CN108965027A - A kind of CES service nondestructive transfer approach - Google Patents
A kind of CES service nondestructive transfer approach Download PDFInfo
- Publication number
- CN108965027A CN108965027A CN201810905800.6A CN201810905800A CN108965027A CN 108965027 A CN108965027 A CN 108965027A CN 201810905800 A CN201810905800 A CN 201810905800A CN 108965027 A CN108965027 A CN 108965027A
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- ces
- service message
- ces service
- message
- paths
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
- H04L41/065—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis involving logical or physical relationship, e.g. grouping and hierarchies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
Abstract
The present invention provides a kind of CES service nondestructive transfer approach, specifically includes that 1) CES service message while being sent on active and standby two paths and is transmitted；2) receiving side receives CES service message from active and standby two paths simultaneously；3) receiving side packet buffer area handles received CES service message, processing method includes SN testing mechanism: the CES service message of desired sequence number is received from any paths, it puts it among packet buffer area, later if having received the CES service message of same SN from an other paths again, the CES service message received below is abandoned；4) the CES service message in packet buffer area is sent to user equipment, to realize the lossless transmission of CES business.
Description
Technical field
The present invention relates to a kind of circuit emulation service (CES business) lossless transfer approach.More specifically, in this method
In, a kind of new CES business treatment technique in SPN (slice grouping net) or PTN (Packet Transport Network) network is introduced, is related to
And the trail protection to CES business, the message lossless process of CES business.
Background technique
Circuit emulation service (CES business) is widely used in SPN/PTN network, is a kind of to lead to traditional circuit signal
Cross the technology of Ethernet service transmission.Including following functions:
1, Ethernet service message is converted by TDM electric signal or PCM signal.
2, it supports to transmit CES service message in PSN network.
3, CES service protection is supported, it will usually main path is established in PSN network, backup path carries out CES business
Protection.
4, for CES 1+1 protection, service message transmits on main path and backup path simultaneously, but only in active
CES service message is received on path.
5, protection switch time is required less than 50 milliseconds.When certain paths breaks down, an other road can be switched to
On diameter, to ensure the reliable transmission of business.
6, it can satisfy most of CES business transmission to require.
But above-mentioned business transmission mode has the following disadvantages:
1, CES service message processing module can only receive message on the path active, and any failure leads to active and standby path
When switching, having a regular hour can not receive CES service message.
2, active and standby path switching process, it is desirable that switching time is less than 50 milliseconds, therefore can have the business less than 50 milliseconds
Trauma time.
3, it is not used to transmitting reliability and requires high business.Such as the switching value of control system, it is any loss or
The switch of mistake indicates, is likely to lead to serious consequence.
Summary of the invention
Present invention aim to address posed problems above, a kind of CES service nondestructive transfer approach are provided, for CES
Transfer approach of the business in SPN or PTN network carries out the double receipts of double hairs to CES business on active and standby two paths, then
Receiving side packet buffer area handles received CES service message, so that the CES service message in buffer area does not repeat,
It does not lose.In this way, as long as normal CES service message can be received from any paths, it will be able to guarantee business
Normal processing, to realize the lossless transmission of CES business, solves 50 milliseconds of industry when traditional CES service path pretection switch
The problem of business damage.
The present invention is achieved by the following technical solutions:
The present invention is a kind of CES service nondestructive transfer approach, is specifically included that
1) CES service message is sent on active and standby two paths is transmitted simultaneously；
2) receiving side receives CES service message from active and standby two paths simultaneously；
3) receiving side packet buffer area handles received CES service message, and processing method includes SN testing mechanism:
The CES service message that desired sequence number (SN) is received from any paths, puts it among packet buffer area, later
If having received the CES service message of same SN from an other paths again, the CES service message received below is abandoned；
4) the CES service message in packet buffer area is sent to user equipment.
As optimization, active and standby two paths are as follows:
1.1) active/standby two service paths in slice grouping net SPN；
1.2) active/standby two service paths or in Packet Transport Network PTN.
As optimization, when the receiving side receives CES service message from active and standby two paths simultaneously:
2.1) CES service message not just is received from the current path Active；
2.2) CES service message is received simultaneously from active and standby two paths；
2.3) active and standby path switching does not influence the reception of CES service message.
As optimization, receiving side packet buffer area to received CES service message processing method the following steps are included:
3.1) it is slow to put it into message for the CES service message that desired sequence number (SN) is received from any paths
It deposits among area；
If 3.2) have received the CES service message of same sequence number (SN) after from an other paths again, lose
Abandon the CES service message received below；
3.3) the CES service message that verifying receives has correct MAC Address, message length, load type, it is ensured that report
Literary buffer area has always and only a correctly CES service message, realizes the transmission of CES service nondestructive；
As optimization, the CES service message in the packet buffer area be sent to user equipment the following steps are included:
4.1) CES service message content is parsed；
4.2) CES service message is converted into electric signal and gives TDM equipment or PCM equipment.
