CN101425952B - Method and apparatus for ensuring Ether ring network reliable operation - Google Patents
Method and apparatus for ensuring Ether ring network reliable operation Download PDFInfo
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Abstract
The invention discloses a method and device for guaranteeing reliable operation for Ethernet ring. Main node is restarted by following steps: main node of Ethernet ring network acquires network state before restarting and network configuration information after restarting; the main node blocks the data relay function of control VLAN of self ring port and protection service VLAN, adds the ring port in control VLAN and protection service VLAN; the ring port comprises main port and slave port; data relay function is opened for control VLAN of ring port; the link state is detected for validating entirety; protection service VLAN data relay function of ring port or main port is opened according to the detection result; other node is notified to update MAC address list. The inventive method effectively guarantees normal and reliable operation of Ethernet Ring network.
Description
Technical field
The present invention relates to networking technology area, refer to the automatic resist technology of a kind of ethernet ring network especially, ensure the method and the device of ethernet ring network reliability service when host node restarts in ethernet ring network.
Background technology
High speed development along with the internet; IP network becomes necessary tool in people's routine work and the life gradually; RFC3619 has defined a kind of ethernet ring network automatic protection switching (Ethernet AutomaticProtection Switching; EAPS) method; this method has solved ethernet device and has broken down in the loop network topological structure and restrain problem slowly, utilizes this method can make convergence time in 50ms.This method has defined basic concepts, and each EAPS physical rings is connected to form by a plurality of nodes, and according to the difference of function, node is divided into transmission node and host node.Can dispose a plurality of domain logics (domain) on the ring, each domain logic is by a host node (having and have only) and a plurality of transmission node and ring upper port formation.Each domain logic also comprises: one group is used for the protection business that user data service is transmitted---VLAN (Virtual Local Network, VLAN), and a control VLAN who is used to transmit the EAPS protocol massages.For a specific domain logic; the master port of host node (primary) periodically sends health detection hello frame; the hello frame transmits in control VLAN; when link is intact; host node can receive this hello frame from port (secondary); host node guarantees to protect in the service VLAN can not form loop, thereby has effectively avoided " broadcast storm " by blocking from the data forwarding function of port protection service VLAN.
Be in the ethernet ring network automatic protective system of normal operating condition; as shown in Figure 1; form by node S1, S2, S3 and S4; on the ring that these four nodes are formed, disposed an Ethernet ring protection territory; node S2 is host node (Master), and all the other nodes (S1, S3 and S4) are transmission node (Transit).Host node S2 has two ring upper port; wherein; port one is master port (Primary; be abbreviated as P); port 2 is from port (Secondary; be abbreviated as S), also defined a control VLAN and several protection service VLAN in addition in the territory, all of the port all is configured in control VLAN and the protection service VLAN on the ring.
In the prior art; host node breaks down when restarting; because the restriction of hardware chip; the quantity of the VLAN that need add is bigger usually; the ring upper port of this host node can't join in control VLAN and all the protection service VLAN immediately; the process that promptly joins these VLAN needs a period of time; therefore; the adition process of controlling VLAN and all protection service VLAN in the prior art comprises following two kinds of situations; both of these case; add VLAN during this period of time in may cause network to be in down state, make a concrete analysis of as follows:
First kind of situation; the idiographic flow of adding control VLAN and all protection service VLAN as shown in Figure 2 after host node broke down; node produces the ethernet ring network host node on the ring; after host node breaks down and restarts; if the ring upper port has added control VLAN earlier; add the protection service VLAN again, will cause network to open circuit.Because in case added control VLAN, the hello frame that the master port of host node sends just can be received from port through this transmission node, so host node judgement link-recovery, protection service VLAN data forwarding function will be blocked from port.But at this moment, the ring upper port of host node also adds the protection service VLAN, and the data in these protection service VLAN just can not arrive host node, promptly protect the service VLAN data forwarding obstructed, and formation is opened circuit, and causes interior during this period of time network to be in down state.
