CN101651596A - Method for accelerating switching during Ethernet automatic protection switching failure - Google Patents

Method for accelerating switching during Ethernet automatic protection switching failure Download PDF

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Publication number
CN101651596A
CN101651596A CN200910307805A CN200910307805A CN101651596A CN 101651596 A CN101651596 A CN 101651596A CN 200910307805 A CN200910307805 A CN 200910307805A CN 200910307805 A CN200910307805 A CN 200910307805A CN 101651596 A CN101651596 A CN 101651596A
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message
node
ring network
ring
transmission
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CN101651596B (en
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何三波
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Maipu Communication Technology Co Ltd
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Maipu Communication Technology Co Ltd
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Priority to PCT/CN2010/076324 priority patent/WO2011035674A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

The invention relates to a method for switching during a Ethernet automatic protection switching failure and discloses a method for accelerating the data switching during the Ethernet automatic protection switching (EAPS) ring network failure to overcome the disadvantage that a transmission node in prior art increases the protocol complexity during the failure switching. The method for accelerating the switching during the EAPS failure adopts the technical essential that if a node which is detected to have the failure is a transmission node, the transmission node detected to have the failure generates a ring network failure message and a ring network refresh message, and transmits the ring network failure message to a main node and the ring network refresh message to other transmission nodes, and then refreshes self-MAC list items; when the main node receives the ring network failure message, the state of a spanning tree of an auxiliary port of the main node is set to be a forwarding state, a ring network refresh message is respectively generated and is transmitted from a main port and the auxiliary port to all transmission nodes, and the main node refreshes self-list items; and when other transmission nodes receive the ring network refresh message, the MAC list items thereof are refreshed. The invention is applied to the switching of the EAPS ring network failure.

