CN101299718B - Port switching method, network equipment and network system - Google Patents

Port switching method, network equipment and network system Download PDF

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Publication number
CN101299718B
CN101299718B CN 200810111286 CN200810111286A CN101299718B CN 101299718 B CN101299718 B CN 101299718B CN 200810111286 CN200810111286 CN 200810111286 CN 200810111286 A CN200810111286 A CN 200810111286A CN 101299718 B CN101299718 B CN 101299718B
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Prior art keywords
member port
physical member
mac address
message
user
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CN 200810111286
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CN101299718A (en
Inventor
顾勤丰
孙兵
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN 200810111286 priority Critical patent/CN101299718B/en
Publication of CN101299718A publication Critical patent/CN101299718A/en
Priority to PCT/CN2009/072146 priority patent/WO2009149646A1/en
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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

Abstract

The present invention discloses a port switching method, network equipment and network system, wherein, the port switching method includes: routing equipment confirming that the first physical member port is not available; selecting a second physical member port; transmitting TRUNK sub-interface information mapped from the first physical member port to the second physical member port, wherein, the TRUNK sub-interface information includes virtual MAC address and user ID allocated for the TRUNK sub-interface; and transmitting packets carrying the virtual MAC address to a switch accessing to the second physical member port. Application of the technical program of the invention can ensure continuity and reliability of communication through the switch between the physical member ports.

Description

Port switching method, the network equipment and network system
Technical field
The present invention relates to communication technical field, particularly a kind of port switching method, the network equipment and network system.
Background technology
In broadband access network, the link failure that requires BAS (BroadbandAccess Server, BAS Broadband Access Server) equipment and inter-exchange is to not perception of user, user's hot-swap when promptly realizing link or BAS device port fault.
Prior art provides a kind of VRRP (Virtual Router Redundancy Protocol, the virtual backup router) technology, consult Fig. 1, need be on router-A and router B configuration virtual router number and virtual router ip address, produce a virtual mac address simultaneously, in this network, just added a virtual router like this.Promptly virtual router by an active router and several backup routers (as router-A among the figure and router B, can suppose that router-A is an active router, router B is a backup router) form, active router is really realized forwarding capability, when the active router fault, backup router will become new active router, take over the work of former active router.Carry virtual MAC and virtual IP address in the message that is transmitted when main frame and virtual router communication, main frame is by the virtual router access network, and need not to understand any information of the physical router that main frame reality inserted, energy guarantees when next hop router (active router in the virtual router) fault of main frame, can in time replace by another router (backup router), thus continuity of keeping in communication and reliability.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
Need configuration of IP address in the router of prior art, be based on the three-layer network that IP transmits, and during certain physical member port fault of router, can not change the user who inserts this physical member port over to other physical member port, promptly can not realize the switching between port.
Summary of the invention
The embodiment of the invention provides a kind of port switching method, the network equipment and network system, can realize the switching between the physical member port of routing device.
In view of this, the embodiment of the invention provides:
A kind of port switching method comprises:
When confirming that first physical member port is unavailable, select second physical member port;
The trunking TRUNK sub-interface information of described first physical member port mapping is sent to second physical member port; Described TRUNK sub-interface information comprises: be the virtual mac address and the user ID of described TRUNK sub-interface distribution;
Send the message that carries described virtual mac address to the switch that connects described second physical member port.
A kind of network equipment comprises:
Confirmation unit is used to confirm that first physical member port is unavailable;
Selected cell is used for selecting second physical member port after confirming that first physical member port is unavailable;
First transmitting element is used for the TRUNK sub-interface information of described first physical member port mapping is sent to second physical member port; Described TRUNK sub-interface information comprises: be the virtual mac address and the user ID of described TRUNK sub-interface distribution;
Second transmitting element is used for sending the message that carries described virtual mac address to the switch that connects described second physical member port.
A kind of network system comprises: routing device and switch,
Described routing device is used to confirm that first physical member port is unavailable, selects second physical member port, and the described first physical member port corresponding virtual MAC Address is sent to second physical member port; The described first physical member port corresponding virtual MAC Address is: the virtual mac address that is distributed for the TRUNK sub-interface that is mapped to described first physical member port; Send the message that carries described virtual mac address to the switch that connects described second physical member port;
Described switch is used to receive the message that carries described virtual mac address.
The embodiment of the invention is when first physical member port is unavailable, the TRUNK sub-interface information of first physical member port mapping is sent to second physical member port, and in the message that sends to the switch that connects this second physical member port, carry virtual mac address, to realize the switching between the routing device physical member port.