Second kind of situation, the idiographic flow of adding control VLAN and all protection service VLAN as shown in Figure 3 after host node broke down, node produces the ethernet ring network host node on the ring, after host node breaks down and restarts, if the ring upper port has added a part of protection service VLAN earlier, add control VLAN again, and then add remainder protection service VLAN; Execute so and add earlier after part protects service VLAN,, will cause the protection VLAN that adds earlier to form loop, cause " broadcast storm " owing to also add control VLAN this moment; Because also do not add control VLAN this moment; host node do not receive the hello frame that master port sends from port; think link occurs fault; will open protection service VLAN data forwarding function from port; this part the protection service VLAN that has so added will form loop; form " broadcast storm ", make network be in down state.And it is in this case shown in Figure 3; after having added control VLAN; host node also might occur and judge link-recovery; obstruction is from the protection service VLAN data forwarding function of port; cause the protection service VLAN data forwarding of remainder obstructed; formation is opened circuit, and makes network be in down state.
As seen, the host node of prior art in ethernet ring network breaks down when restarting, and can not effectively ensure the network reliability service.
Summary of the invention
The embodiment of the invention provides a kind of method and device that ensures the ethernet ring network reliability service, has solved when host node restarts in the ethernet ring network in the prior art, can not ensure the problem of ethernet ring network reliability service effectively.
A kind of method that ensures the ethernet ring network reliability service comprises:
After restarting, obtains host node in the ethernet ring network network state and network configuration information before restarting;
Described host node blocks the control VLAN and the data forwarding function of protecting service VLAN of the ring upper port of self, and described ring upper port is added control VLAN and protects service VLAN; Described ring upper port comprises master port and from port;
The data forwarding function of the control VLAN of open described ring upper port, whether the Link State that detects described ethernet ring network is intact; If, the protection service VLAN data forwarding function of only open described master port; Otherwise the protection service VLAN data forwarding function of open described ring upper port; And
The notice ring is gone up other node updates mac address tables.
According to said method of the present invention, described network state and the network configuration information that obtains before restarting comprises:
Obtaining the network state of restarting preceding described ethernet ring network is serviceable condition or malfunction;
Obtain restart before described ring upper port be respectively open state or blocked state; And
Obtain control VLAN that self adds before restarting and the recorded information of protecting service VLAN.
According to said method of the present invention, control VLAN and protection service VLAN described described ring upper port is added, and comprising:
Described ring upper port is added successively in all described protection service VLAN of described control VLAN and configuration, finish until whole addings; Or initiatively described ring upper port is added described control VLAN, described ring upper port is added successively in all described protection service VLAN of configuration again.
According to said method of the present invention, described with behind described ring upper port adding control VLAN and the protection service VLAN, also comprise:
Judge whether to have added fully all described protection service VLAN of described control VLAN and configuration in the mode of scanning; after scanning confirms to have added fully described control VLAN and protection service VLAN, carry out this step of data forwarding function of the control VLAN of open described ring upper port again.
According to said method of the present invention, whether the Link State of the described ethernet ring network of described detection is intact, specifically comprises:
Described master port periodically sends health detection hello frame, transfers to described from port in turn in other node of described ethernet ring network by described control VLAN; And
Whether receive described hello frame according to described from port, determine whether the Link State of described ethernet ring network is intact;
If described, the protection service VLAN data forwarding function of only open described master port; Otherwise the protection service VLAN data forwarding function of open described ring upper port specifically comprises:
, when having received described hello frame, port determines and the current network state that writes down described ethernet ring network is a serviceable condition, the protection service VLAN data forwarding function of only open described master port when described; Or
When port does not receive described hello frame, determine and the current network state that writes down described ethernet ring network is a malfunction open described master port and from the protection service VLAN data forwarding function of port when described.
Said method of the present invention also comprises:
Obtain when restarting preceding network state and network configuration information, the current network state that writes down described ethernet ring network is a rebooting status.
