CN102055661B - Ethernet multi-ring network protection method under multipoint fault condition and interconnected nodes - Google Patents
Ethernet multi-ring network protection method under multipoint fault condition and interconnected nodes Download PDFInfo
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- CN102055661B CN102055661B CN200910237458.8A CN200910237458A CN102055661B CN 102055661 B CN102055661 B CN 102055661B CN 200910237458 A CN200910237458 A CN 200910237458A CN 102055661 B CN102055661 B CN 102055661B
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Abstract
The invention discloses an Ethernet multi-ring network protection method under a multipoint fault condition, comprising the following steps: two paired interconnected nodes on a subring transmit health link (HL) frames to each other on a main ring control channel, and operate a health timer (HTR); when the HTR is overtime and receives no HL frame, the interconnected nodes start a comparison timer (CTR), and periodically transmit comparison (CP) frames on the main ring control channel, the CP frames carry the control channel identifier (RC_ID) of a connecting subring of the interconnected nodes; and the interconnected nodes receiving the CP frames compare the RC_ID carried in the CP frames with the RC_ID of the connecting subring, and determine whether to trigger address refreshing on the connecting subring and start a protected data forwarding function according to the comparative result and the CTR. The invention ensures that when two main ring links between the interconnected nodes are out of order, the control nodes of the subring can start the protected data forwarding function from a port.
Description
Technical field
The present invention relates to the ether multi-ring network resist technology in data communication, relate in particular to the guard method of ether multi-ring network and interconnecting nodes under a kind of multipoint fault.
Background technology
Along with the development of Ethernet towards multiple service supporting direction, particularly some business are more and more higher to the reliability of network, requirement of real-time, and Ethernet has extensively adopted annular networking to improve network reliability.In the protection of looped network, conventionally require quick protective switch, the time that protection is switched reaches below 50ms.The technology of current this quick protective switch has Internet Engineering task groups (IETF; Internet Engineering TaskForce) RFC3619, International Telecommunications Union (ITU-T, International TelecommunicationUnion) G.8032 etc.
Existing ether multi-ring network as shown in Figure 1, node S1 to S6 is ethernet switching device, network B is connected with node S2, network A is connected with node S5, the physical pathway communicating between network A and network B has four: network A ← → node S5 ← → node S3 ← → node S2 ← → network B, network A ← → node S5 ← → node S3 ← → node S4 ← → node S1 ← → node S2 ← → network B, network A ← → node S5 ← → node S6 ← → node S4 ← → node S3 ← → node S2 ← → network B, network A ← → node S5 ← → node S6 ← → node S4 ← → node S1 ← → node S2 ← → network B.
When the resist technology of application ether multi-ring network; conventionally adopt ring (Ring) and subring (Sub-Ring);; ring is a complete ether ring; subring is a kind of ether ring being connected with other ring or network by interconnecting nodes (Interconnection Node); interconnecting nodes is the common node that simultaneously belongs to two or more ether rings, and interconnecting nodes also can be called shared node.As shown in Figure 2, comprise a ring and a subring in figure, Ring1 is ring, and Ring2 is subring.The node that Ring1 comprises has S1, S2, S3 and S4, the link comprising has: <S1, S2>, <S2, S3>, <S3, S4> and <S4, S1>; The node that Ring2 comprises has S3, S5, S6 and S4, and the link comprising has: <S3, S5>, <S5, S6> and <S6, S4>.Need to be ben, <S3, S4> link belongs to Ring1, and does not belong to Ring2.Wherein, node S3 and S4 are the interconnecting nodes of Ring1 and Ring2, and 33 ports of node S3 and 43 ports of node S4 belong to Ring2, are called access interface.
