CN101621416B - Method and device for determining protection type - Google Patents
Method and device for determining protection type Download PDFInfo
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- CN101621416B CN101621416B CN2009101640396A CN200910164039A CN101621416B CN 101621416 B CN101621416 B CN 101621416B CN 2009101640396 A CN2009101640396 A CN 2009101640396A CN 200910164039 A CN200910164039 A CN 200910164039A CN 101621416 B CN101621416 B CN 101621416B
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Abstract
The invention discloses a method and a device for determining a protection type. The method comprises the following steps: as for each converging point node of a switched path, acquiring a route ID address of an last hop node from a message transmitted from the switched path on the converging point node; comparing the route ID address with a route ID address of the last hop node of the converging point node of a predetermined main path, judging if the route ID address is the same as the route ID address of the last hop node of the converging point node of the predetermined main path or not, if the route ID address is the same as the route ID address of the last hop node of the converging point node of the predetermined main path, determining the protection type to be link protection on the converging point node, and if the route ID address is different from the route ID address of the last hop node of the converging point node of the predetermined main path, determining the protection type to be node protection on the converging point node. The technique scheme can prevent the protection from being failed under the condition that the link protection is triggered when the link protection and the node protection simultaneously exist and MP nodes are overlapped.
Description
Technical field
The present invention relates to network communication field, in particular to a kind of definite method and device of protecting type.
Background technology
The quick heavy-route of traffic engineering (Traffic Engineering-Fast Re-Route abbreviates TE-FRR as) technology is that a kind of Where topical link or node failure carry out the local local resist technology of repairing.Two kinds of local protection types of link protection and Node Protection in RFC4090, have been defined; Two kinds of special node types in forming the protection process have also been defined simultaneously: local point (the Point Local Repair that repairs; Abbreviate PLR as) node and convergent point (MergePoint abbreviates MP as) node.
Fig. 1 is the Node Protection topological diagram of TE-FRR.As shown in Figure 1, this topological diagram comprises: node R 1, R2, R3 (R1 is as the PLR node, and R3 is as the MP node), and link: L12, L23, L13 wherein, when link L12 lost efficacy, switches to L13 with the path, forms Node Protection.
Fig. 2 is the link protection topological diagram of TE-FRR.As shown in Figure 2, this topological diagram comprises: node R 1, R2, R3 (R2 is as the PLR node, and R3 is as the MP node), and link: L12, L23, L32 wherein, when link L23 lost efficacy, switches to L32 with the path, forms link protection.After the switching, the protocol massages that send at the upper reaches such as the path that send from the backup tunnel incoming interface in the MP node processing, path-tear is not handled for the protocol massages in former tunnel.
, engineering has so a kind of situation in disposing, can be referring to Fig. 3, and Fig. 3 exists for TE-FRR Node Protection and link protection simultaneously, and the topological diagram of MP coincidence.As shown in Figure 3, this topological diagram comprises: node R 1, R2, R3 (R1, R2 are as the PLR node, and R3 is as the MP node); Link: L12, L23, L13, L32; Wherein, there are two backup tunnels (path) to protect main tunnel, form link protection and Node Protection and MP node respectively and overlap.Specific as follows: lost efficacy when R1 detects link L12, Backuplsp1 forms Node Protection to main tunnel, and and then R2 has also detected link L23 inefficacy, and Backup lsp2 becomes link protection to main tunnel-shaped.
On MP node R 3, how to distinguish that to switch the protection come be that link protection or Node Protection are most important.If because do not distinguish; With the object of back link protection of switching as the MP node processing, so, the RESV message destination that upstream so is sent is the fei2/2 of R2; R1 does not receive RESV message; Can send path-tear downstream along Backlsp1, though this path-tear message can be by the MP node processing, because at this moment the MP node is only handled the protocol massages that fei3/3 comes.But because link L12 lost efficacy, the PSB among the R2 can not get refreshing, can be aging after a period of time and send path-tear along backup tunnel Backlsp2, and R3 still can handle the path-tear message that receives from fei3/3 main tunnel is removed.