A kind of device that ensures the ethernet ring network reliability service is arranged in the host node of ethernet ring network, comprising:
Acquisition module is used to obtain network state and network configuration information before restarting;
Add Executive Module, be used for the ring upper port of self is added control VLAN and protection service VLAN; Described ring upper port comprises master port and from port;
Detection module, whether the Link State that is used to detect described ethernet ring network is intact;
The port status control module after being used for described acquisition module and getting access to described network state and network configuration information, is blocked the data forwarding function of the control VLAN and the protection service VLAN of described ring upper port; After described adding Executive Module adds described ring upper port control VLAN and protection service VLAN, the control vlan data forwarding capability of open described ring upper port; And the testing result of described detection module is when being, the protection service VLAN data forwarding function of open described master port only, otherwise the protection service VLAN data forwarding function of open described ring upper port;
Notification module is used for described port status control module according to the open described ring upper port of testing result or after only opening the protection service VLAN data forwarding function of described master port, notifies ring to go up other node updates mac address tables.
Said apparatus of the present invention also comprises:
Judge module; be used for judging whether to have added fully all described protection service VLAN of described control VLAN and configuration in the mode of scanning; after scanning confirms to have added fully described control VLAN and protection service VLAN, notify described port status control module.
According to said apparatus of the present invention, described adding Executive Module comprises:
First performance element adds described ring upper port in all described protection service VLAN of described control VLAN and configuration successively, finishes until whole addings;
Second performance element is used for earlier described ring upper port being added described control VLAN, will encircle in all described protection service VLAN that upper port adds configuration successively again.
The method and the device of the guarantee ethernet ring network reliability service that the embodiment of the invention provides, the data forwarding function of when host node restarts, blocking the control VLAN and the protection service VLAN of host node ring upper port by elder generation, after will encircling upper port and adding control VLAN and protection service VLAN fully, the control vlan data forwarding capability of open loop upper port again; Whether the Link State that detects ethernet ring network then is intact, and according to the open described ring upper port of testing result or the protection service VLAN data forwarding function of open described master port only.In the process that host node restarts, can either avoid forming loop, can avoid again opening circuit, thus the disabled problem of network of effectively having avoided the host node restarting process to cause, improve the fault-resistant ability of ethernet ring network, strengthened the reliability and stability of ethernet ring network.
Description of drawings
Fig. 1 is the structural representation of ethernet ring network automatic protective system in the prior art;
Fig. 2 is the flow chart of a kind of network operation support method after host node breaks down in the prior art;
Fig. 3 is the flow chart of another kind of network operation support method after host node breaks down in the prior art;
Fig. 4 is the flow chart of ethernet ring network reliability service support method in the embodiment of the invention;
Fig. 5 is the structural representation of ethernet ring network reliability service ensuring equipment in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method that ensures the ethernet ring network reliability service, when being used for host node and restarting, increases a kind of ethernet ring network state on the basis of RFC3619, i.e. rebooting status (Link-Start-State) guarantees the reliability service of network.Wherein, the structure of a domain logic can be referring to Fig. 1 in the ethernet ring network, and wherein, the number of node is decided according to the actual requirements in each territory, is not limited to four shown in Fig. 1, but the host node in each territory has and only have one.S2 is a host node among Fig. 1, and S1, S3 and S4 are transmission nodes, the ring upper port of S2---master port (P) and from port (S) as shown in fig. 1, two ports (1,2) of transmission node are regardless of the principal and subordinate.When link was intact, the Link State of nodes records was serviceable condition (Link-Up-State) on the ring, and during link occurs fault, the Link State of nodes records is malfunction (Link-Down-State) on the ring.
The method flow of the guarantee ethernet ring network reliability service that the embodiment of the invention provides as shown in Figure 4, when host node in the ethernet ring network breaks down need restart the time, execution in step is as follows:
Step S101: host node restarts.
For example: the S2 node among Fig. 1 breaks down, and restarts.
Step S102: host node starts network state and the network configuration information before the back obtains to restart.
Wherein, network state comprises: the network state of ethernet ring network is serviceable condition or malfunction before restarting; The ring upper port of this host node self is respectively open state or closed condition.Wherein, the ring upper port comprise on the host node master port and from port.
Configuration information comprises: the recorded information of control VLAN that self adds before host node is restarted and protection service VLAN.
Continue to use above-mentioned example, network state and network configuration information before host node S2 obtains and breaks down are to restart preceding network state so that recover the network state of ethernet ring network.
Especially, after the network state and network configuration information before host node obtains and restarts, the current looped network state of immediate record is rebooting status (Link-Start-State).
Step S103: the data forwarding function of the control VLAN of choke ring upper port and protection service VLAN.
