CN101610216A - Ethernet message forwarding method, Apparatus and system - Google Patents
Ethernet message forwarding method, Apparatus and system Download PDFInfo
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- CN101610216A CN101610216A CNA2009100901488A CN200910090148A CN101610216A CN 101610216 A CN101610216 A CN 101610216A CN A2009100901488 A CNA2009100901488 A CN A2009100901488A CN 200910090148 A CN200910090148 A CN 200910090148A CN 101610216 A CN101610216 A CN 101610216A
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Abstract
The embodiment of the invention relates to a kind of Ethernet message forwarding method, Apparatus and system, and by reception Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID; According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port; Transmit described Ethernet message by described outbound port.Thereby under the situation that the mode that still adopts clean culture E-Packets, control VLAN ID and the forwarding information entrained according to the Ethernet message, determine to transmit Ethernet message corresponding output port, therefore avoided forwarding unit when transmitting the Ethernet message, need the study media access control address, guaranteed the Ethernet message forward efficiency of forwarding unit.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of Ethernet message forwarding method, Apparatus and system.
Background technology
In present ether metropolitan area network (ME:Metro Ethernet) solution, as shown in Figure 1, adopt VPLS (VPLS:Virtual Private LAN Service) to set up the ME network, the user inserts user side provider edge equipment (UPE:User FacingProvider Edge) by digital subscriber line access multiplex (DSLAM:Digital Subscriber LineAccess Multiplexer), UPE and provider edge equipment (PE:Provider Edge) are formed the VPLS network, PE termination VPLS business, (NPE:NetworkFacing Provider Edge) enters three-layer network by the network side provider edge equipment.
Existing scheme has two kinds of message forwarding methods: one, close media interviews control (MAC:Media Access Control) address learning, allow message broadcast in virtual switch instance (VSI:VirtualSwitching Instance); Two, study MAC Address, message can carry out clean culture and transmit.
If adopt message in VSI, to broadcast,, be infeasible therefore then owing to all very big to forwarding performance and network bandwidth influence; And if the mode of employing study MAC Address promptly E-Packets according to MAC Address, then equipment need be learnt all users' MAC Address, and is when number of users increases, also more and more higher to the requirement of equipment.Current specification is that 128K MAC Address supported in requirement, and this specification also has the constantly trend of expansion, and this has just caused the capacity of the mac address table that equipment need store increasing, causes the device forwards decrease in efficiency.
Summary of the invention
The embodiment of the invention provides a kind of Ethernet message forwarding method, Apparatus and system, thereby has avoided forwarding unit study media access control address.
The embodiment of the invention provides a kind of ether metropolitan area network message forwarding method, and in virtual special LAN service network, described method comprises:
The Ethernet message that reception is to be transmitted, described Ethernet message carries the control VLAN ID;
According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port;
Transmit described Ethernet message by described outbound port.
The embodiment of the invention also provides a kind of user side provider edge equipment, and in virtual special LAN service network, described equipment comprises:
Receiver module is used to receive Ethernet message to be transmitted, and described Ethernet message carries the control VLAN ID;
Determination module is used for entrained control VLAN ID of Ethernet message and forwarding information according to described receiver module reception, determines to transmit described Ethernet message corresponding output port;
Forwarding module is used for transmitting the Ethernet message that described receiver module receives by the definite outbound port of described determination module.
The embodiment of the invention also provides a kind of provider edge equipment, and in virtual special LAN service network, described equipment comprises:
Receiver module is used to receive Ethernet message to be transmitted, and described Ethernet message carries the control VLAN ID;
Determination module is used for entrained control VLAN ID of Ethernet message and forwarding information according to described receiver module reception, determines to transmit described Ethernet message corresponding output port;
Forwarding module is used for transmitting the Ethernet message that described receiver module receives by the definite outbound port of described determination module.
The embodiment of the invention also provides a kind of ether metropolitan area network message forwarding system, and in virtual special LAN service network, described system comprises:
The user side provider edge equipment, be used to receive Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID, control VLAN ID and the forwarding information entrained according to described Ethernet message, determine to transmit described Ethernet message corresponding output port, and, described Ethernet message is forwarded to provider edge equipment or user side equipment by described outbound port;
Provider edge equipment, be used to receive Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID, control VLAN ID and the forwarding information entrained according to described Ethernet message, determine to transmit described Ethernet message corresponding output port, and, described Ethernet message is forwarded to network side provider edge equipment or user side provider edge equipment by described outbound port.
The technical scheme that provides by the invention described above embodiment as can be seen, in the embodiment of the invention, by reception Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID; According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port; Transmit described Ethernet message by described outbound port.Thereby under the situation that the mode that still adopts clean culture E-Packets, control VLAN ID and the forwarding information entrained according to the Ethernet message, determine to transmit Ethernet message corresponding output port, therefore avoided forwarding unit when transmitting the Ethernet message, need the study media access control address, guaranteed the Ethernet message forward efficiency of forwarding unit.