Can draw, when Node Protection and link protection exist simultaneously, and the MP node overlaps, and triggers after the link protection to cause the protection failure.
Therefore, on the MP node, how distinguishing what switch that the PATH message of coming forms is Node Protection or link protection, in existing internet engineering task group (InternetEngineering Task Force abbreviates IETF as), does not also have solution.
Summary of the invention
To on the MP node, how distinguishing what switch that the PATH message of coming forms in the correlation technique is Node Protection or link protection; In existing internet engineering task group, also do not have the problem of solution and propose the present invention; For this reason; Main purpose of the present invention is to provide a kind of definite method and device of improved protection type, one of to address the above problem at least.
According to an aspect of the present invention, a kind of definite method of protecting type is provided.
Be used for because link or node failure carry out confirming when switch in the path protection type switched according to definite method of protection type of the present invention; It is characterized in that; For each the convergent point node on the path after switching; This method comprises: on this convergent point node, and the route ID address that obtains a last hop node the message that transmit in the path after switching; The route ID address of the last hop node of convergent point node in route ID address and the preset main path is compared; Judge whether identical, if confirm on the convergent point node that then the protection type is link protection; Otherwise, confirm that on the convergent point node protection type is a Node Protection.
According to a further aspect in the invention, a kind of definite device of protecting type is provided.
According to definite device of protection type of the present invention, be used for it is characterized in that in the protection type of carrying out owing to link or node failure confirming when switch in the path switching; For each the convergent point node on the path after switching; This device comprises: acquiring unit, judging unit and definite unit, wherein, acquiring unit; Be used at this convergent point node the route ID address that obtains a last hop node the message that transmit in the path after switching; Judging unit is used for the route ID address of route ID address with a last hop node of the main path convergent point node of presetting compared, and judges whether identical; Confirm the unit, being used in judging unit output result is under the situation that is, confirms that on the convergent point node protection type is link protection, and the result is under the situation not in judging unit output, confirms that on the convergent point node protection type is a Node Protection.
Through the present invention; For each the convergent point node on the path after switching, on this convergent point node, the route ID address that obtains a last hop node the message that transmit in the path after switching; The route ID address of the last hop node of convergent point node in this route ID address and the preset main path compared confirm to protect type; Having solved and on the MP node, how having distinguished what switch that the PATH message of coming forms in the correlation technique is Node Protection or link protection, in existing internet engineering task group, does not also have the problem of solution, has proposed a kind of definite scheme of protecting type; Can make in link protection and Node Protection and exist simultaneously; And the MP node overlaps, and under situation about triggering after the link protection, avoids the protection failure.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
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 the Node Protection topological diagram of TE-FRR;
Fig. 2 is the link protection topological diagram of TE-FRR;
Fig. 3 exists for TE-FRR Node Protection and link protection simultaneously, and the topological diagram of MP coincidence;
Fig. 4 is the flow chart according to definite method of the protection type of the embodiment of the invention;
Fig. 5 is the detail flowchart of definite method of protection type when the MP node overlaps according to the preferred embodiment of the invention;
Fig. 6 is the structured flowchart according to definite device of the protection type of the embodiment of the invention;
Fig. 7 is for protect the structured flowchart of definite device of type according to the preferred embodiment of the invention.
Embodiment
Functional overview
Consider that on the MP node, how distinguishing what switch that the PATH message of coming forms in the correlation technique is Node Protection or link protection; The problem that in existing internet engineering task group, does not also have solution; The embodiment of the invention provides a kind of definite scheme of protecting type, in tunnel state piece PSB, increases route ID (RouterID) address that a field is used for writing down a jumping.This RouterID address can obtain through the RSVP HOP object indirect in the path message.When the MP node receives the PATH message of switching, the RouterID that relatively writes down among the PSB1 of the correspondence in this PATH message is identical with the RouterID of main tunnel PSB, if identical, this switching protection of coming is link protection so.If inequality, the protection of this switching is a Node Protection so.