In the trouble-free situation of looped network; in a ring/subring, need to have one section of link to block to prevent into ring to the forwarding of data message; this section of link is called ring protection link (or often blocking link), the switching of primary path and Protection path in encircling by this section of ring protection link participation.The node that has ring protection link is called ring protection link and controls node (follow-up referred to as controlling node).As shown in Figure 2, in Ring1, node S1 is for controlling node, with port one 1 direct connected link of the node S1 ring protection link that is Ring1.In Ring2, node S6 is for controlling node, with port 62 direct connected links of the node S6 ring protection link that is Ring2.
When the link of ether multi-ring network is all intact (normal condition), the control node of ring and subring blocks it from the protected data forwarding capability of port, prevents that protected data is repeated to forward and formation broadcast storm.As shown in Figure 2; node S1 in Ring1 has blocked the protected data forwarding capability of port one 1; node S6 in Ring2 has blocked the protected data forwarding capability of port 62, and the communication path of network B and network A is: network B ← → node S2 ← → node S3 ← → node S5 ← → network A.
When the link of ether multi-ring network breaks down, if faulty link is not protection link, control node and open the protected data forwarding capability from port, and each node also needs refresh address to transmit, between network, communication is according to new path transmission.As shown in Figure 3, link <S2 on ring Ring1, there is fault in S3>, node S2 detects after link failure, the data retransmission function of port blocked 22, and notifying other node links that fault has occurred, node S1 (control node) receives after signalling trouble, opens the protected data forwarding capability of port one 1; In addition, each node on Ring1 also wants refresh address to transmit, and the communication path that network B and network A are new is: network B ← → node S2 ← → node S1 ← → node S4 ← → node S3 ← → node S5 ← → network A.
Accordingly, when the faulty link in ether multi-ring network recovers, need to recover to switch transmission path when Internet Transmission returns to normal condition.Because transmission path changes, so node also needs to carry out refreshing of addresses forwarding table.
When ether multi-ring network being safeguarded and protect switching, need to propagate a large amount of control messages, these are controlled messages and automatically in protection control channel, are propagating.Automatically protection control channel has two classes, and a class, corresponding to ring, is called the control channel of ring, and the control channel of ring is configured in ring; Another kind of is corresponding to subring, is called the control channel of subring.The control channel of subring comprises part and the tunnel (Virtual Channel) being configured in subring, and so-called tunnel refers to that other network of being configured between interconnection point or other ring (comprising other subring) provide the control channel of the subring of transmission channel for sub-loop protocol message.As shown in Figure 4, it is upper that the control channel of subring Ring2 is not only configured in subring Ring2, but also be configured on ring Ring1; Be configured in the part (dotted line shown in) of ring on Ring1 and be the tunnel that the protocol massages for subring Ring2 provides.Due to the existence of tunnel, the protocol massages of subring can arrive any one node in subring.
When link is switched, node needs refresh address to transmit, and prevents data message (path before link switchover) propagation along wrong path.At present, at ITU-T, G.8032v2 in standard, ether multi-ring network address flush is divided into ring (or claiming main ring) address flush and subring address flush two classes, is described below respectively:
Subring address flush: when subring topology changes, if and only if interconnecting nodes is received with the protocol massages of address flush information and refreshing self addresses forwarding table from subring, this interconnecting nodes is just constructed new address flush agreement (Flush) message, and on the continuous control channel that 3 times this protocol massages is sent to other ring between interconnecting nodes or subring, node in other ring or subring is received after this protocol massages, refreshes addresses forwarding table separately;
Ring (or claiming main ring) address flush: when main ring generation change in topology, the node on main ring need to carry out address flush, and interconnecting nodes does not need to send Flush message to the control channel of subring.