The data forwarding function of the control VLAN of choke ring upper port and protection service VLAN, thus make that each port of host node can not receive the data that forward, and avoids forming loop before all control VLAN add successfully with the protection service VLAN.
Continue to use above-mentioned example, host node S2 blocks its port, comprising: master port (P) and from port (S), the data forwarding function.
Step S104: host node initiatively joins its ring upper port in control VLAN and the protection service VLAN.
Host node will encircle in all protection service VLAN that upper port adds control VLAN and configuration successively according to the restriction of hardware chip, finish until whole addings.
Especially, host node can be earlier adds control VLAN with the ring upper port, and all that will encircle again that upper port adds configuration are successively protected in service VLAN.To encircle upper port adding control VLAN earlier can effectively prevent the packet loss phenomenon to take place.
Preferably, host node can judge whether to have added fully control VLAN and protection service VLAN in the mode of scanning in this step, be specially: judge whether to have added fully control VLAN and protection service VLAN, if do not add fully, wait for that then the ring upper port adds among the described control VLAN and protection service VLAN that does not add, and return and continue to judge whether to add fully; When scanning confirms to have added fully all control VLAN and protection service VLAN, execution in step S105.
Continue to use above-mentioned example, host node S2 adds in the protection service VLAN of control VLAN and all configurations.
Step S105: after finishing adding, the control vlan data forwarding capability of host node open loop upper port.
At this moment, the protection service VLAN data forwarding function of master and slave port still keeps blocking.
Continue to use above-mentioned example, the master port of host node S2 (P), be opened, and the master port of host node S2 (P), still keep blocking from the protection service VLAN data forwarding function of port (S) from the control vlan data forwarding capability of port (S).
Step S106: whether the Link State that host node detects ethernet ring network is intact.
If then Link State is changed to serviceable condition (Link-Up-State), execution in step S107; If not, Link State is changed to malfunction (Link-Up-State), then returns step S108 and re-execute.
Host node is finished the protection service VLAN that adds control VLAN and all configurations; after opening the data forwarding function of control VLAN of master and slave port; master port periodically sends health detection hello frame; the hello frame transfers to from port in other node of ethernet ring network successively by control VLAN; when Link State is intact, host node can receive the health detection hello frame that master port sends over from port.Therefore whether host node has received the health detection hello frame of some according to it from port, judges whether Link State is intact.If received, determine that Link State is a serviceable condition, otherwise determine that Link State is a malfunction.
Continue to use above-mentioned example, the master port of host node S2 (P) periodically sends health detection hello frame, the port one of the port 2 of port one by transmission node S1 and port 2, transmission node S4 and port one, transmission node S3 and port 2 transfer to host node S2 from port (S).If received some health detection hello frames, think that then this Link State is intact, otherwise think that this link is a malfunction from port (S).
Step S107: the protection service VLAN data forwarding function of open master port, execution in step S109 then.At this moment, the protection service VLAN data forwarding function from port continues to keep blocking.
Continue to use above-mentioned example, the protection service VLAN data forwarding function of the open master port of host node S2 (P) is blocked from the protection service VLAN data forwarding function continuation maintenance of port (S).
Step S108: the protection service VLAN data forwarding function of open master and slave port, execution in step S109 then.
Continue to use above-mentioned example, the open master port (P) of host node S2 and from the protection service VLAN data forwarding function of port (S).
Step S109: the notice ring is gone up other node updates mac address tables.
Continue to use above-mentioned example, host node S2 notification transmission node S1, S3 and S4 upgrade mac address table.
Step S110: the host node restarting process finishes.
Continue to use above-mentioned example, host node S2 finishes restarting process.
The said method that provides according to the embodiment of the invention, can make up a kind of device that ensures the ethernet ring network reliability service, this device is arranged in the host node, being used for the ethernet ring network host node breaks down when restarting and to guarantee the reliability service of network, wherein, ethernet ring network comprises a host node and at least one transmission node, and this installs as shown in Figure 5, comprising: acquisition module 101, adding Executive Module 102, detection module 103, port status control module 104 and notification module 105.
Add Executive Module 102, be used for the ring upper port of self is added control VLAN and protection service VLAN.