Because RSVP_HOP is used to write down the outgoing interface address of a jumping to liking the object that must carry in the PATH message.The node R outerID address that obtains this through this address is effective.If it is identical with RouterID address among the main PSB that the RouterID address jumped in last one of the PSB of the correspondence in the PATH message that switching is come record, from the characteristic of link protection, what switching was come so is exactly link protection.If these two RouterID are inequality, are exactly Node Protection, because the protection of TE-FRR has only above-mentioned two kinds of forms at present, got rid of link protection, then be Node Protection.
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Method embodiment
According to the embodiment of the invention, a kind of definite method of protecting type is provided at first.
Fig. 4 is the flow chart according to definite method of the protection type of the embodiment of the invention.As shown in Figure 4, comprise following processing (step S401-step S403) according to definite method of the protection type of the embodiment of the invention:
At first, receive the first switching message (for example, PATH message) of a last hop node that comes from present node in the preset main path, wherein, first switches message is used to indicate current path to switch, and creates tunnel state piece PSB afterwards.
Step S401: for each the convergent point node on the path after switching, on this convergent point node, the route ID address that obtains a last hop node the message that transmit in the path after switching;
Preferably, the route ID address that obtains a last hop node the message that transmit in the path after switching can be in the following manner: according to the outgoing interface address of carrying in the message, obtain the route ID address of a last hop node of its correspondence.
Preferably, above-mentioned route ID address is stored in the tunnel state piece (Path State Block abbreviates PSB as).
In the practical implementation process, can in the tunnel state piece, increase the route ID address of a field with a jumping on the record, this route ID address can obtain through the RSVP_HOP object indirect in the path message.Since RSVP_HOP to as if PATH message in the object that must carry, be used to write down the outgoing interface address (for example, fei1/1 address shown in Figure 3, fei1/2 address etc.) of a jumping.Therefore it is effective obtaining this node R outerID address through this address.
Step S403: the route ID address of the last hop node of convergent point node in route ID address and the preset main path is compared; Judge whether identical; If; Confirm on the convergent point node that then the protection type is link protection, otherwise, confirm that on the convergent point node protection type is a Node Protection.
Preferably, after definite protection type is link protection on the convergent point node, can also comprise following processing:
(1) reception comes from the second switching message of a last hop node of convergent point node in the preset main path, and wherein, second switches message is used to indicate current path to switch;
(2) create new tunnel state piece (PSB);
(3) according to the tunnel state piece of creating before the new tunnel state piece coupling;
(4) confirm that according to the tunnel state piece of creating before the protection type is link protection;
(5) the tunnel state piece of creating before the deletion.
Preferably, after definite protection type is Node Protection on the convergent point node, can also comprise following processing:
(1) reception comes from the 3rd switching message of a last hop node of convergent point node in the preset main path, and wherein, the 3rd switches message is used to indicate current path to switch;
(2) create new tunnel state piece;
(3) according to the tunnel state piece of creating before the new tunnel state piece coupling;
(4) confirm that according to the tunnel state piece of creating before the protection type is a Node Protection;
(5) the new tunnel state piece of deletion.
Pass through the foregoing description; A kind of definite method of protecting type is provided; Having solved and on the MP node, how having distinguished what switch that the PATH message of coming forms in the correlation technique is Node Protection or link protection, in existing internet engineering task group, does not also have the problem of solution, thereby can make at Node Protection with link protection exists simultaneously and during the coincidence of MP node; Under the situation about triggering after the link protection, avoid the protection failure.