The protection of above-mentioned ether multi-ring network and address flush scheme can normally be used under normal conditions, and still, if main ring generation multipoint fault, the so above-mentioned protection scheme of mentioning will have problems, specific as follows:
As shown in Figure 2, in trouble-free situation, the control node S1 of main ring Ring1 blocks the protected data forwarding capability of 11 ports, and the control node S6 of subring Ring2 blocks the protected data forwarding capability of 62 ports.Communication path between network B and network A is: network B ← → node S2 ← → node S3 ← → node S5 ← → network A; As shown in Figure 3, link <S2, there is fault in S3>, the control node S1 of Ring1 opens the protected data forwarding capability of 11 ports, and the communication path between network B and network A is: network B ← → node S2 ← → node S1 ← → node S4 ← → node S3 ← → node S5 ← → network A; As shown in Figure 5; basic uplink <S3 at Fig. 3; there is again fault in S4>; due to link <S3; S4> belongs to main ring Ring1 (returning Ring1 protection), and the control node S6 of subring Ring2 can not open protected data forwarding capability from port 62.Therefore, the communication between network B and A is interrupted.
Known by above-mentioned analysis, when two main ring links between the interconnecting nodes of subring all break down, existing ITU-T protection scheme G.8032v2 will go wrong.Therefore,, for addressing the above problem, need to provide a kind of protection scheme of new ether multi-ring network.
In addition, when proposing a kind of protection scheme of new ether multi-ring network, also need to consider the problem that prevents that " super ring " occurs.So-called " super ring " is as shown in Fig. 6 (a) and Fig. 6 (b); in trouble-free situation; the control node S1 of main ring Ring1 blocks it from the protected data forwarding capability of port (port one 1); the control node S6 of subring Ring2 blocks it from the protected data forwarding capability of port (port 62), and the control node S8 of subring Ring3 blocks it from the protected data forwarding capability of port (port 82).As the link <S1 of main ring Ring1, S2> and <S3, when S4> breaks down, the control node S1 of main ring Ring1 opens the protected data forwarding capability of port one 1; Subring Ring2 and Ring3 open it and control node from the protected data forwarding capability of port for ensureing the connectedness of looped network.Thereby, this multi-ring network has formed " a super ring " as shown in Fig. 6 (b), and the forward-path of its data message is (in figure shown in four-headed arrow): node S8 ← → node S1 ← → node S4 ← → node S6 ← → node S5 ← → node S3 ← → node S2 ← → node S7 ← → node S8.
Data message can form broadcast storm in " super ring ", and therefore the performance of grievous injury network, when proposing a kind of protection scheme of new ether multi-ring network, also needs to avoid the appearance of " super ring ".
Summary of the invention
In view of this; main purpose of the present invention is to provide the guard method of ether multi-ring network and the interconnecting nodes under a kind of multipoint fault; when guaranteeing that two main ring links between interconnecting nodes all break down, the control node of subring can be opened the protected data forwarding capability from port.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the ether multi-ring network guard method under a kind of multipoint fault, the method comprises:
Two interconnecting nodes that match in subring mutually send healthy (HL) frame of link on main ring control channel, and move healthy timer (HTR);
Overtime and while not receiving HL frame at HTR, described interconnecting nodes starts relatively timer (CTR), and on described main ring control channel, periodically send relatively (CP) frame, in described CP frame, carry the control channel sign (RC_ID) that described interconnecting nodes connects subring;
Receive the interconnecting nodes of CP frame is connected subring by the RC_ID carrying in described CP frame RC_ID with self and compare, and according to comparative result, determine whether to trigger with CTR the address flush and the protected data forwarding capability that self are connected in subring and open.
Describedly according to comparative result and CTR, determine whether to trigger the address flush and the protected data forwarding capability that self are connected in subring and open, be specially:
If the value of the RC_ID in CP frame is greater than the value of the RC_ID of the interconnecting nodes connection subring that receives described CP frame, when CTR is overtime, receive the interconnecting nodes of CP frame the Status Flag of self (ST) is put to 1, refresh the addresses forwarding table of self, and periodically send signalling trouble (SF) message to subring control channel, with the node triggering in subring, refresh addresses forwarding table separately, and trigger the protected data forwarding capability of control node open ring protection link (RPL) adjacent port in subring;
Otherwise the interconnecting nodes that receives CP frame stops sending CP frame, and stop CTR.