Description of drawings
Fig. 1 is an ether metropolitan area network networking structure schematic diagram in the prior art;
The described method specific implementation schematic diagram one that Fig. 2 provides for the embodiment of the invention;
The described method specific implementation schematic diagram two that Fig. 3 provides for the embodiment of the invention;
The described method specific implementation schematic diagram three that Fig. 4 provides for the embodiment of the invention;
The described method specific implementation schematic diagram four that Fig. 5 provides for the embodiment of the invention;
The described method specific implementation schematic diagram five that Fig. 6 provides for the embodiment of the invention;
The described UPE structural representation one that Fig. 7 provides for the embodiment of the invention;
The described UPE structural representation two that Fig. 8 provides for the embodiment of the invention;
The described PE structural representation one that Fig. 9 provides for the embodiment of the invention;
The described PE structural representation two that Figure 10 provides for the embodiment of the invention;
The described system configuration schematic diagram one that Figure 11 provides for the embodiment of the invention;
The described system configuration schematic diagram two that Figure 12 provides for the embodiment of the invention.
Embodiment
In the specific embodiment of the Ethernet message forwarding method that the embodiment of the invention provides, as shown in Figure 2, by carrying out following steps:
Step 21 receives Ethernet message to be transmitted, and described Ethernet message carries the control VLAN ID;
Step 22 according to described control VLAN ID and forwarding information, determines to transmit described Ethernet message corresponding output port;
Step 23 is transmitted described Ethernet message by described outbound port.
Thereby under the situation that the mode that still adopts clean culture E-Packets, the control VLAN entrained (VLAN:Virtual Local Area Network) sign (ID) according to the Ethernet message, promptly controlling VID is keyword (key), and relevant forwarding information, determine to transmit Ethernet message corresponding output port, therefore avoided forwarding unit when transmitting the Ethernet message, need study media interviews control (MAC:Media Access Control) address, guaranteed the Ethernet message forward efficiency of forwarding unit.
In a specific embodiment of the Ethernet message forwarding method that the embodiment of the invention provides, MAC Address for fear of forwarding unit study user, and still keep adopting the mode of clean culture to transmit the Ethernet message, at control plane, be all forwarding units, such as the different control VID of each interface configuration on user side provider edge equipment (UPE:User Facing Provider Edge) or the provider edge equipment (PE:ProviderEdge), be used for distinct interface in the same virtual switch instance of unique identification (VSI:Virtual Switching Instance).
Need to prove, for fear of obscuring, forwarding unit in the embodiment of the invention, such as PE or UPE, the control VID of local terminal self represents with cTag, and entrained control VID in the Ethernet message that receives for forwarding unit represents with fTag.
In addition, at Forwarding plane, the embodiment of the invention has changed former with good grounds mac address table and has carried out the forwarding of Ethernet message, promptly according to MAC Address and VSI index (Vsilndex) as key value (key), definite correspondence transfers the Ethernet message pass-through mode of port, but adopt control VID (being fTag) entrained in the Ethernet message that sends according to far-end as the key value, and other relevant forwarding informations, definite correspondence transfers the Ethernet message pass-through mode of port, transmits the Ethernet message.
Below in conjunction with accompanying drawing, a specific implementation process of the Ethernet message forwarding method that the embodiment of the invention is provided is carried out detailed statement.
Suppose user side equipment router one (Router1) and router two (Router1) that UPE is affiliated, the label of UPE issue is 200.
So, when router one when network side provider edge equipment (NPE:Network FacingProvider Edge) sends the Ethernet message (the control VID=1 that this Ethernet message carries), the Ethernet message forwarding method that the embodiment of the invention provides as shown in Figure 3, this method is moved on user side provider edge equipment UPE, specifically can comprise:
Step 31, UPE sends the Ethernet message that carries control VID=1 by inbound port 2 (PORT=2) receiving router 1.
Step 32, the ingress port information that UPE is adopted according to control VID=1 entrained in the Ethernet message (for UPE, i.e. fTag=1) with when receiving this Ethernet message, i.e. PORT=2, corresponding output port is PORT=1 when determining to transmit this Ethernet message.
Need to prove, in the embodiment of the invention, forwarding unit is being a keyword according to the entrained control VLAN ID of this Ethernet message, and be aided with relevant forwarding information, determine to transmit in the process of this Ethernet message corresponding output port, can be according to prior foundation, and be stored in forwarding information in the forwarding unit, such as the outgoing label of cTag or fTag, outbound port, inbound port, Vsilndex, forwarding unit with go into corresponding relation between label or the like, corresponding port when determining to transmit the Ethernet message.
So, corresponding to the embodiment of the invention, then can be according to forwarding information corresponding relation as shown in table 1 below, corresponding output port when determining to transmit the Ethernet message, promptly outbound port is PORT1.
