CN101499949A - Failure recovery processing method in intersected ring network, node and intersected ring network - Google Patents
Failure recovery processing method in intersected ring network, node and intersected ring network Download PDFInfo
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Abstract
The invention discloses a fault recovery processing method in an intersecting ring network, a master node of each Ethernet ring network in the intersecting ring network is allocated with a respective priority, and the method comprises the following steps: a normal polling message with own priority is sent by the intersecting ring network after the normal polling is detected by the master node in a fault state in the intersecting ring network; if the normal polling message with priority sent by other master nodes is received by the master node in the fault state, whether the own priority is higher than the priority in the normal polling message or not is judged, if so, the normal polling message is transmitted; and the master node in the fault state judges whether the normal polling message sent by itself is received in the predetermined time length, if so, a secondary port is blocked. The invention also discloses a master node, a transmission node and the intersecting ring network. The invention can provide an effective fault recovery processing method for the arbitrary topological intersecting ring network.
Description
Technical field
The present invention relates to the ethernet ring network technology, particularly relate to fault recovery processing method in the intersecting ring network, node and intersecting ring network.
Background technology
At present, ethernet ring network is progressively popularized and is used.Fig. 1 is the structural representation of single ethernet ring network.Referring to Fig. 1, in single ethernet ring network, comprise a host node and a plurality of transmission node, host node and each transmission node service data transmission on ethernet ring network are finished the miscellaneous service function.
Because ethernet ring network is a loop network structure, therefore, need prevent to produce loop, thus the broadcast storm of avoiding unknown unicast and broadcasting to be caused in loop cocycle transmission.At present,, exist the technology of comparative maturity to avoid the generation of loop, guarantee the transmission of data for single ethernet ring network.As shown in Figure 1, when single ethernet ring network operate as normal, for data message, the host node that is in good working condition is only opened the master port of self side, and blocks the secondary port of self opposite side, like this, when data message transmission, ethernet ring network then is a chain, and can not produce loop; When link failure of ethernet ring network, host node can switch to malfunction, open port blocked fast, this moment, ethernet ring network still was a chain, thereby communicated with each other between the node that still can guarantee to encircle, and still all can arrive other node from encircling any one node, certainly, when fault recovery, host node can switch back good working condition, and blocks secondary port.
In order to satisfy professional various demands, in the networking of reality is used, often a plurality of ethernet ring networks need be carried out intersecting arbitrarily networking, form intersecting ring network, that is to say, an intersecting ring network can comprise a plurality of ethernet ring networks, the physically corresponding Ethernet topology that annular connects of ethernet ring network, and an intersecting ring network just is made of a plurality of ethernet ring networks that join each other.Fig. 2 is a kind of topological schematic diagram that a plurality of ethernet ring networks intersect the intersecting ring network that forms.Present demand according to business, a kind of metropolitan area network networking model commonly used can be as shown in Figure 2, and, for importance and the level of distinguishing each ethernet ring network in the intersecting ring network, in network configuration shown in Figure 2, represent the ethernet ring network ABCDEFHIA of core/convergence-level to be set to main ring, this main ring has the characteristics of high bandwidth; The part of the converging of other each zones/access network and main ring is formed circlet, and be regarded as attached to the section on the main ring, such as, the Node B of the node V in a zone and W and main ring and C form an ethernet ring network among Fig. 2, as attached to the section BVWC on the main ring.
The networking mode that a plurality of ethernet ring networks intersect can form flexible net topological structure more, thereby provides the business service of enriching more for the user.Because the characteristics of intersecting ring network itself; in intersecting ring network; after one or more link down; may have different host nodes has all carried out the open auxiliary port and has moved to error protection such as malfunction handling; like this; for intersecting ring network; a kind of effective fault recovery treatment mechanism correspondingly just need be provided; behind the link-recovery such as one or more fault; should carry out by which host node in the intersecting ring network fault recovery and handle, could guarantee the unobstructed of loop network link and avoid producing loop.In Fig. 2, have no progeny among link IH and the common link BC and recovery simultaneously, at this moment, need not only to guarantee respectively in the intersecting ring network that each ethernet ring network is a main ring and unobstructed and avoid producing loop attached to each the little loop chain road on the main ring, do not produce loop but also need to guarantee to intersect each the big ring (such as the ring of AIHFEDCWVBA composition) that forms, and need to consider in order to guarantee the unobstructed of all loop network links, the counter-measure that should take etc.
Yet, at present, only exist the fault recovery of single ethernet ring network is handled, for the arbitrary topology mode that a plurality of ethernet ring networks intersect, also do not have a kind of effective fault recovery processing method to guarantee the unobstructed of intersecting ring network link and avoid producing loop.
Summary of the invention
In view of this, main purpose of the present invention is to provide fault recovery processing method, host node, transmission node and intersecting ring network in a kind of intersecting ring network, so that provide effective fault recovery processing method, guarantee the unobstructed of loop network link and avoid producing loop a plurality of crossing ethernet ring network of arbitrary topology.
In order to achieve the above object, technical scheme of the present invention is achieved in that
Fault recovery processing method in the intersecting ring network, this method is applied in the intersecting ring network of the crossing arbitrary topology that forms of a plurality of ethernet ring networks, each ethernet ring network comprises host node and several transmission nodes, and the host node of each ethernet ring network all disposes priority separately in the intersecting ring network; This method comprises:
The host node of malfunction detects whether poll is normal in the intersecting ring network, if then send the poll normal message carry self priority by intersecting ring network;
If the host node of malfunction receives the poll normal message of carrying priority that other malfunction host nodes send, whether the priority of then judging self is higher than the priority in this poll normal message, if then transmit this poll normal message;
The host node of malfunction judges whether receive the poll normal message that self sends in scheduled duration, if then block secondary port.