Preferable, adding Executive Module 102, further can comprise: first performance element and second performance element.
First performance element is used for the ring upper port is added all protection service VLAN of controlling VLAN and configuration successively, finishes until whole addings.
Second performance element is used for will encircling earlier upper port and adds control VLAN, and all that will encircle again that upper port adds configuration are successively protected in service VLAN.
Port status control module 104, after being used for acquisition module 101 and getting access to network state and network configuration information, the data forwarding function of the control VLAN of choke ring upper port and protection service VLAN; After adding Executive Module 102 will encircle upper port adding control VLAN and protection service VLAN, the control vlan data forwarding capability of open loop upper port; And according to the protection service VLAN data forwarding function of the testing result open loop upper port of detection module 103 or only open master port.
When restarting, above-mentioned host node ensures the device of ethernet ring network reliability service; also comprise: judge module 106; be used for having judged whether to add fully all protection service VLAN of controlling VLAN and configuration in the mode of scanning; after scanning is confirmed to add control VLAN and protection service VLAN fully, notice port status control module 104.
The method and the device of the above-mentioned guarantee ethernet ring network reliability service that the embodiment of the invention provides; owing to when restarting, temporarily blocked master and slave port controlling VLAN and the data forwarding function of protecting service VLAN on the host node; guarantee that control VLAN and protection service VLAN can all normally add, and make a concrete analysis of as follows:
Because the protection service VLAN may have several thousand even several ten thousand, so process need regular hour that adds, after part was protected the service VLAN adding, if there is not the data forwarding function of the protection service VLAN of choke ring upper port, the possibility that forms loop was very big; If added control VLAN earlier; host node will detect Link State; receive health detection hello frame when host node from port; will think that Link State has recovered intact; the data forwarding function of protection service VLAN that will the choke ring upper port, this protection service VLAN that can cause again not having to add can not normally add.Processing method when the host node that adopts the embodiment of the invention to provide is restarted; the data forwarding function of blocking all control VLAN of master and slave port and protection service VLAN earlier; after adding all control VLAN and protection service VLAN fully, corresponding again opening or the data forwarding function that keeps blocking each port.
After adding, open all VLAN the control vlan data forwarding capability of master and slave port on the host node again, detect the ethernet ring network Link State, after host node is confirmed the intact still malfunction of link, determine whether open: when link is intact, then not open from the protection service VLAN data forwarding function of port; When link failure, then open.Host node determines that according to state its state from port blocks for opening still like this, make the data of protection service VLAN on looped network, have only a logical path that can be communicated with at most, thereby guarantee that effectively ethernet ring network neither can form loop, cause broadcast storm; Can guarantee as much as possible that again data normally transmit, avoid opening circuit.Prevented effectively in a period of time that fault is restarted, joined the unavailable situation of network that causes that may occur in the process of control VLAN and all protections service VLAN and take place; ensure the normal operation of ethernet ring network, improved the fault-resistant ability of ethernet ring network.
As seen the said method and the device that provide of the embodiment of the invention breaks down when restarting at host node, can ensure normal, stable, the operation reliably of network effectively, thereby improve the reliability of Network.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily, replace or be applied to other similar devices, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (9)
1. a method that ensures the ethernet ring network reliability service is characterized in that, comprising:
After restarting, obtains host node in the ethernet ring network network state and network configuration information before restarting;
Described host node blocks the control VLAN and the data forwarding function of protecting service VLAN of the ring upper port of self, and described ring upper port is added control VLAN and protects service VLAN; Described ring upper port comprises master port and from port;
The data forwarding function of the control VLAN of open described ring upper port, whether the Link State that detects described ethernet ring network is intact; If, the protection service VLAN data forwarding function of only open described master port; Otherwise the protection service VLAN data forwarding function of open described ring upper port; And
The notice ring is gone up other node updates mac address tables.
2. the method for claim 1 is characterized in that, described network state and the network configuration information that obtains before restarting comprises:
Obtaining the network state of restarting preceding described ethernet ring network is serviceable condition or malfunction;
Obtain restart before described ring upper port be respectively open state or blocked state; And
Obtain control VLAN that self adds before restarting and the recorded information of protecting service VLAN.