Table 1
| Equipment | ??fTag | ??VsiIndex | ??cTag | Inbound port | Outbound port | Outgoing label | Go into label |
| ??UPE | ??2 | ??1 | ??1 | ??PORT1 | ??PORT2 | ??200 | ??100 |
| ??UPE | ??1 | ??1 | ??2 | ??PORT2 | ??PORT1 | ??200 | ??100 |
| ??UPE | ??1 | ??1 | ??3 | ??PORT3 | ??PORT1 | ??200 | ??100 |
Be understandable that; form and form cited in the embodiment of the invention limit the forwarding information corresponding relation; the technical scheme that is provided in order more clearly to explain the embodiment of the invention just, but the effect that does not influence and limit for the protection range of the embodiment of the invention.
Such as, in another specific embodiment of the Ethernet message forwarding method that the embodiment of the invention provides, can set up and be stored in the forwarding information corresponding relation shown in following table 2, table 3, table 4 among the UPE in advance:
Table 2
| Equipment | ??fTag | ??VsiIndex | ??cTag | Inbound port |
| ??UPE | ??2 | ??1 | ??1 | ??PORT1 |
| ??UPE | ??1 | ??1 | ??2 | ??PORT2 |
| ??UPE | ??1 | ??1 | ??3 | ??PORT3 |
Table 3
| Equipment | ??fTag | ??VsiIndex | Outgoing label | Outbound port |
| ??UPE | ??2 | ??1 | ??200 | ??PORT2 |
| ??UPE | ??1 | ??1 | ??200 | ??PORT1 |
| ??UPE | ??1 | ??1 | ??200 | ??PORT1 |
Table 4
| Equipment | ??fTag | ??VsiIndex | Go into label |
| ??UPE | ??1 | ??1 | ??100 |
Then in the step 32, the ingress port information that UPE is at first adopted according to the entrained control fTag=1 of this Ethernet message with when receiving this Ethernet message, be PORT=2, by forwarding information corresponding relation as shown in table 2, determine among the UPE, with fTag=1 corresponding virtual exchange example index, i.e. Vsilndex=1;
Then, entrained according to the Ethernet message again control VLAN ID and the definite virtual switch instance index of UPE, be Vsilndex=1, by inquiring about forwarding information corresponding relation as shown in table 3, determine to transmit this Ethernet message corresponding output port, promptly outbound port is PORT1.
The outbound port that the embodiment of the invention is related can be understood as the port that is adopted when transmitting the Ethernet message, and inbound port can be understood as the port that is adopted when receiving message, and simultaneously, outbound port or inbound port also can be with going out the tunnel or going into the tunnel and replace; The outgoing label that the embodiment of the invention is related can be understood as the label that forwarding unit itself is issued, and goes into label and can be understood as the entrained device label of message that is received.
When also it should be noted that in addition, according to waiting to transmit Ethernet message entrained control VID and forwarding information, determine to transmit in the Ethernet message corresponding output port process, also can adopt other mature technique of this area to realize, to this, the embodiment of the invention does not limit.
Step 33, the outbound port by determining sends Ethernet message to be transmitted.
In this step, can also comprise control VID with UPE itself, i.e. the device label of cTag=2, and UPE issue, promptly outgoing label=200 are inserted in the Ethernet message, and are transmitted amended Ethernet message (specifically can be forwarded to the PE place).
Concrete, can be according to the entrained fTag=1 of Ethernet message that receives, by forwarding information corresponding relation as shown in table 1, perhaps according to forwarding information corresponding relation shown in table 2, table 3, determine the device label that UPE control VID corresponding with the entrained fTag=1 of the Ethernet message that receives and UPE issue.
In another specific embodiment of Ethernet message forwarding method that the embodiment of the invention provides, as NPE (control VID=2 that this Ethernet message carries when router one sends the Ethernet message, and the control VID=1 of PE, device label=100 of PE issue), then the Ethernet message forwarding method that provides of the embodiment of the invention as shown in Figure 4, this method is moved on user side provider edge equipment UPE, specifically can comprise:
Step 41, UPE receives by what PE sent by inbound port 1 (PORT1) and waits to transmit the Ethernet message.
Step 42, UPE according to control VID=2 entrained in this Ethernet message (for UPE, i.e. fTag=2) and this Ethernet message entrained go into label=100 (being the device label of PE issue), corresponding output port when determining to transmit this Ethernet message, promptly outbound port is PORT=2.
Concrete, UPE can be according to entrained fTag=2 in this Ethernet message, with this Ethernet message entrained go into label=100, by forwarding information corresponding relation as shown in table 1, the perhaps forwarding information corresponding relation shown in table 3, table 4, corresponding output port when determining to transmit this Ethernet message, promptly outbound port is PORT2.
Step 43, UPE adopts the outbound port of determining, sends Ethernet message to be transmitted.
