CN101321133A - Method and apparatus for processing packet - Google Patents
Method and apparatus for processing packet Download PDFInfo
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- CN101321133A CN101321133A CNA2008101377086A CN200810137708A CN101321133A CN 101321133 A CN101321133 A CN 101321133A CN A2008101377086 A CNA2008101377086 A CN A2008101377086A CN 200810137708 A CN200810137708 A CN 200810137708A CN 101321133 A CN101321133 A CN 101321133A
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Abstract
This invention discloses a massage processing method and device, wherein the method includes: a node judges whether its address is in accordance with a target address of its received message, and judges whether the label of the ring where the node is located is in accordance with the label of the taken ring in the message; the node executes the subsequent treatment to the message based on the judged result. The node is enabled to accurately remove the message at RPR ring net and solve the problem of network resource waste through using this invention.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of message processing method and device.
Background technology
Resilient Packet Ring (Resilient Packet Ring, RPR) technology is a kind of looped network technology that gives two layers, adopt the bidirectional loop network topological structure, be divided into looped network (ring net) 0 and ring net 1, and, ring net 0 and ring net 1 can use simultaneously, and (Synchronous Digital Hierarchy SDH) compares the bandwidth availability ratio that has improved looped network with SDH (Synchronous Digital Hierarchy).The RPR technology provides flexible network topology protection and the instant switching services of safety, and the RPR technology can be finished in 50ms and switch when looped network breaks down, and guaranteeing has data path between two side gussets of fault point.
The RPR looped network can be supported 255 nodes at most, and wherein, message format is as shown in table 1.
| TTL (1 byte) | Message life duration |
| Basic ring control (1 byte) | Frame type, COS, basic control information |
| Target MAC (Media Access Control) address (6 byte) | 48 of destination addresses |
| Source MAC (6 byte) | 48 of source addresses |
| TTL (Time to Live) Baseline (1 byte) | TTL (Time to Live) Baseline is used for calculating the jumping figure of source node |
| Expanded ring control (1 byte) | The expansion control information |
| HEX (2 byte) | |
| Protocol type (2 byte) | Contained payload type |
| Data (N byte) | Payload |
| FCS (4 byte) | The verification of payload |
Table 1
In the RPR technology, the definition of basic ring control (Base control) byte is as shown in table 2:
Table 2
Wherein, relevant field implication as follows: ri, the ID of ring is 1 or 0; Whether fe follows fair algorithm; Ft, the type of marker frames; Sc, the COS of frame; Whether we needs loopback; Panity wouldn't introduce.
The definition of expanded ring control (Extended control) byte is as shown in table 3:
Table 3
Wherein, relevant field implication as follows: ps prevents that frame is out-of-sequence in Wrapping ring; So represents whether this frame follows strict sequence requirement; Res keeps, and regulation is changed to 0 entirely with this field in the agreement at present.
In table 1, the value of life time length (TTL) should be more than or equal to the jumping figure to destination node, and every the value of TTL subtracts 1 in the message through a node, and when TTL was 0, message was peeled off from looped network.
Fig. 1 is an example of topology of networks in actual applications.Wherein, comprise 1 to 9 altogether 9 nodes and two looped network ring net 0 and ring net 1, when looped network broke down, the topology of RPR looped network was switched the two kinds of patterns that mainly contained: Wrapping pattern and Steering pattern.
As shown in Figure 2, similar with Fig. 1,9 nodes are arranged on the looped network shown in Figure 2, node 9 arrives node 6 to the business of node 6 through ring net 1 node 8 and node 7; And, as shown in Figure 2, suppose the link occurs fault between node 7 and the node 8.
In the Wrapping pattern, node 9 is to the business of node 6, switch at node 8 and node 7 respectively, particularly, professional trend is that node 9 → node 8 is on ring net1, be switched on the ring net 0 at node 8 then, move towards to from node 8 → node 9 → node 1 → node 2 → node 3 → node 4 → node 5 → node 6 → node 7, and then be switched on the ring net 0 and at node 7 and deliver to node 6 data.After fault was got rid of, business can return to original path again, promptly on ring net 1 from node 9 → node 8 → node 7 → node 6, on the outer shroud of node 6, receive at last.
In the Sterring pattern, after the link generation problem of finding 8 of node 7 and nodes, business is directly walked ring net 0 and is given node 6, and the path is node 9 → node 1 → node 2 → node 3 → node 4 → node 5 → node 6.