A kind of host node, this host node are arranged on the ethernet ring network of intersecting ring network, and this host node comprises:
Detecting unit is used for when the place host node is in malfunction, and whether poll is normal to detect the place host node, if then send poll to the fault recovery processing unit and normally notify;
The fault recovery processing unit, be used for after receiving the normal notice of poll, send the poll normal message of carrying place host node priority by intersecting ring network, if monitor the poll normal message of carrying priority that other malfunction host nodes send, whether the priority of then judging the place host node is higher than the priority in this poll normal message, if, then transmit this poll normal message, and judge in scheduled duration, whether to receive the poll normal message that self sends, if receive, then send congestion notification to the port controlling unit;
The port controlling unit is used for after receiving congestion notification, blocks secondary port.
A kind of transmission node, this transmission node are arranged on the ethernet ring network of intersecting ring network, and this transmission node comprises:
The packet sending and receiving unit is used for after a port receives the message of sending the outside, and this message and this reporting port information are transmitted control unit to message;
Message is transmitted control unit, is used for parsing after the message that reports is the poll normal message, and this poll normal message is transmitted from other all of the ports outside the port that receives this poll normal message in control packet sending and receiving unit.
A kind of intersecting ring network comprises a plurality of ethernet ring networks in this intersecting ring network, each ethernet ring network comprises host node and several transmission nodes; And the host node in this intersecting ring network on each ethernet ring network adopts the host node of the invention described above to realize, the transmission node in this intersecting ring network on each ethernet ring network adopts the transmission node of the invention described above to realize.
This shows; intersect in the ring network structure of the arbitrary topology that forms at a plurality of ethernet ring networks; when any one or more fault recovery; the invention provides effective fault recovery processing method; can either guarantee data link unobstructed of all looped networks of intersecting; but also can guarantee not produce loop, thereby provide effective looped network protection mechanism to a plurality of crossing ethernet ring network of arbitrary topology.
Description of drawings
Fig. 1 is the structural representation of single ethernet ring network.
Fig. 2 is a kind of topological schematic diagram that a plurality of ethernet ring networks intersect the intersecting ring network that forms.
Fig. 3 carries out the flow chart that fault recovery is handled to the intersecting ring network of arbitrary topology in embodiments of the present invention.
Fig. 4 is the schematic diagram of a kind of intersecting ring network in the embodiment of the invention.
Fig. 5 is a kind of schematic diagram of intersecting ring network generation Single Point of Faliure in the embodiment of the invention.
Fig. 6 is a kind of schematic diagram of intersecting ring network generation multiple spot fault in the embodiment of the invention.
Fig. 7 is a kind of schematic diagram of some fault recoveries in the intersecting ring network multiple spot fault in the embodiment of the invention.
Fig. 8 is a kind of schematic diagram that intersecting ring network multiple spot fault is recovered simultaneously in the embodiment of the invention.
Fig. 9 is the basic structure schematic diagram of host node in embodiments of the present invention.
Figure 10 is the basic structure schematic diagram of transmission node in embodiments of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.
The present invention proposes a kind of in the intersecting ring network of arbitrary topology fault recovery processing method, this method is applied in the intersecting ring network of the crossing arbitrary topology that forms of a plurality of ethernet ring networks, each ethernet ring network comprises host node and several transmission nodes, the host node of each ethernet ring network all disposes priority separately in the intersecting ring network, this method comprises: the host node of malfunction detects whether poll is normal in the intersecting ring network, if then send the poll normal message carry self priority by intersecting ring network; If the host node of malfunction receives the poll normal message of carrying priority that other malfunction host nodes send, whether the priority of then judging self is higher than the priority in this poll normal message, if then transmit this poll normal message; The host node of malfunction judges whether receive the poll normal message that self sends in scheduled duration, if then block secondary port.
Fig. 3 carries out the flow chart that fault recovery is handled to the intersecting ring network of arbitrary topology in embodiments of the present invention.Referring to Fig. 3, this flow process specifically may further comprise the steps:
Step 301: in the intersecting ring network of the arbitrary topology that a plurality of ethernet ring networks intersect to form,, and identify and corresponding priorities for each host node is provided with for each ethernet ring network is provided with host node.
Fig. 4 is the schematic diagram of a kind of intersecting ring network in the embodiment of the invention.Referring to Fig. 4, by the processing of this step 301, for ethernet ring network R1, it is A that its host node is set, and this host node A is designated ID1, and corresponding priorities is LEVEL1; For ethernet ring network R2, it is E that its host node is set, and this host node E is designated ID2, and corresponding priorities is LEVEL2; For ethernet ring network R3, it is G that its host node is set, and this host node G is designated ID3, and corresponding priorities is LEVEL3.Wherein, the priority of LEVEL1, LEVEL2 and LEVEL3 reduces successively.
It will be appreciated by persons skilled in the art that for intersecting ring network shown in Figure 4 all nodes on all ethernet ring networks belong to same intersecting ring network territory.This intersecting ring network can be identified by the ID of integer representation, a configuration set identical territory ID and control VLAN, and the network equipment colony that is interconnected constitutes an intersecting ring network.And, when on each ethernet ring network, host node being set, two ports of this host node on ring are added control VLAN, and master/secondary port is set (if do not do appointment, what then the selecting side slogan was little is master port), when the ethernet ring network operate as normal, host node blocks secondary port.
Step 302: in intersecting ring network,, the affiliated host node of each port of this node is set according to the ethernet ring network at each node place.
Here, during host node under each port of node is set, if this port only is positioned on the ethernet ring network, so, the host node under this port is exactly the host node on the ethernet ring network at its place; If this port is positioned on a plurality of ethernet ring networks simultaneously, so, the host node under this port is exactly in a plurality of host nodes of these a plurality of ethernet ring networks, the host node that priority is the highest.Such as, referring to Fig. 4, port Ca (being that node C goes up the port that connects link CA) for node C, this port Ca only is arranged in an ethernet ring network R1, therefore, host node under this port Ca is exactly the host node A (ID1 of ethernet ring network R1, LEVEL1), and for the port Cd of node C (being that node C goes up the port that connects link CD), this port Cd is arranged in ethernet ring network R1 and ethernet ring network R2 simultaneously, and because the priority LEVLE1 of the host node A of ethernet ring network R1 is higher than the priority LEVEL2 of the host node E of ethernet ring network R2, therefore, host node under this port Cd be exactly ethernet ring network R1 host node A (ID1, LEVEL1).Wherein, particularly, the mode of the host node under the sign port is: the sign of this port and priority are set to the sign and the priority of the described host node of this port, such as, host node under the port Cd be host node A (ID1, LEVEL1), so, this port Cd is designated ID1, and priority is LEVEL1.
