CN101217470B - Method and device for forwarding message - Google Patents
Method and device for forwarding message Download PDFInfo
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- CN101217470B CN101217470B CN2007103060714A CN200710306071A CN101217470B CN 101217470 B CN101217470 B CN 101217470B CN 2007103060714 A CN2007103060714 A CN 2007103060714A CN 200710306071 A CN200710306071 A CN 200710306071A CN 101217470 B CN101217470 B CN 101217470B
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Abstract
The invention discloses a method and device for forwarding message, which is applied to multi-assignment group network and belongs to communication technology field. The method comprises: receiving the message sent by CE; choosing a pseudo wire in the preset pseudo wire biding group or choosing a port in the preset port binding group. The pseudo wire in the pseudo wire biding group is connected with at lease one first PE; the port in the port binding group is connected with at lease one second PE. The message is forwarded to corresponding PE by the chosen pseudo wire or port. The device consists of a receiving module, a selecting module and a transmit module. The invention forwards message by choosing one pseudo wire or one port, so a plurality of links together share the message forwarding work. In prior art, the spare link does not forward message when the spare link is in the idle status; compared with the prior art, the invention adequately enhances bandwidth utilization, ensures that the middle PE equipment can not get the same message and enhances forwarding accuracy and transmission reliability.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method and apparatus that E-Packets.
Background technology
MPLS (Multiprotocol Label Switch; Multiprotocol label switching) L2VPN (Layer 2Virtual Private Network; Layer 2 virtual private network) two-layer VPN service based on the MPLS network is provided, i.e. transparent transmission user Layer 2 data on the MPLS network.From user's angle, the MPLS network is two layers of switching network, can between different nodes, set up two layers of connection.Be illustrated in figure 1 as the basic networking sketch map of L2VPN, CE1 (Customer Edge Device, user network boundary device) and PE1 (Provider Edge Device, carrier network edge device) link to each other, and PE1 links to each other with PE2, and PE2 links to each other with CE2.Communication network has put forward increasingly high requirement to transmission reliability at present, for the fault that takes place in the transmission course, has the kinds of protect means in the prior art, like FRR (Fast ReRoute, heavy-route fast) technology, double-attaching technology or the like.
Existing many ownership technical schemes are following: be illustrated in figure 2 as CE dual-homing networking sketch map, CE1 links to each other with switch S1, and S1 passes through port PO RT1 and PE1, and links to each other with PE1 ' through port PO RT2, and PE1 all links to each other with PE2 with PE1 ', and PE2 links to each other with CE2; Two forward-path: CE1-＞PORT1-＞PE1-＞PE2-＞CE2 of existence and CE1-＞PORT2-＞PE1 ' between CE1 and CE2-＞PE2-＞CE2; Backup link that link is another link wherein when wherein one when breaking down, replaces converting flow by another paths.
In realizing process of the present invention, the inventor finds that above-mentioned prior art has following shortcoming at least:
When adopting many ownership technological; Backup link is not worked under the normal condition, and bandwidth availability ratio is lower, when switching to backup link when breaking down; If CE equipment is ETHERNET (Ethernet) medium; Then generally the MAC Address through removing PE then amount of broadcast traffic reach the purpose of handoff links, therefore can cause producing some unnecessary broadcast traffics, the waste resource.
Summary of the invention
In order to improve the utilance of message transmission Time Bandwidth, the embodiment of the invention provides a kind of method and apparatus that E-Packets.Said technical scheme is following:
On the one hand, a kind of method that E-Packets is applied to multi-home networking, and said method comprises:
Between at least one first carrier network edge device and the carrier network edge device that links to each other with user network boundary device, set up pseudo-line; With carrier network edge device that said user network boundary device links to each other on, each is bundled with all that this port is the corresponding pseudo-line of port that said user network boundary device links to each other, obtain pseudo-line binding group;
With switch that said user network boundary device links to each other on, the port that will link to each other with said at least one first carrier network edge device obtains the Port BindingBundling group according to carrying out the binding of symmetry with the pseudo-line binding group that has obtained; Wherein, the binding of the port on the said switch being carried out symmetry is meant that said Port BindingBundling group and said pseudo-line binding group have corresponding relation, corresponding Port BindingBundling group and PW binding group, and port number wherein is identical with the PW number;
Receive the user network boundary device message sent;
In preparatory said pseudo-line binding group, select a pseudo-line; Or in said Port BindingBundling group, select a port; Pseudo-line in the said pseudo-line binding group links to each other with at least one first carrier network edge device, and the port in the said Port BindingBundling group links to each other with said at least one first carrier network edge device;
Pseudo-line or port through said selection are transmitted said message to corresponding carrier network edge device.