In existing technology, mainly contain two kinds of message stripping meanss, specific as follows:
First kind: message carries out source address (sa) and peels off on looped network.When getting back to source node on looped network when, data message is stripped from from looped network.The agreement regulation, message only carries out source address on the hoop of source peels off, and peels off and can not carry out source address on opposite hoop.Just can only on ring net 0, be peeled off, and can only on ring net 1, be peeled off by source address from the message of ring net 1 ring by source address from the message of ring net 0 ring.Therefore, can exist part when fault produces by around still transmitting on the hoop on the contrary during in fault recovery to the message of opposite hoop, and these messages are because former ring identifies (ring ID) when transmitting to opposite hoop, do not carry out the gravity treatment sign, so it is different with the hoop of current transmission, can't be peeled off by source address, thereby can on looped network, transmit always, and take the looped network bandwidth;
Second kind: message is every on looped network, and just the value with TTL subtracts 1 through a node, and when TTL reduced to 0, message was peeled off from looped network.Agreement regulation, when message by around the time to opposite hoop, TTL does not do and subtracts 1 operation, only just does to subtract 1 and operate on the hoop of source.Therefore, in the time of can existing partial fault to produce by around still on opposite hoop, transmitting during in fault recovery to the message of opposite hoop, these messages are because ring ID is different with the hoop of current transmission, TTL does not do and subtracts 1 operation, therefore can not be owing to TTL=0 is stripped from, thereby can on looped network, transmit always, take the looped network bandwidth.
In sum, after ring network fault is eliminated, the message that the last branch of looped network is rapped around to another hoop also can transmit on opposite hoop, can not peel off from looped network because ring sign (ring ID) is different with the hoop of current data transmission, thereby make these messages will take the looped network bandwidth always, cause the effective bandwidth on the looped network to diminish.
At present, at because message can't correctly be peeled off the Internet resources that caused by node and be disabled the problem that takies on network, effective solution is not proposed as yet.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of message processing method and device, can't correctly be peeled off the Internet resources that caused with message in the solution correlation technique by node on network and be disabled the problem that takies.
According to an aspect of the present invention, provide a kind of message processing method.
Message processing method according to the present invention comprises: node judges whether its address is consistent with the destination address of the message of its reception, and whether the sign of the ring that carries in the node sign of judging its place ring and the message is consistent; Node carries out subsequent treatment according to judged result to message.
Wherein, under the situation of the sign unanimity of the ring that carries in the sign of and node place consistent with the destination address of message ring and the message in the address of node, node is peeled off message, and the reserved field of the message after will peeling off is changed to 1.
And, under the consistent situation of the sign of the ring that carries in the sign of and node place inconsistent ring and the message in the address of node with the destination address of message, node judges whether the reserved field of message is 1, and peel off message being judged as under the situation that is, otherwise reserved field is changed to 1 and E-Packet.
And, under the inconsistent situation of sign of the ring that carries in the sign of and node place consistent with the destination address of message ring and the message in the address of node, node subtracts the life time length of message the life time length that obtains after 1 as the new life time span of message and E-Packet.
And under the inconsistent situation of sign of the ring that carries in the sign of inconsistent and node place ring and the message at the destination address of address of node and message, node E-Packets.
According to an aspect of the present invention, provide a kind of message process device.
Message process device according to the present invention is positioned at the node of Resilient Packet Ring, and this device comprises: first judge module, and whether the address that is used for decision node is consistent with the destination address of the message of node reception; Second judge module, whether the sign that is used for decision node place ring is consistent with the sign of the ring that message carries; Processing module is used for according to the judged result of judge module message being carried out subsequent treatment.
Wherein, in the judged result of first judge module is under the situation of sign unanimity of the ring that carries in for the sign of node place ring and message of the judged result of address of node and second judge module consistent with the destination address of message, processing module is peeled off message, and the reserved field of the message after will peeling off is changed to 1.
And, this device can further comprise: the 3rd judge module, under the consistent situation of the sign of the ring that the judged result that is used for judged result at first judge module and is address of node and second judge module inconsistent with the destination address of message is carried for the sign and the message of node place ring, whether the reserved field of judging message is 1, and peel off message by processing module being judged as under the situation that is, otherwise processing module is changed to 1 and E-Packet with reserved field.
And, in the judged result of first judge module is under the inconsistent situation of sign of the ring that carries in for the sign of node place ring and message of the judged result of address of node and second judge module consistent with the destination address of message, and processing module subtracts the life time length of message the life time length that obtains after 1 as the new life time span of message and E-Packet.
