CN102510353A - Expansion processing method under international telecommunication union telecommunication standardization sector (ITU-T) G.8032/Y.1344 multi-point fault - Google Patents
Expansion processing method under international telecommunication union telecommunication standardization sector (ITU-T) G.8032/Y.1344 multi-point fault Download PDFInfo
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Abstract
The invention discloses an expansion processing method under international telecommunication union telecommunication standardization sector (ITU-T) G.8032/Y.1344 multi-point fault. The method comprises the following steps of: defining a protocol expansion frame with a specific target address, and forwarding the protocol expansion frame to a port of a central processing unit (CPU) under the condition that a ring port is blocked; sending a protocol frame through a ring network node, sending an expansion frame and setting a forwarding hop initial value; after the ring network node receives the expansion frame, forwarding the expansion frame which is sent by other nodes through another ring port after forwarding hops in the expansion frame gradually increase or decrease, wherein the forwarding hops of the expansion frame do not exceed a forwarding hop threshold value; and processing the expansion frame according to a flow which is defined by a protocol. The method has the advantages that: on the premise that a protocol state machine is not changed and the convergence speed of a ring network is not influenced, the problem that a loop can be blocked after recovery of breaking points in ITU-T G.8032/Y.1344 is thoroughly solved; and the method is applicable to the occasions with a high reliability requirement for data communication in a severe industrial environment.
Description
Technical field
The present invention relates to the high reliability data communication means of Ethernet ring under a kind of harsh industrial environment; Particularly a kind of the solution behind the Ethernet ring multibreak under the recovery situation because of port block can not correctly be transmitted the G.8032/Y.1344 incorrect processing method of (03/2010) protocol status of ITU-T that data cause, belongs to data communication field.
Background technology
Data communication field under the harsh industrial environment (comprise in factory automation, intelligent transport system (ITS), transformer station and other adverse circumstances the deployment etc.) Ethernet ring that is widely used is connected industrial equipment (like remote-terminal unit RTU and PLC etc.), so that the redundancy protecting of data path to be provided.Ethernet ring under the common harsh industrial environment is the loop network that is linked to be by some EPA switches or router (hereinafter to be referred as switch); Its topological structure is as shown in Figure 1; S1 connects into a ring to S10 among the figure; S1 is each node on the ring to S10, and wherein S1 is a host node, and S2 is a transmission node to S10.
In the middle of numerous Ethernet ring agreements, ITU-T G.8032/Y.1344 (03/2010) provides well convergence property fast on the basis of open standard, and it adopts R-APS PDU pass-along message between each node.Under the default situations; R-APS PDU transmits (can make the fast as far as possible propagation of R-APS PDU like this) automatically by the exchange chip of node; Be dropped at port blocked (port is in the blocking state) and (see ITU-T G.8032/Y.1344 (03/2010) for details; 9.5 joint, R-APS channel blocking).Thus; Some the topology under (as multibreak situation occurring; Like Fig. 2, shown in 3), when R-APS PDU when port blocked is dropped, will cause R-APS PDU can not propagate into all nodes of Ethernet ring; Therefore there is the actual connection of loop, but the obstructed possibility of data communication.
Summary of the invention
In order to address the above problem; The invention provides the G.8032/Y.1344 extension processing method under the multiple spot fault of a kind of ITU-T; Solved the problem that R-APS PDU can not correctly transmit at port blocked under situation about recovering behind the Ethernet ring multibreak; When making full use of the ITU-T fast convergence that G.8032/Y.1344 (03/2010) agreement is brought; Also make the data communication under the harsh industrial environment become reliably, simultaneously to ITU-T G.8032/Y.1344 (03/2010) protocol state machine etc. need not any change.
The technical scheme that the present invention adopted is:
A kind of ITU-T is the extension processing method under the multiple spot fault G.8032/Y.1344, and its main contents are:
The frame that definition has the specific objective address is as the protocol extension frame;
After node is set receives said protocol extension frame, do not receive the restriction of port blocking, said protocol extension frame is delivered to the cpu port of node;
When doing Tx R-APS operation, the said protocol extension frame of synchronized transmission;
If what node was received is the standard agreement frame; This standard agreement frame of flow processing according to protocol definition; If what receive is the protocol extension frame; That non-node sent and transmit jumping figure and be no more than the protocol extension frame of transmitting the jumping figure threshold value and transmit through another central port, and according to this protocol extension frame of flow processing of protocol definition.
