC address and corresponding VLAN information of the newly taking over user equipment.
The upstream device of the first access node 61 may be, for example, a device in an L2 network, in particular a switch.
Here, when the access path switching of the user occurs, the first transmitting module 611 reports, directly on the control channel, to the upstream network device 62 of the first access node 61, that the first access node 61 newly takes over the MAC address and the corresponding VLAN information of the user device through the fast MAC update addition request.
On the first network device 62 side, the first receiving module 621 updates the forwarding table of the first network device 62 according to the indication in the fast MAC update addition request.
According to the fast MAC update addition request reported by the first access node 61 on the control channel, the first update module 622 extracts therefrom the MAC address and the corresponding VLAN information of the user equipment 411 newly taken over by the first access node, and adds the MAC address and the corresponding VLAN information to the FDB forwarding table of the first network device 62 together with the port information for receiving the request.
The first forwarding module 623 forwards the fast MAC update addition request to other devices in the L2 network.
The first network device 62 acts as an L2 network device, and the first forwarding module 623 propagates the fast MAC update addition request received from the first access node 62 in the L2 network, so that other devices in the L2 network update their respective FDB tables according to the MAC address and corresponding VLAN information of the newly added user device and the receiving port indicated in the request.
At the same time, these other network devices will also continue to forward the fast MAC update addition request in the L2 network. When the propagated message reaches the edge node of the L2 network, the edge node will update its own FDB table accordingly, but will not continue to propagate the fast MAC update addition request.
According to an example of the present invention, the second access node, i.e. the original access node of the user equipment, switching the user equipment to the first access node 61 may also send a fast MAC update delete request to the upstream device of the second access node via a third sending module (not shown) in the second access node, the fast MAC update delete request being used to indicate the MAC address and the corresponding VLAN information of the removed user equipment. On the upstream second network device side, the third receiving module (not shown) receives the fast MAC update delete request, the third updating module (not shown) updates its forwarding table according to the indication and the receiving port, and the third forwarding module (not shown) forwards the fast MAC update delete request to other devices in the L2 network.
Here, to avoid erroneously deleting the MAC address of the ue from the FDB table, when a network device receives a fast MAC update delete request, but the receiving port is different from the port in the FDB table record, the delete request is ignored.
According to an example of the present invention, on the first network device side, the first receiving module 621 receives a fast MAC update addition request from the first access node, the first updating module 622 updates its FDB forwarding table according to the indication in the received request and the receiving port, and the first forwarding module 623 forwards the fast MAC update addition request to other devices in the L2 network. The second receiving module receives a fast MAC update deletion request from the second access node, the second updating module updates the FDB forwarding table of the second receiving module according to the indication in the received request and the receiving port, and the second forwarding module forwards the fast MAC update deletion request to other devices in the L2 network.
If the first network device has updated its own FDB table according to the fast MAC update addition request and the port receiving the request, when the second receiving module of the device receives the fast MAC update delete request, the second updating module will ignore the delete request because the user device MAC address and corresponding VLAN information indicated in the request are different from the receiving ports recorded in the FDB table of the device.
According to one example of the present invention, since other devices in the L2 network may receive the fast MAC update addition request and the fast MAC update deletion request propagated from the first network device and the second network device, respectively, each of the network devices in the L2 network may include at least one receiving module to receive the fast MAC update addition request/the fast MAC update deletion request in the network, at least one updating module to update its FDB forwarding table according to the indication in the received request and the receiving port, and at least one forwarding module to forward the received fast MAC update addition request/the fast MAC update deletion request to the other devices in the L2 network. And when the receiving module of the device receives the fast MAC update delete request, if the user device MAC address and corresponding VLAN information indicated in the request are different from the receiving ports recorded in the FDB table of the device, the update module will ignore the delete request.