On the other hand, a kind of equipment that E-Packets is applied to multi-home networking, and said equipment comprises:
Set up module, be used between said equipment and at least one first carrier network edge device, setting up pseudo-line,, obtain pseudo-line binding group each bundles with continuous all that this port is the corresponding pseudo-line of port of user network boundary device on the said equipment;
Receiver module is used to receive the user network boundary device message sent;
Select module, be used for selecting a pseudo-line, or in the Port BindingBundling group, select a port in said pseudo-line binding group; Pseudo-line in the said pseudo-line binding group links to each other with at least one first carrier network edge device, and said Port BindingBundling group is obtained according to carrying out symmetrical binding with the pseudo-line binding group of setting up in advance by the port that links to each other with said at least one first carrier network edge device on the switch; Wherein, the binding of the port on the switch being carried out symmetry is meant that said Port BindingBundling group and said pseudo-line binding group have corresponding relation, corresponding Port BindingBundling group and PW binding group, and port number wherein is identical with the PW number; Port in the said Port BindingBundling group links to each other with at least one first carrier network edge device;
Forwarding module is used for pseudo-line or the port selected through said selection module, transmits the message that said receiver module receives and gives corresponding carrier network edge device.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
Through after receiving message, in pseudo-line binding group, selecting a pseudo-line or in the Port BindingBundling group, selecting a port to carry out message and transmit; Make multilink share message forwarding work jointly; Be in idle condition with backup link in the prior art and do not carry out message and transmit and to compare, improved bandwidth availability ratio fully.Only select a PW or a port to transmit when E-Packeting, the PE equipment in the middle of having guaranteed can not received identical message, has improved the accuracy rate of forwarding and the reliability of transmission.
Description of drawings
Fig. 1 is the basic networking sketch map of L2VPN in the prior art;
Fig. 2 is a CE dual-homing networking sketch map in the prior art;
Fig. 3 is the method flow diagram that E-Packets that the embodiment of the invention 1 provides;
Fig. 4 is the CE dual-homing networking sketch map that the embodiment of the invention 1 provides;
Fig. 5 is the equipment structure chart that E-Packets that the embodiment of the invention 2 provides.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, embodiment of the present invention is done to describe in detail further below in conjunction with accompanying drawing.
The method that E-Packets that the embodiment of the invention provides specifically comprises: receive the user network boundary device message sent; In the pseudo-line binding group of setting up in advance, select a pseudo-line, or in the Port BindingBundling group of setting up in advance, select a port; Pseudo-line in the said pseudo-line binding group links to each other with at least one first carrier network edge device, and the port in the said Port BindingBundling group links to each other with at least one second carrier network edge device; Transmit the message of receiving through selected pseudo-line or port and give corresponding carrier network edge device.Because the multilink that links to each other with PE all E-Packets, rather than the mode of active/standby link switchover, can greatly improve bandwidth utilization.
Embodiment 1
Referring to Fig. 3, the embodiment of the invention provides a kind of method that E-Packets, and is applied to multi-home networking, specifically comprises:
Step 101: at least one PE in the middle of the network and with PE that CE links to each other between every link on set up PW (Pseudo Wire, pseudo-line), for the situation of multi-home networking, can obtain many PW.