In addition, in the judged result of first judge module is that processing module E-Packets under the inconsistent situation of sign of the ring that carries in for the sign of node place ring and message of the judged result of inconsistent and second judge module of the destination address of address of node and message.
By technique scheme of the present invention, can make node on the RPR looped network, correctly peel off message, solved the problem of network resources waste.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is a RPR ring network structure schematic diagram of the prior art;
Fig. 2 is the schematic diagram that RPR looped network of the prior art is switched when breaking down;
Fig. 3 is the flow chart according to the message processing method of the inventive method embodiment;
Fig. 4 is the detailed process flow chart according to the message processing method of the inventive method embodiment;
Fig. 5 is the block diagram according to the message process device of apparatus of the present invention embodiment.
Embodiment
Method embodiment
In the present embodiment, provide a kind of message processing method that is used for.But the identification information of the unmatched message of ring sign is made amendment on this method looped network, when the node on the message process looped network, earlier the identification information of message is judged, if meet predetermined stripping conditions, then directly message is peeled off from looped network.Below in conjunction with accompanying drawing this method is described.
As shown in Figure 3, message processing method according to the embodiment of the invention comprises: step S302, node judges whether its address is consistent with the destination address (DA) of the message of its reception, and whether the ring ID that carries in the node ring ID that judges its place ring and the message is consistent; Step S304, node carries out subsequent treatment according to judged result to message.
On the one hand, in step S302, under the situation of the ring ID unanimity of carrying in the ring ID of and node place consistent ring and the message, in step S304 with the DA of message in the address of node, node is peeled off message, and the reserved field of the message after will peeling off (res) is changed to 1;
On the other hand, in step S302, under the consistent situation of the ring ID that carries in the ring ID of and node place inconsistent ring and the message in the address of node with the DA of message, in step S304, node judges whether the value of the res of message is 1, and peel off message being judged as under the situation that is, otherwise the value of res is changed to 1 and E-Packet;
Again on the one hand, in step S302, under the inconsistent situation of ring ID of carrying in the ring ID of and node place consistent ring and the message with the DA of message in the address of node, in step S304, node subtracts the ttl value of message the new TTL that obtains after 1 as the TTL of message and E-Packet;
At last, in step S302, under the inconsistent situation of ring ID of carrying in the ring ID of inconsistent and node place ring and the message at the DA of address of node and message, in step S304, node E-Packets.
Below in conjunction with accompanying drawing above-mentioned processing is elaborated.
Fig. 4 shows the message processing method process chart in actual applications according to the inventive method embodiment.As shown in Figure 4, processing procedure is:
Step 404 continues to judge whether the entrained ring ID of message is consistent with the ring at actual place, thereby whether definite business through node is passed through Wrapping and switched, judged result execution in step 406 when being, otherwise execution in step 408;
Step 406 is peeled off data, and processing finishes;
Step 408 judges whether the value of res is 1, when judged result execution in step 406 when being, otherwise execution in step 410;
That is to say, in step 408, if business has been passed through Wrapping and has been switched, and DA unanimity, because whether be business (that is, can't by destination node normally be peeled off) or the normal Wrapping business of going around, so write 1 at the res bit if can't determine this business, so just shown that this frame has passed through this node, so normal Wrapping frame can normally be peeled off then through normal Wrapping circuit.Switch if detect professional process Wrapping, and the DA unanimity, RES is 1 simultaneously, can confirm that then this frame is the frame of going around, and execution in step 406 is peeled off at once.
Step 410, the res value is set to 1, and execution in step 416;
Step 412 judges whether the entrained ring ID of message is consistent with the ring at actual place, judged result execution in step 414 when being, otherwise execution in step 416;
Step 414 subtracts 1 with ttl value, and execution in step 416;
Step 416 is transmitted to next node with message, and, the processing shown in the next node execution graph 4 (beginning to re-execute) from step 402.
In above-mentioned processing, do not switch if business is passed through Wrapping, and DA is inconsistent, then by normal process, be that TTL subtracts 1, yet, in this case, there is a kind of exception, that is, this moment, ring was just switched at Wrapping, and professional residing node is Wrapping switching node (node 7 or a node 8), can determine also at this moment that this frame is free frame, the treating method of this moment is that this frame is changed to the frame that needs process Wrapping to switch.
As can be seen, in scene shown in Figure 2, optical fiber is disconnected suddenly fine between node 7 and the node 8, at this moment professional process Wrapping switches, the path change of process be node 9＞node 8＞node 9＞node 1＞node 2＞node 3＞node 4＞node 5 nodes 6＞node 7＞node 6, wherein, node 9 is walked ring net 1 to the business and the node 7 of node 8 to the business of node 6, and all the other all walk ring net 0.