It should be noted that the present invention may be implemented in software and/or a combination of software and hardware, e.g., using Application Specific Integrated Circuits (ASIC), a general purpose computer or any other similar hardware device. In one embodiment, the software program of the present invention may be executed by a processor to perform the steps or functions described above. Likewise, the software program of the present invention (including the related data structures) may be stored in a computer-readable recording medium, e.g., RAMA memory, a magnetic or optical drive or diskette and the like. In addition, some steps or functions of the present invention may be implemented in hardware, for example, as circuitry that cooperates with the processor to perform various steps or functions 。
Furthermore, at least a portion of the present invention may be implemented as a computer program product, such as computer program instructions, which when executed by a computing device, may invoke or provide methods and/or techniques in accordance with the present invention by way of operation of the computing device. Program instructions for invoking/providing the methods of the invention may be stored in fixed or removable recording media and/or transmitted via a data stream in a broadcast or other signal bearing medium and/or stored within a working memory of a computing device operating according to the program instructions.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. A plurality of units or means recited in the system claims can also be implemented by means of software or hardware by means of one unit or means. The terms first, second, etc. are used to denote a name, but not any particular order.

Claims (19)

1. A method of updating a MAC address of a user, wherein at a first access node the method comprises the steps of:
and after the first access node newly takes over the access of the user equipment, sending a rapid MAC update addition request to upstream equipment of the first access node, wherein the rapid MAC update addition request is used for indicating the MAC address and corresponding VLAN information of the newly added user.
2. A method of updating a MAC address of a user, wherein at a node device the method comprises the steps of:
after the second access node interrupts the access to the user equipment, sending a fast MAC update deletion request to an upstream device of the node equipment, wherein the fast MAC update deletion request is used for indicating the MAC address and corresponding VLAN information of the removed user equipment;
wherein the node device is the second access node or an edge node in the L2 network.
3. A method of updating a MAC address of a user, wherein at a first network device the method comprises the steps of:
receiving a rapid MAC update addition request from a first access node, wherein the rapid MAC update addition request is used for indicating the MAC address and corresponding VLAN information of newly added user equipment;
updating a forwarding table of the receiving port according to the indication;
and forwarding the rapid MAC update addition request in an L2 network.
4. A method according to claim 3, wherein the method further comprises the steps of:
receiving a fast MAC update delete request from other devices in the L2 network, the fast MAC update delete request being used to indicate a MAC address of the removed user device and corresponding VLAN information;
Updating a forwarding table of the receiving port according to the indication;
and forwarding the rapid MAC update deletion request in an L2 network.
5. The method of claim 4, wherein the fast MAC update delete request is ignored when the indicated MAC address of the removed user device and the corresponding receive port of the corresponding VLAN information do not coincide with the current record in the forwarding table.
6. A method of updating a MAC address of a user, wherein at a second network device the method comprises the steps of:
receiving a fast MAC update delete request from a second access node or an edge node in the L2 network, the fast MAC update delete request being for indicating a MAC address of a removed user and corresponding VLAN information;
updating a forwarding table of the receiving port according to the indication;
and forwarding the rapid MAC update deletion request in an L2 network.
7. An apparatus for MAC address update for a user, wherein the apparatus is arranged at a first access node, the apparatus comprising:
and the first sending module is used for sending a rapid MAC update adding request to upstream equipment of the first access node after the first access node newly takes over the access of the user equipment, wherein the rapid MAC update adding request is used for indicating the MAC address and the corresponding VLAN information of the newly added user.
8. An apparatus for updating a MAC address of a user, wherein the apparatus is arranged at a node device, the apparatus comprising:
a second sending module, configured to send a fast MAC update delete request to an upstream device of the node device after the second access node interrupts access to the user device, where the fast MAC update delete request is used to indicate a MAC address and corresponding VLAN information of the removed user device;
wherein the node device is the second access node or an edge node in the L2 network.
9. An apparatus for updating a MAC address of a user, wherein the apparatus is arranged at a first network device, the apparatus comprising the steps of:
a first receiving module, configured to receive a fast MAC update addition request from a first access node, where the fast MAC update addition request is used to indicate a MAC address of a newly added user equipment and corresponding VLAN information;
the first updating module is used for updating a forwarding table of the first updating module according to the indication and the receiving port;
and the first forwarding module is used for forwarding the rapid MAC update addition request in the L2 network.