The method further comprises:
If described interconnecting nodes was received HL frame before HTR is overtime, described HTR is set to 0;
If described interconnecting nodes was received HL frame before CTR is overtime, described HTR and CTR are set to 0.
After HTR sets to 0, the method further comprises:
Described interconnecting nodes reads the value of ST, if the value of ST is 0, does not process; If the value of ST is 1, ST is set to 0, block described interconnecting nodes be positioned at subring from port, to periodically sending without request (NR) message in subring, and stop sending SF message.
After described interconnecting nodes periodically sends NR message in subring, the method further comprises:
Control node in described subring is received after NR message, start waiting timer (WTR), and when described WTR is overtime, the protected data forwarding capability that blocks RPL adjacent port, refresh the addresses forwarding table of self, on the control channel of described subring, periodically send NR (RB) message; Other nodes in described subring are received after described NR (RB) message, open port blocked separately, and refresh addresses forwarding table separately.
The present invention also provides a kind of interconnecting nodes, comprising:
HL frame transceiver module, sends HL frame for the interconnecting nodes to pairing on main ring control channel, and moves HTR; Also for receiving the HL frame from the interconnecting nodes of pairing;
CP frame transceiver module, for overtime at HTR and while not receiving HL frame, start CTR, and periodically send CP frame on described main ring control channel, carries the RC_ID that described interconnecting nodes connects subring in described CP frame; Also for receiving the CP frame from other interconnecting nodes from main ring control channel;
Processing module; for when receiving CP frame; the RC_ID that the RC_ID and interconnecting nodes that carry in described CP frame is connected self to subring compares, and according to comparative result and CTR, determines whether to trigger address flush and the protected data forwarding capability that interconnecting nodes is connected in subring and open.
Described processing module is further used for, according to comparative result, the value of RC_ID in CP frame is greater than the value of the RC_ID of the interconnecting nodes connection subring that receives described CP frame, and when CTR is overtime, the ST of described interconnecting nodes is put to 1, refresh the addresses forwarding table of described interconnecting nodes, and periodically send SF message to subring control channel, with the node triggering in subring, refresh addresses forwarding table separately, and trigger the protected data forwarding capability of the control node unlatching RPL adjacent port in subring;
When the value of the RC_ID in CP frame is less than the interconnecting nodes that receives described CP frame and connects the value of RC_ID of subring, stop sending CP frame, and stop CTR.
Described processing module is further used for, and when described HL frame transceiver module was received HL frame before HTR is overtime, described HTR is set to 0; Or, when described HL frame transceiver module was received HL frame before CTR is overtime, described HTR and CTR are set to 0.
Described processing module is further used for, and after HTR sets to 0, reads the value of ST, if the value of ST is 0, does not process; If the value of ST is 1, ST is set to 0, block described interconnecting nodes be positioned at subring from port, in subring, periodically send NR message, and stop sending SF message.
The guard method of ether multi-ring network and interconnecting nodes under a kind of multipoint fault provided by the present invention are mutually sent healthy (HL) frame of link, and move healthy timer (HTR) on main ring control channel by two interconnecting nodes that match in subring; Overtime and while not receiving HL frame at HTR, interconnecting nodes starts relatively timer (CTR), and on main ring control channel, periodically send relatively (CP) frame, in this CP frame, carry the control channel sign (RC_ID) that this interconnecting nodes connects subring; The interconnecting nodes that receives CP frame is connected the RC_ID carrying in CP frame subring RC_ID with self compares, and according to comparative result, determines whether to trigger the address flush and the protected data forwarding capability that self connect in subring and open.By the present invention, while having guaranteed that two main ring links between interconnecting nodes all break down, the control node of subring can be opened the protected data forwarding capability from port; In addition, the present invention has not only effectively avoided the appearance of " super ring ", also helps the performance that improves ether multi-ring network.