The concrete treatment step of node after receiving frame is following:
(1) judges that this frame is standard agreement frame or protocol extension frame, if the standard agreement frame, then according to ITU-T this frame of flow processing of protocol definition G.8032/Y.1344, if the protocol extension frame carries out step (2);
(2) judge whether said protocol extension frame is that this node sends, if, then abandon this protocol extension frame, if not, then carry out step (3);
(3) detect this node and whether have the another one central port; If have the another one central port and transmit jumping figure and be no more than forwarding jumping figure threshold value; Then transmit said protocol extension frame in this central port; If do not have the another one central port or transmit jumping figure and surpass to transmit the jumping figure threshold value, then do not transmit, and according to the ITU-T said protocol extension frame of flow processing of protocol definition G.8032/Y.1344.
Said protocol extension frame is provided with the forwarding hop count field; In said step (3); There is the another one central port if judge; The judgement of then transmitting jumping figure is to determine whether forwarding, and specifically: same preset forwarding jumping figure threshold value compares behind the value increasing or decreasing with the forwarding hop count field in the said protocol extension frame, if be no more than said preset forwarding jumping figure threshold value; Then upgrade the forwarding hop count field in the said protocol extension frame with the value behind the forwarding jumping figure increasing or decreasing; Transmit amended protocol extension frame in said another one central port, if surpass said preset forwarding jumping figure threshold value, then according to the ITU-T said protocol extension frame of flow processing of protocol definition G.8032/Y.1344.
When the said protocol extension frame of synchronized transmission, node is with certain specific value that is initialized as of the forwarding hop count field of said protocol extension frame.
Said preset forwarding jumping figure threshold value can be provided with as required, and for example 254.
For above-mentioned any one described ITU-T extension processing method under the multiple spot fault G.8032/Y.1344, the frame structure of said protocol extension frame is set at:
| Destination address | Source address | Protocol type | R-APS PDU | Transmit jumping figure | Padding |
Destination address: the address of the equipment of expression transmit frame, account for 6 bytes, its value is said specific objective address;
Source address: the address of the equipment of expression received frame, account for 6 bytes, its value is the unicast mac address of node;
Protocol type: account for 2 bytes;
R-APS PDU:ITU-T is the R-APS data of (03/2010) definition G.8032/Y.1344;
Transmit jumping figure: account for 1 byte, initial value is made as certain particular value, is used for the counting of hop count;
Padding: the filling when 60 bytes of frame length less than is used for frame length is filled to 60 bytes.
Beneficial effect of the present invention:
Utilize self-defining protocol extension frame and be directed against the specific setting of this protocol extension frame at node; Realized that the software of protocol extension frame transmits and its combination with the hardware forwarding of standard agreement frame, avoided R-APS PDU port blocked abandoned automatically and cause can not be between link point the problem of correct transmission.
Owing in the protocol extension frame, be provided with the forwarding hop count field, and by its tally function, through the max-forwards number of times of control protocol expansion frame in ring, the generation of effectively having avoided transmitting storm is improved the reliability of this processing method and practicality.
Adopt technical scheme of the present invention; On the quick convergence property basis that makes full use of existing open standard; Thoroughly solved the obstructed problem of loop because of recovering behind the breakpoint to cause; Effectively improve reliability of data communication under the harsh industrial environment, and to G.8032/Y.1344 no any change such as (03/2010) protocol state machine of ITU-T.
Description of drawings
Fig. 1 is the basic topological structure sketch map of Ethernet ring;
Fig. 2 is a kind of topological structure sketch map when having two breakpoints on the Ethernet ring;
Fig. 3 physically is communicated with but obstructed in logic topological structure sketch map for two breakpoints among Fig. 2;
Fig. 4 is a R-APS PDU process chart.
Embodiment
Below in conjunction with Fig. 4 the G.8032/Y.1344 detailed process of the extension processing method under the multiple spot fault of ITU-T provided by the present invention is described:
1, definition frame that the specific objective address arranged is as the ITU-T protocol extension frame of agreement G.8032/Y.1344;
The frame structure of said protocol extension frame is set at:
| Destination address | Source address | Protocol type | R-APS PDU | Transmit jumping figure | Padding |
Destination address: the address of node of expression transmit frame, account for 6 bytes, its value is said specific objective address, in the present embodiment, the destination address of said protocol extension frame is made as the clean culture fixed address;
Source address: the address of the equipment of expression received frame, account for 6 bytes, its value is the node unicast mac address;
Protocol type: account for 2 bytes, its value is fixed as certain specific value, for example 0x8902.
R-APS PDU:ITU-T is the R-APS data of (03/2010) definition G.8032/Y.1344, and its form can be referring to ITU-T G.8032/Y.1344 (03/2010), 10.3 joints, R-APS format;
Transmit jumping figure: account for 1 byte, be used for the counting of hop count;
Padding: the filling when 60 bytes of protocol extension frame length less than is used for frame length is filled to 60 bytes.