In this step, can also the Ethernet message is entrained, the control VID of Ethernet message itself, be that fTag=2 deletes (at this moment, this Ethernet message only carries the control VID=1 of PE), and transmit amended Ethernet message (specifically can be forwarded to user side equipment) as router one.
In the specific embodiment of the Ethernet message forwarding method that the embodiment of the invention provides, this method is moved on provider edge equipment PE, suppose PE interface configuration control VID1 (being cTag=1), this interface can be handled the message that carries control VID2 and control VID3 (being fTag2 and fTag3), and the label of PE issue is 100.
So, (this Ethernet message carries the control VID=2 of Ethernet message itself when NPE sends the Ethernet message when router one, and the control VID=1 of UPE, device label=200 of UPE issue), then the Ethernet message forwarding method that provides of the embodiment of the invention as shown in Figure 5, PE specifically carries out following operation:
Step 51, PE receives by what UPE sent by inbound port 1 (PORT1) and waits to transmit the Ethernet message.
Step 52, PE according to control VID=2 entrained in this Ethernet message (for PE, be fTag=2) and this Ethernet message entrained go into label=200 (be UPE issue device label), corresponding output port when determining to transmit this Ethernet message, promptly outbound port is PORT=2.
Concrete, PE can according to fTag=2 entrained in this Ethernet message and this Ethernet message entrained go into label=200, by the forwarding information corresponding relation shown in following table 5, corresponding output port when determining to transmit this Ethernet message, promptly outbound port is PORT2.
Table 5
| Equipment | ??fTag | ??VsiIndex | ??cTag | Inbound port | Outbound port | Outgoing label | Go into label |
| ??PE | ??2 | ??1 | ??1 | ??PORT1 | ??PORT2 | ??100 | ??200 |
| ??PE | ??1 | ??1 | ??1 | ??PORT2 | ??PORT1 | ??100 | ??200 |
Perhaps, PE can according to fTag=2 entrained in this Ethernet message and this Ethernet message entrained go into label=200, by the forwarding information corresponding relation shown in following table 7, table 8, corresponding output port when determining to transmit this Ethernet message, promptly outbound port is PORT2.
Table 6
| Equipment | ??fTag | ??VsiIndex | ??cTag | Inbound port |
| ??PE | ??2 | ??1 | ??1 | ??PORT1 |
| ??PE | ??1 | ??1 | ??2 | ??PORT2 |
Table 7
| Equipment | ??fTag | ??VsiIndex | Outgoing label | Outbound port |
| ??PE | ??2 | ??1 | ??100 | ??PORT2 |
| ??PE | ??1 | ??1 | ??100 | ??PORT1 |
Table 8
| Equipment | ??fTag | ??VsiIndex | Go into label |
| ??PE | ??2 | ??1 | ??200 |
Step 53, PE adopts the outbound port of determining, sends Ethernet message to be transmitted.
In this step, can also the Ethernet message is entrained, the control VID of Ethernet message itself is fTag=2 deletion (at this moment, this Ethernet message only carries the control VID=1 of UPE), and transmit amended Ethernet message (specifically can be forwarded to network equipment) as NPE.
So, in the specific embodiment of the Ethernet message forwarding method that the embodiment of the invention provides, this method is moved on provider edge equipment PE, when NPE when router one sends the Ethernet message (this Ethernet message carries the control VID=1 of Ethernet message itself), then the Ethernet message forwarding method that provides of the embodiment of the invention specifically can comprise as shown in Figure 6:
Step 61, PE receives NPE by inbound port 2 (PORT=2) and sends the Ethernet message that carries control VID=1.
Step 62, the inbound port that PE is adopted according to control VID=1 entrained in this Ethernet message (for PE, i.e. fTag=1) with when receiving this Ethernet message, promptly inbound port is PORT=2, corresponding output port when determining to transmit this Ethernet message, promptly outbound port is PORT=1.
Concrete, PE can be according to fTag=1 entrained in this Ethernet message and the inbound port that adopted when receiving this Ethernet message, be that inbound port is PORT=2, by the forwarding information corresponding relation shown in the table 5, corresponding output port is PORT=1 when determining to transmit this Ethernet message.
Perhaps, the outbound port that PE can be at first adopted according to fTag=1 entrained in this Ethernet message with when receiving this Ethernet message, be that outbound port is PORT=2, by the forwarding information corresponding relation shown in table 6, the table 7, corresponding output port when determining to transmit this Ethernet message, promptly outbound port is PORT=1.
Step 63, the outbound port by determining sends Ethernet message to be transmitted.
In this step, can also comprise control VID with PE itself, i.e. the device label of cTag=2, and PE issue, promptly outgoing label=100 are inserted in the Ethernet message, and are transmitted amended Ethernet message (specifically can be forwarded to the UPE place).