Description of drawings
The network architecture diagram of utilizing virtual router to insert that Fig. 1 provides for prior art;
The networking diagram that Fig. 2 is provided for the embodiment of the invention one;
The virtual mac address that Fig. 3 is provided for the embodiment of the invention one is mapped to the method flow diagram of physical member port;
The port switching method flow chart that Fig. 4 is provided for the embodiment of the invention one;
The disabled method flow diagram of affirmation member port that Fig. 5 is provided for the embodiment of the invention one;
The network equipment structure chart that Fig. 6 provides for the embodiment of the invention two.
Embodiment
The embodiment of the invention provides a kind of port switching method, comprising: routing device confirms that first physical member port is unavailable; Select second physical member port; The trunking TRUNK sub-interface information of described first physical member port mapping is sent to second physical member port; Described TRUNK sub-interface information comprises: be the virtual mac address and the user ID of described TRUNK sub-interface distribution; Send the message that carries described virtual mac address to the switch that connects described second physical member port.The technical scheme of using the embodiment of the invention to provide can guarantee the continuity and the reliability of communication by the switching between physical member port.
Following elder generation is to BAS (Broadband Access Server, BAS Broadband Access Server) equipment interface is done simple the introduction: BAS equipment is by asymmetric ether Trunk cut-in convergent switch, as shown in Figure 2, under the ether TRUNK interface of BAS equipment 4 physics member interface: GE1/0/1, GE2/0/1, GE3/0/1, GE4/0/1 are arranged, wherein, preceding two physics member interfaces (GE1/0/1 and GE2/0/1) are connected with a switch, and latter two physics member interface (GE3/0/1 and GE4/0/1) is connected with another switch.
Clearer for the port switching method that the follow-up embodiment of the invention is provided, earlier to being unit with ether TRUNK sub-interface, the process that virtual mac address is mapped to physical member port describes in detail, consults Fig. 3, and this flow process specifically comprises:
Step 301, BAS equipment are created ether TRUNK sub-interface, for ether TRUNK sub-interface distributes virtual mac address and user ID.Wherein, user ID can be: VLAN (Virtual LocalArea Network, VLAN) or QinQ (also claiming Stacked VLAN, the two-layer virtual local area network (LAN)) sign, the routing device among this embodiment can be BAS.
Step 302, be utilized as the user ID that ether TRUNK sub-interface is distributed, principle according to the user ID equilibrium of each physical member port, with the physical member port of TRUNK sub-interface information mapping to BAS, TRUNK sub-interface information comprises: virtual mac address that is distributed and user ID.
Step 303, each physical member port receive the message of users broadcasting, comprise user's VLAN/QinQ information in the message of users broadcasting, and wherein, the message of users broadcasting is a first kind message.
Step 304, judge that whether user ID in the first kind message is the user ID that receives in the TRUNK sub-interface information that the physical member port of first kind message shines upon, if, execution in step 305; If not, process ends.
VLAN/QinQ information in step 305, the supposition first kind message is VLAN/QinQ in the TRUNK sub-interface information of first physical member port mapping, BAS equipment sends response message by first physical member port to switch, comprises in this response message: the virtual mac address in this TRUNK sub-interface information.
Step 306, switch are preserved the corresponding relation of virtual mac address and the switch ports themselves that is connected this first physical member port, and send response message to the user, carry the virtual mac address in the TRUNK sub-interface information in this response message.
Subsequent user in the second class message that BAS sends all with virtual mac address as destination address, after switch is received the second class message from the user like this, according to the corresponding relation of the virtual mac address of preserving in advance with switch ports themselves (switch ports themselves that is connected with first physical member port), send user's the second class message by this switch ports themselves to BAS equipment, all are that the second class message of destination address is all received by first physical member port with the virtual mac address like this.
Consult Fig. 4 below, the port switching method that the embodiment of the invention one is provided describes in detail, and this method specifically comprises:
Step 401, confirm that first physical member port is unavailable.
The specific implementation of this step as shown in Figure 5.
User ID in step 402, the TRUNK sub-interface information of shining upon according to first physical member port according to the principle of the user ID equilibrium of each physical member port, is selected second physical member port.
Step 403, the TRUNK sub-interface information that first physical member port is shone upon send to second physical member port, and wherein, TRUNK sub-interface information comprises: virtual mac address and user ID that BAS equipment is distributed for this TRUNK sub-interface.
Step 404, send user's probe messages to switch, carry virtual mac address in this user's probe messages by second physical member port.
Step 405, switch refresh the MAC table, be the original virtual mac address of preserving of switch deletion and the corresponding relation of the switch ports themselves that is connected first physical member port, the corresponding relation of preservation virtual mac address and the switch ports themselves that is connected second physical member port.
