CN104184639A - Processing method and device for multi-point fault of EPRS loop circuit - Google Patents
Processing method and device for multi-point fault of EPRS loop circuit Download PDFInfo
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- CN104184639A CN104184639A CN201410338655.XA CN201410338655A CN104184639A CN 104184639 A CN104184639 A CN 104184639A CN 201410338655 A CN201410338655 A CN 201410338655A CN 104184639 A CN104184639 A CN 104184639A
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Abstract
The invention discloses a processing method and device for a multi-point fault of an EPRS loop circuit. The method includes the following steps: when a fault happens in a link of a Common port of a first interconnection node, the first interconnection node determines whether a multi-point fault happens in a main ring which the first interconnection node is in; and if the first interconnection node determines that the multi-point fault happens in the main ring, a first priority of triggering of a first MS event by the first interconnection node is determined; and the first interconnection node blocks a first subring port of the first interconnection node and sends a first MS message through the first subring port, wherein the first MS message carries the first priority. In the processing method and device for the multi-point fault of the ERPS loop circuit is capable of preventing problems of traffic interrupt and the like.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of processing method and equipment of EPRS loop multipoint fault.
Background technology
ERPS (Ethernet Ring Protection Switching, Ethernet ring protection switching switches) is a link layer protocol that is specifically applied to Ethernet ring.In the time that Ethernet ring is complete, ERPS can prevent the caused broadcast storm of data loopback.When on Ethernet ring, a link disconnects, ERPS can recover rapidly the communication path between each node on Ethernet ring (being the network equipment), possesses higher convergence rate.
As shown in Figure 1, be the networking schematic diagram of the ERPS networks that encircle more, this ERPS network comprises a main ring and two subrings.Wherein, comprise node A, Node B, node C and node D on main ring, node A is host node; Node B is neighbor node; node C and node D are ordinary node, and the link between node A and Node B is RPL (Ring Protection Link, looped network protection link).In subring 1, comprise node E, node F, node C and node D, node E is host node, and node F is neighbor node, and node C and node D are interlink node, and the node that connects main ring and subring is interlink node, and the link between node E and node F is RPL.In subring 2, comprise Node B, node C, node G and node H, node G is host node, and node H is neighbor node, and Node B and node C are interlink node, and the link between node G and node H is RPL.
In ERPS network, if there is no link occurs fault on loop, prevent the formation of loop by blocking the port at RPL two ends.If there is link occurs fault on loop, to block non-working port, and open the port at RPL two ends, thereby business is switched to RPL, the protection that completes loop is switched.
In the ERPS network of many rings, if main ring has multipoint fault, can cause the link of interlink node all to break down, and cause flow to interrupt.As shown in Figure 1, if the link occurs fault between Node B and node C, link occurs fault between node C and node D, node E and node F cannot perceive above-mentioned situation, can not open the port at RPL two ends, node G and node H cannot perceive above-mentioned situation, can not open the port at RPL two ends, and therefore the flow between node C and other node will interrupt.
Summary of the invention
The embodiment of the present invention provides a kind of Ethernet ring protection switching to switch the processing method of EPRS loop multipoint fault, said method comprising the steps of:
In the time of the link occurs fault at the public Common port place of the first interlink node, described the first interlink node determines whether the main ring at described the first interlink node place multipoint fault occurs; Wherein, described Common port is the port in the common link of main ring and subring;
If described the first interlink node is determined main ring generation multipoint fault, described the first interlink node determines that described the first interlink node triggers the first priority of the first manual MS of switching event;
Described the first interlink node blocks the first subring port in first subring at described the first interlink node place, and sends a MS message by described the first subring port, and a described MS message carries described the first priority;
Described the first interlink node receives the 2nd MS message that the second interlink node in described the first subring sends, and described the 2nd MS message carries the second priority of the 2nd MS event of the second interlink node triggering;
If described the second priority is higher than described the first priority, or described the second priority equals described the first priority and described the first interlink node is time interlink node, described the first interlink node stops sending a described MS message, and opens described the first subring port.
Described method also comprises:
In the time that described the first interlink node blocks described the first subring port, if described the first interlink node did not trigger MS event before the MS event of triggering, described the first interlink node starts the first timer corresponding to described the first subring port;
In the time of described the first timer expired, described the first interlink node is opened described the first subring port;
When described the second priority is higher than described the first priority, or described the second priority is while equaling described the first priority and described the first interlink node for time interlink node, if the current correspondence of described the first subring port has described the first timer, described the first interlink node is deleted described the first timer.
Described the first interlink node determines that whether the main ring at described the first interlink node place multipoint fault occurs, and specifically comprises:
Described the first interlink node judges whether the link at non-common port place breaks down; If so, determine the main ring generation multipoint fault at described the first interlink node place; Or,
If the first link failure SF message that described the first interlink node is received from described non-common port carries interconnected medium access control MAC Address, there is not multipoint fault in the main ring of determining described the first interlink node place, otherwise, determine the main ring generation multipoint fault at described the first interlink node place;
Wherein, described interconnected MAC Address is specially the MAC Address of described the second interlink node.
Described the first interlink node determines that described the first interlink node triggers the first priority of the first manual MS of switching event, specifically comprises:
In the time that described multipoint fault is the link occurs fault at Common port place of described the first interlink node and the link occurs fault at the non-Common port place of described the first interlink node, described the first interlink node determines that described the first priority is limit priority;
In the time that described the first interlink node is determined generation multipoint fault by a described SF message, described the first interlink node determines that described the first priority is for time high priority.
In the time that described the first interlink node is determined generation multipoint fault by a described SF message, described method also comprises:
Described the first interlink node sends the 2nd SF message by the non-Common port of described the first interlink node, described the 2nd SF message carries and triggers mark and the first subloop number, if so that receive on described main ring that the 3rd interlink node of described the 2nd SF message had triggered the second subring port block on MS event and described the 3rd interlink node and to should have the second timer time, when the comparative result of second subloop number at described the first subloop number and described the 3rd interlink node place meets preset rules, described the 3rd interlink node is deleted described second timer; Wherein, the interlink node that described triggering mark is used to indicate described the 2nd SF message of transmission had triggered MS event.