By means of above-mentioned processing according to the present invention, just can separate make a decision fine to finish produced in the period that Wrapping switches should be through disconnected fine place go up the professional processing of ring; And according to above-mentioned processing of the present invention can also recover normal suddenly at disconnected fine place, Wrapping switches cancellation, business is returned under the situation in ring net 1 path, that finishes that disconnected fine place returns to the disconnected fine place of process that the Wrapping cancellation produced goes up the professional processing of ring, thereby solves the problem that both of these case produces frame down owing to bat around and can't descend ring.
Device embodiment
In the present embodiment, provide a kind of message process device that is used for.
As shown in Figure 5, comprise according to the message process device of the embodiment of the invention: first judge module 502, whether the address that is used for decision node is consistent with the DA of the message that node receives; Second judge module 504, whether the sign that is used for decision node place ring is consistent with the sign of the ring that message carries; Processing module 506 is used for according to the judged result of judge module message being carried out subsequent treatment.
Wherein, in the judged result of first judge module 502 is under the situation of the judged result of address of node and second judge module 504 consistent with the DA of the message ring ID unanimity of carrying in for the ring ID of node place ring and message, processing module 506 is peeled off message, and the reserved field of the message after will peeling off is changed to 1.
And, this device can further comprise: the 3rd judge module (not shown), the judged result that is used for judged result at first judge module 502 and is address of node and second judge module 504 inconsistent with the DA of message is under the consistent situation of the ring ID that the ring ID and the message of node place ring carries, whether the value of judging the res of message is 1, and peel off message by processing module 506 being judged as under the situation that is, otherwise the value of processing module 506 res is set to 1 and E-Packet.
And, in the judged result of first judge module 502 is under the inconsistent situation of ring ID of the ring that carries in for the ring ID of node place ring and message of the judged result of address of node and second judge module 504 consistent with the DA of message, and processing module 506 subtracts the value of the TTL of message the TTL that obtains after 1 as the new TTL of message and E-Packet.
In addition, in the judged result of first judge module 502 is that processing module 506 E-Packets under the inconsistent situation of ring ID of the ring that carries in for the ring ID of node place ring and message of the judged result of inconsistent and second judge module 504 of the DA of address of node and message.
In sum, the present invention by judge the entrained DA of message whether with through node consistent and entrained judge the ring ID unanimity whether ring ID encircles with the place, whether the destination that makes node can detect message is this node, and, the unmatched message of ring ID is carried out identification information to be revised, reached the purpose that makes node correctly peel off message, avoided message on looped network, infinitely to be transmitted (circulation), thereby RPR looped network resource has obtained effective utilization, has solved the problem of network resources waste.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a message processing method is characterized in that, comprising:
Node judges whether its address is consistent with the destination address of the message of its reception, and whether the sign of the ring that carries in the described node sign of judging its place ring and the described message is consistent;
Described node carries out subsequent treatment according to judged result to described message.
2. method according to claim 1, it is characterized in that, under the situation of the sign unanimity of the ring that carries in the sign of and described node place consistent ring and the described message in described address of node with the destination address of described message, described node is peeled off described message, and the reserved field of the described message after will peeling off is changed to 1.
3. method according to claim 1, it is characterized in that, under the consistent situation of the sign of the ring that in the sign of described address of node and the inconsistent and described node of the destination address of described message place ring and described message, carries, described node judges whether the reserved field of described message is 1, and peel off described message under the situation that is being judged as, otherwise described reserved field is changed to 1 and transmit described message.
4. method according to claim 1, it is characterized in that, under the inconsistent situation of sign of the ring that carries in the sign of and described node place consistent with the destination address of described message ring and the described message in described address of node, described node subtracts the life time length of described message the life time length that obtains after 1 as the new life time span of described message and transmit described message.
5. method according to claim 1, it is characterized in that, under the inconsistent situation of sign of the ring that carries in the sign of the inconsistent and described node of the destination address of described address of node and described message place ring and described message, described node is transmitted described message.
6. message process device is positioned at the node of Resilient Packet Ring, it is characterized in that, comprising:
First judge module is used to judge whether the destination address of the message that described address of node and described node receive is consistent;
Second judge module, whether the sign that is used for judging described node place ring is consistent with the sign of the ring that described message carries;
Processing module is used for according to the judged result of described judge module described message being carried out subsequent treatment.