Wherein, above-mentioned first physical member port and second physical member port may branch on different service boards, therefore, above-described port switching method can realize striding on the routing device user's hot-swap of veneer.
Consult Fig. 5, confirm that the disabled method flow of first physical member port specifically comprises:
Behind step 501, the second class message of switch reception from the user, according to the virtual mac address in the second class message and the corresponding relation of switch ports themselves, by the pairing switch ports themselves of virtual mac address, first physical member port (being connected with the pairing switch ports themselves of virtual mac address) to BAS sends the second class message, in special time period, do not receive response message from BAS, confirm that first physical member port is unavailable, this virtual mac address is by aging.Wherein, this second class message comprises: veneer and port numbers that user ID VLAN/QinQ, virtual mac address, message insert.
Step 502, switch are broadcasted this second class message by each port.
After step 503, BAS receive the second class message, judge whether the type code in the TRUNK port attribute table that receives this second class message is expressed as asymmetric TRUNK, if, execution in step 504; If not, receiving the message flow process according to rank and file's port handles.
Step 504, BAS judge whether the user ID in the second class message is identical with user ID in the TRUNK sub-interface information that the physical member port that receives this second class message is shone upon, if, execution in step 505, if not, execution in step 507.
Step 505, BAS judge whether the virtual mac address in the second class message is identical with virtual mac address in the TRUNK sub-interface information that the physical member port that receives this second class message is shone upon, if, execution in step 506, if not, execution in step 507.
Step 506, BAS judge whether the veneer and the port numbers of physical member port of the veneer that carries in the second class message and this second class message of port numbers and reception be identical, if, process ends, if not, execution in step 507.
Step 507, BAS abandon the second class message.
Step 508, BAS utilize the packet sampling detection technique, when the second class message that is dropped in the unit interval section reaches threshold value, according to the virtual mac address in the second class message that is dropped, confirm that first physical member port is unavailable.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, read-only memory for example, disk or CD etc.
Consult Fig. 6, the embodiment of the invention two provides a kind of network equipment, and this equipment comprises: first physical member port, and second physical member port, confirmation unit 601, selected cell 602, the first transmitting elements 603, the second transmitting elements 604, wherein,
Confirmation unit 601 is used to confirm that first physical member port is unavailable;
Selected cell 602 is used for selecting second physical member port after confirming that first physical member port is unavailable;
First transmitting element 603 is used for the TRUNK sub-interface information of described first physical member port mapping is sent to second physical member port; Described TRUNK sub-interface information comprises: be the virtual mac address and the user ID of described TRUNK sub-interface distribution;
Second transmitting element 604 is used for by second physical member port, sends the message that carries described virtual mac address to the switch that connects described second physical member port.
This equipment also comprises:
Allocation units 605 are used to the TRUNK sub-interface to distribute virtual mac address and user ID;
Map unit 606 is used for TRUNK sub-interface information mapping to physical member port, and described TRUNK sub-interface information comprises: be virtual mac address and the user ID that described TRUNK sub-interface distributes;
First kind message receiving element 607 is used to receive the first kind message that carries user ID;
Whether judging unit 608, the user ID that is used for judging described first kind message are the user ID that receives in the TRUNK sub-interface information that the physical member port of described first kind message shines upon;
Response message transmitting element 609, be used for when the judged result of described judging unit when being, send response message to described user, carry the virtual mac address in the described TRUNK sub-interface information in the described response message.
Wherein, described confirmation unit 601 comprises:
The second class message receiving element is used to receive the second class message that carries virtual mac address and user ID;
The dropping packets confirmation unit, be used for when the user ID of the described second class message different with user ID in the TRUNK sub-interface information that the physical member port of the reception second class message is shone upon, perhaps, virtual mac address in the TRUNK sub-interface information that the physical member port of virtual mac address in the second class message and the reception second class message is shone upon confirms to abandon the second class message not simultaneously;
The threshold decision unit is used to judge whether the second class message that is dropped in the unit interval section reaches threshold value;
The unavailable confirmation unit of port, be used for when the judged result of described threshold decision unit when being, according to virtual mac address in the described second class message that is dropped and the corresponding relation between the physical member port, promptly first physical member port is unavailable to confirm described physical member port.
Wherein, described selected cell 602 is used for according to being mapped to the user ID of the TRUNK sub-interface information of described first physical member port, according to the principle of the user ID equilibrium of each physical member port, selects second physical member port.