Step 303: in intersecting ring network, after one or more link down, corresponding host node carries out error protection to be handled, and the secondary port and the transmission of move to fault (Failed) state, opening self refresh and transmit message.
Here; after the link down in the intersecting ring network; in order to guarantee the unobstructed of intersecting ring network link and not produce loop; specifically carrying out error protection by the host node of which or which correspondence in the intersecting ring network handles; the applying date that can the REFERENCE TO RELATED people proposes is on January 31st, 2008, and denomination of invention is the application for a patent for invention of " intersecting ring network guard method, node and the intersecting ring network of arbitrary topology ".
Step 304: host node regularly sends health detection (HELLO) message that carries self identification, state information and sequence of message number on intersecting ring network.
Here, if a host node is in good working condition, so, the state information in the HELLO message that this host node sends then is the information of good working condition; If a host node is in the Failed state, so, the state information in the HELLO message that this host node sends then is the information of Failed state.
Because in intersecting ring network, during any link failure recovery, adjacent node can detect this fault recovery, if this node directly will revert to normally with the port of this direct link connection and E-Packet, so, then may occur owing to host node does not also block the loop that secondary port causes, therefore, common processing at present is, node detection can not revert to normal condition with direct-connected port immediately, but at first should be set to pre-obstruction (Pre-forwarding) state by direct-connected port after this fault recovery, the port that is in pre-obstruction (Pre-forwarding) state can not send datagram, and can only send protocol massages.
Can obtain thus, when the fault recovery on the intersecting ring network, at any one intra-node, its port can have the port (non-fault recovery direct link connection port) of good working condition or the port (fault recovery direct link connection port) of pre-blocked state.For any one node, if the state of this node middle port is a good working condition, so, this node is after this port receives the HELLO message, and other all normal ports send this HELLO message from self.And for the node that has pre-blocked state port, how it sends the HELLO message, then needs special consideration, otherwise, then may cause producing on the intersecting ring network loop.Such as; referring to Fig. 5; in intersecting ring network; the link CD of two ethernet ring networks interrupts (in other embodiments of the invention; intersecting ring network among Fig. 5 can be divided into main ring ACDBA and attached on the main ring the section CEFD); host node A carries out error protection to be handled, and moves to the Failed state and has opened secondary port.Afterwards, it is normal that link CD recovers, and the port Cd of node C and the port Dc of node D are all moved to pre-blocked state, at this moment, if host node A does not also detect this fault recovery by the HELLO message, its secondary port still is in open mode, and so, the HELLO message that host node E sends then can form loop on CADBC, therefore, in embodiments of the present invention, produce, comprise that the node of pre-blocked state port then needs the processing of execution in step 305 to step 307 for fear of loop.
Step 305: in intersecting ring network, if the port of node pre-blocked state from self receives the HELLO message, so, this node judges that the state information in the HELLO message that receives is the information of good working condition or the information of Failed state, if the information of good working condition, so, execution in step 306, if the information of Failed state, execution in step 307.
Step 306: this node is no longer transmitted received HELLO message, directly abandons execution in step 308.
Carry out this step, what carry in the HELLO message is the information of good working condition, therefore, can determine that the host node that sends this HELLO message is in good working condition, that is to say, there is path on the ethernet ring network that this host node is controlled, and this path is without present node (comprising pre-blocked state port) place link, even present node is not transmitted this HELLO message, the host node of this good working condition also can receive the HELLO message that oneself sends, therefore, on intersecting ring network, produce loop, and reducing the message amount of transmitting, in this step, present node directly abandons the HELLO message that receives from pre-port blocked.
Step 307: this node judges whether record the host node sign of carrying in this HELLO message and sequence of message number in self, if, then turn to execution in step 306, otherwise, write down the host node sign of carrying in this HELLO message and sequence of message number, and by self other all normal ports send this HELLO message, execution in step 308.
The above-mentioned forwarding processing procedure that has illustrated after receiving the HELLO message on the port of the pre-blocked state of node.On intersecting ring network, the process that host node is transmitted the HELLO message that receives comprises: this host node is used as the HELLO message that receives as data message and is handled, promptly, if the secondary port block of this host node, then the HELLO message that receives from master port is not transmitted from secondary port, if the secondary port of this host node is opened, then the HELLO message that receives from master port can be transmitted from secondary port; And the HELLO message that host node is received from secondary port also no longer carries out any forwarding to be handled, and directly abandons.In addition, on the intersecting ring network, after any one transmission node receives the HELLO message from self port, if this port is pre-blocked state port, then handle according to above-mentioned steps 305 to 307 described processes, if this port is the port of normal forwarding state, then transmit this HELLO message by other all of the ports.
Step 308: in intersecting ring network, each host node that is in the Failed state judges whether receive the HELLO message that self sends in scheduled duration, if then execution in step 309, otherwise, keep the Failed state, return step 304.
Need to prove, in existing single ethernet ring network, after the host node that is in the Failed state receives the HELLO message that self sends, can determine that then the fault in the ethernet ring network recovers, therefore, directly comprise the fault recovery processing of blocking secondary port.
And in embodiments of the present invention, in scheduled duration, receive the HELLO message that self sends if be in the host node of Failed state, so, then be illustrated in the link that interrupts on this host node institute control ring and recovered normal, but this moment, (a plurality of ethernet ring networks intersect to consider the characteristics of intersecting ring network, there are public node and link between the different ethernet ring networks), in order to guarantee the unobstructed of each ethernet ring network data link in the intersecting ring network, and, do not produce loop, this host node can not directly block secondary port according to the processing mode of monocycle, this host node also needs in execution in step 309 and the subsequent step process of holding consultation with other host nodes (promptly the host node of open auxiliary port) that is in the Failed state, thereby determines that the host node which is in the Failed state by comprises the fault recovery processing of blocking secondary port.