Step 102: with PE that CE links to each other on, to each port that links to each other with CE, all PW that this port is corresponding bundle; Obtain PW binding group; And with switch that CE links to each other on, a plurality of ports that link to each other with at least one the 2nd PE are carried out the binding of symmetry, obtain the Port BindingBundling group.
It is to be that unit bundlees with the port that links to each other with CE that PW is bundled, and promptly PE goes up the corresponding PW binding group of port that each and CE link to each other, and a plurality of PW binding groups are to identify by the port that links to each other with CE; As there being two ports to link to each other on the PE with CE; Be respectively port one and port 2, wherein the corresponding PW binding of port one group 1 comprises PW1 and PW2; Port 2 corresponding PW binding groups 2 comprise PW3 and PW4 or the like.
The binding of port on the switch being carried out symmetry is meant that Port BindingBundling group and PW binding group have corresponding relation; Corresponding Port BindingBundling group and PW binding group; Port number wherein is identical with the PW number; Through symmetry binding, packet loss and avoid causing loop broadcasting or the like not in the time of can guaranteeing that switch E-Packets.
Step 103: PE that links to each other with CE or switch receive the CE message sent.
Step 104: the PE that links to each other with CE selects a PW in the PW binding group of setting up in advance; The switch that perhaps links to each other with CE is selected a port in the Port BindingBundling group.
Wherein, select PW or select port that multiple mode is arranged, include but not limited to following dual mode:
1) passive PFC method
Select same PW or same port to E-Packet to the message with same characteristic features, identical characteristic includes but not limited to that the target MAC (Media Access Control) address of message is identical, source MAC is identical or not only identical the but also source MAC of target MAC (Media Access Control) address was identical or the like.For example, adopting hash algorithm that the PW quantity in target MAC (Media Access Control) address and the PW binding group is divided by and get surplusly, is that the sequence number of PW selects corresponding PW to transmit or the like to get surplus result.
2) mode packet-by-packet
According to the sequencing of message, in PW binding group, select a PW or in the Port BindingBundling group, select a port to E-Packet, include but not limited to selective sequential, inverted sequence selection or the like.For example, two PW are arranged in the PW binding group, be respectively PW1 and PW2; Adopt hash algorithm to the sequence number of message and the PW quantity in the PW binding group be divided by get surplus; To get surplus result is that the sequence number of PW selects corresponding PW to realize selective sequential, and promptly message 1 selects PW1 to transmit, and message 2 selects PW2 to transmit; Message 3 selects PW1 to transmit, and message 4 selects PW2 to transmit or the like.
For example, referring to Fig. 4, adopt the dual-homing networking mode.The switch S1 that links to each other with CE1 links to each other with PE1 through port PO RT1; Link to each other with PE1 ' through port PO RT2, the PE2 that links to each other with CE2 links to each other with PE1 ' with PE1 respectively, on the link between PE1 and the PE2, sets up PW1; On the link between PE1 ' and the PE2, set up PW2; Article two, PW passes through same port and links to each other with CE2, and PW1 and PW2 are bundled, and obtains PW binding group.When PE2 receives the CE2 message sent, give corresponding PE according to from PW1 and PW2, select a PW to transmit this message by the mode of stream, as selecting PW1 to E-Packet or selecting PW2 to E-Packet to PE1 ' to PE1.
Further, when the PE that links to each other with CE detects at least one PE equipment fault or detects link failure, or the switch that links to each other with CE is when detecting at least one the 2nd PE equipment fault or detecting link failure, and step 104 is specially:
In PW binding group, select one do not break down and the PW that also do not break down of PE equipment, or in the Port BindingBundling group, select institute's connected link with connect the port that PE does not all break down, thereby assurance E-Packets through trouble-free link.Wherein, PE that links to each other with CE or switch can adopt detection technique end to end, like BFD (Bidirectional Forwarding Detection, two-way forwarding detects) agreement or OAM (Operations Administration and Maintenance; Operations,Administration And Maintenance) agreement or the like; Whether the PW link in the PW binding group detects, and also can pass through other fault detect and announcement means, detect link and break down.
Step 105: transmit the message of receiving through selected PW or port and give corresponding PE, finish then.