Fig. 5 is the detail flowchart of definite method of protection type when the MP node overlaps according to the preferred embodiment of the invention.As shown in Figure 5, definite method of protection type comprised following processing (step S501-step S517) when the MP node overlapped according to the preferred embodiment of the invention:
Step S501: on certain MP node, receive and switch the PATH message of coming;
Step S503: create new PSB, this PSB is recorded as PSB ';
Step S505: whether the main PSB that judges this MP node has protection;
Step S507: the route ID address of judging the middle record of PSB ' whether with main PSB in route ID address identical;
Step S509: writing down the current protection of main PSB is link protection;
Step S511: writing down the current protection of main PSB is Node Protection;
Step S513: the protection relation of judging PSB ' that current switching comes and main PSB;
Step S515: confirm that according to the tunnel state piece of creating before the protection type is link protection, and current protection type is a Node Protection, deletes original PSB ', with the PSB ' of current PSB ' as main tunnel-associated;
Step S517: confirm that according to the tunnel state piece of creating before the protection type is a Node Protection, and current protection type is link protection, deletes current PSB ', with the PSB ' of original PSB ' as main tunnel-associated.
Integrating step S501-step S509, step S513 and step S515, and combine Fig. 3 can be described in detail through following instance: if link L23 than the first down of link L12 (inefficacy), handling process is following:
(1) as the down of link L23 elder generation; R3 receives the path message after the switching of main tunnel on the node R 2, because switch back SENDER_TEMPLATE change has taken place, so mate less than PSB at R3; Can create a PSB again; Here we are labeled as PSB ' to this PSB, and PSB ' can arrive the PSB in main tunnel through tunnel five-tuple information matches, and judge that with the relation of PSB current protection is link protection according to current PSB '.
(2) link L12 down and then, R3 receive the path message after main tunnel switches on the node R 1, can create a new PSB equally; Equally, we remember that this PSB is PSB ', and this PSB ' also matches main PSB; Find that main PSB has had protection, and find that current protection is link protection, the PSB ' that link protection is created before the deletion; The PSB ' of current establishment is formed the protection relation with main PSB, and the change protected mode is a Node Protection.
(3) can not get refreshing owing to R2 master tunnel; The aging path-tear that sends of PSB status block, R3 receives the path-tear that sends from interface fei3/3 from R2, at this moment searches the corresponding RouterID of hop object in the path-tear message; Search the PSB that matches; Be checked through last one of the related middle record of PSB ' of current PSB and jump RouterID, find that these two RouterID are inconsistent, ignore this path-tear message.
Integrating step S501-step S507, step S511, step S513 and step S517, and combine Fig. 3, can be described in detail through following instance: the down (inefficacy) of link L12 elder generation, follow link L23down, handling process is following:
(1) as the down of link L12 elder generation; R3 receives the path message after the switching of main tunnel on the node R 1, because switch back SENDER_TEMPLATE change has taken place, so mate less than PSB at R3; Can create a PSB again; Here we are labeled as PSB ' to this PSB, and PSB ' can arrive the PSB in main tunnel through tunnel five-tuple information matches, and judge that with the relation of PSB current protection is a Node Protection according to current PSB '.
(2) link L23 down and then, R3 receive the path message after main tunnel switches on the node R 2, can create a new PSB equally; Equally; We remember that this PSB is PSB ', and this PSB ' also matches main PSB, find that main PSB has had protection; And at this moment this protection just deletes the PSB ' of current establishment for Node Protection.
(3) can not get refreshing owing to R2 master tunnel; The aging path-tear that sends of PSB status block, R3 receives the path-tear that sends from interface fei3/3 from R2, at this moment searches the corresponding RouterID of hop object in the path-tear message; Search the PSB that matches; Be checked through last one of the related middle record of PSB ' of current PSB and jump RouterID, find that these two RouterID are inconsistent, then ignore this path-tear message.
Device embodiment
According to the embodiment of the invention, a kind of definite device of protecting type is provided also.
Fig. 6 is the structured flowchart according to definite device of the protection type of the embodiment of the invention.Fig. 7 is for protect the structured flowchart of definite device of type according to the preferred embodiment of the invention.As shown in Figure 6, comprise according to definite device of the protection type of the embodiment of the invention: acquiring unit 1, judging unit 2, confirm unit 3, describe below in conjunction with Fig. 7.