3. the method for claim 1 is characterized in that, control VLAN and protection service VLAN described described ring upper port is added, and comprising:
Described ring upper port is added successively in all described protection service VLAN of described control VLAN and configuration, finish until whole addings; Or
Earlier described ring upper port is added described control VLAN, described ring upper port is added successively in all described protection service VLAN of configuration again.
4. the method for claim 1 is characterized in that, and is described with behind described ring upper port adding control VLAN and the protection service VLAN, also comprises:
Judge whether to have added fully all described protection service VLAN of described control VLAN and configuration in the mode of scanning; after scanning confirms to have added fully described control VLAN and protection service VLAN, carry out this step of data forwarding function of the control VLAN of open described ring upper port again.
5. method as claimed in claim 3 is characterized in that, whether the Link State of the described ethernet ring network of described detection is intact, specifically comprises:
Described master port periodically sends health detection hello frame, transfers to described from port in turn in other node of described ethernet ring network by described control VLAN; And
Whether receive described hello frame according to described from port, determine whether the Link State of described ethernet ring network is intact;
If described, the protection service VLAN data forwarding function of only open described master port; Otherwise the protection service VLAN data forwarding function of open described ring upper port specifically comprises:
, when having received described hello frame, port determines and the current network state that writes down described ethernet ring network is a serviceable condition, the protection service VLAN data forwarding function of only open described master port when described; Or
When port does not receive described hello frame, determine and the current network state that writes down described ethernet ring network is a malfunction open described master port and from the protection service VLAN data forwarding function of port when described.
6. as the arbitrary described method of claim 1-5, it is characterized in that, also comprise:
Obtain when restarting preceding network state and network configuration information, the current network state that writes down described ethernet ring network is a rebooting status.
7. a device that ensures the ethernet ring network reliability service is characterized in that, is arranged in the host node of ethernet ring network, comprising:
Acquisition module is used to obtain network state and network configuration information before restarting;
Add Executive Module, be used for the ring upper port of self is added control VLAN and protection service VLAN; Described ring upper port comprises master port and from port;
Detection module, whether the Link State that is used to detect described ethernet ring network is intact;
The port status control module after being used for described acquisition module and getting access to described network state and network configuration information, is blocked the data forwarding function of the control VLAN and the protection service VLAN of described ring upper port; After described adding Executive Module adds described ring upper port control VLAN and protection service VLAN, the control vlan data forwarding capability of open described ring upper port; And the testing result of described detection module is when being, the protection service VLAN data forwarding function of open described master port only, otherwise the protection service VLAN data forwarding function of open described ring upper port;
Notification module is used for described port status control module according to the open described ring upper port of testing result or after only opening the protection service VLAN data forwarding function of described master port, notifies ring to go up other node updates mac address tables.
8. device as claimed in claim 7 is characterized in that, also comprises:
Judge module; be used for judging whether to have added fully all described protection service VLAN of described control VLAN and configuration in the mode of scanning; after scanning confirms to have added fully described control VLAN and protection service VLAN, notify described port status control module.
9. device as claimed in claim 8 is characterized in that, described adding Executive Module comprises:
First performance element is used for described ring upper port is added successively all described protection service VLAN of described control VLAN and configuration, finishes until whole addings;
Second performance element is used for earlier described ring upper port being added described control VLAN, will encircle in all described protection service VLAN that upper port adds configuration successively again.
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| CN102420737B (en) * | 2011-11-28 | 2015-07-15 | 浙江网新技术有限公司 | Method for processing failure in MRP (Media Redundancy Protocol) looped network and MRP looped network |
| CN103414604B (en) * | 2013-08-09 | 2016-07-20 | 杭州华三通信技术有限公司 | Based on leakage protection VLAN detection method and device in the ethernet ring network of RRPP |
| CN107993430B (en) * | 2017-12-05 | 2020-04-10 | 积成电子股份有限公司 | Method for improving stability of Ethernet PHY chip of concentrator |
| CN110247852A (en) * | 2019-07-08 | 2019-09-17 | 无锡锐格思信息技术有限公司 | Broadcasting packet is reduced to the method and apparatus of ethernet switching device CPU impact |
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