Step 309: this host node that is in the Failed state sends normal (POLLING_UP) message of the poll that carries self identification and priority on intersecting ring network.
After this step, for each transmission host node on the intersecting ring network, referring to Fig. 3, execution in step 310 and follow-up respective process when it receives the POLLING_UP message; Be in the host node of good working condition for each, referring to Fig. 3, execution in step 311 and follow-up respective process when it receives the POLLING_UP message; Be in the host node of Failed state for each, referring to Fig. 3, execution in step 312 and follow-up respective process when it receives the POLLING_UP message.
Step 310: in intersecting ring network, after each transmission node receives the POLLING_UP message from self a port, all send this POLLING_UP message, execution in step 318 by self other all of the port.
Step 311: in intersecting ring network, each is in the host node of good working condition and the POLLING_UP message that receives is handled execution in step 318 as data message.
In this step, the process that the POLLING_UP message is handled as data message comprises: after the host node that is in good working condition receives the poll normal message from the port except that secondary port, because secondary port block, therefore, no longer transmit from secondary port, and, do not transmit from the poll normal message that secondary port receives, can directly abandon.
Step 312: in intersecting ring network, after each host node that is in the Failed state receives the POLLING_UP message that other host nodes send, the priority of carrying in the priority of comparison self and this message, if the priority height of self, then execution in step 313, if the priority of self is low, then execution in step 314.
In intersecting ring network; when the fault that takes place influences the ethernet ring network of a plurality of host node controls simultaneously; be to decide according to the priority of host node height order which host node to carry out error protection by and handle; such as; fault in intersecting ring network influences the ethernet ring network that the host node of the host node of limit priority and time high priority is controlled simultaneously; so, under the condition that can play error protection, be carry out error protection such as open auxiliary port to handle by the host node of limit priority.According to this principle, in embodiments of the present invention, when carrying out the fault recovery processing, then should at first carry out the fault recovery processing by minimum host node by the host node medium priority that fault recovery influenced, therefore, in this step, if be in the priority height that the host node of Failed state compares the host node that carries in the priority ratio POLLING_UP message of self, so, then illustrate self not to be current host node that need to carry out fault recovery, should execution in step 313 in the processing of the POLLING_UP message that sends of the relatively low host node of forwarding priority; If it is low to compare the priority of the host node that carries in the priority ratio POLLING_UP message of self, so, then the host node of this POLLING_UP message of explanation transmission is not the current host node that needs to carry out fault recovery, therefore, should not transmit this POLLING_UP message, execution in step 314.
Because for each host node has disposed sign (ID) and priority (LEVEL), wherein, for the ID of different host nodes configuration different, the priority that is different host node configurations then might be identical, therefore, in this step, if the value of two priority (LEVEL) relatively is identical, so, the ID of other host nodes in the further more received POLLING_UP message of host node and the 1D of self if the ID of self number little, then think self priority height, if the ID of self number big, think that then the priority of self is low.
Step 313: on other all of the ports except that receiving port, send this POLLING_UP message, execution in step 315.
Step 314: the POLLING_UP message that other host nodes that receive from Primary port and secondary port send is all no longer transmitted.
The host node of step 315:Failed state judges whether to receive the POLLING_UP message that self sends in scheduled duration, if then execution in step 316, otherwise, keep the Failed state, turn to execution in step 304.
Here,, so, illustrating that then this host node should carry out the secondary port of follow-up obstruction and handle in interior fault recovery if the host node of Failed state receives the POLLING_UP message that self sends in scheduled duration, otherwise, should not carry out.
Step 316: the host node of this Failed state starts the delay timer that sets in advance, whether monitoring receives refreshing that other host nodes send and transmits (RING_UP_FLUSH_FDB) message before delay timer is overtime, if, execution in step 317 immediately then, otherwise, execution in step 317 again behind the latency delays timer expiry.
Here, the host node of Failed state is determining to carry out the secondary port of obstruction after interior fault recovery is handled, do not carry out immediately, if be because in intersecting ring network, there are many faulty links to recover, so, unobstructed and do not produce loop for the link that guarantees intersecting ring network, may need the host node of a plurality of Failed states all to block fault recovery processing such as secondary port, therefore, these a plurality of host nodes need be controlled the time of blocking secondary port, otherwise, if one of them host node blocks secondary port too early, then can cause other host nodes that should carry out the fault recovery processing can't receive the POLLING_UP message that self sends, handle and do not carry out fault recovery.Therefore, the host node of Failed state can not be carried out fault recovery immediately and handle, refreshing of receiving that other host nodes send transmit message or by the time delay timer overtime after, think that just other host nodes that should carry out the fault recovery processing have received the POLLING_UP message of its transmission, at this moment, then can carry out and comprise that the fault recovery of blocking secondary port handles.
Step 317: carry out fault recovery and handle, comprise and move to good working condition, and block secondary port, and send and carry refreshing of self identification and priority and transmit message.
Step 318: in intersecting ring network, each node from self a port receive refresh transmit message after, all other all normal ports send this and refresh and transmit message by self, the priority of priority in this message and the host node under self each port relatively simultaneously, if the priority of the host node under the port is not less than the priority in this message, then satisfying under the condition of predetermined policy, refreshing transmit (FDB) of this port.