Wherein, acquiring unit 1 is used at the convergent point node, the route ID address that obtains a last hop node the message that transmit in the path after switching;
Preferably, acquiring unit 1 is used for the outgoing interface address of carrying according to message, obtains the route ID address of its corresponding last hop node.
Preferably, as shown in Figure 7, said apparatus also comprises: receiving element 4 and establishment unit 5; Wherein, receiving element 4 is used for receiving first of the last hop node that comes from preset main path present node and switches message; Wherein, the first switching message is used to indicate current path to switch; Create unit 5, be connected, be used to create the tunnel state piece with receiving element 4.
Preferably, tunnel state piece PSB is used to store route ID address.
Preferably, receiving element 4 also is used for receiving the second or the 3rd of the last hop node that comes from preset main path convergent point node and switches message, and wherein, second switches message and the 3rd switches message and be used to indicate current path to switch.
Preferably, create unit 5, also be used for switching message or the 3rd and switch the new tunnel state piece of message establishing according to second.
Judging unit 2 is connected with acquiring unit 1, is used for the route ID address of route ID address with a last hop node of the main path convergent point node of presetting compared, and judges whether identical;
Preferably, above-mentioned definite unit 3 also is used for confirming that according to the tunnel state piece of creating before the protection type is link protection or Node Protection;
Preferably, as shown in Figure 7, this device can also comprise: matching unit 6, processing unit 7.Wherein, matching unit 6 is connected with definite unit 3 with establishment unit 5 respectively, is used for the tunnel state piece of creating according to before the new tunnel state piece coupling; Processing unit 7 is connected with definite unit 6, is used for confirming that in definite unit 6 the protection type is under the situation of link protection; The tunnel state piece of creating before the deletion; Perhaps, confirm that in definite unit the protection type is under the situation of Node Protection, delete new tunnel state piece.
Pass through the foregoing description; A kind of definite device of protecting type is provided, in conjunction with the interaction of acquiring unit, judging unit and definite unit, can at Node Protection and link protection exists simultaneously and MP node when overlapping; Under situation about triggering after the link protection, avoid the protection failure.
In sum, through the above embodiment of the present invention, definite scheme of the protection type that provides; Can solve and on the MP node, how distinguish what switch that the PATH message of coming forms in the correlation technique is Node Protection or link protection; Thereby can when implementing the coincidence of Node Protection and link protection and MP node, confirm Node Protection or link protection, and adopt corresponding the processing; So that under situation about triggering after the link protection, avoided the protection failure.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. definite method of protecting type is used for it is characterized in that in the protection type of carrying out owing to link or node failure confirming when switch in the path switching for each the convergent point node on the path after switching, said method comprises:
On this convergent point node, the route ID address that obtains a last hop node the message that transmit in the path after switching;
The route ID address of said route ID address with a last hop node of convergent point node described in the main path of presetting compared; Judge whether identical; If; Confirm on said convergent point node that then the protection type is link protection, otherwise, confirm that on said convergent point node said protection type is a Node Protection;
Wherein, Obtain the message that transmit in path after switching before the route ID address of a last hop node; Said method also comprises: the first switching message that receives a last hop node that comes from convergent point node described in the preset main path; Wherein, the said first switching message is used to indicate current path to switch; Create the tunnel state piece.
2. method according to claim 1 is characterized in that, the route ID address that obtains a last hop node the message that transmit in said path after switching comprises:
According to the outgoing interface address of carrying in the said message, obtain the route ID address of its corresponding last hop node.
3. method according to claim 1 is characterized in that,
Said route ID address is stored in the said tunnel state piece.
