CN104202193B - The method of distributed protection link failure detection - Google Patents
The method of distributed protection link failure detection Download PDFInfo
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- CN104202193B CN104202193B CN201410449714.0A CN201410449714A CN104202193B CN 104202193 B CN104202193 B CN 104202193B CN 201410449714 A CN201410449714 A CN 201410449714A CN 104202193 B CN104202193 B CN 104202193B
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- fault detection
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Abstract
The present invention proposes a kind of method of distributed protection link failure detection, including：MEP fault detection status machine is configured on the line card that the master control borad and needs of interchanger detect, and MEP is configured to realize two protection links on two ports of the line card of interchanger, two ports are respectively main port and standby port；Start a fault detection status machine to be detected, other fault detection status machines are in halted state；When the fault detection status machine examination started, which measures malfunction, to change, other MEP fault detection status machine synchronized update is new malfunction.Data processing is distributed on the line card of interchanger by the method for distributed protection link failure detection of the present invention, and this takes the cpu resource of interchanger master control borad by greatly reducing；Also, the present invention provides protection link to detect the failure of forward-path, when wherein a certain bar physical link breaks down, data message can be forwarded by an other link.
Description
Technical field
The present invention relates to a kind of method of network device link detection, especially with respect to the link detecting of enterprise scale switches
Method.
Background technology
IEEE802.1ag agreements are mainly for detection of two layers of forward-path fault detect of the network equipment and management, its principle
It is briefly described as follows.
In the both ends for two layers of forward-path for needing to detect configuration MEP (Maintenance association End
Point, safeguard end points), afterwards, the MEP of one end sends CCM messages to the MEP of opposite end periodically, while detects and sent from opposite end
The CCM messages to come over, if sending the CCM that opposite end transmission is not received in the cycle at 3.5 times, then it is assumed that link breaks down,
Need advertising link failure.
The transmission cycle of CCM messages as defined in IEEE802.1ag agreements has：3.3ms、10ms、100ms、1s、10s、
1min、10min.Calculated by configuring 1024 MEP so that 1 second cycle sent CCM messages as an example, equipment needs to set to opposite end each second
Preparation send 1024 CCM messages, while handles 1024 CCM messages that opposite end sends over.If all by enterprise scale switches
Master control borad complete these processing, this can take the cpu resource of excessive master control borad, influence the stabilization of system.
The content of the invention
The technical problem that the present invention need to solve is to provide a kind of distributed protection link for reducing and taking master control borad cpu resource
The method of fault detect.
Above-mentioned in order to solve the problems, such as, the present invention devises a kind of method of distributed protection link failure detection, and it is wrapped
Include：Step 1：MEP fault detection status machine is configured on the line card that the master control borad and needs of interchanger detect, and is being exchanged
MEP is configured on two ports of the line card of machine to realize two protection links, two ports are respectively main port and standby end
Mouthful；Step 2：Start a fault detection status machine to be detected, other fault detection status machines are in halted state；Step 3：
When the fault detection status machine examination started, which measures malfunction, to change, other MEP fault detection status machine is synchronous
It is updated to new malfunction.
Further improved as of the invention, in the step 2, the fault detection status machine started first on main port enters
Row detection.
Further improve as of the invention, when the fault detection status machine on main port link occurs and switched, stop
Fault detection status machine on main port, start the fault detection status machine on standby port.
Further improved as of the invention, when the line card where two ports breaks down, start the failure of master control borad
Detect state machine.
Further improved as of the invention, described two ports are respectively on two line cards or positioned at same line card
On.
Data processing is distributed on the line card of interchanger by the method for distributed protection link failure detection of the present invention, and this will
Greatly reduce the cpu resource for taking interchanger master control borad；Also, the present invention provides two protection physical links to detect forwarding road
The failure in footpath, when wherein a certain bar physical link breaks down, data message can be turned by an other physical link
Hair.
Brief description of the drawings
Fig. 1 is the method schematic diagram of distributed protection link failure detection.
Embodiment
In order that relevant technical staff in the field more fully understands technical scheme, below in conjunction with accompanying drawing and reality
Mode is applied, the technical scheme in embodiment of the present invention is clearly and completely described, it is clear that described embodiment
Only a part of embodiment of the invention, rather than whole embodiments.
The invention provides a kind of method of distributed protection link failure detection, disposes MEP's on interchanger line card
Fault detection status machine, this just concentrates the CPU being distributed to by the CPU processing datas of master control borad on line card to complete by original, significantly
Degree, which is reduced, takes master control borad cpu resource, and stability is brought for the operation of switch system.
The method of distributed protection link failure detection of the present invention comprises the following steps：
Step 1：MEP fault detection status machine is configured on the line card that the master control borad and needs of interchanger detect.Such as
Shown in Fig. 1, interchanger of the invention is enterprise scale switches, including mainboard card and multiple line cards, in order to detect between interchanger
Two layers of forward-path it is whether normal, need to configure MEP fault detection status on the line card 1 and line card 2 that detect in interchanger
Machine 10, for carrying out fault detect, the present invention still configures MEP fault detection status machine 10 in master control borad, is to prevent
When the fault detection status machine deactivation of the MEP on line card, the fault detection status machine for enabling the MEP of master control borad is examined
Survey.Present invention also offers the failures that two protection links are used to detect two layers of forward-path, thus, the also line card in interchanger
Two ports on configure MEP with realize two protection links, two ports are respectively main port 20 and standby port 30.This
Two ports be able to can also be all located on same line card respectively on line card 1 and line card 2.Configuration completes one above
The interchanger at end is with postponing, it is also necessary to the interchanger of opposite end is configured, with netting twine by primary two ports and opposite end of interchanger
Primary two ports of interchanger connect so as to form two protection links, as shown in Figure 1 respectively.