As optimization, when the receiving side receives CES service message from active and standby two paths simultaneously:
5.1) any paths interrupt, and still are able to receive normal CES service message from an other paths；
5.2) the CES service message on any paths is because of the delay of CES service message, shake caused by network cause,
It still is able to receive normal CES service message from an other paths；
5.3) when receiving CES service message simultaneously from active and standby two paths simultaneously, it is not limited to the type of service path.
As optimization, the true message protects the method that buffer area has always and there was only a correctly message, specifically includes that
3.3.1) SN testing mechanism of the CES service message in packet buffer area, it is ensured that the message of identical SN is in buffer area
In do not repeat, do not lack；
3.3.2) the CES service message that verifying receives has correct MAC Address, message length, load type, with true
Protect the mechanism of unique correctness of the CES service message in packet buffer area.
Beneficial effects of the present invention are as follows:
1, the CES service message of the end-to-end transmission of the present invention, can be protected by different transmitting paths.
2, the present invention is transmitted by CES service nondestructive, and TDM signal or the lossless transmission of PCM signal may be implemented.
3, main path and backup path of the present invention can be planned to different equipment, avoid two paths and meanwhile failure can
Energy property, to achieve the purpose that CES service nondestructive transmits.
As long as 4, the present invention can normally receive CES service message from any paths, it will be able to guarantee business without
Damage transmission.
5, application extra high for reliability requirement, the instruction of any loss or mistake are likely to cause serious
Consequence, the method provided through the invention can accomplish reliably to transmit.
6, for the special private network market with high reliability request, the present invention has great importance.
7, it is active and standby to be inevitably generated to changing when the present invention successfully solves traditional active and standby trail protection CES business
Service damage problem less than 50 milliseconds.
8, the present invention successfully solves traditional CES tranmission techniques, because of the network jitter or delay production of certain chain road
Raw service damage problem.
Detailed description of the invention
Fig. 1: CES service message caching mechanism；
Fig. 2: CES service nondestructive treatment mechanism；
Fig. 3: CES service nondestructive transport model；
Fig. 4: CES business is transmitted through MPLS network；
Fig. 5: CES business is through PB transmission of network.
Specific embodiment
The embodiment of the present invention is further elaborated with reference to the accompanying drawing:
The english abbreviation in specification is tabulated first:
Existing CES service message caching mechanism causes the principle of service damage, as shown in Figure 1:
1, the processing of CES service message (CES Packet) needs a caching mechanism, the CES received from PSN network
Service message is first put into CES service message buffer area (CES Packet Buffer).
2, CES service message is put among packet buffer area, there is a desired SN.For example receive the report of SN=103
Expectation is received the message of SN=104, followed by the message of SN=105 by Wen Hou, system.
If 3, not receiving the message of SN=104 and SN=105, or first have received message (such as the SN of other SN
=106, SN=107), then system can be should belong to SN=104 in packet buffer, the position of SN=105, and first label is
White message (Gap).
If 4, having received SN=104 again later, the message of SN=105 then still can be put into the message desired position
It sets.
5, CES Service Processing Module can be converted into the content in CES service message electric signal and successively give E1 electricity
Road.But SN=104 is sent if taken turns to, when the message of SN=105, which is still Gap, then can be with preset
Filling data (Fill data) is sent to E1 circuit.
6, when appearance is sent to E1 circuit with filling data, then mean that message is not sent to normally, business occur
Damage.
CES service nondestructive treatment mechanism of the present invention, as shown in Figure 2:
1, allow to receive CES service message simultaneously from active and standby path.
2, no matter from main path CES service message is received, or receives CES service message from backup path, as long as from certain
One path has received the message of desired SN, is placed in packet buffer area.It is duplicate that SN is received from another paths later
Message then abandons the CES service message.For example, main path receives the message of SN=103, backup path is received again by SN=
103 message belongs to duplicate message, then abandons；Main path does not receive the message of SN=104, and backup path receives SN=104's
The message of SN=104 is then put into packet buffer area by message.
3, after using the mechanism, CES service protection can be using the double mechanism received of double hairs.
4, no matter from main path or from backup path CES service message is received, it is slow that message can be properly placed message
Area is deposited, packet loss will not be all caused.
As long as 5, ensure that the integrality of message among CES service message buffer area, it will be able to guarantee that CES service nondestructive passes
It send.
CES service nondestructive transport model of the present invention, as shown in Figure 3:
1, in terms of source, CES1 equipment sends main path and backup path simultaneously for CES service message, through PSN network
It is sent to receiving end CES2 equipment.