The embodiment of the present invention provides a kind of Ethernet ring protection switching to switch the treatment facility of EPRS loop multipoint fault, and as the first interlink node in loop network, described the first interlink node specifically comprises:
Determination module, for when the link occurs fault at the public Common port place of described the first interlink node, determines whether the main ring at described the first interlink node place multipoint fault occurs; Wherein, described Common port is the port in the common link of main ring and subring; If determine main ring generation multipoint fault, determine that described the first interlink node triggers the first priority of the first manual MS of switching event;
Sending module, for blocking the first subring port in first subring at described the first interlink node place, and sends a MS message by described the first subring port, and a described MS message carries described the first priority;
Receiver module, the 2nd MS message sending for the second interlink node receiving in described the first subring, described the 2nd MS message carries the second priority of the 2nd MS event of the second interlink node triggering;
Processing module, if be used for described the second priority higher than described the first priority, or described the second priority equals described the first priority and described the first interlink node is time interlink node, stops sending a described MS message, and opens described the first subring port.
Described processing module, also in the time that described the first interlink node blocks described the first subring port, if described the first interlink node did not trigger MS event before the MS event of triggering, starts the first timer corresponding to described the first subring port;
In the time of described the first timer expired, open described the first subring port;
When described the second priority is higher than described the first priority, or described the second priority is while equaling described the first priority and described the first interlink node for time interlink node, if the current correspondence of described the first subring port has described the first timer, delete described the first timer.
Described determination module, specifically in the time that whether the main ring of determining described the first interlink node place multipoint fault occurs, judges whether the link at non-common port place breaks down; If so, determine the main ring generation multipoint fault at described the first interlink node place; Or,
If the first link failure SF message that described the first interlink node is received from described non-common port carries interconnected medium access control MAC Address, there is not multipoint fault in the main ring of determining described the first interlink node place, otherwise, determine the main ring generation multipoint fault at described the first interlink node place;
Wherein, described interconnected MAC Address is specially the MAC Address of described the second interlink node.
Described determination module, specifically for determining that described the first interlink node triggers first when preferential of a MS event, in the time that described multipoint fault is the link occurs fault at Common port place of described the first interlink node and the link occurs fault at the non-Common port place of described the first interlink node, determine that described the first priority is limit priority; In the time that described the first interlink node is determined generation multipoint fault by a described SF message, determine that described the first priority is for time high priority.
In the time that described the first interlink node is determined generation multipoint fault by a described SF message,
Described sending module, also send the 2nd SF message for the non-Common port by described the first interlink node, described the 2nd SF message carries and triggers mark and the first subloop number, if so that receive on described main ring that the 3rd interlink node of described the 2nd SF message had triggered the second subring port block on MS event and described the 3rd interlink node and to should have the second timer time, when the comparative result of second subloop number at described the first subloop number and described the 3rd interlink node place meets preset rules, described the 3rd interlink node is deleted described second timer; Wherein, the interlink node that described triggering mark is used to indicate described the 2nd SF message of transmission had triggered MS event.
Based on technique scheme, in the embodiment of the present invention, in the ERPS network of many rings, if main ring has multipoint fault, interlink node carries the MS message of priority and sends and carry the SF message that triggers mark and subloop number to main ring by sending to subring, other interlink node is determined and blocked corresponding subring port, thereby avoid flow that the problems such as interruption occur, ensure flow normal transmission in the ERPS network of many rings.
Brief description of the drawings
Fig. 1 is the networking schematic diagram of the ERPS network of many rings;
Fig. 2 is the process flow figure of a kind of EPRS loop multipoint fault of providing of the embodiment of the present invention;
Fig. 3 is the application scenarios schematic diagram of the multipoint fault of embodiment of the present invention proposition;
Fig. 4 is the treatment facility structure chart of a kind of EPRS loop multipoint fault of providing of the embodiment of the present invention.
Embodiment
For problems of the prior art, the embodiment of the present invention provides a kind of processing method of EPRS loop multipoint fault, and the method can be applied in the ERPS network that comprises a main ring and multiple subrings.
In the embodiment of the present invention, two interlink nodes in a subring: (1) configures respectively Common (public) port on two interlink nodes, and this Common port is the port in the common link of main ring and subring.In addition, on interlink node, also comprise non-Common port and subring port.Non-Common port refers to interlink node other port except Common port on main ring.Subring port refer to interlink node with the same subring of Common port on other port except Common port.(2) on two interlink nodes, configure respectively interconnected MAC (Media Access Control, medium access control) address; Wherein, the MAC Address that the interconnected MAC Address configuring on an interlink node is another interlink node.(3) on an interlink node, configuring this interlink node is main (Primary) interlink node, and on another interlink node, configures this interlink node for time (Secondry) interlink node.
As shown in Figure 2, the processing method of this EPRS loop multipoint fault comprises the following steps:
Step 201, in the time of the link occurs fault at the Common of the first interlink node port place, the first interlink node determines whether the main ring at this first interlink node place multipoint fault occurs.
If the first interlink node is determined main ring generation multipoint fault, perform step 202; If the first interlink node determines that multipoint fault does not occur main ring, the first interlink node is processed according to prior art.
In the embodiment of the present invention, in the time that the link at the Common of the first interlink node port place does not break down, no matter on main ring, whether there is multipoint fault, the first interlink node all can not opened multipoint fault and detect, once the link occurs fault at the Common port place of the first interlink node, the first interlink node will be opened multipoint fault detection, and the first interlink node determines whether the main ring at this first interlink node place multipoint fault occurs.