The embodiment of the invention three provides a kind of network system, comprising: routing device and switch,
Routing device distributes virtual mac address and user ID for the TRUNK sub-interface, according to the principle of each physical member port user ID equilibrium, with TRUNK sub-interface information mapping to physical member port; Receive first kind message, confirm that user ID in the first kind message is the user ID that receives in the TRUNK sub-interface information that the physical member port of described first kind message shines upon, send response message to switch, carry the virtual mac address in the described TRUNK sub-interface information in the described response message;
Switch is preserved the corresponding relation of virtual mac address and the switch ports themselves that is connected described physical member port in the described response message, and sends described response message to described user;
Switch receives the described second class message that the user sends, and according to the virtual mac address in the second class message and the corresponding relation of switch ports themselves, sends the described second class message by the pairing switch ports themselves of described virtual mac address to routing device; When the response message that do not receive from described routing device, confirm that described virtual mac address is aging, each port by described switch sends the described second class message to described routing device.
Routing device receives the second class message that carries virtual mac address and user ID from switch, when the user ID in the described second class message different with user ID in the TRUNK sub-interface information that the physical member port that receives the second class message is shone upon, perhaps, virtual mac address in the TRUNK sub-interface information that the physical member port of virtual mac address in the second class message and the reception second class message is shone upon confirms to abandon the second class message not simultaneously; Judge whether the second class message that is dropped in the unit interval section reaches threshold value; If according to virtual mac address in the described second class message that is dropped and the corresponding relation between the physical member port, promptly first physical member port is unavailable to confirm described physical member port; The described first physical member port corresponding virtual MAC Address is sent to second physical member port; Send the message that carries described virtual mac address to the switch that connects described second physical member port;
Switch writes down the corresponding relation of described virtual mac address and the switch ports themselves that is connected described second physical member port.
As seen from the above analysis, the embodiment of the invention has following beneficial effect:
The embodiment of the invention is when first physical member port is unavailable, the TRUNK sub-interface information of first physical member port mapping is sent to second physical member port, and in the message that sends to the switch that connects this second physical member port, carry virtual mac address, to realize the switching between the routing device physical member port, the switch that connects this second physical member port is preserved the corresponding relation of virtual mac address and the switch ports themselves that is connected second physical member port, follow-up this switch receives that the user sends when carrying the uplink message of this virtual mac address, can be according to above-mentioned corresponding relation, user's uplink message is sent to routing device by the switch ports themselves corresponding with this virtual mac address, this routing device receives this uplink message by second physical member port, promptly by the switching between the routing device physical member port, to guarantee the continuity and the reliability of communication.
The embodiment of the invention is according to the user ID in the TRUNK sub-interface information, principle according to each physical member port user ID equilibrium, with TRUNK sub-interface information mapping to physical member port, wherein, TRUNK sub-interface information comprises: be the virtual mac address and the user ID of described TRUNK sub-interface distribution.Different virtual MAC is mapped on the corresponding physical member port, and sends the response message that carries this virtual mac address, to realize the load balancing of user in different physical member port to the user.
More than port switching method, the network equipment and network system that the embodiment of the invention provided are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (15)

1. a port switching method is characterized in that, comprising:
When first physical member port on the routing device affirmation routing device is unavailable, select second physical member port on the routing device;
The trunking TRUNK sub-interface information of described first physical member port mapping is sent to second physical member port; Described TRUNK sub-interface information comprises: be the virtual mac address and the user ID of TRUNK sub-interface distribution;
Send the message that carries described virtual mac address to the switch that connects described second physical member port.
2. method according to claim 1 is characterized in that, before confirming that first physical member port is unavailable, this method also comprises:
For the TRUNK sub-interface distributes virtual mac address and user ID, TRUNK sub-interface information mapping is arrived each physical member port.
3. method according to claim 2 is characterized in that, described TRUNK sub-interface information mapping is specially to each physical member port:
According to the user ID in the TRUNK sub-interface information, according to the principle of each physical member port user ID equilibrium, with TRUNK sub-interface information mapping to physical member port.
4. method according to claim 2 is characterized in that, unavailable being specially of described affirmation first physical member port:
When the user ID in the second class message that receives different with user ID in the TRUNK sub-interface information that the physical member port of the described second class message of reception is shone upon, perhaps, virtual mac address in the TRUNK sub-interface information that the physical member port of virtual mac address in the second class message and the reception second class message is shone upon is not simultaneously, described routing device confirms to abandon the described second class message, wherein, the described second class message comprises: user ID and described virtual mac address;
When the second class message that is dropped in the unit interval section reached threshold value, according to the virtual mac address in the described second class message that is dropped, promptly first physical member port was unavailable to confirm the pairing physical member port of described virtual mac address.