2, the cpu port that can not receive the restriction of port blocking when node is received said protocol extension frame and can said protocol extension frame be delivered to node is set; Can not abandon this frame even receive the port of the node of this frame like this for blocking (blocking) state yet; But this frame is forwarded to cpu port (needing hardware supports, like manageable L2/L3 exchange chip).
(be ITU-T G.8032/Y.1344 (03/2010) when 3, sending normal protocol frame; 10.1.3 joint; When the Tx R-APS of R-APS message transmission definition operates), the said protocol extension frame of synchronized transmission, and the initial value of transmitting hop count field is set; For example, the initial value that said forwarding hop count field is set is 1.What be worth explanation is that it is in order hop count to be counted and to be limited, in theory, not limiting the initial value and the threshold value of said jumping figure that hop count field is set.
4, node is specifically carried out following steps according to flow process shown in Figure 4 and is realized the processing to said protocol extension frame after receiving frame:
(1) judges that this frame is a standard agreement frame or protocol expansion frame, if the standard agreement frame, then according to ITU-T this frame of flow processing of protocol definition G.8032/Y.1344, if the protocol extension frame carries out step (2);
(2) judge whether said protocol extension frame is that this node sends, if, then abandon this protocol extension frame, if not, then carry out step (3);
(3) detect this node and whether have the another one central port,, then do not transmit, and,, then carry out step (4) if exist according to the ITU-T said protocol extension frame of flow processing of protocol definition G.8032/Y.1344 if do not exist;
(4) value of the forwarding hop count field in the said protocol extension frame being added the same preset forwarding jumping figure threshold value in 1 back compares; If be no more than said preset forwarding jumping figure threshold value; The value that then adds after 1 with the forwarding jumping figure is upgraded the forwarding hop count field in the said protocol extension frame; Transmit amended protocol extension frame in aforesaid another one central port; If surpass said preset forwarding jumping figure threshold value, then according to the ITU-T said protocol extension frame of flow processing of protocol definition G.8032/Y.1344.
Said forwarding jumping figure threshold value is set; And the value of the hop count field in the said protocol extension frame is added 1 back is that hop count with the protocol extension frame is limited in the limited number of times with said forwarding jumping figure threshold ratio purpose; Therefore said in theory forwarding jumping figure threshold value can be a constant; In the present embodiment, said forwarding jumping figure threshold setting is 254.When the value of the forwarding hop count field in setting said protocol extension frame is successively decreased, then correspondingly the initial value of said forwarding hop count field is made as a higher value, and said forwarding jumping figure threshold value is made as a smaller value.
G.8032/Y.1344, the said node that ITU-T of the present invention relates in the extension processing method under the multiple spot fault comprises EPA switch and/or router.
With Fig. 3 is example; Before adopting this method; The R-APS PDU that Owner node sends will be lost at the Port 3 of the Port 2 of node S4 (blocking) and node S8 (blocking); Cause R-APS PDU correctly not to be transmitted to node S4, S5, S6, S7 and S8, thereby cause the communication of whole ring to interrupt.After adopting this method; R-APS PDU can break through the restriction of port blocked; Normally be forwarded, and, improved reliability of data communication under the harsh industrial environment significantly simultaneously to G.8032/Y.1344 no any change such as (03/2010) protocol state machine of ITU-T.Because G.8032/Y.1344 in (03/2010) agreement, R-APS PDU repeatedly repeats to send ITU-T, so transmit of the resume speed not influence of expansion frame to ring.
Need to prove that the present invention is suitable equally for single-break and multibreak situation.
Claims (10)
1. the ITU-T extension processing method under the multiple spot fault G.8032/Y.1344 is characterized in that:
The frame that definition has the specific objective address is as the protocol extension frame;
After node is set receives said protocol extension frame, do not receive the restriction of port blocking, said protocol extension frame is delivered to the cpu port of node;
When doing Tx R-APS operation, the said protocol extension frame of synchronized transmission;
If what node was received is the standard agreement frame; This standard agreement frame of flow processing according to protocol definition; If what receive is the protocol extension frame; That non-node sent and transmit jumping figure and be no more than the protocol extension frame of transmitting the jumping figure threshold value and transmit through another central port, and according to this protocol extension frame of flow processing of protocol definition.
2. ITU-T according to claim 1 is the extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that the concrete treatment step of node after receiving frame is:
Judge that this frame is standard agreement frame or protocol extension frame, if the standard agreement frame, then according to ITU-T this frame of flow processing of protocol definition G.8032/Y.1344, if the protocol extension frame carries out step (2);
Judge whether said protocol extension frame is that this node sends, if, then abandon this protocol extension frame, if not, then carry out step (3);
Detect this node and whether have the another one central port; If have the another one central port and transmit jumping figure and be no more than forwarding jumping figure threshold value; Then transmit said protocol extension frame in this central port; If do not have the another one central port or transmit jumping figure and surpass to transmit the jumping figure threshold value, then do not transmit, and according to the ITU-T said protocol extension frame of flow processing of protocol definition G.8032/Y.1344.