Concrete, can be according to the entrained fTag=1 of Ethernet message that receives, by forwarding information corresponding relation as shown in table 5, perhaps according to forwarding information corresponding relation shown in table 6, table 7, determine the device label that PE control VID corresponding with the entrained fTag=1 of the Ethernet message that receives and PE issue.
Above-mentioned describing as can be seen, the Ethernet message forwarding method that the embodiment of the invention provides, by reception Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID; According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port; Transmit described Ethernet message by described outbound port.Thereby under the situation that the mode that still adopts clean culture E-Packets, control VLAN ID and the forwarding information entrained according to the Ethernet message, determine to transmit Ethernet message corresponding output port, therefore avoided forwarding unit when transmitting the Ethernet message, need the study media access control address, guaranteed the Ethernet message forward efficiency of forwarding unit.
The embodiment of the invention also provides a kind of user side provider edge equipment (UPE:User FacingProvider Edge), and as shown in Figure 7, in virtual special LAN service network, this UPE specifically can comprise:
In the specific embodiment of the UPE that the embodiment of the invention provides, media interviews control (MAC:Media Access Control) address for fear of UPE study user, and still keep adopting the mode of clean culture to transmit the Ethernet message, at control plane, be the different control VLAN of each interface configuration on the UPE (VLAN:Virtual Local Area Network) sign (ID), promptly control VID, be used for distinct interface in the same virtual switch instance of unique identification (VSI:Virtual SwitchingInstance).
Need to prove that for fear of obscuring, the control VID of UPE self represents with cTag in the embodiment of the invention, and, represent with fTag for entrained control VID in the Ethernet message that receives.
In addition, at Forwarding plane, the embodiment of the invention has changed former with good grounds mac address table and has carried out the forwarding of Ethernet message, promptly according to MAC Address and VSI index (Vsilndex) as key value (key), definite correspondence transfers the Ethernet message pass-through mode of port, but adopt control VID (being fTag) entrained in the Ethernet message that sends according to far-end as the key value, and other relevant forwarding informations, definite correspondence transfers the Ethernet message pass-through mode of port, transmits the Ethernet message.
In the specific embodiment of the UPE that the embodiment of the invention provides, receiver module 710 specifically can receive waits to transmit the Ethernet message from user side equipment or provider edge equipment (PE:Provider Edge).Carry control VID in this Ethernet message.
In the specific embodiment of the UPE that the embodiment of the invention provides, determination module 720 specifically can comprise as shown in Figure 8:
Concrete, memory cell 721 can be in advance with the forwarding information among the UPE, such as the outgoing label of cTag or fTag, outbound port, inbound port, Vsilndex, forwarding unit with go into corresponding relation between label or the like, builds the table preservation.As above-mentioned table 1 to shown in the table 8.
Concrete, when waiting of receiving of receiver module 710 transmitted the Ethernet message for the Ethernet message transmitted from user side equipment, search the ingress port information that unit 722 is adopted according to the entrained control VLAN ID of this Ethernet message with when receiving this Ethernet message, memory cell 721 stored by searching, forwarding information corresponding relation as shown in table 1 determines to transmit this Ethernet message corresponding output port;
Perhaps,
Search the ingress port information that unit 722 is at first adopted according to the entrained control VLAN ID of this Ethernet message with when receiving this Ethernet message, memory cell 721 stored by searching, forwarding information corresponding relation as shown in table 2 is determined the control VLAN ID corresponding virtual exchange example index entrained with this Ethernet message; Then, search unit 722 control VLAN ID and the definite virtual switch instance index entrained according to this Ethernet message, memory cell 721 stored by searching, and forwarding information corresponding relation as shown in table 3 determines to transmit described Ethernet message corresponding output port.
When waiting of receiving of receiver module 710 transmitted the Ethernet message for the Ethernet message transmitted from the network side provider edge equipment, search the device label of unit 722 according to provider edge equipment entrained in the entrained control VLAN ID of this Ethernet message and this Ethernet message, memory cell 721 stored by searching, forwarding information corresponding relation as shown in table 1 determines to transmit this Ethernet message corresponding output port;
Perhaps,
In the specific embodiment of the UPE that the embodiment of the invention provides, forwarding module 730 specifically can pass through the outbound port that determination module 720 is determined, waits that with what receiver module 710 received transmitting the Ethernet message is forwarded to user side equipment or PE.
Concrete, when needs will be to be transmitted Ethernet message when being forwarded to PE, forwarding module 730 can be with the control VLAN ID corresponding UPE control VLAN ID entrained with this Ethernet message, and the device label of UPE issue, insert this Ethernet message, and send amended Ethernet message.
When needs will be to be transmitted Ethernet message when being forwarded to user side equipment, the control VLAN ID deletion that forwarding module 730 can be entrained with this Ethernet message, and send amended Ethernet message.