Step 2：After interchanger has been configured, start a fault detection status machine and detected, when a fault detect
Operationally, other fault detection status machines are then in halted state to state machine.In embodiments of the present invention, start first primary
Fault detection status machine on port 20 is detected.When there is link and switched in the fault detection status machine on main port,
Stop the fault detection status machine on main port, the fault detection status machine started on standby port 30 is detected.Two
When line card where individual port breaks down, the fault detection status machine that can just start master control borad is detected, such as two ends
Mouth is located at same business board, and when extracting the business board, both links break down simultaneously, at this time starts MEP on master control borad
Fault detection status machine, and fault detection status machine is adjusted to the state of " link failure ".
Step 3：When the fault detection status machine examination started, which measures malfunction, to change, other MEP failure
Detection state machine synchronization is updated to new malfunction.The MEP that the present invention only starts fault detection status machine can just be detected
To the generation of link failure and the recovery of failure.MEP detects that failure needs the failure to two other position after changing
Detect the newest malfunction of state machine synchronization.So the fault detection status machine in halted state is occurring to protect chain originally
When road, which switches event or plate, pulls out plate event needs to start, can quickly it be adjusted according to malfunction synchronous here
State machine state corresponding to.
Data processing is distributed on the line card of interchanger by the method for distributed protection link failure detection of the present invention, and this will
Greatly reduce the cpu resource for taking interchanger master control borad.
The present invention provides two protection physical links to detect the failure of forward-path, when wherein a certain bar physical link goes out
Existing failure, data message can be forwarded by an other physical link.If the forward-path of data is connection,
MEP will not reporting fault alarm.So, would not be because protecting a certain bar link of link to break down and reporting fault alarm.
Only express one embodiment of the present invention above, its describe it is more specific and in detail, but can not therefore and
It is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, do not taking off
On the premise of present inventive concept, various modifications and improvements can be made, these belong to protection scope of the present invention.Cause
This, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
- A kind of 1. method of distributed protection link failure detection, it is characterised in that comprise the following steps：Step 1：MEP fault detection status machine is configured on the line card that the master control borad and needs of interchanger detect, and is being handed over MEP is configured on two ports of the line card changed planes to realize two protection links, two ports are respectively main port and standby Port；Step 2：Start a fault detection status machine to be detected, other fault detection status machines are in halted state；Step 3：When the fault detection status machine examination started, which measures malfunction, to change, other MEP fault detect State machine synchronization is updated to new malfunction.
- 2. the method for distributed protection link failure detection according to claim 1, it is characterised in that in the step 2, The fault detection status machine started first on main port is detected.
- 3. the method for distributed protection link failure detection according to claim 2, it is characterised in that on main port Fault detection status machine when link occur and switching, stop the fault detection status machine on main port, start on standby port Fault detection status machine.
- 4. the method for distributed protection link failure detection according to claim 3, it is characterised in that in two port institutes Line card break down when, start the fault detection status machine of master control borad.
- 5. the method for distributed protection link failure detection according to claim 1, it is characterised in that described two ports Respectively on two line cards or on same line card.
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| CN201410449714.0A CN104202193B (en) | 2014-09-05 | 2014-09-05 | The method of distributed protection link failure detection |
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| CN201410449714.0A CN104202193B (en) | 2014-09-05 | 2014-09-05 | The method of distributed protection link failure detection |
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| CN104202193A CN104202193A (en) | 2014-12-10 |
| CN104202193B true CN104202193B (en) | 2018-03-27 |
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| CN106961353A (en) * | 2017-03-30 | 2017-07-18 | 重庆金美通信有限责任公司 | A kind of large-scale communication network network route exchange device hardware fault inline diagnosis and batch gathering method |
| CN108650134B (en) * | 2018-05-14 | 2021-06-04 | 周怡颋 | Network fault positioning method and device and electronic equipment |
| CN115065590B (en) * | 2022-06-28 | 2023-05-26 | 烽火通信科技股份有限公司 | Method and device for realizing linear protection of distributed dual-state machine |
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| CN101217424A (en) * | 2008-01-21 | 2008-07-09 | 中兴通讯股份有限公司 | A detecting method and device of aggregated link failures |
| CN101471814A (en) * | 2007-12-28 | 2009-07-01 | 华为技术有限公司 | Automatic protection switching system and method |
| CN101753368A (en) * | 2008-12-01 | 2010-06-23 | 中兴通讯股份有限公司 | A kind of guard method of Ethernet |
| CN102014019A (en) * | 2010-11-04 | 2011-04-13 | 中兴通讯股份有限公司 | Aggregated link switching method and device |
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2014
- 2014-09-05 CN CN201410449714.0A patent/CN104202193B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471814A (en) * | 2007-12-28 | 2009-07-01 | 华为技术有限公司 | Automatic protection switching system and method |
| CN101217424A (en) * | 2008-01-21 | 2008-07-09 | 中兴通讯股份有限公司 | A detecting method and device of aggregated link failures |
| CN101753368A (en) * | 2008-12-01 | 2010-06-23 | 中兴通讯股份有限公司 | A kind of guard method of Ethernet |
| CN102014019A (en) * | 2010-11-04 | 2011-04-13 | 中兴通讯股份有限公司 | Aggregated link switching method and device |
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Effective date of registration: 20201216 Address after: 313028 Industrial Park, balidian Town, Huzhou City, Zhejiang Province Patentee after: HUZHOU FENGYUAN AGRICULTURAL EQUIPMENT MANUFACTURE Co.,Ltd. Address before: 201616 No. 3666 Sixian Road, Songjiang District, Shanghai Patentee before: Phicomm (Shanghai) Co.,Ltd. |
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