Accompanying drawing explanation
Fig. 1 is the structure chart of ether multi-ring network in prior art;
Fig. 2 is the data retransmission schematic diagram under ether multi-ring network non-failure conditions in prior art;
Fig. 3 is the ether multi-ring network schematic diagram that the protection of data flow in situation switches that breaks down in prior art;
Fig. 4 is the schematic diagram of subring control channel in prior art;
Fig. 5 is the schematic diagram of ether multi-ring network generation multipoint fault in prior art;
Fig. 6 (a) forms the topological schematic diagram one of super ring in prior art;
Fig. 6 (b) forms the topological schematic diagram two of super ring in prior art;
Fig. 7 is the flow chart of the ether multi-ring network guard method under a kind of multipoint fault of the present invention;
Fig. 8 (a) is the link switchover schematic diagram one during main ring multipoint fault in the embodiment of the present invention one;
Fig. 8 (b) is the link switchover schematic diagram two during main ring multipoint fault in the embodiment of the present invention one;
Fig. 8 (c) is the link switchover schematic diagram three during main ring multipoint fault in the embodiment of the present invention one;
Fig. 9 (a) is the schematic diagram one of subring inversion recovery in the embodiment of the present invention two;
Fig. 9 (b) is the schematic diagram two of subring inversion recovery in the embodiment of the present invention two;
Figure 10 is the composition structural representation of a kind of interconnecting nodes of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
When guaranteeing that two main ring links between interconnecting nodes all break down; the control node of subring can be opened the protected data forwarding capability from port; the invention provides the ether multi-ring network guard method under a kind of multipoint fault, be applied to the scene of a plurality of subring access main rings shown in Fig. 6 (a).Core concept of the present invention is: two interconnecting nodes that match in subring mutually send healthy (HL, the Health Link) frame of link on main ring control channel, and move healthy timer (HTR, Health Timer); Overtime and while not receiving HL frame at HTR, interconnecting nodes starts relatively timer (CTR, Compare Timer), and periodically send and compare (CP on main ring control channel, Compare) frame, carries the control channel sign (RC_ID) that interconnecting nodes connects subring in this CP frame; The interconnecting nodes that receives CP frame is connected the RC_ID carrying in CP frame subring RC_ID with self compares, and according to comparative result, determines whether to trigger the address flush and the protected data forwarding capability that self connect in subring and open, and is specially:
If the value of the RC_ID in CP frame is greater than the value of the RC_ID of the interconnecting nodes connection subring that receives CP frame, when CTR is overtime, receive the interconnecting nodes of CP frame the Status Flag of self (ST) is put to 1, refresh the addresses forwarding table of self, and periodically send signalling trouble (SF) message to subring control channel, with the node triggering in subring, refresh addresses forwarding table separately, and trigger the protected data forwarding capability of control node open ring in subring protection link (RPL, Ring Protection Link) adjacent port;
Otherwise the interconnecting nodes that receives CP frame stops sending CP frame, and stop CTR.
The value that defines ST in the present invention is 1 expression " protection that causes the subring of this interconnecting nodes connection due to multipoint fault is switched "; the value of ST is 0 expression " subring that this interconnecting nodes connects is not switched because protection occurs multipoint fault ", and the value of ST is non-zero is 1.Certainly, in practical application in order to represent that respectively fault and normal ST also can adopt other to be worth to define.
Based on above-mentioned thought, below in conjunction with Fig. 7, the ether multi-ring network guard method under a kind of multipoint fault of the present invention is described in detail, the method comprises the following steps:
Step 706～707, when this interconnecting nodes receives CP frame, read CP frame RC_ID value and the value of this RC_ID is compared with the value that this interconnecting nodes is connected the RC_ID of subring, judge that whether the value of RC_ID of CP frame larger than the value of the RC_ID of this subring, if so, proceed to step 708; Otherwise, proceed to step 709.
Step 712, this interconnecting nodes judges whether the ST of self is 1, if so, proceeds to step 713; Otherwise, do not process.