In the embodiment of the present invention, the first interlink node determines that whether the main ring at this first interlink node place multipoint fault occurs, and specifically comprises: the first interlink node judges whether the link at the non-common port place of this first interlink node breaks down; If so, the first interlink node is determined the originally main ring generation multipoint fault at first interlink node place; Or, if SF (the Signal fail that the first interlink node is received from the non-common port of this first interlink node, link failure) while carrying interconnected MAC Address in message, the first interlink node determines that multipoint fault does not occur the main ring at this first interlink node place, otherwise the first interlink node is determined the main ring generation multipoint fault at this first interlink node place.
In the time that the node on main ring detects that ports having is broken down, this node can send SF message on main ring, and will carry the MAC Address of this node in the NodeID of SF message (node identification) field.Wherein, SF message can be based on R-APS (Ring Automatic Protection Switching; Ethernet ring APS) the SF message of agreement; the message format of R-APS agreement is identical with the message format of existing R-APS agreement; in the embodiment of the present invention, be referred to as R-APS message, and SF message refers to by the message of the SF field set of R-APS message.Based on this, the first interlink node, after non-common port is received a SF message, is resolved the NodeID field in a SF message; If the MAC Address of carrying in this NodeID field is interconnected MAC Address, the first interlink node determines that multipoint fault does not occur the main ring at this first interlink node place, otherwise the first interlink node is determined the main ring generation multipoint fault at this first interlink node place.
Step 202, the first interlink node determines that this first interlink node triggers the first priority of a MS (Manual Switch, manual switching) event.
In the embodiment of the present invention, the first interlink node determines that this first interlink node triggers the first priority of a MS event, specifically include but not limited to following mode: in the time that multipoint fault is the link occurs fault at Common port place of the first interlink node and the link occurs fault at the non-Common port place of the first interlink node, the first interlink node determines that the first priority is limit priority, follow-up taking limit priority as 0 as example; When the first interlink node is determined and occurred when multipoint fault by a SF message, the first interlink node determines that the first priority is for time high priority, and follow-up the following high priority is 1 to be example.
Step 203, the first interlink node blocks the first subring port in first subring at the first interlink node place, and sends a MS message by the first subring port on the first interlink node.
Wherein, the one MS message carries the first priority, and a MS message is when making the second interlink node in the first subring receive a MS message, if the second priority of the 2nd MS event that the second interlink node triggers is lower than the first priority, or second priority equal the first priority and the second interlink node for time interlink node, stop sending the 2nd MS message by the second interlink node, and open and trigger the subring port blocking when the 2nd MS event.
Step 204, the first interlink node receives the 2nd MS message that the second interlink node in the first subring sends, and the 2nd MS message carries the second priority of the 2nd MS event of the second interlink node triggering.
Step 205, if the second priority is higher than the first priority, or second priority equal the first priority and the first interlink node for time interlink node, the first interlink node stops sending a MS message, and opens the first subring port (the first subring port in first subring of blocking).
In the embodiment of the present invention, in the time that the first interlink node blocks the first subring port of the first interlink node, if the first interlink node did not trigger MS event before the MS event of triggering, the first interlink node starts the first timer that the first subring port is corresponding.Wherein, the subring port that the timer that subring port is corresponding blocks because of MS Event triggered for overtime relieving, and the subring port blocking on interlink node because of MS Event triggered is the loop that may occur in network in the short time in order to prevent.Based on this, when the first timer expired corresponding to the first subring port, the first interlink node is opened the first subring port.
Further, when the second priority is higher than the first priority, or second priority while equaling the first priority and the first interlink node for time interlink node, if the first subring port is current to there being the first timer, the first interlink node can also be deleted the first timer that the first subring port is corresponding.
In the embodiment of the present invention, in MS message, can reserve precedence field, precedence field is for identifying the rank of MS event, and as 0 expression limit priority, 1 represents time high priority, therefore in a MS message, can carry the first priority.Wherein, MS message can be the MS message based on R-APS agreement, and the message format of R-APS agreement is identical with the message format of existing R-APS agreement, is referred to as R-APS message in the embodiment of the present invention, and MS message refers to the message of the MS set of R-APS message.
In the embodiment of the present invention, in the time that the first interlink node is determined generation multipoint fault by a SF message, the first interlink node can also send the 2nd SF message by the non-Common port of the first interlink node, in the 2nd SF message, carry and trigger mark and the first subloop number, if triggered MS event so that receive the 3rd interlink node of the 2nd SF message on main ring, and the second subring port block on the 3rd interlink node to should have the second timer time, when the comparative result of second subloop number at the first subloop number and the 3rd interlink node place meets preset rules, the 3rd interlink node is deleted this second timer.Wherein, the interlink node that triggering mark is used to indicate transmission the 2nd SF message had triggered MS event.
In the embodiment of the present invention, in SF message, can reserve triggering identification field, and trigger identification field and represent that interlink node on main ring was whether because multipoint fault triggered MS event to certain subring, what carry in triggering identification field is while triggering mark (as 1), expression interlink node has been given certain subring because of multipoint fault and had been triggered MS event, what carry in triggering identification field is while not triggering mark (as 0), represents that interlink node was not because multipoint fault triggered MS event to certain subring.In the time that interlink node triggered MS event to certain subring because of multipoint fault, in SF message, also can carry the subloop number of this subring.
Wherein, this triggering identification field can represent by already () marker bit, already mark position bit representation interlink node has been given certain subring because of multipoint fault and had been triggered MS event, and already marker bit not set represents that interlink node was not because multipoint fault triggered MS event to certain subring.Further, on interlink node, also can safeguard already marker bit, if set of already marker bit, represent interlink node because of multipoint fault give certain subring triggered MS event, if already marker bit does not have set, represent that interlink node was not because multipoint fault triggered MS event to certain subring.
In the embodiment of the present invention, in the time that the multipoint fault on main ring recovers, each interlink node can be removed MS event, and removes the already marker bit of self, and subring RPL port recovers blocked state.
Based on technique scheme, in the embodiment of the present invention, in the ERPS network of many rings, if main ring has multipoint fault, interlink node carries the MS message of priority and sends and carry the SF message that triggers mark and subloop number to main ring by sending to subring, other interlink node is determined and blocked corresponding subring port, thereby avoid flow that the problems such as interruption occur, ensure flow normal transmission in the ERPS network of many rings.