Description

Quicken the method for switching during the ethernet ring network fault
Technical field
The present invention relates to ethernet technology and Ethernet looped network EAPS (Ethernet Automatic ProtectionSwitching) agreement, particularly the method for switching during the ethernet ring network fault.
Background technology
In the traditional E APS looped network technology (seeing RFC3619), the EAPS ring is made of a host node and several transmission nodes, and as shown in Figure 1, each node all has master port P and secondary port S, loop just often, the spanning-tree state of the secondary port S of host node is set to blocked state.Existing host node judges that the method for ethernet ring network fault has two kinds in the standard at present: first kind is that host node cycle ground sends fault detect message (HELLO) from master port P, if can receive this fault detect message from secondary port S, show that then loop is complete; If can not receive the fault detect message at the appointed time, think that then fault has taken place loop.Second kind is the direct-connected with it Link State of transmission node monitoring.Transmission node then sends ring network fault (LINK_DOWN) message to host node if finding the physical signalling of its EAPS port (P port and S port) loses, and after host node is received the LINK_DOWN message of transmission node, then thinks the ether loop fault.In addition, Xiang Guan equipment manufacturers also have a kind of method of judgement ether loop fault commonly used: lose if host node detects with the circuit physical signalling of one of its master port P or secondary port S, then host node thinks that fault has appearred in the ether loop.
When host node any by in above three kinds of methods, detected loop fault, what then the loop of general execution switched is operating as: the spanning-tree state that its secondary port S is set is a forwarding state, and refresh (RING_DOWN_FLUSH_FDB) message from master port P and secondary port S to all transmission nodes transmission looped networks respectively, after each transmission node is received the RING_DOWN_FLUSH_FDB message, refresh its medium access control (MAC) list item, thereby realize the data switching.
Chinese patent publication number CN101217443A discloses " a kind of Ethernet ring protection changing method and transmission node " patent application; in the technical scheme of this patent disclosure; transmission node has increased the processing to the LINK_DOWN message; receive that promptly the LINK_DOWN message also needs to refresh MAC address entries then giving control plane on the LINK_DOWN message.This method can reduce because the RING_DOWN_FLUSH_FDB message dropping that host node sends causes transmission node in time not refresh the time that MAC address entries causes data interruption, but this method has increased the processing of transmission node to the LINK_DOWN message, has increased the complexity of agreement.
Summary of the invention
Technical problem to be solved by this invention is exactly the shortcoming that has increased protocol complexity at the above-mentioned shortcoming, particularly transmission node of prior art when the failover, the method that expedited data switched when a kind of EAPS ring network fault was provided.
The present invention solve the technical problem, and the technical scheme of employing is that the method that acceleration is switched during the ethernet ring network fault is characterized in that:
During the ethernet ring network fault, the node that detects fault is if host node, and then host node generates the RING_DOWN_FLUSH_FDB message and sends to transmission node, and refreshes the self MAC list item, when transmission node is received the RING_DOWN_FLUSH_FDB message, refresh its MAC address entries;
During the ethernet ring network fault, detect the node of fault if transmission node is carried out following steps:
A, the transmission node that detects fault generate LINK_DOWN message and RING_DOWN_FLUSH_FDB message, and the LINK_DOWN message sent to host node, the RING_DOWN_FLUSH_FDB message is sent to other transmission node, refresh the MAC address entries of self then;
When b, host node are received the LINK_DOWN message, but the spanning-tree state that its secondary port is set is forwarding state, generates the RING_DOWN_FLUSH_FDB message respectively and sends to all transmission nodes from Primary port and secondary port, and refresh the self MAC list item;
C, when other transmission nodes are received the RING_DOWN_FLUSH_FDB message, refresh its MAC address entries.
Further, receive the transmission node of LINK_DOWN message, message is not dealt with, directly transmit.
Further, the node that detects fault is if host node, but then host node spanning-tree state that its secondary port is set is forwarding state.
The invention has the beneficial effects as follows, can not increase basically under the situation of transmission node burden and protocol complexity, improve the ring network fault switch speed, and reduced MAC address entries and can not in time obtain the probability that refreshes because the looped network update of host node loses.
Description of drawings
Fig. 1 is the EAPS ring network structure schematic diagram of prior art;
Fig. 2 is the ring network fault schematic diagram of embodiment 1;
Fig. 3 is the ring network fault schematic diagram of embodiment 2;
Fig. 4 is the ring network fault schematic diagram of embodiment 3.
Embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
Quicken the method switched during ethernet ring network fault of the present invention, when ethernet ring network breaks down, the transmission node generation ring network fault LINK_DOWN message and the looped network that detect fault in the ethernet ring network refresh the RING_DOWN_FLUSH_FDB message, and the LINK_DOWN message sent to host node, the RING_DOWN_FLUSH_FDB message is sent to other transmission node; When other transmission node is received the RING_DOWN_FLUSH_FDB message, refresh its MAC address entries.When host node is received the LINK_DOWN message, but the spanning-tree state that its secondary port is set is forwarding state, refreshes the self MAC list item, generates the RING_DOWN_FLUSH_FDB message respectively and sends to all transmission nodes from Primary port and secondary port.If what detect fault is host node, then host node refreshes the MAC address entries of self, and generates the RING_DOWN_FLUSH_FDB message and send from the EAPS port of non-fault.
Embodiment 1
As Fig. 2, when the physical circuit between transmission node 2 and the transmission node 3 breaks down, transmission node 2 and transmission node 3 all detect this fault, transmission node 2 and transmission node 3 are carried out following operation respectively: generate LINK_DOWN message and RING_DOWN_FLUSH_FDB message, then the LINK_DOWN message is issued host node, the RING_DOWN_FLUSH_FDB message is issued other transmission node; And refresh the MAC address entries of self.
After host node received first LINK_DOWN message, the spanning-tree state of revising secondary port was a forwarding state, refreshes MAC address entries, sent the RING_DOWN_FLUSH_FDB message by the transmission node 1,2,3,4 and 5 of Primary port and secondary port on ring.
Transmission node does not deal with message after receiving the LINK_DOWN message that is sent to host node, directly transmits.
Transmission node 1 should be received the RING_DOWN_FLUSH_FDB message of transmission node 2 earlier, after receive the RING_DOWN_FLUSH_FDB message of host node; Transmission node 4 and 5 should be received the RING_DOWN_FLUSH_FDB message of transmission node 3 earlier, after receive the RING_DOWN_FLUSH_FDB message of host node.So non-fault transmission node is always received fault transmission node RING_DOWN_FLUSH_FDB message generally speaking earlier, after receive the RING_DOWN_FLUSH_FDB message of host node.So just make non-fault transmission node earlier refresh the MAC address entries table, the action that refreshes the action of MAC address entries and spanning-tree state that host node is revised secondary port and be forwarding state almost takes place simultaneously, thereby reduce the time of data interruption, the switching of data during acceleration disturbance.
Embodiment 2
As Fig. 3, when the circuit between host node and the transmission node 1 breaks down, transmission node 1 detects fault, generate LINK_DOWN message and RING_DOWN_FLUSH_FDB message, then the LINK_DOWN message is issued host node, the RING_DOWN_FLUSH_FDB message is sent to transmission node 2,3,4 and 5; And refresh the MAC address entries of self.For host node, no matter be by himself detecting its port P line fault or by receiving that the LINK_DOWN message judges the line fault of its port P, but the spanning-tree state that its secondary port at first is set is forwarding state, and generate the RING_DOWN_FLUSH_FDB message, send to transmission node 5,4,3,2 and 1 from secondary port S.Because fault transmission node 1 also sends the RING_DOWN_FLUSH message, can also reduce because the probability that the RING_DOWN_FLUSH_FDB message dropping causes the MAC address entries of some transmission node to can not get in time refreshing.
Embodiment 3
As Fig. 4, when the circuit between host node and the transmission node 5 breaks down, transmission node 5 detects fault, generate LINK_DOWN message and RING_DOWN_FLUSH_FDB message, then the LINK_DOWN message is sent to host node, the RING_DOWN_FLUSH_FDB message is sent to transmission node 4,3,2 and 1; And refresh the MAC address entries of self.For host node, no matter be by himself detecting its secondary port S line fault or by receiving that the LINK_DOWN message judges the line fault of its secondary port S, all to generate the RING_DOWN_FLUSH_FDB message, send to transmission node 1,2,3,4 and 5 from master port P.Because fault transmission node 5 also sends the RING_DOWN_FLUSH message, can reduce because the probability that the RING_DOWN_FLUSH_FDB message dropping causes the MAC address entries of some transmission node to can not get in time refreshing.