Above-mentioned describing as can be seen, the UPE that the embodiment of the invention provides, by reception Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID; According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port; Transmit described Ethernet message by described outbound port.Thereby under the situation that the mode that still adopts clean culture E-Packets, control VLAN ID and the forwarding information entrained according to the Ethernet message, determine to transmit Ethernet message corresponding output port, therefore avoided forwarding unit when transmitting the Ethernet message, need the study media access control address, guaranteed the Ethernet message forward efficiency of forwarding unit.
The embodiment of the invention also provides a kind of provider edge equipment (PE:Provider Edge), and as shown in Figure 9, in virtual special LAN service network, this PE specifically can comprise:
Receiver module 910 is used to receive Ethernet message to be transmitted, and described Ethernet message carries the control VLAN ID;
Determination module 920 is used for entrained control VLAN ID of Ethernet message and forwarding information according to described receiver module 910 receptions, determines to transmit described Ethernet message corresponding output port;
Forwarding module 930 is used for the outbound port determined by described determination module 920, transmits the Ethernet message that described receiver module 910 receives.
In the specific embodiment of the PE that the embodiment of the invention provides, media interviews control (MAC:Media Access Control) address for fear of PE study user, and still keep adopting the mode of clean culture to transmit the Ethernet message, at control plane, be the different control VLAN of each interface configuration on the PE (VLAN:Virtual Local Area Network) sign (ID), promptly control VID, be used for distinct interface in the same virtual switch instance of unique identification (VSI:Virtual Switching Instance).
Need to prove that for fear of obscuring, the control VID of PE self represents with cTag in the embodiment of the invention, and, represent with fTag for entrained control VID in the Ethernet message that receives.
In addition, at Forwarding plane, the embodiment of the invention has changed former with good grounds mac address table and has carried out the forwarding of Ethernet message, promptly according to MAC Address and VSI index (Vsilndex) as key value (key), definite correspondence transfers the Ethernet message pass-through mode of port, but adopt control VID (being fTag) entrained in the Ethernet message that sends according to far-end as the key value, and other relevant forwarding informations, definite correspondence transfers the Ethernet message pass-through mode of port, transmits the Ethernet message.
In the specific embodiment of the PE that the embodiment of the invention provides, receiver module 910 specifically can receive waits to transmit the Ethernet message from user side provider edge equipment (UPE:User Facing Provider Edge) or network side provider edge equipment (NPE:Network Facing Provider Edge).Carry control VID in this Ethernet message.
In the specific embodiment of the PE that the embodiment of the invention provides, determination module 920 specifically can comprise as shown in Figure 10:
Concrete, memory cell 921 can be in advance with the forwarding information among the PE, such as the outgoing label of cTag or fTag, outbound port, inbound port, Vsilndex, forwarding unit with go into corresponding relation between label or the like, builds the table preservation.As above-mentioned table 1 to shown in the table 8.
Concrete, when waiting of receiving of receiver module 910 transmitted the Ethernet message for the Ethernet message transmitted from NPE, search the ingress port information that unit 922 is adopted according to the entrained control VLAN ID of this Ethernet message with when receiving this Ethernet message, memory cell 921 stored by searching, forwarding information corresponding relation as shown in table 5 determines to transmit this Ethernet message corresponding output port;
Perhaps,
Search the ingress port information that unit 922 is at first adopted according to the entrained control VLAN ID of this Ethernet message with when receiving this Ethernet message, memory cell 921 stored by searching, forwarding information corresponding relation as shown in table 6 is determined the control VLAN ID corresponding virtual exchange example index entrained with this Ethernet message;
Then, search unit 922 control VLAN ID and the definite virtual switch instance index entrained according to this Ethernet message, memory cell 921 stored by searching, and forwarding information corresponding relation as shown in table 7 determines to transmit described Ethernet message corresponding output port.
When waiting of receiving of receiver module 910 transmitted the Ethernet message for the Ethernet message transmitted from UPE, search the device label of unit 922 according to UPE entrained in the entrained control VLAN ID of this Ethernet message and this Ethernet message, memory cell 921 stored by searching, forwarding information corresponding relation as shown in table 5 determines to transmit this Ethernet message corresponding output port;
Perhaps,
Then, search unit 922 control VLAN ID and the definite virtual switch instance index entrained according to this Ethernet message, memory cell 921 stored by searching, and forwarding information corresponding relation as shown in table 7 determines to transmit this Ethernet message corresponding output port.
In the specific embodiment of the PE that the embodiment of the invention provides, forwarding module 930 specifically can pass through the outbound port that determination module 920 is determined, waits that with what receiver module 910 received transmitting the Ethernet message is forwarded to UPE or NPE.
Concrete, when needs will be to be transmitted Ethernet message when being forwarded to UPE, forwarding module 930 can be with the control VLAN ID corresponding PE control VLAN ID entrained with this Ethernet message, and the device label of PE issue, insert this Ethernet message, and send amended Ethernet message.