The technical scheme embodiment of the present invention being provided below in conjunction with concrete application scenarios is elaborated.
Application scenarios 1.As shown in Figure 1, comprise node A, Node B, node C and node D on main ring, node A is host node, and Node B is neighbor node, and node C and node D are ordinary node, and the link between node A and Node B is RPL.In subring 1, comprise node E, node F, node C and node D, node E is host node, and node F is neighbor node, and node C and node D are interlink node, and the link between node E and node F is RPL.In subring 2, comprise Node B, node C, node G and node H, node G is host node, and node H is neighbor node, and Node B and node C are interlink node, and the link between node G and node H is RPL.
For two interlink nodes in subring 1 (node C and node D), on node C, configured port 7 is Common port, configure the MAC Address that interconnected MAC Address is node D, configuration node C is time interlink node, and the non-Common port-for-port 6 on node C, the subring port-for-port 8 on node C; On node D, configured port 10 is Common port, configures the MAC Address that interconnected MAC Address is node C, and configuration node D is main interlink node, and non-Common port-for-port 11 on node D, the subring port-for-port 12 on node D.For two interlink nodes (node C and Node B) in subring 2, on node C, configured port 6 is Common port, configure the MAC Address that interconnected MAC Address is Node B, configuration node C is time interlink node, and the non-Common port-for-port 7 on node C, the subring port-for-port 9 on node C; In Node B, configured port 4 is Common port, configures the MAC Address that interconnected MAC Address is node C, and configuration node B is main interlink node, and non-Common port-for-port 3 in Node B, the subring port-for-port 5 in Node B.
In the time not breaking down on main ring, RPL in main ring and subring is in blocked state, it is node A port blocked 1, Node B port blocked 3, node E port blocked 14, node F port blocked 15, node G port blocked 18, node H port blocked 19, now, all node intercommunications and do not produce loop in network.
If the link occurs fault between port one 0 and port 7, and other link on main ring does not break down.Node D can detect the link occurs fault that Common port (port one 0) is corresponding, now node D determines that the link that non-Common port (port one 1) is corresponding does not break down, and carry the SF message of the MAC Address of this node D from port one 1 transmission, and what the SF message of receiving from port one 1, carry is interconnected MAC Address, therefore node D determines that multipoint fault does not occur main ring, end process flow process.In like manner, node C can detect the link occurs fault that Common port (port 7) is corresponding, now node C determines that the link that non-Common port (port 6) is corresponding does not break down, and carry the SF message of the MAC Address of this node C from port 6 transmissions, and what the SF message of receiving from port 6, carry is interconnected MAC Address, therefore node C determines that multipoint fault does not occur main ring, end process flow process.Node A and Node B, receiving after the SF message that node C or node D send, are opened respectively port one and port 3.
If the link occurs fault between port one 0 and port 7, and link occurs fault between port 4 and port 6.For subring 1, node D can detect the link occurs fault of port one 0 correspondence, now node D determines that the link of port one 1 correspondence does not break down, and carry the SF message of the MAC Address of this node D from port one 1 transmission, and what the SF message of receiving from port one 1, carry is the MAC Address of Node B, be not interconnected MAC Address (not being the MAC Address of node C), therefore node D determines main ring generation multipoint fault.Node C can detect the link occurs fault of port 7 correspondences, and now node C determines the link occurs fault of port 6 correspondences, and therefore node C determines main ring generation multipoint fault.For subring 2, Node B can detect the link occurs fault of port 4 correspondences, now Node B determines that the link of port 3 correspondences does not break down, and carry the SF message of the MAC Address of this Node B from port 3 transmissions, and what the SF message of receiving from port 3, carry is the MAC Address of node D, be not interconnected MAC Address (not being the MAC Address of node C), therefore Node B is determined main ring generation multipoint fault.Node C can detect the link occurs fault of port 6 correspondences, and now node C determines the link occurs fault of port 7 correspondences, and therefore node C determines main ring generation multipoint fault.
For subring 1, because node D is determined multipoint fault is occurred by SF message, therefore node D sends to subring 1 by port one 2 that to carry priority be 1 MS message, and block the port one 2 in subring 1, and owing to not triggering MS event, the therefore timer of its enable port 12 correspondences before node D; Further, node D sends the SF message that carries the already marker bit of set and the ring number of subring 1 to main ring by port one 1.Because node C is determined multipoint fault is occurred by the link at Common port place and the link occurs fault at non-Common port place, therefore node C sends to subring 1 by port 8 that to carry priority be 0 MS message, and block the port 8 in subring 1, and owing to not triggering MS event (being first treated to example for subring 1 with node C describes), the therefore timer of its enable port 8 correspondences before node C.For subring 2, because Node B is to be determined multipoint fault is occurred by SF message, therefore Node B sends to subring 2 by port 5 that to carry priority be 1 MS message, and blocks the port 5 in subring 2, and owing to not triggering MS event, the therefore timer of its enable port 5 correspondences before Node B; Further, Node B sends the SF message that carries the already marker bit of set and the ring number of subring 2 to main ring by port 3.Because node C is determined multipoint fault is occurred by the link at Common port place and the link occurs fault at non-Common port place, therefore node C sends to subring 2 by port 9 that to carry priority be 0 MS message, and block the port 9 in subring 2, and owing to having triggered MS event (having triggered the MS event for subring 1) before node C, therefore, do not need the timer of its enable port 9 correspondences.
For subring 1, node E, after receiving MS message, opens port one 4, and node F, after receiving MS message, opens port one 5.For subring 2, node G, after receiving MS message, opens port one 8, and node H, after receiving MS message, opens port one 9.