Claims (3)

1. quicken the method switched during the ethernet ring network fault, it is characterized in that:
During the ethernet ring network fault, the node that detects fault is if host node, and then host node generates the RING_DOWN_FLUSH_FDB message and sends to transmission node, and refreshes the self MAC list item, when transmission node is received the RING_DOWN_FLUSH_FDB message, refresh its MAC address entries;
During the ethernet ring network fault, detect the node of fault if transmission node is carried out following steps:
A, the transmission node that detects fault generate LINK_DOWN message and RING_DOWN_FLUSH_FDB message, and the LINK_DOWN message sent to host node, the RING_DOWN_FLUSH_FDB message is sent to other transmission node, refresh the MAC address entries of self then;
When b, host node are received the LINK_DOWN message, but the spanning-tree state that its secondary port is set is forwarding state, generates the RING_DOWN_FLUSH_FDB message respectively and sends to all transmission nodes from Primary port and secondary port, and refresh the self MAC list item;
C, when other transmission nodes are received the RING_DOWN_FLUSH_FDB message, refresh its MAC address entries.
2. quicken the method switched during ethernet ring network fault according to claim 1, it is characterized in that, receive the transmission node of LINK_DOWN message, message is not dealt with, directly forwarding.
3. quicken the method switched during ethernet ring network fault according to claim 1, it is characterized in that, the node that detects fault is if host node, but then host node spanning-tree state that its secondary port is set is forwarding state.
CN200910307805XA 2009-09-27 2009-09-27 Method for accelerating switching during Ethernet automatic protection switching failure Active CN101651596B (en)