Present embodiment is through after receiving message; In the PW binding group of setting up in advance, select a PW or in the Port BindingBundling group of setting up in advance, select a port to carry out the message forwarding; Make multilink share message forwarding work jointly; Be in idle condition with backup link in the prior art and do not carry out message and transmit and to compare, improved bandwidth availability ratio fully.Only select a PW or a port to transmit when E-Packeting, the PE equipment in the middle of having guaranteed can not received identical message, has improved the accuracy rate of transmitting.When breaking down, the port that only needs to select the PW that do not break down or institute's connected link not to break down E-Packets, and handles simply, realizes easily, has reduced the requirement to equipment, and has reduced the packet loss quantity that fault causes effectively.
Embodiment 2
Referring to Fig. 5, the embodiment of the invention also provides a kind of equipment that E-Packets, and is applied to multi-home networking, specifically comprises:
Receiver module is used to receive the user network boundary device message sent;
Select module, be used for selecting a pseudo-line, or in the Port BindingBundling group of setting up in advance, select a port in the pseudo-line binding group of setting up in advance; Pseudo-line in this puppet line binding group links to each other with at least one first carrier network edge device, and the port in this Port BindingBundling group links to each other with at least one second carrier network edge device;
Forwarding module is used for pseudo-line or port through selecting module to select, and the message that the forwarding receiver module is received is given corresponding carrier network edge device.
When the said equipment was specially the carrier network edge device, this equipment can also comprise:
Set up module; Be used between the carrier network edge device in the middle of this equipment and above-mentioned at least one first network, setting up pseudo-line; To each bundles with continuous all that this port is the corresponding pseudo-line of port of said user network boundary device on the equipment, obtain above-mentioned pseudo-line binding group.
When the said equipment was specially switch, the above-mentioned pseudo-line binding group of setting up in advance was specially the first pseudo-line binding group, and this equipment can also comprise:
Set up module; Be used for the port that links to each other with above-mentioned at least one second carrier network edge device on the equipment according to bundling with the second pseudo-line binding group symmetrical manner of setting up in advance; Obtain said Port BindingBundling group, the pseudo-line binding group that this second pseudo-line binding group is set up for the carrier network edge device that links to each other with user network boundary device in advance.
Wherein, select module specifically to comprise:
By the stream selected cell, be used for selecting same pseudo-line or selecting the rule of same port according to message with same characteristic features, in the pseudo-line binding group of setting up in advance, select a pseudo-line, or in the Port BindingBundling group of setting up in advance, select a port; Pseudo-line in this puppet line binding group links to each other with at least one first carrier network edge device, and the port in this Port BindingBundling group links to each other with at least one second carrier network edge device.
Perhaps select module specifically to comprise:
Packet-by-packet selected cell is used in the pseudo-line binding group of setting up in advance, selecting a pseudo-line, or in the Port BindingBundling group of setting up in advance, selecting a port according to the rule of the message of receiving with corresponding pseudo-line of fixing order or port; Pseudo-line in this puppet line binding group links to each other with at least one first carrier network edge device, and the port in this Port BindingBundling group links to each other with at least one second carrier network edge device.
Further, select module specifically to comprise:
The fault selected cell; If be used for detecting at least one the first carrier network edge device fault that links to each other with the pseudo-line of the pseudo-line binding group of setting up in advance; Or detect with the Port BindingBundling group of setting up in advance at least one second carrier network edge device fault of linking to each other of port; Or detect link failure; Then in this puppet line binding group, select one do not break down and the pseudo-line that also do not break down of carrier network edge device, or in this Port BindingBundling group, select one link and the port that all do not break down of carrier network edge device.
Equipment in the present embodiment can be the PE equipment that links to each other with CE, also can be the switch that links to each other with CE.