For subring 1, if situation one node D first receives the MS message that node C sends, after receive the already marker bit that carries set that Node B sends and the SF message of the ring number of subring 2,: node D is after the MS message that to receive from the priority of node C be 0, because priority 0 is higher than the priority 1 of self, therefore node D stops sending to subring 1 by port one 2 that to carry priority be 1 MS message, and open the port one 2 in the subring 1 of blocking before, and delete the timer of port one 2 correspondences.Node D, after the SF message of receiving from the already marker bit that carries set of Node B and the ring number of subring 2, owing to there is no timer on node D, is not therefore doing any processing.Situation two, if node D first receives the SF message of the already marker bit that carries set of Node B transmission and the ring number of subring 2, after receive node C send MS message, : node D is after the SF message of receiving from the already marker bit that carries set of Node B and the ring number of subring 2, on node D, there is the timer of port one 2 correspondences, but the ring number of the subring 1 that node D is corresponding is less than the ring number (default rule is: node place subloop number is greater than the subloop number carrying in SF message) of the subring 2 of carrying in SF message, therefore, node D is left intact.Node D is after the MS message that to receive from the priority of node C be 0, because priority 0 is higher than the priority 1 of self, therefore node D stops sending to subring 1 by port one 2 that to carry priority be 1 MS message, and open the port one 2 in the subring 1 of blocking before, and delete the timer of port one 2 correspondences.
For subring 1, node C, after the MS message that to receive from the priority of node D be 1, because priority 1 is lower than the priority 0 of self, is not therefore doing any processing.Due to the equal fault of link corresponding to all of the port of node C on main ring, therefore can not receive SF message.
For subring 2, if situation one Node B is first received the MS message that node C sends, after receive the already marker bit that carries set that node D sends and the SF message of the ring number of subring 1,: Node B is after the MS message that to receive from the priority of node C be 0, because priority 0 is higher than the priority 1 of self, therefore Node B stops sending to subring 2 by port 5 that to carry priority be 1 MS message, and open the port 5 in the subring 2 of blocking before, and delete the timer of port 5 correspondences.Node B, after the SF message of receiving from the already marker bit that carries set of node D and the ring number of subring 1, owing to there is no timer in Node B, is not therefore being done any processing.If situation two Node B are first received the SF message of the already marker bit that carries set of node D transmission and the ring number of subring 2, after receive node C send MS message,: Node B is after the SF message of receiving from the already marker bit that carries set of node D and the ring number of subring 1, in Node B, there is the timer of port 5 correspondences, and the ring number of subring 2 corresponding to Node B is greater than the ring number of the subring 1 of carrying in SF message, therefore, Node B is deleted the timer of port 5 correspondences.Node B is after the MS message that to receive from the priority of node C be 0, because priority 0 is higher than the priority 1 of self, therefore Node B stops sending to subring 2 by port 5 that to carry priority be 1 MS message, and open before block subring 2 on port 5, because the timer of port 5 correspondences is deleted, therefore Node B is without deleting timer.
For subring 2, node C, after the MS message that to receive from the priority of Node B be 1, because priority 1 is lower than the priority 0 of self, is not therefore doing any processing.
Further, after process certain hour, the timer of upper port 8 correspondences that start of node C will be overtime, the port 8 in the subring 1 that now node C blocks before can opening.
Through after above-mentioned processing, the link occurs fault between port one 0 and port 7, and when link occurs fault between port 4 and port 6; only has port 9 on node C in blocked state; now, the normally intercommunication of all flows in network, and can not produce loop.
Application scenarios 2.As shown in Figure 3, comprise node A, Node B, node C and node D on main ring, node A is host node, and Node B is neighbor node, and node C and node D are ordinary node, and the link between node A and Node B is RPL.In subring 1, comprise node E, node F, node C and node D, node E is host node, and node F is neighbor node, and node C and node D are interlink node, and the link between node E and node F is RPL.In subring 2, comprise node A, Node B, node G and node H, node G is host node, and node H is neighbor node, and node A and Node B are interlink node, and the link between node G and node H is RPL.For two interlink nodes in subring 1 (node C and node D), on node C, configured port 8 is Common port, configure the MAC Address that interconnected MAC Address is node D, configuration node C is time interlink node, and the non-Common port-for-port 7 on node C, the subring port-for-port 9 on node C; On node D, configured port 10 is Common port, configures the MAC Address that interconnected MAC Address is node C, and configuration node D is main interlink node, and non-Common port-for-port 11 on node D, the subring port-for-port 12 on node D.For two interlink nodes (node A and Node B) in subring 2, on node A, configured port 1 is Common port, configure the MAC Address that interconnected MAC Address is Node B, configuration node A is time interlink node, and the non-Common port-for-port 2 on node A, the subring port-for-port 3 on node A; In Node B, configured port 4 is Common port, configures the MAC Address that interconnected MAC Address is node A, and configuration node B is main interlink node, and non-Common port-for-port 5 in Node B, the subring port-for-port 6 on node C.
In the time not breaking down on main ring, all RPL ports of main ring and subring are all in blocking turntable, it is node A port blocked 1, Node B port blocked 4, node E port blocked 14, node F port blocked 16, node G port blocked 20, node H port blocked 18, now, all node intercommunications and do not produce loop in network.
If the link occurs fault between port one and port 4, and link occurs fault between port one 0 and port 8.For subring 1, node D can detect the link occurs fault of port one 0 correspondence, now node D determines that the link of port one 1 correspondence does not break down, and carry the SF message of the MAC Address of this node D from port one 1 transmission, and the MAC Address of the node A carrying the SF message of receiving from port one 1, be not interconnected MAC Address (not being the MAC Address of node C), therefore node D determines main ring generation multipoint fault.Node C can detect the link occurs fault of port 8 correspondences, now node C determines that the link of port 7 correspondences does not break down, and carry the SF message of the MAC Address of this node C from port 7 transmissions, and what the SF message of receiving from port 7, carry is the MAC Address of Node B, be not interconnected MAC Address (not being the MAC Address of node D), therefore node C determines main ring generation multipoint fault.For subring 2, node A can detect the link occurs fault that port one is corresponding, now node A determines that the link of port 2 correspondences does not break down, and carry the SF message of the MAC Address of this node A from port 2 transmissions, and what the SF message of receiving from port 2, carry is the MAC Address of node D, be not interconnected MAC Address (not being the MAC Address of Node B), therefore node A determines main ring generation multipoint fault.Node B can detect the link occurs fault of port 4 correspondences, now Node B determines that the link of port 5 correspondences does not break down, and carry the SF message of the MAC Address of this Node B from port 5 transmissions, and what the SF message of receiving from port 5, carry is the MAC Address of node C, be not interconnected MAC Address (not being the MAC Address of node A), therefore Node B is determined main ring generation multipoint fault.