ST is that the subring that this interconnecting nodes of 1 expression connects is switched because protection occurs multipoint fault, and in step 711, receive that HL frame shows that the multipoint fault of main ring is current and has at least one to eliminate, now need to carry out the inversion recovery (subsequent step 713～714 is the inversion recovery process of link) of corresponding subring link; ST is that 0 expression link is normal operating conditions before, and in step 711, receives that HL frame shows that link is still normal, therefore without doing other processing.
It is to be noted, in above-mentioned operating process, if interconnecting nodes is received HL frame (show that link eliminated fault between CTR is overtime) before CTR is overtime, this interconnecting nodes need to all set to 0 HTR and CTR so, then according to step 712 and follow-up flow performing thereof.
In conjunction with specific embodiments the ether multi-ring network guard method under above-mentioned multipoint fault is further illustrated again below.Link switchover embodiment when embodiments of the invention one are main ring multipoint fault.
As shown in Fig. 8 (a); in trouble-free situation; the control node S1 of main ring Ring1 blocks it from the protected data forwarding capability of port (port one 1); the control node S6 of subring Ring2 blocks it from the protected data forwarding capability of port (port 62), and the control node S8 of subring Ring3 blocks it from the protected data forwarding capability of port (port 82).Interconnecting nodes S3 and the S4 of subring Ring2 send HL frame mutually, and start HTR; Interconnecting nodes S1 and the S2 of subring Ring3 send HL frame mutually, and start HTR.
For another example shown in Fig. 8 (b); the link <S1 of main ring Ring1; S2> and <S3; there is fault in S4>; the control node S1 of main ring Ring1 opens the protected data forwarding capability of port one 1, and node S1, S2, S3 and S4 block the adjacent port of faulty link.The interconnecting nodes S3 of subring Ring2 can not receive the HL frame that interconnecting nodes S4 sends, after HTR on interconnecting nodes S3 is overtime, interconnecting nodes S3 starts CTR, and periodically sending CP frame to the control channel of main ring Ring1, the control channel with subring Ring2 in the RC_ID field of CP frame identifies.Disposition for interconnecting nodes S1, S2 and S4 is identical with interconnecting nodes S3, repeats no more herein.
When interconnecting nodes S3 receives the CP frame that interconnecting nodes S2 sends, interconnecting nodes S3 compares the control channel sign of the value of the RC_ID field of CP frame and subring Ring2, find that the value of RC_ID field of CP frame is little, thereby interconnecting nodes S3 does not operate.Same, when interconnecting nodes S4 receives the CP frame that interconnecting nodes S1 sends, interconnecting nodes S4 compares the control channel sign of the value of the RC_ID field of CP frame and subring Ring2, find that the RC_ID field value of CP frame is little, thereby interconnecting nodes S4 does not operate yet.
When interconnecting nodes S1 receives the CP frame that interconnecting nodes S4 sends, interconnecting nodes S1 compares the control channel sign of the value of the RC_ID field of CP frame and subring Ring3, the RC_ID field value of finding CP frame is large, thereby interconnecting nodes S1 stops CTR, and stops sending CP frame.Same, when interconnecting nodes S2 receives the CP frame that interconnecting nodes S3 sends, interconnecting nodes S2 compares the control channel sign of the value of the RC_ID field of CP frame and subring Ring3, finds that the RC_ID field value of CP frame is large, thereby interconnecting nodes S2 stops CTR, and stop sending CP frame.
For another example shown in Fig. 8 (c), after the CTR of node S3 or S4 timer expiry, this node puts 1 by ST, refreshes the addresses forwarding table of self, and periodically sends SF message on the control channel of subring Ring2.Other nodes of subring Ring2 refresh addresses forwarding table separately after receiving SF message, wherein, control the protected data forwarding capability that node S6 also will open port 62.
Embodiments of the invention two are the embodiment of subring inversion recovery.