Present embodiment is through after receiving message; In pseudo-line binding group, select a pseudo-line or in the Port BindingBundling group, select a port to carry out the message forwarding; Make multilink share message forwarding work jointly; Be in idle condition with backup link in the prior art and do not carry out message and transmit and to compare, utilized bandwidth resources fully, improved bandwidth availability ratio.Only select a PW or a port to transmit when E-Packeting, the PE equipment in the middle of having guaranteed can not received identical message, has improved the accuracy rate of transmitting.When breaking down, the port that only needs to select the PW that do not break down or institute's connected link not to break down E-Packets, and handles simply, realizes easily, has reduced the requirement to equipment, and has reduced the packet loss quantity that fault causes effectively.
The embodiment of the invention can utilize software to realize, corresponding software can be stored in the storage medium that can read, in the hard disk or buffer memory like PE or switch.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a method that E-Packets is characterized in that, is applied to multi-home networking, and said method comprises:
Between at least one first carrier network edge device and the carrier network edge device that links to each other with user network boundary device, set up pseudo-line; With carrier network edge device that said user network boundary device links to each other on, each is bundled with all that this port is the corresponding pseudo-line of port that said user network boundary device links to each other, obtain pseudo-line binding group;
With switch that said user network boundary device links to each other on, the port that will link to each other with said at least one first carrier network edge device obtains the Port BindingBundling group according to carrying out the binding of symmetry with the pseudo-line binding group that has obtained; Wherein, the binding of the port on the said switch being carried out symmetry is meant that said Port BindingBundling group and said pseudo-line binding group have corresponding relation, corresponding Port BindingBundling group and PW binding group, and port number wherein is identical with the PW number;
Receive the user network boundary device message sent;
In said pseudo-line binding group, select a pseudo-line; Or in said Port BindingBundling group, select a port; Pseudo-line in the said pseudo-line binding group links to each other with at least one first carrier network edge device, and the port in the said Port BindingBundling group links to each other with said at least one first carrier network edge device;
Pseudo-line or port through said selection are transmitted said message to corresponding carrier network edge device.
2. the method that E-Packets according to claim 1 is characterized in that, saidly in the pseudo-line binding group of setting up in advance, selects a pseudo-line, or in the Port BindingBundling group of setting up in advance, selects a port, is specially:
Select same pseudo-line or select the rule of same port according to message, in the pseudo-line binding group of setting up in advance, select a pseudo-line, or in the Port BindingBundling group of setting up in advance, select a port with same characteristic features;
Or, in the pseudo-line binding group of setting up in advance, select a pseudo-line, or in the Port BindingBundling group of setting up in advance, select a port according to the rule of the message of receiving with corresponding pseudo-line of fixing order or port.
3. based on the described method that E-Packets of claim 1, it is characterized in that, saidly in the pseudo-line binding group of setting up in advance, select a pseudo-line, or in the Port BindingBundling group of setting up in advance, select a port, specifically comprise:
If detect with the pseudo-line binding group of setting up in advance at least one first carrier network edge device fault of linking to each other of pseudo-line; Or detect with the Port BindingBundling group of setting up in advance at least one first carrier network edge device fault of linking to each other of port; Or detect link failure; Then in said pseudo-line binding group, select one do not break down and the pseudo-line that also do not break down of carrier network edge device, or in said Port BindingBundling group, select one link and the port that all do not break down of carrier network edge device.
4. an equipment that E-Packets is characterized in that, is applied to multi-home networking, and said equipment comprises:
Set up module, be used between said equipment and at least one first carrier network edge device, setting up pseudo-line,, obtain pseudo-line binding group each bundles with continuous all that this port is the corresponding pseudo-line of port of user network boundary device on the said equipment;
Receiver module is used to receive the user network boundary device message sent;
Select module, be used for selecting a pseudo-line, or in the Port BindingBundling group, select a port in said pseudo-line binding group; Pseudo-line in the said pseudo-line binding group links to each other with at least one first carrier network edge device, and said Port BindingBundling group is obtained according to carrying out symmetrical binding with the pseudo-line binding group of setting up in advance by the port that links to each other with said at least one first carrier network edge device on the switch; Wherein, the binding of the port on the switch being carried out symmetry is meant that said Port BindingBundling group and said pseudo-line binding group have corresponding relation, corresponding Port BindingBundling group and PW binding group, and port number wherein is identical with the PW number; Port in the said Port BindingBundling group links to each other with at least one first carrier network edge device;
Forwarding module is used for pseudo-line or the port selected through said selection module, transmits the message that said receiver module receives and gives corresponding carrier network edge device.