For subring 1, because node D is determined multipoint fault is occurred by SF message, therefore node D sends to subring 1 by port one 2 that to carry priority be 1 MS message, and block the port one 2 in subring 1, and owing to not triggering MS event, the therefore timer of its enable port 12 correspondences before node D; Further, node D sends the SF message that carries the already marker bit of set and the ring number of subring 1 to main ring by port one 1.Because node C is determined multipoint fault is occurred by SF message, therefore node C sends to subring 1 by port 9 that to carry priority be 1 MS message, and block the port 9 in subring 1, and owing to not triggering MS event, the therefore timer of its enable port 9 correspondences before node C; Further, node C sends the SF message that carries the already marker bit of set and the ring number of subring 1 to main ring by port 7.
For subring 2, because node A is determined multipoint fault is occurred by SF message, therefore node A sends to subring 2 by port 3 that to carry priority be 1 MS message, and blocks the port 3 in subring 2, and owing to not triggering MS event, the therefore timer of its enable port 3 correspondences before node A; Further, node A sends the SF message that carries the already marker bit of set and the ring number of subring 2 to main ring by port 2.Because Node B is to be determined multipoint fault is occurred by SF message, therefore Node B sends to subring 2 by port 6 that to carry priority be 1 MS message, and block the port 6 in subring 2, and owing to not triggering MS event, the therefore timer of its enable port 6 correspondences before Node B; Further, Node B sends the SF message that carries the already marker bit of set and the ring number of subring 2 to main ring by port 5.
For subring 1, node E, after receiving MS message, opens port one 4, and node F, after receiving MS message, opens port one 6.For subring 2, node G, after receiving MS message, opens port 20, and node H, after receiving MS message, opens port one 8.
For subring 1, if situation one node D first receives the MS message that node C sends, after receive the already marker bit that carries set that node A sends and the SF message of the ring number of subring 2,: node D is after the MS message that to receive from the priority of node C be 1, because priority 1 equals self priority 1, and node D, from as main interlink node, is not therefore doing any processing.Node D is after the SF message of receiving from the already marker bit that carries set of node A and the ring number of subring 2, on node D, there is the timer of port one 2 correspondences, but because the ring number of subring 1 corresponding to node D is less than the ring number (preset rules is: node place subloop number is greater than the subloop number carrying in SF message) of the subring 2 of carrying in SF message, therefore node D is not doing any processing.If situation two node D first receive the SF message of the already marker bit that carries set of node A transmission and the ring number of subring 2, after receive node C send MS message,: node D is after the SF message of receiving from the already marker bit that carries set of node A and the ring number of subring 2, on node D, there is the timer of port one 2 correspondences, but because the ring number of subring 1 corresponding to node D is less than the ring number of the subring 2 of carrying in SF message, therefore node D is not doing any processing.Node D is after the MS message that to receive from the priority of node C be 1, and because priority 1 equals self priority 1, and node D is from as main interlink node, is not therefore doing any processing.
For subring 1, if situation one node C first receives the MS message that node D sends, after receive the already marker bit that carries set that Node B sends and the SF message of the ring number of subring 2,: node C is after the MS message that to receive from the priority of node D be 1, because priority 1 equals self priority 1, and node C is certainly as inferior interlink node, therefore node C stops sending to subring 1 by port 9 that to carry priority be 1 MS message, and open the port 9 in the subring 1 of blocking before, and delete the timer of port 9 correspondences.Node C, after the SF message of receiving from the already marker bit that carries set of Node B and the ring number of subring 2, because the ring number of subring 1 corresponding to node C is less than the ring number of the subring 2 of carrying in SF message, is not therefore doing any processing.If situation two node C first receive the SF message of the already marker bit that carries set of Node B transmission and the ring number of subring 2, after receive node D send MS message,: node C is after the SF message of receiving from the already marker bit that carries set of Node B and the ring number of subring 2, on node C, there is the timer of port 9 correspondences, but because the ring number of subring 1 corresponding to node C is less than the ring number of the subring 2 of carrying in SF message, therefore node C is not doing any processing.Node C is after the MS message that to receive from the priority of node D be 1, because priority 1 equals self priority 1, and node C is certainly as inferior interlink node, therefore node C stops sending to subring 1 by port 9 that to carry priority be 1 MS message, and open the port 9 in the subring 1 of blocking before, and delete the timer of port 9 correspondences.
For subring 2, if node A first receives the MS message that Node B sends, after receive the already marker bit that carries set that node D sends and the SF message of the ring number of subring 1,: node A is after the MS message that to receive from the priority of Node B be 1, because priority 1 equals self priority 1, and node A is certainly as inferior interlink node, therefore node A stops sending to subring 2 by port 3 that to carry priority be 1 MS message, and open the port 3 in the subring 2 of blocking before, and delete the timer of port 3 correspondences.Node A is after the SF message of receiving from the already marker bit that carries set of node D and the ring number of subring 1, although the ring number of the subring 2 that node A is corresponding is greater than the ring number of the subring 1 of carrying in SF message, but owing to there is no timer on node A, therefore do not doing any processing.If situation two node A first receive the SF message of the already marker bit that carries set of node D transmission and the ring number of subring 1, after receive Node B send MS message,: node A is after the SF message of receiving from the already marker bit that carries set of node D and the ring number of subring 1, on node A, there is the timer of port 3 correspondences, and the ring number of the subring 2 that node A is corresponding is greater than the ring number of the subring 1 of carrying in SF message, therefore, node A deletes the timer of port 3 correspondences.Node A is after the MS message that to receive from the priority of Node B be 1, because priority 1 equals self priority 1, and node A is certainly as inferior interlink node, therefore node A stops sending to subring 2 by port 3 that to carry priority be 1 MS message, and open before block subring 2 on port 3, because the timer of port 3 correspondences is deleted, therefore node A is without deleting timer.