When needs will be to be transmitted Ethernet message when being forwarded to NPE, the control VLAN ID deletion that forwarding module 930 can be entrained with this Ethernet message, and send amended Ethernet message.
Above-mentioned describing as can be seen, the PE that the embodiment of the invention provides, by reception Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID; According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port; Transmit described Ethernet message by described outbound port.Thereby under the situation that the mode that still adopts clean culture E-Packets, control VLAN ID and the forwarding information entrained according to the Ethernet message, determine to transmit Ethernet message corresponding output port, therefore avoided forwarding unit when transmitting the Ethernet message, need the study media access control address, guaranteed the Ethernet message forward efficiency of forwarding unit.
The embodiment of the invention also provides a kind of Ethernet message forwarding system, as shown in Figure 11, in virtual special LAN service network, this system specifically can comprise user side provider edge equipment 1110 (UPE:User Facing Provider Edge) and provider edge equipment 1120 (PE:Provider Edge).Wherein:
User side provider edge equipment 1110, be used to receive Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID, control VLAN ID and the forwarding information entrained according to described Ethernet message, determine to transmit described Ethernet message corresponding output port, and, described Ethernet message is forwarded to provider edge equipment 1120 or user side equipment by described outbound port;
In another specific embodiment of the Ethernet message forwarding system that the embodiment of the invention provides, as shown in Figure 12, this system can also comprise:
User side equipment 1130 is used for sending the Ethernet message to described user side provider edge equipment 1110, perhaps receives the Ethernet message that described user side provider edge equipment 1110 is transmitted;
Network side provider edge equipment 1140 is used for sending the Ethernet message to described provider edge equipment 1120, perhaps receives the Ethernet message that described provider edge equipment 1120 is transmitted.
The specific operation process of the Ethernet message forwarding system that the embodiment of the invention provides please refer to the technical scheme shown in accompanying drawing 2 to 10 that the invention described above embodiment provides, and does not repeat them here.
Above-mentioned describing as can be seen, the Ethernet message forwarding system that the embodiment of the invention provides, by reception Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID; According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port; Transmit described Ethernet message by described outbound port.Thereby under the situation that the mode that still adopts clean culture E-Packets, control VLAN ID and the forwarding information entrained according to the Ethernet message, determine to transmit Ethernet message corresponding output port, therefore avoided forwarding unit when transmitting the Ethernet message, need the study media access control address, guaranteed the Ethernet message forward efficiency of forwarding unit.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement, but the former is better execution mode under a lot of situation by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (15)
1, a kind of Ethernet message forwarding method is characterized in that, in virtual special LAN service network, described method comprises:
The Ethernet message that reception is to be transmitted, described Ethernet message carries the control VLAN ID;
According to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port;
Transmit described Ethernet message by described outbound port.
2, method according to claim 1, it is characterized in that, when described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from user side, correspondingly, described according to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port and comprise:
The ingress port information that the user side provider edge equipment is adopted according to the entrained control VLAN ID of described Ethernet message with when receiving described Ethernet message determines to transmit described Ethernet message corresponding output port;
Perhaps,
At first, the ingress port information that the user side provider edge equipment is adopted according to the entrained control VLAN ID of described Ethernet message with when receiving described Ethernet message is determined the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message; Then, described Ethernet message corresponding output port determined to transmit in control VLAN ID and definite described virtual switch instance index that the user side provider edge equipment is entrained according to described Ethernet message.
3, method according to claim 2 is characterized in that, describedly transmits described Ethernet message by described outbound port and comprises:
The corresponding user side provider edge equipment control VLAN ID of control VLAN ID that will be entrained with described Ethernet message, and the device label of described user side provider edge equipment issue, insert described Ethernet message, and send amended described Ethernet message.
4, method according to claim 1, it is characterized in that, when described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from provider edge equipment, correspondingly, described according to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port and comprise:
The user side provider edge equipment determines to transmit described Ethernet message corresponding output port according to the device label of described provider edge equipment entrained in entrained control VLAN ID of described Ethernet message and the described Ethernet message;
Perhaps,
At first, the user side provider edge equipment is determined the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message according to the device label of described provider edge equipment entrained in entrained control VLAN ID of described Ethernet message and the described Ethernet message; Then, described Ethernet message corresponding output port determined to transmit in control VLAN ID and definite described virtual switch instance index that the user side provider edge equipment is entrained according to described Ethernet message.
5, method according to claim 4 is characterized in that, describedly transmits described Ethernet message by described outbound port and comprises:
The control VLAN ID deletion that described Ethernet message is entrained, and send amended described Ethernet message.