5. the equipment that E-Packets according to claim 4 is characterized in that, said selection module specifically comprises:
By the stream selected cell, be used for selecting same pseudo-line or selecting the rule of same port according to message with same characteristic features, in the pseudo-line binding group of setting up in advance, select a pseudo-line, or in the Port BindingBundling group of setting up in advance, select a port; Pseudo-line in the said pseudo-line binding group links to each other with at least one first carrier network edge device, and the port in the said Port BindingBundling group links to each other with at least one first carrier network edge device.
6. the equipment that E-Packets according to claim 4 is characterized in that, said selection module specifically comprises:
Packet-by-packet selected cell is used in the pseudo-line binding group of setting up in advance, selecting a pseudo-line, or in the Port BindingBundling group of setting up in advance, selecting a port according to the rule of the message of receiving with corresponding pseudo-line of fixing order or port; Pseudo-line in the said pseudo-line binding group links to each other with at least one first carrier network edge device, and the port in the said Port BindingBundling group links to each other with at least one first carrier network edge device.
7. the equipment that E-Packets according to claim 4 is characterized in that, said selection module specifically comprises:
The fault selected cell; If be used for detecting at least one the first carrier network edge device fault that links to each other with the pseudo-line of the pseudo-line binding group of setting up in advance; Or detect with the Port BindingBundling group of setting up in advance at least one first carrier network edge device fault of linking to each other of port; Or detect link failure; Then in said pseudo-line binding group, select one do not break down and the pseudo-line that also do not break down of carrier network edge device, or in said Port BindingBundling group, select one link and the port that all do not break down of carrier network edge device.
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| CN2007103060714A CN101217470B (en) | 2007-12-29 | 2007-12-29 | Method and device for forwarding message |
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| CN2007103060714A CN101217470B (en) | 2007-12-29 | 2007-12-29 | Method and device for forwarding message |
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| CN101217470B true CN101217470B (en) | 2012-11-21 |
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| CN101594310B (en) * | 2009-07-14 | 2012-09-05 | 华为技术有限公司 | Method, device and system for transmitting message |
| CN102025586B (en) * | 2009-09-09 | 2014-07-09 | 华为技术有限公司 | Intercommunicating method, device and system for multiple protocol label switching network and Ethernet |
| CN102055647A (en) * | 2009-11-03 | 2011-05-11 | 中兴通讯股份有限公司 | Three-layer virtual private network (VPN) access method and system |
| CN102468977B (en) * | 2010-11-19 | 2016-03-30 | 中兴通讯股份有限公司 | The guard method of Packet Transport Network and device |
| CN102215167B (en) * | 2011-06-03 | 2014-09-03 | 中国联合网络通信集团有限公司 | Data transmission method, device and system |
| WO2012103729A1 (en) * | 2011-06-30 | 2012-08-09 | 华为技术有限公司 | Tunnel configuration method and device |
| CN106992929A (en) * | 2016-01-21 | 2017-07-28 | 中兴通讯股份有限公司 | A kind of pseudo-line service retransmission method and device |
| CN106992927A (en) * | 2016-01-21 | 2017-07-28 | 中兴通讯股份有限公司 | A kind of pseudo-line service retransmission method and device |
| CN109165506B (en) * | 2018-07-05 | 2021-07-20 | 河南中烟工业有限责任公司 | Online virus searching and killing and virus protecting method for industrial control fault-tolerant server |
| CN109995651B (en) * | 2019-03-28 | 2021-05-14 | 新华三技术有限公司 | Pseudo wire establishing method and device |
| CN110138605B (en) * | 2019-04-30 | 2022-06-17 | 浙江亿邦通信科技有限公司 | PW switching method and device based on virtual port |
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