For subring 2, if situation one Node B is first received the MS message that node A sends, after receive the already marker bit that carries set that node C sends and the SF message of the ring number of subring 1,: Node B is after the MS message that to receive from the priority of node A be 1, because priority 1 equals self priority 1, and Node B, from as main interlink node, is not therefore being done any processing.Node B is after the SF message of receiving from the already marker bit that carries set of node C and the ring number of subring 1, because the ring number of subring 2 corresponding to Node B is greater than the ring number of the subring 1 of carrying in SF message, and the timer of ports having 6 correspondences still in Node B, therefore, Node B is deleted the timer of port 6 correspondences.If situation two Node B are first received the SF message of the already marker bit that carries set of node C transmission and the ring number of subring 1, after receive node A send MS message,: Node B is after the SF message of receiving from the already marker bit that carries set of node C and the ring number of subring 1, because the ring number of subring 2 corresponding to Node B is greater than the ring number of the subring 1 of carrying in SF message, and the timer of ports having 6 correspondences still in Node B, therefore, Node B is deleted the timer of port 6 correspondences.Node B is after the MS message that to receive from the priority of node A be 1, and because priority 1 equals self priority 1, and Node B is from as main interlink node, is not therefore doing any processing.
After certain hour, the timer of upper port one 2 correspondences that start of node D will be overtime, the port one 2 in the subring 1 that now node D blocks before can opening.
After the above-mentioned processing of process; link occurs fault between port one 0 and port 8; and when link occurs fault between port one and port 4; because the timer of port 6 correspondences is deleted, therefore, port 6 will be always in blocked state; be in network, to only have port 6 in Node B in blocked state; now, the normally intercommunication of all flows in network, and can not produce loop.
Based on the inventive concept same with said method, in the embodiment of the present invention, provide a kind of Ethernet ring protection switching to switch the treatment facility of EPRS loop multipoint fault, as the first interlink node in loop network, as shown in Figure 4, described the first interlink node specifically comprises:
Determination module 11, for when the link occurs fault at the public Common port place of described the first interlink node, determines whether the main ring at described the first interlink node place multipoint fault occurs; Wherein, described Common port is the port in the common link of main ring and subring; If determine main ring generation multipoint fault, determine that described the first interlink node triggers the first priority of the first manual MS of switching event;
Sending module 12, for blocking the first subring port in first subring at described the first interlink node place, and sends a MS message by described the first subring port, and a described MS message carries described the first priority;
Receiver module 13, the 2nd MS message sending for the second interlink node receiving in described the first subring, described the 2nd MS message carries the second priority of the 2nd MS event of the second interlink node triggering;
Processing module 14, if be used for described the second priority higher than described the first priority, or described the second priority equals described the first priority and described the first interlink node is time interlink node, stops sending a described MS message, and opens described the first subring port.
Described processing module 14, also in the time that described the first interlink node blocks described the first subring port, if described the first interlink node did not trigger MS event before the MS event of triggering, starts the first timer corresponding to described the first subring port;
In the time of described the first timer expired, open described the first subring port;
When described the second priority is higher than described the first priority, or described the second priority is while equaling described the first priority and described the first interlink node for time interlink node, if the current correspondence of described the first subring port has described the first timer, delete described the first timer.
Described determination module 11, specifically in the time that whether the main ring of determining described the first interlink node place multipoint fault occurs, judges whether the link at non-common port place breaks down; If so, determine the main ring generation multipoint fault at described the first interlink node place; Or,
If the first link failure SF message that described the first interlink node is received from described non-common port carries interconnected medium access control MAC Address, there is not multipoint fault in the main ring of determining described the first interlink node place, otherwise, determine the main ring generation multipoint fault at described the first interlink node place;
Wherein, described interconnected MAC Address is specially the MAC Address of described the second interlink node.
Described determination module 11, specifically for determining that described the first interlink node triggers first when preferential of a MS event, in the time that described multipoint fault is the link occurs fault at Common port place of described the first interlink node and the link occurs fault at the non-Common port place of described the first interlink node, determine that described the first priority is limit priority; In the time that described the first interlink node is determined generation multipoint fault by a described SF message, determine that described the first priority is for time high priority.
In the time that described the first interlink node is determined generation multipoint fault by a described SF message,
Described sending module 12, also send the 2nd SF message for the non-Common port by described the first interlink node, described the 2nd SF message carries and triggers mark and the first subloop number, if so that receive on described main ring that the 3rd interlink node of described the 2nd SF message had triggered the second subring port block on MS event and described the 3rd interlink node and to should have the second timer time, when the comparative result of second subloop number at described the first subloop number and described the 3rd interlink node place meets preset rules, described the 3rd interlink node is deleted described second timer, wherein, the interlink node that described triggering mark is used to indicate described the 2nd SF message of transmission had triggered MS event.
Wherein, the modules of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into multiple submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into multiple submodules.The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. Ethernet ring protection switching switches a processing method for EPRS loop multipoint fault, it is characterized in that, said method comprising the steps of:
In the time of the link occurs fault at the public Common port place of the first interlink node, described the first interlink node determines whether the main ring at described the first interlink node place multipoint fault occurs; Wherein, described Common port is the port in the common link of main ring and subring;
If described the first interlink node is determined main ring generation multipoint fault, described the first interlink node determines that described the first interlink node triggers the first priority of the first manual MS of switching event;
Described the first interlink node blocks the first subring port in first subring at described the first interlink node place, and sends a MS message by described the first subring port, and a described MS message carries described the first priority;
Described the first interlink node receives the 2nd MS message that the second interlink node in described the first subring sends, and described the 2nd MS message carries the second priority of the 2nd MS event of the second interlink node triggering;
If described the second priority is higher than described the first priority, or described the second priority equals described the first priority and described the first interlink node is time interlink node, described the first interlink node stops sending a described MS message, and opens described the first subring port.