Above-described embodiment one continues; as shown in Fig. 9 (a); link <S3; S4> fault disappears; interconnecting nodes S3 and S4 can receive mutually the HL frame that the other side sends; interconnecting nodes S3 and S4 set to 0 HTR, port blocked 33 and 43 protected data forwarding capability, and on the control channel of subring Ring2, periodically send NR message.
For another example shown in Fig. 9 (b), the control node S6 of subring Ring2 receives after NR message, starts WTR.Overtime as WTR, the protected data forwarding capability of control node S6 port blocked 62, refreshes the addresses forwarding table of self, and periodically sends NR (RB) message; Other nodes on subring Ring2 are received after this message, refresh addresses forwarding table separately, and wherein node S3 and S4 also will open respectively the protected data forwarding capability of port 33 and 43.
For realizing the ether multi-ring network guard method under above-mentioned multipoint fault, a kind of interconnecting nodes provided by the present invention, as shown in figure 10, comprising: HL frame transceiver module 100, CP frame transceiver module 200 and processing module 300.HL frame transceiver module 100, sends HL frame for the interconnecting nodes to pairing on main ring control channel, and moves HTR; Also for receiving the HL frame from the interconnecting nodes of pairing.CP frame transceiver module 200, for overtime at HTR and while not receiving HL frame, start CTR, and on main ring control channel, periodically sends CP frame, carries the RC_ID that interconnecting nodes connects subring in CP frame; Also for receiving the CP frame from other interconnecting nodes from main ring control channel.Processing module 300; for when receiving CP frame; the RC_ID that the RC_ID carrying in CP frame and interconnecting nodes is connected self to subring compares, and determines whether to trigger address flush and the unlatching of protected data forwarding capability in interconnecting nodes connection subring according to comparative result, is specially:
According to comparative result, the value of RC_ID in CP frame is greater than the value of the RC_ID of the interconnecting nodes connection subring that receives CP frame, and when CTR is overtime, the ST of interconnecting nodes is put to 1, refresh the addresses forwarding table of interconnecting nodes, and periodically send SF message to subring control channel, with the node triggering in subring, refresh addresses forwarding table separately, and trigger the protected data forwarding capability of the control node unlatching RPL adjacent port in subring;
When the value of the RC_ID in CP frame is less than the interconnecting nodes that receives CP frame and connects the value of RC_ID of subring, stop sending CP frame, and stop CTR.
Preferably, processing module 300 is further used for, and when HL frame transceiver module 100 was received HL frame before HTR is overtime, HTR is set to 0; Or when HL frame transceiver module 100 was received HL frame before CTR is overtime, HTR and CTR are set to 0.And after HTR sets to 0, processing module 300 reads the value of ST, if the value of ST is 0, does not process; If the value of ST is 1, ST is set to 0, block interconnecting nodes be positioned at subring from port, in subring, periodically send NR message, and stop sending SF message.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. the ether multi-ring network guard method under multipoint fault, is characterized in that, the method comprises:
Two interconnecting nodes that match in subring mutually send healthy (HL) frame of link on main ring control channel, and move healthy timer (HTR);
Overtime and while not receiving HL frame at HTR, described interconnecting nodes starts relatively timer (CTR), and on described main ring control channel, periodically send relatively (CP) frame, in described CP frame, carry the control channel sign (RC_ID) that described interconnecting nodes connects subring;
Receive the interconnecting nodes of CP frame is connected subring by the RC_ID carrying in described CP frame RC_ID with self and compare, and according to comparative result, determine whether to trigger with CTR the address flush and the protected data forwarding capability that self are connected in subring and open, be specially:
If the value of the RC_ID in CP frame is greater than the value of the RC_ID of the interconnecting nodes connection subring that receives described CP frame, when CTR is overtime, receive the interconnecting nodes of CP frame the Status Flag of self (ST) is put to 1, refresh the addresses forwarding table of self, and periodically send signalling trouble (SF) message to subring control channel, with the node triggering in subring, refresh addresses forwarding table separately, and trigger the protected data forwarding capability of control node open ring protection link (RPL) adjacent port in subring; Otherwise the interconnecting nodes that receives CP frame stops sending CP frame, and stop CTR.