6, method according to claim 1, it is characterized in that, when described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from the user side provider edge equipment, correspondingly, described according to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port and comprise:
Provider edge equipment determines to transmit described Ethernet message corresponding output port according to the device label of described user side provider edge equipment entrained in entrained control VLAN ID of described Ethernet message and the described Ethernet message;
Perhaps,
At first, provider edge equipment is determined the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message according to the device label of described user side provider edge equipment entrained in entrained control VLAN ID of described Ethernet message and the described Ethernet message; Then, described Ethernet message corresponding output port determined to transmit in control VLAN ID and definite described virtual switch instance index that provider edge equipment is entrained according to described Ethernet message.
7, method according to claim 6 is characterized in that, describedly transmits described Ethernet message by described outbound port and comprises:
The control VLAN ID deletion that described Ethernet message is entrained, and send amended described Ethernet message.
8, method according to claim 1, it is characterized in that, when described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from the network side provider edge equipment, correspondingly, described according to described control VLAN ID and forwarding information, determine to transmit described Ethernet message corresponding output port and comprise:
The ingress port information that provider edge equipment is adopted according to the entrained control VLAN ID of described Ethernet message with when receiving described Ethernet message determines to transmit described Ethernet message corresponding output port;
Perhaps,
At first, the ingress port information that provider edge equipment is adopted according to the entrained control VLAN ID of described Ethernet message with when receiving described message is determined the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message; Then, described Ethernet message corresponding output port determined to transmit in control VLAN ID and definite described virtual switch instance index that provider edge equipment is entrained according to described Ethernet message.
9, method according to claim 8 is characterized in that, describedly transmits described Ethernet message by described outbound port and comprises:
The corresponding provider edge equipment control VLAN ID of control VLAN ID that will be entrained with described Ethernet message, and the device label of described provider edge equipment issue, insert described Ethernet message, and send amended described Ethernet message.
10, a kind of user side provider edge equipment is characterized in that, in virtual special LAN service network, described equipment comprises:
Receiver module is used to receive Ethernet message to be transmitted, and described Ethernet message carries the control VLAN ID;
Determination module is used for entrained control VLAN ID of Ethernet message and forwarding information according to described receiver module reception, determines to transmit described Ethernet message corresponding output port;
Forwarding module is used for transmitting the Ethernet message that described receiver module receives by the definite outbound port of described determination module.
11, method according to claim 10, it is characterized in that, when described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from user side, the ingress port information that described forwarding information is adopted when being the described Ethernet message of reception, ingress port information that is adopted when perhaps, described forwarding information is the described Ethernet message of reception or the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message;
When described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from provider edge equipment, described forwarding information is the device label of described provider edge equipment entrained in the described Ethernet message, perhaps, described forwarding information is the device label of described provider edge equipment entrained in the described Ethernet message or the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message.
12, a kind of provider edge equipment is characterized in that, in virtual special LAN service network, described equipment comprises:
Receiver module is used to receive Ethernet message to be transmitted, and described Ethernet message carries the control VLAN ID;
Determination module is used for entrained control VLAN ID and the forwarding information of Ethernet message according to described receiver module reception, determines to transmit described Ethernet message corresponding output port;
Forwarding module is used for transmitting the Ethernet message that described receiver module receives by the definite outbound port of described determination module.
13, method according to claim 12, it is characterized in that, when described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from the user side provider edge equipment, described forwarding information is the device label of described user side provider edge equipment entrained in the described Ethernet message, perhaps, described forwarding information is the device label of described user side provider edge equipment entrained in the described Ethernet message or the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message;
When described reception Ethernet message to be transmitted is when receiving the Ethernet message of transmitting from the network side provider edge equipment, the ingress port information that described forwarding information is adopted when being the described Ethernet message of reception, ingress port information that is adopted when perhaps, described forwarding information is the described Ethernet message of reception or the control VLAN ID corresponding virtual exchange example index entrained with described Ethernet message.
14, a kind of Ethernet message forwarding system, its feature exists, and in virtual special LAN service network, described system comprises user side provider edge equipment and provider edge equipment, wherein:
The user side provider edge equipment, be used to receive Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID, control VLAN ID and the forwarding information entrained according to described Ethernet message, determine to transmit described Ethernet message corresponding output port, and, described Ethernet message is forwarded to provider edge equipment or user side equipment by described outbound port;
Provider edge equipment, be used to receive Ethernet message to be transmitted, described Ethernet message carries the control VLAN ID, control VLAN ID and the forwarding information entrained according to described Ethernet message, determine to transmit described Ethernet message corresponding output port, and, described Ethernet message is forwarded to network side provider edge equipment or user side provider edge equipment by described outbound port.
15, system according to claim 14 is characterized in that, described system also comprises:
User side equipment is used for sending the Ethernet message to described user side provider edge equipment, perhaps receives the Ethernet message that described user side provider edge equipment is transmitted;
The network side provider edge equipment is used for sending the Ethernet message to described provider edge equipment, perhaps receives the Ethernet message that described provider edge equipment is transmitted.
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