5. method according to claim 4 is characterized in that, with TRUNK sub-interface information mapping after each physical member port, confirm that first physical member port is unavailable before, this method also comprises:
Receive first kind message, confirm that user ID in the first kind message is the user ID that receives in the TRUNK sub-interface information that the physical member port of described first kind message shines upon, send response message by switch to described user, carry the virtual mac address in the described TRUNK sub-interface information in the described response message;
Reception is from described user's the second class message.
6. method according to claim 5 is characterized in that,
Describedly send response message by switch to described user and be specially:
Send described response message to the switch that is connected with described physical member port, described switch is preserved the corresponding relation of virtual mac address and the switch ports themselves that is connected described physical member port in the described response message, and sends described response message to described user.
7. method according to claim 6 is characterized in that, before the second class message that receives from described user, this method also comprises:
Described switch receives the described second class message that the user sends, according to the virtual mac address in the second class message that prestores and the corresponding relation of switch ports themselves, send the described second class message to routing device by the pairing switch ports themselves of described virtual mac address;
Described switch confirms that described virtual mac address is aging when the response message that do not receive from described routing device, each port by described switch sends the described second class message to described routing device.
8. method according to claim 1 is characterized in that,
Described selection second physical member port is specially:
According to the user ID in the TRUNK sub-interface information that is mapped to described first physical member port,, select second physical member port according to the principle of the user ID equilibrium of each physical member port.
9. method according to claim 1 is characterized in that, after the message of described virtual mac address is carried in the switch transmission that connects described second physical member port, this method also comprises:
Described switch writes down the corresponding relation of described virtual mac address and the switch ports themselves that is connected described second physical member port.
10. a network equipment is characterized in that, comprising: first physical member port, second physical member port, confirmation unit, selected cell, first transmitting element, second transmitting element;
Confirmation unit is used to confirm that first physical member port is unavailable;
Selected cell is used for selecting second physical member port after confirming that first physical member port is unavailable;
First transmitting element is used for the TRUNK sub-interface information of described first physical member port mapping is sent to second physical member port; Described TRUNK sub-interface information comprises: be the virtual mac address and the user ID of described TRUNK sub-interface distribution;
Second transmitting element is used for sending the message that carries described virtual mac address to the switch that connects described second physical member port.
11. equipment according to claim 10 is characterized in that, this equipment also comprises:
Allocation units are used to the TRUNK sub-interface to distribute virtual mac address and user ID;
Map unit is used for TRUNK sub-interface information mapping to physical member port.
12. equipment according to claim 11 is characterized in that,
Described confirmation unit comprises:
The second class message receiving element is used to receive the second class message;
The dropping packets confirmation unit, be used for when the user ID of the described second class message different with user ID in the TRUNK sub-interface information that the physical member port of the reception second class message is shone upon, perhaps, virtual mac address in the TRUNK sub-interface information that the physical member port of virtual mac address in the second class message and the reception second class message is shone upon confirms to abandon the described second class message not simultaneously;
The threshold decision unit is used to judge whether the second class message that is dropped in the unit interval section reaches threshold value;
The unavailable confirmation unit of port, be used for when the judged result of described threshold decision unit when being, according to the virtual mac address in the described second class message that is dropped, promptly first physical member port is unavailable to confirm the pairing physical member port of described virtual mac address.
13. equipment according to claim 12 is characterized in that, this equipment also comprises:
First kind message receiving element is used to receive first kind message;
Whether judging unit, the user ID that is used for judging described first kind message are the user ID that receives in the TRUNK sub-interface information that the physical member port of described first kind message shines upon;
The response message transmitting element, be used for when the judged result of described judging unit when being, send response message to described user, carry the virtual mac address in the described TRUNK sub-interface information in the described response message.
14. equipment according to claim 10 is characterized in that,
Described selected cell is used for according to being mapped to the user ID of the TRUNK sub-interface information of described first physical member port, according to the principle of the user ID equilibrium of each physical member port, selects second physical member port.
15. the network system that port switches is characterized in that, comprising: routing device and switch,
Described routing device is used to confirm that first physical member port on the routing device is unavailable, selects second physical member port on the routing device, and the described first physical member port corresponding virtual MAC Address is sent to second physical member port; The described first physical member port corresponding virtual MAC Address is: the virtual mac address that is distributed for the TRUNK sub-interface that is mapped to described first physical member port; Send the message that carries described virtual mac address to the switch that connects described second physical member port;
Described switch is used to receive the message that carries described virtual mac address.
CN 200810111286 2008-06-13 2008-06-13 Port switching method, network equipment and network system Expired - Fee Related CN101299718B (en)

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