In this step, be the priority of the host node under port when being not less than priority in this message, consider whether to need to refresh transmit (FDB) of this port, its former because:
In intersecting ring network; if the ethernet ring network (common node that intersects such as two ethernet ring networks breaks down) of a plurality of host node controls of the fault effects that takes place; so; be to carry out the open auxiliary port by the highest host node of all host node medium priorities of good working condition; transmission refreshes error protections such as transmitting message and handles; therefore; node receive refresh transmit message after; if when the priority of host node equals priority in this message under port; illustrate that then the host node under this port sends the host node that message is transmitted in current refreshing just; therefore; should refresh transmitting of this port; if the priority of the host node under port is during greater than the priority in the message; illustrate that then transmitting of this port transmission message foundation may be subjected to sending the current influence that refreshes the ethernet ring network topological structure that the host node of transmitting message controls, and also should consider whether to refresh transmitting of this port.Therefore, in embodiments of the present invention, specifically whether need transmitting of refresh port to decide according to predefined strategy.Such as, as long as predefined strategy just refreshes for satisfying priority conditions, so, node priority of host node under judging port directly refreshes transmitting of this port after being not less than and refreshing the priority of transmitting in the message; For another example, predefined strategy refreshes after message is transmitted in identical refreshing for receiving from two ports, so, node judge priority when host node under the front port be not less than refresh the priority of transmitting in the message after, also to determine whether to have received that from another port of self identical refreshing transmit message, if then refresh transmitting when front port.
The act instantiation illustrates and utilizes above-mentioned processing shown in Figure 3 below.
Such as, in intersecting ring network shown in Figure 5, if a link CD interrupts, host node A open auxiliary port is also moved to the Failed state.When link CD recovered, port Cd and Dc were in pre-obstruction (Pre-forwarding) state.Host node A can pass through the Pre-forwarding port from the HELLO message that master port sends, and is received by the secondary port of A.According to above-mentioned processing shown in Figure 3, then A will send the POLLING_UP message, and this message also can pass through the Pre-forwarding port, thereby is received by A.A is with the start delay timer, and the overtime back of delay timer is such as after being 1S, and host node A blocks secondary port, switches to good working condition, and sends the RING_UP_FLUSH_FDB message.Node C and D receive that this message will decontrol the Pre-forwarding port, make them be in normal forwarding state.Here E and F also will receive the RING_UP_FLUSH_FDB message, but their the priority ratio priority of messages of all of the port is little, so need not refresh the FDB table.
For another example, in intersecting ring network shown in Figure 6, if link CD and BD interrupt, in order to guarantee the unobstructed of each loop chain road on the intersecting ring network, host node A, E decontrol secondary port respectively, are in the Failed state.When CD recovered, port Cd and Dc were in the Pre-forwarding state.A can't be received by the secondary port of oneself from the HELLO message that master port sends, and will keep the Failed state.E then can be received by the secondary port of oneself from the HELLO that master port sends, and then E will send the POLLING_UP message, and this message also can pass through the Pre-forwarding port, thereby is received by E.E is with the start delay timer, and secondary port is blocked such as after being 1S in the overtime back of delay timer, switches to good working condition, and sends the RING_UP_FLUSH_FDB message.Node C and D receive that this message will decontrol the Pre-forwarding port, make them be in normal forwarding state.
And for example, in intersecting ring network shown in Figure 7, if link CD and BD interrupt, in order to guarantee the unobstructed of each loop chain road on the intersecting ring network, host node A, E decontrol secondary port respectively, are in the Failed state.When BD recovered, port Bd and Db were in the Pre-forwarding state.A can receive from the secondary port of oneself from the HELLO message that master port sends, and E also can be received by the secondary port of oneself from the HELLO message that master port sends.Host node A and E will send the POLLING_UP message from master port, the POLLING_UP message that A sends soft forwarding on E, because the priority of carrying in the message is higher, this message is at the secondary port block of E, and the secondary port of A can't be received the POLLING_UP message that oneself sends; The POLLING_UP message that E sends soft forwarding on A, because the priority of carrying in the message is lower, this message allows to pass through at the secondary port of A, the secondary port of E is received the message that oneself sends.E is with the start delay timer, and secondary port is blocked such as after being 1S in the overtime back of delay timer, switches to good working condition, and sends the RING_UP_FLUSH_FDB message.And A will remain on the Failed state.
And for example, in intersecting ring network shown in Figure 8, if link CD and BD interrupt, in order to guarantee the unobstructed of each loop chain road on the intersecting ring network, host node A, E decontrol secondary port respectively, are in the Failed state.When CD, BD recovered simultaneously, port Cd, Dc, Bd and Db were in the Pre-forwarding state.A can be received by the secondary port of oneself from the HELLO message that master port sends, and E also can be received by the secondary port of oneself from the HELLO message that master port sends.Host node A and E will send the POLLING_UP message from master port, and the POLLING_UP message that A sends is finally received by the secondary port of oneself by A-C-D-B-A; The POLLING_UP message that E sends also can be received by the secondary port of oneself.Host node A and E will distinguish the start delay timer, suppose that here A is earlier overtime, block secondary port, switch to good working condition, and send the RING_UP_FLUSH_FDB message.After this RING_UP_FLUSH_FDB message is received by C, D, B node, the pre-blocked state of Pre-forwarding port will be removed.And host node E receives this RING_UP_FLUSH_FDB message, will block secondary port at once, switches to good working condition.
Be understandable that,, should be pointed out that the strictness of restriction do not do to(for) the order of above-mentioned steps though the Fig. 3 in the foregoing description for ease of understanding, has adopted the succession description to the step of method.
Those of ordinary skills it is also understood that, all or part of step in the foregoing description can instruct relevant hardware to realize by program, described program can be stored in the computer read/write memory medium, described storage medium can be ROM/RAM, magnetic disc, CD etc.
Need to prove, in the embodiment of the invention described above, in each ethernet ring network of intersecting ring network, clearly do not distinguish main ring and the outer secondary segment that depends on main ring, and distinguish each looped network by host node sign and priority.In other embodiments of the invention, also can in each ethernet ring network of intersecting ring network, clearly distinguish main ring and the outer secondary segment that depends on main ring, such as, needs according to practical business, the ethernet ring network that is positioned at core/convergence-level in the intersecting ring network is set to main ring, directly be connected ethernet ring network that the ring on the main ring promptly directly intersects with main ring and be set to section attached to the low level on the main ring, the more outer field ring that directly is connected on the section of this low level promptly is set to the more section of low level with the ethernet ring network that the section of this low level directly intersects.Such as, referring to Fig. 4, ethernet ring network R1 (ABDCA forms by node) is set to main ring, its host node is A, the ethernet ring network R2 (CDFEC forms by node) that directly intersects with this main ring R1 just deteriorates to section CEFD of the low level that is connected on the main ring, and its host node is E, and, with the section EGHF that also deteriorates to the more low level on the section CEFD that is connected low level attached to the directly crossing ethernet ring network R3 (EFHGE forms by node) of the section CEFD of the low level on the main ring, its host node is G.When the present invention adopt above-mentioned to intersecting ring network in each ring when dividing the mode of main ring and low layer secondary segment, it realizes that process of the present invention is identical with the process of Fig. 3 in the foregoing description, is that each ethernet ring network in the above-mentioned process shown in Figure 3 specifically corresponds to more section of low level of the section of main ring, each low level and each.