2, in terms of receiving end, CES2 equipment receives CES1 business report through PSN network, while from main path and backup path
Text.
3, to receiving end CES2 equipment, the CES of desired SN is either first received from main path or first from backup path
Service message is all put among CES packet buffer area.Later if receiving the duplicate CES service message of SN, directly abandon
It.
4, CES2 equipment does not have to be concerned about the CES service message received from which paths.
If 5, a certain paths temporarily fail, perhaps there is temporary packet loss or has shake that message delay is caused to reach,
Using traditional CES technology, receiving side packet loss will be led to because of path switching or network delay, shake etc..And use this
The method provided is invented, receiving end still is able to receive normal CES service message from an other paths, therefore business passes
It send and does not damage.
6, what the present invention protected is the lossless process mechanism of CES equipment, and being not relevant for intermediate SPN PTN network is
MPLS network or PB network.
The present invention is a kind of CES service nondestructive transfer approach, is specifically included that
1) CES service message is sent on active and standby two paths is transmitted simultaneously；
Active and standby two paths are as follows:
1.1) active/standby two service paths in slice grouping net SPN；
1.2) active/standby two service paths or in Packet Transport Network PTN.
2) receiving side receives CES service message from active and standby two paths simultaneously；
When receiving side receives CES service message from active and standby two paths simultaneously:
2.1) CES service message not just is received from the current path Active；
2.2) CES service message is received simultaneously from active and standby two paths；
2.3) active and standby path switching does not influence the reception of CES service message.
2.4) any paths interrupt, and still are able to receive normal CES service message from an other paths；
2.5) the CES service message on any paths is because of the delay of CES service message, shake caused by network cause,
It still is able to receive normal CES service message from an other paths；
2.6) method for receiving CES service message simultaneously from active and standby two paths simultaneously, is not limited to the kind of service path
Class.
3) receiving side packet buffer area handles received CES service message, processing method the following steps are included:
3.1) the CES service message that desired SN is received from any paths, puts it among packet buffer area；
If 3.2) have received the CES service message of same SN after from an other paths again, abandons and receive below
The CES service message arrived；
3.3) the CES service message that verifying receives has correct MAC Address, message length, load type, it is ensured that report
Literary buffer area has always and only a correctly CES service message, realizes the transmission of CES service nondestructive；
True message protects the method that buffer area has always and there was only a correctly message, specifically includes that
3.3.1) SN testing mechanism of the CES service message in packet buffer area, it is ensured that the message of identical SN is in buffer area
In do not repeat, do not lack；
3.3.2) the CES service message that verifying receives has correct MAC Address, message length, load type, with true
Protect the mechanism of unique correctness of the CES service message in packet buffer area.
4) the CES service message in packet buffer area is sent to user equipment, comprising the following steps:
4.1) CES service message content is parsed；
4.2) CES service message is converted into electric signal and gives TDM equipment or PCM equipment.
Embodiment:
The transmission of CES service nondestructive, transmission network can be SPN network or PTN network；SPN network or PTN network
Implementation can be based on MPLS network technology, can also be based on PB network technology, i.e., simultaneously from active and standby two paths simultaneously
The method for receiving CES service message, is not limited to the type of service path.
Typical MPLS network is as shown in Figure 4:
1, in PE1 node, CES service message is given to active and standby two service path PW (PW1 and PW2) simultaneously；
2, two service path PW (PW1 and PW2) are done active and standby service path to CES business and are protected；
3, PE2 receives CES service message from two service path PW (PW1 and PW2) simultaneously in receiving side；
4, PE2 all gives CES module from the message that two service path PW (PW1 and PW2) receive；
5, CES module carries out service nondestructive processing；The CES service message of desired SN is received from any paths,
It puts it among packet buffer area；Later if having received the CES business report of same SN (SN) from an other paths again
Text then abandons the CES service message received below；
6, the correctness of CES module checking prediction message: detect the MAC Address of the CES service message received, message length,
Load type, only correct message can just be put into message buffer, it is ensured that packet buffer area has always and only portion is correct
CES service message；
7, CES service message is converted to electric signal and gives TDM equipment or PCM equipment by CES module.