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WO2011035674A1 (en) * 2009-09-27 2011-03-31 迈普通信技术股份有限公司 Method for accelerating data switching during ethernet ring network failure
CN102006236A (en) * 2010-12-13 2011-04-06 迈普通信技术股份有限公司 Handover processing method in case of failed Ethernet automatic protection switching (EAPS) looped network link and switching equipment
CN102025561A (en) * 2010-11-24 2011-04-20 中兴通讯股份有限公司 Method and system for refreshing MAC (Medium Access Controller) in Ethernet ring
CN102055636A (en) * 2010-12-13 2011-05-11 迈普通信技术股份有限公司 Method for improving accelerated switching during EAPS looped network failure and EAPS looped network system
CN102075413A (en) * 2010-12-01 2011-05-25 中兴通讯股份有限公司 Method and system for dynamically and rapidly switching multicast streams in Ethernet
CN102368734A (en) * 2011-11-03 2012-03-07 中兴通讯股份有限公司 Processing method of MAC address forwarding table of Ethernet ring network and apparatus thereof
CN102487348A (en) * 2010-12-02 2012-06-06 中兴通讯股份有限公司 Method and system for realizing looped network uplink protection
CN105577484A (en) * 2016-03-01 2016-05-11 上海斐讯数据通信技术有限公司 EAPS failure detection method and system, and EAPS network
US9918353B2 (en) 2013-02-19 2018-03-13 Zte Corporation 802.1X access session keepalive method, device, and system
CN111698157A (en) * 2020-07-23 2020-09-22 迈普通信技术股份有限公司 Link management method, board card and switch

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WO2011035674A1 (en) * 2009-09-27 2011-03-31 迈普通信技术股份有限公司 Method for accelerating data switching during ethernet ring network failure
CN102025561B (en) * 2010-11-24 2015-06-10 中兴通讯股份有限公司 Method and system for refreshing MAC (Medium Access Controller) in Ethernet ring
CN102025561A (en) * 2010-11-24 2011-04-20 中兴通讯股份有限公司 Method and system for refreshing MAC (Medium Access Controller) in Ethernet ring
CN102075413A (en) * 2010-12-01 2011-05-25 中兴通讯股份有限公司 Method and system for dynamically and rapidly switching multicast streams in Ethernet
CN102075413B (en) * 2010-12-01 2014-11-05 中兴通讯股份有限公司 Method and system for dynamically and rapidly switching multicast streams in Ethernet
WO2012071905A1 (en) * 2010-12-02 2012-06-07 中兴通讯股份有限公司 Method and system for protecting ring network uplink
CN102487348A (en) * 2010-12-02 2012-06-06 中兴通讯股份有限公司 Method and system for realizing looped network uplink protection
CN102487348B (en) * 2010-12-02 2015-04-01 中兴通讯股份有限公司 Method and system for realizing looped network uplink protection
CN102055636A (en) * 2010-12-13 2011-05-11 迈普通信技术股份有限公司 Method for improving accelerated switching during EAPS looped network failure and EAPS looped network system
CN102006236B (en) * 2010-12-13 2012-08-08 迈普通信技术股份有限公司 Handover processing method in case of failed Ethernet automatic protection switching (EAPS) looped network link and switching equipment
CN102055636B (en) * 2010-12-13 2013-04-10 迈普通信技术股份有限公司 Method for improving accelerated switching during EAPS looped network failure and EAPS looped network system
CN102006236A (en) * 2010-12-13 2011-04-06 迈普通信技术股份有限公司 Handover processing method in case of failed Ethernet automatic protection switching (EAPS) looped network link and switching equipment
CN102368734A (en) * 2011-11-03 2012-03-07 中兴通讯股份有限公司 Processing method of MAC address forwarding table of Ethernet ring network and apparatus thereof
US9918353B2 (en) 2013-02-19 2018-03-13 Zte Corporation 802.1X access session keepalive method, device, and system
CN105577484A (en) * 2016-03-01 2016-05-11 上海斐讯数据通信技术有限公司 EAPS failure detection method and system, and EAPS network
CN111698157A (en) * 2020-07-23 2020-09-22 迈普通信技术股份有限公司 Link management method, board card and switch
CN111698157B (en) * 2020-07-23 2022-05-24 迈普通信技术股份有限公司 Link management method, board card and switch

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