In addition, when adopt above-mentioned to intersecting ring network in each ring when dividing the mode of main ring and low layer secondary segment, usually, require when the common link of high-rise secondary segment and low layer secondary segment takes place to interrupt, should decontrol the secondary port of high interval host node, ensureing that the big flow on the high-rise secondary segment can all not be flushed on the low layer secondary segment, such purpose is the flow that ensures original high-rise secondary segment, and the section that is unlikely to go to low level gets on.Therefore, when the present invention adopt above-mentioned to intersecting ring network in each ring when dividing the mode of main ring and low layer secondary segment, when the priority of each host node is set in execution in step 301, the concrete processing is: it is the highest that the priority of host node is set in the main ring, the priority that directly is connected the host node on each low layer secondary segment on the main ring is lower, and the priority that directly is connected the host node on the section of more low level on this low layer secondary segment is lower.
In addition, the invention allows for a kind of host node.This host node is arranged in any one ethernet ring network of intersecting ring network, and referring to Fig. 9, this host node comprises:
Detecting unit is used for when the place host node is in malfunction, and whether poll is normal to detect the place host node, if then send poll to the fault recovery processing unit and normally notify;
The fault recovery processing unit, be used for after receiving the normal notice of poll, send the poll normal message of carrying place host node priority by intersecting ring network, if monitor the poll normal message of carrying priority that other malfunction host nodes send, whether the priority of then judging the place host node is higher than the priority in this poll normal message, if, then transmit this poll normal message, and judge in scheduled duration, whether to receive the poll normal message that self sends, if receive, then send congestion notification to the port controlling unit;
The port controlling unit is used for after receiving congestion notification, blocks secondary port.
Wherein, described detecting unit is used for regularly sending health detection message in intersecting ring network, detects whether receive the health detection message that self sends in scheduled duration, if receive, determines that then place host node poll is normal.
Described fault recovery processing unit, be further used for when the place host node is in good working condition, receive the poll normal message of other host nodes transmissions from the port except that secondary port after, no longer transmit from secondary port, and, do not transmit from the poll normal message that secondary port receives.
Described fault recovery processing unit, after being further used in scheduled duration, receiving the poll normal message that self sends, at first start the delay timer that sets in advance, whether judgement receives refreshing of other host nodes transmissions and transmits message before delay timer is overtime, if, then carry out described processing to port controlling unit transmission congestion notification, otherwise, by the time after described delay timer is overtime, carry out the described processing that sends congestion notification to the port controlling unit.
Described fault recovery processing unit after being further used for not receiving the poll normal message that self sends in scheduled duration, sends detection notice to described detecting unit;
Described detecting unit is further used for after receiving described detection notice, carries out whether poll normal handling of described detection place host node.
Described fault recovery processing unit, be further used for carrying of receiving that other host nodes send after refreshing of priority transmit message, the priority of the host node under the priority in this message and self port that sets in advance relatively, if the priority of the host node under the port is not less than the priority in this message, then satisfying under the condition of predetermined policy, refreshing according to this and transmit message and refresh transmitting of this port.
Preferably, on the intersecting ring network at this host node place, an ethernet ring network is set to main ring, the ethernet ring network that directly intersects with main ring is set to the section attached to the low level on the main ring, the ethernet ring network that directly intersects with the section of this low level is set to be connected the section of the more low level on the section of this low level, and
When described host node was the host node of main ring, the priority of this host node was the highest, and, the priority the when priority when described host node is a host node on the low layer secondary segment is higher than this host node for the host node on the low layer secondary segment more.
In addition, the invention allows for a kind of transmission node.This transmission node is arranged in any one ethernet ring network of intersecting ring network, and referring to Figure 10, this transmission node comprises:
The packet sending and receiving unit is used for after a port receives the message of sending the outside, and this message and this reporting port information are transmitted control unit to message;
Message is transmitted control unit, is used for parsing after the message that reports is the poll normal message, and this poll normal message is transmitted from other all of the ports outside the port that receives this poll normal message in control packet sending and receiving unit.
Described message is transmitted control unit,
Being further used for parsing the message that reports is the health detection message of carrying host node sign, sequence of message number and fault status information, and after the port that reports is pre-blocked state, judge the host node sign that whether records in self in this health detection message and sequence of message number, if, then no longer transmit this health detection message, otherwise, write down this host node sign and sequence of message number, and control described this health detection message of packet sending and receiving unit forwards;
And/or being further used for parsing the message that reports is the health detection message of carrying full state information, and after the port that reports is pre-blocked state, no longer transmits this health detection message.
Described message is transmitted control unit, being further used for parsing the message that reports is to carry after refreshing of priority transmit message, the priority of the host node under the priority in this message and self port that sets in advance relatively, if the priority of the host node under the port is not less than the priority in this message, then satisfying under the condition of predetermined policy, refreshing according to this and transmit message and refresh transmitting of this port.
Preferably, in the intersecting ring network at this transmission node place, an ethernet ring network is set to main ring, the ethernet ring network that directly intersects with main ring is set to the section attached to the low level on the main ring, the ethernet ring network that directly intersects with the section of this low level is set to be connected the section of the more low level on the section of this low level, and
In the intersecting ring network at this transmission node place, the priority of host node is the highest on the main ring, and the priority that directly is connected the host node on each low layer secondary segment on the main ring is higher than the priority of the host node on the section of the more low level that directly is connected on this low layer secondary segment.