10. The apparatus of claim 9, wherein the apparatus further comprises:
a second receiving module, configured to receive a fast MAC update delete request from another device in the L2 network, where the fast MAC update delete request is used to indicate a MAC address of the removed user device and corresponding VLAN information;
The second updating module is used for updating the forwarding table of the second updating module according to the indication and the receiving port;
and the third forwarding module is used for forwarding the rapid MAC update addition request in the L2 network.
11. An apparatus for updating a MAC address of a user, wherein the apparatus is arranged at a second network device, the apparatus comprising:
a third receiving module, configured to receive a fast MAC update delete request from a second access node or an edge node in the L2 network, where the fast MAC update delete request is used to indicate a MAC address of a removed user and corresponding VLAN information;
the third updating module is used for updating the forwarding table of the third updating module according to the indication and the receiving port;
and the third forwarding module is used for forwarding the rapid MAC update deletion request in the L2 network.
12. A node device comprising a memory, a processor and program instructions stored on the memory and executable on the processor, wherein the processor implements the method of claim 1 or 2 when executing the program instructions.
13. A network device comprising a memory, a processor and program instructions stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 3 to 6 when executing the program instructions.
14. A user MAC address update method for a PON network, wherein the method comprises the steps of:
when user equipment is switched from a second access node to a first access node, the first access node sends a rapid MAC update addition request to first network equipment at the upstream of the first access node, wherein the rapid MAC update addition request is used for indicating the MAC address and corresponding VLAN information of a newly added user; the first access node is an alternative access node of the user equipment through an optical splitter;
the first network device updates its forwarding table according to the fast MAC update addition request received from the first access node and a receiving port;
the first network device forwards the fast MAC update addition request to other devices in the L2 network.
15. The method of claim 14, wherein the method further comprises the steps of:
after the second access node interrupts the access to the user equipment, the node equipment on the interrupt feeder transmits a fast MAC update delete request to the second network equipment upstream of the node equipment, where the fast MAC update delete request is used to indicate that the MAC address and the corresponding VLAN information of the user equipment have been removed; wherein the node device is the second access node or an edge node in the L2 network;
The second network device updates its forwarding table according to the fast MAC update deletion request and the receiving port received from the node device;
the second network device forwards the fast MAC update delete request to other devices in the L2 network.
16. The method of claim 15, wherein the fast MAC update addition request and the fast MAC update deletion request propagate in an L2 network;
wherein the method further comprises the steps of:
when a device in the L2 network receives the rapid MAC update deletion request forwarded by other devices in the L2 network, if the indicated MAC address of the removed user device and the receiving port corresponding to the corresponding VLAN information are inconsistent with the current record in the forwarding table of the network device, the rapid MAC update deletion request is ignored.
17. A subscriber MAC address update system for a PON network, wherein the system comprises:
a first access node, configured to send a fast MAC update addition request to a first network device upstream of a first access node when a user device is switched from a second access node to the first access node, where the fast MAC update addition request is used to indicate a MAC address and corresponding VLAN information of a newly added user; the first access node is an alternative access node of the user equipment through an optical splitter;
The first network device is configured to:
updating a forwarding table of the receiving port according to the rapid MAC update addition request received from the first access node;
and forwarding the rapid MAC update addition request to other devices in the L2 network.
18. The system of claim 17, wherein the system further comprises:
the node equipment is deployed on the interrupted feeder line of the user equipment and is used for sending a rapid MAC update deletion request to second network equipment upstream of the node equipment after the second access node interrupts the access to the user equipment, wherein the rapid MAC update deletion request is used for indicating the MAC address and corresponding VLAN information of the removed user equipment;
wherein the node device is the second access node or an edge node in an L2 network;
the second network device is configured to:
updating a forwarding table of the receiving port according to the rapid MAC update deletion request received from the node equipment;
and forwarding the rapid MAC update deletion request to other devices in the L2 network.
19. The system of claim 18, wherein the fast MAC update addition request and the fast MAC update deletion request propagate in an L2 network;
Wherein the system further comprises:
and the one or more devices are deployed in the L2 network and are used for ignoring the rapid MAC update deletion request when receiving the rapid MAC update deletion request forwarded by other devices in the L2 network, if the MAC address of the indicated removed user equipment and the receiving port corresponding to the corresponding VLAN information are inconsistent with the current record in the forwarding table of the network equipment.
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