7. device according to claim 6, it is characterized in that, in the judged result of described first judge module is that described address of node judged result consistent with the destination address of described message and described second judge module is under the situation of sign unanimity of the ring that carries in the sign of described node place ring and the described message, described processing module is peeled off described message, and the reserved field of the described message after will peeling off is changed to 1.
8. device according to claim 6 is characterized in that, further comprises:
The 3rd judge module, be used for judged result at described first judge module and be described address of node and the judged result of inconsistent and described second judge module of the destination address of described message and be under the consistent situation of the sign of the sign of described node place ring and the ring that described message carries, whether the reserved field of judging described message is 1, and peel off described message by described processing module being judged as under the situation that is, otherwise described processing module is changed to 1 and transmit described message with described reserved field.
9. device according to claim 6, it is characterized in that, in the judged result of described first judge module is that described address of node judged result consistent with the destination address of described message and described second judge module is under the inconsistent situation of sign of the ring that carries in the sign of described node place ring and the described message, and described processing module subtracts the life time length of described message the life time length that obtains after 1 as the new life time span of described message and transmit described message.
10. device according to claim 6, it is characterized in that, in the judged result of described first judge module is that the judged result of inconsistent and described second judge module of destination address of described address of node and described message is that described processing module is transmitted described message under the inconsistent situation of sign of the ring that carries in the sign of described node place ring and the described message.
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| CNA2008101377086A CN101321133A (en) | 2008-07-10 | 2008-07-10 | Method and apparatus for processing packet |
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| CNA2008101377086A CN101321133A (en) | 2008-07-10 | 2008-07-10 | Method and apparatus for processing packet |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065008A (en) * | 2010-12-16 | 2011-05-18 | 华为技术有限公司 | Data transmission method, radio remote unit, station and communication system |
| WO2014205819A1 (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | Link establishing method, node and apparatus |
| WO2016026418A1 (en) * | 2014-08-20 | 2016-02-25 | Hangzhou H3C Technologies Co., Ltd. | Packet forwarding in rpr network |
| CN105763409A (en) * | 2016-01-29 | 2016-07-13 | 杭州华三通信技术有限公司 | Flow forwarding method and device |
| CN107395523A (en) * | 2016-05-16 | 2017-11-24 | 智邦科技股份有限公司 | control method and network architecture |
| CN106789520B (en) * | 2016-12-26 | 2019-11-22 | 中核控制系统工程有限公司 | A kind of high speed failure safe multi-node communication networks |
| CN112448912A (en) * | 2019-08-27 | 2021-03-05 | 中兴通讯股份有限公司 | Method, device and storage medium for preventing message attack |
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2008
- 2008-07-10 CN CNA2008101377086A patent/CN101321133A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065008A (en) * | 2010-12-16 | 2011-05-18 | 华为技术有限公司 | Data transmission method, radio remote unit, station and communication system |
| WO2014205819A1 (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | Link establishing method, node and apparatus |
| WO2016026418A1 (en) * | 2014-08-20 | 2016-02-25 | Hangzhou H3C Technologies Co., Ltd. | Packet forwarding in rpr network |
| CN105471727A (en) * | 2014-08-20 | 2016-04-06 | 杭州华三通信技术有限公司 | Packet forwarding method and packet forwarding device in RPR (Resilient Packet Ring) network |
| US10484272B2 (en) | 2014-08-20 | 2019-11-19 | Hewlett Packard Enterprise Development Lp | Packet forwarding in RPR network |
| CN105763409A (en) * | 2016-01-29 | 2016-07-13 | 杭州华三通信技术有限公司 | Flow forwarding method and device |
| CN105763409B (en) * | 2016-01-29 | 2019-04-09 | 新华三技术有限公司 | A kind of flow forwarding method and device |
| CN107395523A (en) * | 2016-05-16 | 2017-11-24 | 智邦科技股份有限公司 | control method and network architecture |
| CN107395523B (en) * | 2016-05-16 | 2021-04-13 | 智邦科技股份有限公司 | Control method and network architecture |
| CN106789520B (en) * | 2016-12-26 | 2019-11-22 | 中核控制系统工程有限公司 | A kind of high speed failure safe multi-node communication networks |
| CN112448912A (en) * | 2019-08-27 | 2021-03-05 | 中兴通讯股份有限公司 | Method, device and storage medium for preventing message attack |
| CN112448912B (en) * | 2019-08-27 | 2023-08-01 | 中兴通讯股份有限公司 | Method, device and storage medium for preventing message attack |
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