Be understandable that, only be schematic in the accompanying drawing or shown in the embodiment, the presentation logic structure, the wherein said unit that shows as separating component may or may not be physically to separate, the parts that show as the unit may be or may not be physical locations, promptly can be positioned at a place, perhaps be distributed on several network element.
In addition, the invention allows for a kind of intersecting ring network, comprise at least two crossing ethernet ring networks in this intersecting ring network, each ethernet ring network comprises host node and at least two transmission nodes, host node and each transmission node service data transmission on ethernet ring network are finished the miscellaneous service function; And each host node in this intersecting ring network can adopt any one host node among the invention described above embodiment to realize, each transmission node can adopt any one transmission node among the invention described above embodiment to realize in this intersecting ring network.
In the present invention, a kind of preferred construction of intersecting ring network correspondence is: in the intersecting ring network, an ethernet ring network is set to main ring, the ethernet ring network that directly intersects with main ring is set to the section attached to the low level on the main ring, the ethernet ring network that directly intersects with the section of this low level is set to be connected the section of the more low level on the section of this low level, and
In the intersecting ring network, the priority of host node is the highest on the main ring, and the priority that directly is connected the host node on each low layer secondary segment on the main ring is higher than the priority of the host node on the section of the more low level that directly is connected on this low layer secondary segment.
Need to prove that in the present invention, related " a plurality of " all refer at least two, that is, and two or more any one number.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (24)
1, fault recovery processing method in the intersecting ring network, it is characterized in that, this method is applied in the intersecting ring network of the crossing arbitrary topology that forms of a plurality of ethernet ring networks, each ethernet ring network comprises host node and several transmission nodes, and the host node of each ethernet ring network all disposes priority separately in the intersecting ring network; This method comprises:
The host node of malfunction detects whether poll is normal in the intersecting ring network, if then send the poll normal message carry self priority by intersecting ring network;
If the host node of malfunction receives the poll normal message of carrying priority that other malfunction host nodes send, whether the priority of then judging self is higher than the priority in this poll normal message, if then transmit this poll normal message;
The host node of malfunction judges whether receive the poll normal message that self sends in scheduled duration, if then block secondary port.
2, method according to claim 1, it is characterized in that, whether the normal step of poll comprises in described detection: the host node of malfunction regularly sends health detection message in the intersecting ring network, whether detection receives the health detection message that self sends in scheduled duration, if receive, determine that then the ethernet ring network poll of being controlled is normal.
3, method according to claim 2 is characterized in that, carries host node sign, sequence of message number and fault status information in the health detection message that the host node of described malfunction sends;
This method further comprises: after the node in the intersecting ring network receives health detection message from the port of self pre-blocked state, if what carry in this message is the information of fault state, then judge the host node sign that whether records in self in this health detection message and sequence of message number, if, then no longer transmit this health detection message, otherwise, write down this host node sign and sequence of message number, and transmit this health detection message.
4, method according to claim 2 is characterized in that, this method further comprises: the host node of good working condition regularly sends the health detection message of carrying full state information in the intersecting ring network; After node in the intersecting ring network receives health detection message from the port of self pre-blocked state,, then no longer transmit this health detection message if what carry in this message is the information of good working condition.
5, according to any described method in the claim 1 to 4, it is characterized in that, the priority that the host node of nonserviceabling is judged self is lower than after the priority in the received poll normal message, and further comprise: the host node of this malfunction directly abandons the current poll normal message that receives.
6, according to any described method in the claim 1 to 4, it is characterized in that this method further comprises: after transmission node receives described poll normal message from self port in the intersecting ring network, all pass through self other all of the port and transmit; And/or, after the host node that is in good working condition in the intersecting ring network receives the poll normal message from the port except that secondary port, no longer transmit from secondary port, and, do not transmit from the poll normal message that secondary port receives.
7, according to any described method in the claim 1 to 4, it is characterized in that, the host node of malfunction receives in scheduled duration after the poll normal message that self sends, and before blocking secondary port, further comprise: the host node of this malfunction starts the delay timer that sets in advance, whether judgement receives refreshing of other host nodes transmissions and transmits message before delay timer is overtime, if, then carry out the step of the secondary port of described obstruction, otherwise, by the time after described delay timer is overtime, carry out the step of the secondary port of described obstruction.
8, according to any described method in the claim 1 to 4, it is characterized in that, the host node of nonserviceabling blocks after the secondary port, further comprise: this host node is moved to good working condition, and send by intersecting ring network and to carry self refreshing of priority and transmit message, on the intersecting ring network node receive refresh transmit message after, the priority of the host node under the priority in this message and self port that sets in advance relatively, if the priority of the host node under the port is not less than the priority in this message, then satisfying under the condition of predetermined policy, refreshing according to this and transmit message and refresh transmitting of this port.
9, method according to claim 8, it is characterized in that the affiliated host node of port that node is set comprises: for the port of node, if this port only is positioned on the ethernet ring network, so, the host node on the ethernet ring network at this port place is set to the host node under this port; If this port is positioned on a plurality of ethernet ring networks simultaneously, so, the highest host node of host node medium priority of these a plurality of ethernet ring networks is set to the host node under this port.
10, according to any described method in the claim 1 to 4, it is characterized in that, the host node of malfunction is judged and do not received in scheduled duration after the poll normal message that self sends, and further comprises: the host node of this malfunction turns to carries out the whether normal step of poll of described detection.
11, method according to claim 1, it is characterized in that, this method further comprises: an ethernet ring network in the intersecting ring network is set to main ring, the ethernet ring network that directly intersects with main ring is set to the section attached to the low level on the main ring, the ethernet ring network that directly intersects with the section of this low level is set to be connected the section of the more low level on the section of this low level, and it is the highest that the priority of host node is set in the main ring, and the priority that directly is connected the host node on each low layer secondary segment on the main ring is higher than the priority of the host node on the section of the more low level that directly is connected on this low layer secondary segment;
Each ethernet ring network comprises in the described intersecting ring network: the section of main ring, all low levels and all are the section of low level more.