3. ITU-T according to claim 2 is the extension processing method under the multiple spot fault G.8032/Y.1344; It is characterized in that said protocol extension frame is provided with the forwarding hop count field; In said step (3); There is the another one central port if judge; The judgement of then transmitting jumping figure is to determine whether forwarding, and specifically: same preset forwarding jumping figure threshold value compares behind the value increasing or decreasing with the forwarding hop count field in the said protocol extension frame, if be no more than said preset forwarding jumping figure threshold value; Then upgrade the forwarding hop count field in the said protocol extension frame with the value behind the forwarding jumping figure increasing or decreasing; Transmit amended protocol extension frame in said another one central port, if surpass said preset forwarding jumping figure threshold value, then according to the ITU-T said protocol extension frame of flow processing of protocol definition G.8032/Y.1344.
4. ITU-T according to claim 3 is the extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that when the said protocol extension frame of synchronized transmission, and be certain specific value with the value initialization of the forwarding hop count field of said protocol extension frame.
5. ITU-T according to claim 4 is the extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that said preset forwarding jumping figure threshold value.
6. ITU-T according to claim 5 is the extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that the destination address of said protocol extension frame is made as the clean culture fixed address.
7. ITU-T according to claim 6 is the extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that the destination address of said protocol extension frame is made as reserved address.
8. according to claim 1,2,3,4,5, the 6 or 7 described ITU-T extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that the frame structure of said protocol extension frame is:
Destination address: the address of the equipment of expression transmit frame, account for 6 bytes, its value is said specific objective address;
Source address: the address of the equipment of expression received frame, account for 6 bytes, its value is the node unicast mac address;
Protocol type: account for 2 bytes;
R-APS PDU:ITU-T is the R-APS data of (03/2010) definition G.8032/Y.1344;
Transmit jumping figure: account for 1 byte, initial value is made as certain specific value, is used for the counting of hop count;
Padding: the filling when 60 bytes of frame length less than is used for frame length is filled to 60 bytes.
9. ITU-T according to claim 8 is the extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that the value of said protocol type field is fixed as certain specific value.
10. ITU-T according to claim 9 is the extension processing method under the multiple spot fault G.8032/Y.1344, it is characterized in that said node comprises EPA switch and/or router.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184678A (en) * | 2013-05-28 | 2014-12-03 | 上海博达数据通信有限公司 | Method for dropping frame duplicates to achieve highly-reliable seamless redundancy ring network |
| CN106953779A (en) * | 2017-03-06 | 2017-07-14 | 南方电网科学研究院有限责任公司 | Redundant looped network node monitors method and system |
| CN107317762A (en) * | 2017-06-29 | 2017-11-03 | 北京东土军悦科技有限公司 | Jamming control method and field layer device based on industry internet field layer device |
| CN112491889A (en) * | 2020-11-27 | 2021-03-12 | 中国人民解放军战略支援部队信息工程大学 | Software and hardware cooperative programmable forwarding system, method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100284413A1 (en) * | 2009-05-11 | 2010-11-11 | Nortel Networks Limited | Dual homed e-spring protection for network domain interworking |
| CN102035710A (en) * | 2009-09-24 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for updating blocked port information |
-
2011
- 2011-12-26 CN CN201110440727.8A patent/CN102510353B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100284413A1 (en) * | 2009-05-11 | 2010-11-11 | Nortel Networks Limited | Dual homed e-spring protection for network domain interworking |
| CN102035710A (en) * | 2009-09-24 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for updating blocked port information |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184678A (en) * | 2013-05-28 | 2014-12-03 | 上海博达数据通信有限公司 | Method for dropping frame duplicates to achieve highly-reliable seamless redundancy ring network |
| CN106953779A (en) * | 2017-03-06 | 2017-07-14 | 南方电网科学研究院有限责任公司 | Redundant looped network node monitors method and system |
| CN106953779B (en) * | 2017-03-06 | 2019-01-15 | 南方电网科学研究院有限责任公司 | Redundant looped network node monitoring method and system |
| CN107317762A (en) * | 2017-06-29 | 2017-11-03 | 北京东土军悦科技有限公司 | Jamming control method and field layer device based on industry internet field layer device |
| CN112491889A (en) * | 2020-11-27 | 2021-03-12 | 中国人民解放军战略支援部队信息工程大学 | Software and hardware cooperative programmable forwarding system, method and device |
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