Typical PB network is as shown in Figure 5:
1, CES service message is broadcast to two service paths of Leaf1, Leaf2 by PE1 simultaneously；
2, two service path Leaf (Leaf1 and Leaf2) are done active and standby service path to CES business and are protected；
3, PE2 receives CES service message from two service path Leaf (Leaf1 and Leaf2) simultaneously in receiving side；
4, PE2 all gives CES module from the message that two service path Leaf (Leaf1 and Leaf2) receive；
5, CES module carries out service nondestructive processing；The CES service message of desired SN is received from any paths,
It puts it among packet buffer area；Later if having received the CES service message of same SN from an other paths again,
Abandon the CES service message received below；
6, the correctness of CES module checking prediction message: detect the MAC Address of the CES service message received, message length,
Load type, only correct message can just be put into message buffer, it is ensured that packet buffer area has always and only portion is correct
CES service message；
7, CES service message is converted to electric signal and gives TDM equipment or PCM equipment by CES module.
What has been described above is only a preferred embodiment of the present invention, it is noted that for common skill in the art
For art personnel, under the premise of not departing from core technical features of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (7)
1. a kind of CES service nondestructive transfer approach, which is characterized in that specifically include that
1) CES service message is sent on active and standby two paths is transmitted simultaneously；
2) receiving side receives CES service message from active and standby two paths simultaneously；
3) receiving side packet buffer area handles received CES service message, and processing method includes SN testing mechanism: from appoint
What paths receives the CES service message of desired SN, puts it among packet buffer area, later if again from addition
The CES service message that same SN is had received on one paths then abandons the CES service message received below；
4) the CES service message in packet buffer area is sent to user equipment.
2. CES service nondestructive transfer approach according to claim 1, which is characterized in that active and standby two paths are as follows:
1.1) active/standby two service paths in slice grouping net SPN；
1.2) active/standby two service paths or in Packet Transport Network PTN.
3. CES service nondestructive transfer approach according to claim 1, which is characterized in that the receiving side is simultaneously from active and standby
When receiving CES service message on two paths:
2.1) CES service message not just is received from the current path Active；
2.2) CES service message is received simultaneously from active and standby two paths；
2.3) active and standby path switching does not influence the reception of CES service message.
4. CES service nondestructive transfer approach according to claim 1, which is characterized in that receiving side packet buffer area
To received CES service message processing method the following steps are included:
3.1) the CES service message that desired SN is received from any paths, puts it among packet buffer area；
If 3.2) have received the CES service message of same SN after from an other paths again, abandons and receive below
CES service message；
3.3) the CES service message that verifying receives has correct MAC Address, message length, load type, it is ensured that message is slow
Depositing area always has and only a correctly CES service message, realization CES service nondestructive transmit.
5. CES service nondestructive transfer approach according to claim 1, which is characterized in that the CES industry in the packet buffer area
Business message be sent to user equipment the following steps are included:
4.1) CES service message content is parsed；
4.2) CES service message is converted into electric signal and gives TDM equipment or PCM equipment.
6. CES service nondestructive transfer approach according to claim 3, which is characterized in that the receiving side is simultaneously from active and standby
When receiving CES service message on two paths:
5.1) any paths interrupt, and still are able to receive normal CES service message from an other paths；
5.2) the CES service message on any paths is because of the delay of CES service message, shake caused by network cause, still
Normal CES service message can be received from an other paths；
5.3) when receiving CES service message simultaneously from active and standby two paths simultaneously, it is not limited to the type of service path.
7. CES service nondestructive transfer approach according to claim 4, which is characterized in that the true message protects buffer area and begins
There is and only have the method for a correctly message eventually, specifically includes that
3.3.1) SN testing mechanism of the CES service message in packet buffer area, it is ensured that the message of identical SN in buffer area not
It repeats, does not lack；
3.3.2) the CES service message that verifying receives has correct MAC Address, message length, load type, to ensure to report
The mechanism of unique correctness of CES service message in literary buffer area.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112822048A (en) * | 2021-01-04 | 2021-05-18 | 烽火通信科技股份有限公司 | Method and system for realizing nondestructive protection switching |
| CN113542114A (en) * | 2020-04-20 | 2021-10-22 | 华为技术有限公司 | Route configuration method and route configuration device |
| CN114599053A (en) * | 2020-12-07 | 2022-06-07 | 中国移动通信集团山西有限公司 | Networking and networking protection method |
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| CN101257441A (en) * | 2008-02-29 | 2008-09-03 | 华为技术有限公司 | Method, equipment and system for forwarding message as well as equipment for receiving message |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113542114A (en) * | 2020-04-20 | 2021-10-22 | 华为技术有限公司 | Route configuration method and route configuration device |
| CN113542114B (en) * | 2020-04-20 | 2022-11-11 | 华为技术有限公司 | Route configuration method and route configuration device |
| CN114599053A (en) * | 2020-12-07 | 2022-06-07 | 中国移动通信集团山西有限公司 | Networking and networking protection method |
| CN114599053B (en) * | 2020-12-07 | 2024-04-09 | 中国移动通信集团山西有限公司 | Networking and networking protection method |
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Application publication date: 20181207 |