12, a kind of host node is characterized in that, this host node is arranged on the ethernet ring network of intersecting ring network, and this host node comprises:
Detecting unit is used for when the place host node is in malfunction, and whether poll is normal to detect the place host node, if then send poll to the fault recovery processing unit and normally notify;
The fault recovery processing unit, be used for after receiving the normal notice of poll, send the poll normal message of carrying place host node priority by intersecting ring network, if monitor the poll normal message of carrying priority that other malfunction host nodes send, whether the priority of then judging the place host node is higher than the priority in this poll normal message, if, then transmit this poll normal message, and judge in scheduled duration, whether to receive the poll normal message that self sends, if receive, then send congestion notification to the port controlling unit;
The port controlling unit is used for after receiving congestion notification, blocks secondary port.
13, host node according to claim 12 is characterized in that, described detecting unit, be used for regularly sending health detection message in intersecting ring network, whether detection receives the health detection message that self sends in scheduled duration, if receive, determine that then place host node poll is normal.
14, host node according to claim 12, it is characterized in that, described fault recovery processing unit, be further used for when the place host node is in good working condition, receive the poll normal message of other host nodes transmissions from the port except that secondary port after, no longer transmit from secondary port, and, do not transmit from the poll normal message that secondary port receives.
15, according to claim 12,13 or 14 described host nodes, it is characterized in that, described fault recovery processing unit, after being further used in scheduled duration, receiving the poll normal message that self sends, at first start the delay timer that sets in advance, whether judgement receives refreshing of other host nodes transmissions and transmits message before delay timer is overtime, if, then carry out the described processing that sends congestion notification to the port controlling unit, otherwise, by the time after described delay timer is overtime, carry out the described processing that sends congestion notification to the port controlling unit.
According to claim 12,13 or 14 described host nodes, it is characterized in that 16, described fault recovery processing unit after being further used for not receiving the poll normal message that self sends in scheduled duration, sends detection notice to described detecting unit;
Described detecting unit is further used for after receiving described detection notice, carries out whether poll normal handling of described detection place host node.
17, according to claim 12,13 or 14 described host nodes, it is characterized in that, described fault recovery processing unit, be further used for carrying of receiving that other host nodes send after refreshing of priority transmit message, the priority of the host node under the priority in this message and self port that sets in advance relatively, if the priority of the host node under the port is not less than the priority in this message, then satisfying under the condition of predetermined policy, refreshing according to this and transmit message and refresh transmitting of this port.
18, host node according to claim 12, it is characterized in that, on the intersecting ring network at this host node place, an ethernet ring network is set to main ring, the ethernet ring network that directly intersects with main ring is set to the section attached to the low level on the main ring, the ethernet ring network that directly intersects with the section of this low level is set to be connected the section of the more low level on the section of this low level, and
When described host node was the host node of main ring, the priority of this host node was the highest, and, the priority the when priority when described host node is a host node on the low layer secondary segment is higher than this host node for the host node on the low layer secondary segment more.
19, a kind of transmission node is characterized in that, this transmission node is arranged on the ethernet ring network of intersecting ring network, and this transmission node comprises:
The packet sending and receiving unit is used for after a port receives the message of sending the outside, and this message and this reporting port information are transmitted control unit to message;
Message is transmitted control unit, is used for parsing after the message that reports is the poll normal message, and this poll normal message is transmitted from other all of the ports outside the port that receives this poll normal message in control packet sending and receiving unit.
20, transmission node according to claim 19 is characterized in that, described message is transmitted control unit,
Being further used for parsing the message that reports is the health detection message of carrying host node sign, sequence of message number and fault status information, and after the port that reports is pre-blocked state, judge the host node sign that whether records in self in this health detection message and sequence of message number, if, then no longer transmit this health detection message, otherwise, write down this host node sign and sequence of message number, and control described this health detection message of packet sending and receiving unit forwards;
And/or being further used for parsing the message that reports is the health detection message of carrying full state information, and after the port that reports is pre-blocked state, no longer transmits this health detection message.
21, transmission node according to claim 19, it is characterized in that, described message is transmitted control unit, being further used for parsing the message that reports is to carry after refreshing of priority transmit message, the priority of the host node under the priority in this message and self each port that sets in advance relatively, if the priority of the host node under the port is not less than the priority in this message, then satisfying under the condition of predetermined policy, refreshing according to this and transmit message and refresh transmitting of this port.
22, according to any described transmission node in the claim 19 to 21, it is characterized in that, in the intersecting ring network at this transmission node place, an ethernet ring network is set to main ring, the ethernet ring network that directly intersects with main ring is set to the section attached to the low level on the main ring, the ethernet ring network that directly intersects with the section of this low level is set to be connected the section of the more low level on the section of this low level, and
In the intersecting ring network at this transmission node place, the priority of host node is the highest on the main ring, and the priority that directly is connected the host node on each low layer secondary segment on the main ring is higher than the priority of the host node on the section of the more low level that directly is connected on this low layer secondary segment.
23, a kind of intersecting ring network is characterized in that, comprises in this intersecting ring network that a plurality of ethernet ring networks, each ethernet ring network comprise host node and several transmission nodes; And the host node in this intersecting ring network on each ethernet ring network is as described in the claim 12 to 18 any one, and the transmission node in this intersecting ring network on each ethernet ring network is as described in the claim 19 to 22 any one.
24, intersecting ring network according to claim 23, it is characterized in that, in this intersecting ring network, an ethernet ring network is set to main ring, the ethernet ring network that directly intersects with main ring is set to the section attached to the low level on the main ring, the ethernet ring network that directly intersects with the section of this low level is set to be connected the section of the more low level on the section of this low level, and
In the described intersecting ring network, the priority of host node is the highest on the main ring, and the priority that directly is connected the host node on each low layer secondary segment on the main ring is higher than the priority of the host node on the section of the more low level that directly is connected on this low layer secondary segment.
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