2. the method for claim 1, is characterized in that, described method also comprises:
In the time that described the first interlink node blocks described the first subring port, if described the first interlink node did not trigger MS event before the MS event of triggering, described the first interlink node starts the first timer corresponding to described the first subring port;
In the time of described the first timer expired, described the first interlink node is opened described the first subring port;
When described the second priority is higher than described the first priority, or described the second priority is while equaling described the first priority and described the first interlink node for time interlink node, if the current correspondence of described the first subring port has described the first timer, described the first interlink node is deleted described the first timer.
3. the method for claim 1, is characterized in that, described the first interlink node determines that whether the main ring at described the first interlink node place multipoint fault occurs, and specifically comprises:
Described the first interlink node judges whether the link at non-common port place breaks down; If so, determine the main ring generation multipoint fault at described the first interlink node place; Or,
If the first link failure SF message that described the first interlink node is received from described non-common port carries interconnected medium access control MAC Address, there is not multipoint fault in the main ring of determining described the first interlink node place, otherwise, determine the main ring generation multipoint fault at described the first interlink node place;
Wherein, described interconnected MAC Address is specially the MAC Address of described the second interlink node.
4. method as claimed in claim 3, is characterized in that, described the first interlink node determines that described the first interlink node triggers the first priority of the first manual MS of switching event, specifically comprises:
In the time that described multipoint fault is the link occurs fault at Common port place of described the first interlink node and the link occurs fault at the non-Common port place of described the first interlink node, described the first interlink node determines that described the first priority is limit priority;
In the time that described the first interlink node is determined generation multipoint fault by a described SF message, described the first interlink node determines that described the first priority is for time high priority.
5. method according to claim 3, is characterized in that, in the time that described the first interlink node is determined generation multipoint fault by a described SF message, described method also comprises:
Described the first interlink node sends the 2nd SF message by the non-Common port of described the first interlink node, described the 2nd SF message carries and triggers mark and the first subloop number, if so that receive on described main ring that the 3rd interlink node of described the 2nd SF message had triggered the second subring port block on MS event and described the 3rd interlink node and to should have the second timer time, when the comparative result of second subloop number at described the first subloop number and described the 3rd interlink node place meets preset rules, described the 3rd interlink node is deleted described second timer; Wherein, the interlink node that described triggering mark is used to indicate described the 2nd SF message of transmission had triggered MS event.
6. Ethernet ring protection switching switches a treatment facility for EPRS loop multipoint fault, as the first interlink node in loop network, it is characterized in that, described the first interlink node specifically comprises:
Determination module, for when the link occurs fault at the public Common port place of described the first interlink node, determines whether the main ring at described the first interlink node place multipoint fault occurs; Wherein, described Common port is the port in the common link of main ring and subring; If determine main ring generation multipoint fault, determine that described the first interlink node triggers the first priority of the first manual MS of switching event;
Sending module, for blocking the first subring port in first subring at described the first interlink node place, and sends a MS message by described the first subring port, and a described MS message carries described the first priority;
Receiver module, the 2nd MS message sending for the second interlink node receiving in described the first subring, described the 2nd MS message carries the second priority of the 2nd MS event of the second interlink node triggering;
Processing module, if be used for described the second priority higher than described the first priority, or described the second priority equals described the first priority and described the first interlink node is time interlink node, stops sending a described MS message, and opens described the first subring port.
7. equipment as claimed in claim 6, is characterized in that,
Described processing module, also in the time that described the first interlink node blocks described the first subring port, if described the first interlink node did not trigger MS event before the MS event of triggering, starts the first timer corresponding to described the first subring port;
In the time of described the first timer expired, open described the first subring port;
When described the second priority is higher than described the first priority, or described the second priority is while equaling described the first priority and described the first interlink node for time interlink node, if the current correspondence of described the first subring port has described the first timer, delete described the first timer.
8. equipment as claimed in claim 6, is characterized in that,
Described determination module, specifically in the time that whether the main ring of determining described the first interlink node place multipoint fault occurs, judges whether the link at non-common port place breaks down; If so, determine the main ring generation multipoint fault at described the first interlink node place; Or,
If the first link failure SF message that described the first interlink node is received from described non-common port carries interconnected medium access control MAC Address, there is not multipoint fault in the main ring of determining described the first interlink node place, otherwise, determine the main ring generation multipoint fault at described the first interlink node place;
Wherein, described interconnected MAC Address is specially the MAC Address of described the second interlink node.
9. equipment as claimed in claim 8, is characterized in that,
Described determination module, specifically for determining that described the first interlink node triggers first when preferential of a MS event, in the time that described multipoint fault is the link occurs fault at Common port place of described the first interlink node and the link occurs fault at the non-Common port place of described the first interlink node, determine that described the first priority is limit priority; In the time that described the first interlink node is determined generation multipoint fault by a described SF message, determine that described the first priority is for time high priority.
10. equipment as claimed in claim 8, is characterized in that, in the time that described the first interlink node is determined generation multipoint fault by a described SF message,
Described sending module, also send the 2nd SF message for the non-Common port by described the first interlink node, described the 2nd SF message carries and triggers mark and the first subloop number, if so that receive on described main ring that the 3rd interlink node of described the 2nd SF message had triggered the second subring port block on MS event and described the 3rd interlink node and to should have the second timer time, when the comparative result of second subloop number at described the first subloop number and described the 3rd interlink node place meets preset rules, described the 3rd interlink node is deleted described second timer; Wherein, the interlink node that described triggering mark is used to indicate described the 2nd SF message of transmission had triggered MS event.
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