2. the ether multi-ring network guard method under multipoint fault according to claim 1, is characterized in that, the method further comprises:
If described interconnecting nodes was received HL frame before HTR is overtime, described HTR is set to 0;
If described interconnecting nodes was received HL frame before CTR is overtime, described HTR and CTR are set to 0.
3. the ether multi-ring network guard method under multipoint fault according to claim 2, is characterized in that, after HTR sets to 0, the method further comprises:
Described interconnecting nodes reads the value of ST, if the value of ST is 0, does not process; If the value of ST is 1, ST is set to 0, block described interconnecting nodes be positioned at subring from port, to periodically sending without request (NR) message in subring, and stop sending SF message.
4. the ether multi-ring network guard method under multipoint fault according to claim 3, is characterized in that, after described interconnecting nodes periodically sends NR message in subring, the method further comprises:
Control node in described subring is received after NR message, start waiting timer (WTR), and when described WTR is overtime, the protected data forwarding capability that blocks RPL adjacent port, refresh the addresses forwarding table of self, on the control channel of described subring, periodically send the NR message with protection link obstructions (RB) parameter; Other nodes in described subring are received after the described NR message with protection link obstructions (RB) parameter, are opened port blocked separately, and refresh addresses forwarding table separately.
5. an interconnecting nodes, is characterized in that, comprising:
HL frame transceiver module, sends HL frame for the interconnecting nodes to pairing on main ring control channel, and moves HTR; Also for receiving the HL frame from the interconnecting nodes of pairing;
CP frame transceiver module, for overtime at HTR and while not receiving HL frame, start CTR, and periodically send CP frame on described main ring control channel, carries the RC_ID that described interconnecting nodes connects subring in described CP frame; Also for receiving the CP frame from other interconnecting nodes from main ring control channel;
Processing module, for when receiving CP frame, the RC_ID that the RC_ID and interconnecting nodes that carry in described CP frame is connected self to subring compares, and according to comparative result and CTR, determine whether to trigger address flush and the protected data forwarding capability that interconnecting nodes is connected in subring and open, be specially: the value of the RC_ID in CP frame is greater than the value of the RC_ID of the interconnecting nodes connection subring that receives described CP frame, and when CTR is overtime, the ST of described interconnecting nodes is put to 1, refresh the addresses forwarding table of described interconnecting nodes, and periodically send SF message to subring control channel, with the node triggering in subring, refresh addresses forwarding table separately, and trigger the protected data forwarding capability that control node in subring is opened RPL adjacent port, when the value of the RC_ID in CP frame is less than the interconnecting nodes that receives described CP frame and connects the value of RC_ID of subring, stop sending CP frame, and stop CTR.
6. interconnecting nodes according to claim 5, is characterized in that, described processing module is further used for, and when described HL frame transceiver module was received HL frame before HTR is overtime, described HTR is set to 0; Or, when described HL frame transceiver module was received HL frame before CTR is overtime, described HTR and CTR are set to 0.
7. interconnecting nodes according to claim 8, is characterized in that, described processing module is further used for, and after HTR sets to 0, reads the value of ST, if the value of ST is 0, does not process; If the value of ST is 1, ST is set to 0, block described interconnecting nodes be positioned at subring from port, in subring, periodically send NR message, and stop sending SF message.
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| CN104184639B (en) * | 2014-07-16 | 2018-01-16 | 新华三技术有限公司 | A kind of processing method and equipment of ERPS loops multipoint fault |
| CN113568858B (en) * | 2021-09-23 | 2021-12-17 | 苏州浪潮智能科技有限公司 | Equipment management method, device and storage medium |
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