4. method according to claim 3 is characterized in that, after definite protection type was link protection on said convergent point node, said method also comprised:
Reception comes from the second switching message of a last hop node of convergent point node described in the preset main path, and wherein, said second switches message is used to indicate current path to switch;
Create new tunnel state piece;
Mate the tunnel state piece of creating before according to said new tunnel state piece;
Confirm that according to the tunnel state piece of creating before the protection type is link protection;
The said tunnel state piece of creating before the deletion.
5. method according to claim 3 is characterized in that, after definite said protection type was Node Protection on said convergent point node, said method also comprised:
Reception comes from the 3rd switching message of a last hop node of convergent point node described in the preset main path, and wherein, the said the 3rd switches message is used to indicate current path to switch;
Create new tunnel state piece;
Mate the tunnel state piece of creating before according to said new tunnel state piece;
Confirm that according to the tunnel state piece of creating before the protection type is a Node Protection;
Delete said new tunnel state piece.
6. definite device of protecting type is used for it is characterized in that in the protection type of carrying out owing to link or node failure confirming when switch in the path switching for each the convergent point node on the path after switching, said device comprises:
Receiving element is used for receiving first of the last hop node that comes from preset main path present node and switches message, and wherein, said first switches message is used to indicate current path to switch;
Create the unit, be used to create the tunnel state piece;
Acquiring unit is used at this convergent point node, the route ID address that obtains a last hop node the message that transmit in the path after switching;
Judging unit is used for the route ID address of said route ID address with a last hop node of convergent point node described in the main path of presetting compared, and judges whether identical;
Confirm the unit; Being used in said judging unit output result is under the situation that is; Confirming that on said convergent point node the protection type is link protection, is under the situation not in said judging unit output result, confirms that on said convergent point node the protection type is a Node Protection.
7. device according to claim 6 is characterized in that,
Said acquiring unit is used for the outgoing interface address of carrying according to said message, obtains the route ID address of its corresponding last hop node.
8. device according to claim 6 is characterized in that,
Said tunnel state piece PSB is used to store said route ID address.
9. device according to claim 8 is characterized in that,
Said receiving element also is used to receive the second or the 3rd of the last hop node that comes from convergent point node described in the preset main path and switches message, and wherein, said second switches message and the said the 3rd switches message and be used to indicate current path to switch;
Said establishment unit also is used for switching message or the said the 3rd according to said second and switches the new tunnel state piece of message establishing;
Said definite unit also is used for confirming that according to the tunnel state piece of creating before the protection type is link protection or Node Protection;
Said device also comprises:
Matching unit is used for the tunnel state piece of creating before according to said new tunnel state piece coupling;
Processing unit; Be used for confirming that in said definite unit the protection type is under the situation of link protection, the said tunnel state piece of creating before the deletion, perhaps; Confirm that in said definite unit the protection type is under the situation of Node Protection, delete said new tunnel state piece.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466340A (en) * | 2002-06-24 | 2004-01-07 | �人��������������ι�˾ | Method for forwarding data by strategic stream mode and data forwarding equipment |
| US6775230B1 (en) * | 2000-07-18 | 2004-08-10 | Hitachi, Ltd. | Apparatus and method for transmitting frames via a switch in a storage area network |
| CN1553661A (en) * | 2003-05-28 | 2004-12-08 | ��Ϊ��������˾ | Method for point to point transparent transmission |
| CN1863073A (en) * | 2005-09-09 | 2006-11-15 | 华为技术有限公司 | Method for implementing protection of terminal configuration data |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6775230B1 (en) * | 2000-07-18 | 2004-08-10 | Hitachi, Ltd. | Apparatus and method for transmitting frames via a switch in a storage area network |
| CN1466340A (en) * | 2002-06-24 | 2004-01-07 | �人��������������ι�˾ | Method for forwarding data by strategic stream mode and data forwarding equipment |
| CN1553661A (en) * | 2003-05-28 | 2004-12-08 | ��Ϊ��������˾ | Method for point to point transparent transmission |
| CN1863073A (en) * | 2005-09-09 | 2006-11-15 | 华为技术有限公司 | Method for implementing protection of terminal configuration data |
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