CN105871613A - E1 service protection method and system - Google Patents
E1 service protection method and system Download PDFInfo
- Publication number
- CN105871613A CN105871613A CN201610200626.6A CN201610200626A CN105871613A CN 105871613 A CN105871613 A CN 105871613A CN 201610200626 A CN201610200626 A CN 201610200626A CN 105871613 A CN105871613 A CN 105871613A
- Authority
- CN
- China
- Prior art keywords
- transmission path
- path
- transmission
- link failure
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention provides an E1 service protection method and system. A first transmission path passing through a digital transmission network and a second transmission path passing through a data transmission network exist between a sending end and a receiving end of E1 service. The specific realization method comprises that the sending end sends E1 service data to the receiving end by the first transmission path and the second transmission path; when the master working path in the first transmission path and the second transmission path does not produce a link fault, the receiving end selects to receive the E1 service data sent by the master working path in the first transmission path and the second transmission path; and if it is detected that the master working path in the first transmission path and the second transmission path produces the link fault, the receiving end selects to receive the E1 service data sent by the backup working path in the first transmission path and the second transmission path. According to the method and the system, protection of cross transmission network types can be carried out on the E1 service.
Description
Technical field
The application relates to communication technical field, particularly to a kind of E1 service protecting method and system.
Background technology
Along with the development of communication technology, transmission network from digital transport network (such as SDH) to data transmission network (as
IPRAN/PTN) carrying out evolution, current transmission network is in SDH and PTN/IPRAN technology the stage deposited,
For telecom operators, having built large-scale SDH transmission network, IPRAN/PTN is then telecommunications fortune
The important construction object of battalion business.
In prior art, the protection to transmission business is all based on same transmission network, as being based on Digital Transmission
Net, or it is based on data transmission network.But, the transmission network coexisted due to current digital transport network and data transmission network
Network present situation, for meeting the different demands of communication service, improves the reliability of STN, to transmission business realizing
Protection across transmission network type becomes inevitable requirement.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of E1 service protecting method and system, it is possible to E1 business
Realize the protection across transmission network type.
For achieving the above object, the technical scheme that the present invention provides is:
A kind of E1 service protecting method, wherein, exists between transmitting terminal and the receiving terminal of E1 business and passes via numeral
The first of defeated net transmits path and the second transmission path via data transmission network, and the method includes:
E1 business datum is mail to described receiving terminal by the first transmission path and the second transmission path by described transmitting terminal；
When primary operating path in described first transmission path and the second transmission path does not occurs link failure, described
Receiving terminal selects to receive and transmits what the primary operating path in path was sent by described first transmission path and second
E1 business datum, if be detected that described first transmission path and the second primary operating path transmitted in path are sent out
Raw link failure, then select to receive the standby working ways by described first transmission path and the second transmission path
The E1 business datum that footpath is sent.
A kind of E1 service protection system, this system includes transmitting terminal and the receiving terminal of E1 business；Described transmitting terminal
And between receiving terminal, there is the first transmission path via digital transport network and the second transmission via data transmission network
Path, wherein,
Described transmitting terminal, for mailing to described by E1 business datum by the first transmission path and the second transmission path
Receiving terminal；
Described receiving terminal, for not sending out at the described first primary operating path transmitted in path and the second transmission path
During raw link failure, select to receive the primary working ways by described first transmission path and the second transmission path
The E1 business datum that footpath is sent, if be detected that the primary work in path is transmitted in described first transmission path and second
Make path occur link failure, then select receive by described first transmission path and second transmission path in standby
The E1 business datum sent with operating path.
In sum, in the present invention, using two transmission paths via different transmission networks as primary work
Path and standby operating path, transmitting terminal sends E1 business by primary operating path and standby operating path simultaneously
Data so that according to primary operating path, receiving terminal exists whether link failure carries out the choosing receipts of E1 business datum,
It is achieved thereby that protecting across transmission network type E1 business.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention E1 service protecting method flow chart；
Fig. 2 is embodiment of the present invention E1 service protection system architecture diagram.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, develop simultaneously embodiment referring to the drawings,
Scheme of the present invention is described in further detail.
In the present invention, both existed via digital transport network (such as SDH) between the transmitting terminal and receiving terminal of E1 business
Transmission path, when there is again the transmission path via data transmission network (such as PTN/IPRAN), transmitting terminal with
Time from two transmission paths send E1 business datums, by receiving terminal according to the primary working ways in two transmission paths
Whether footpath fault determines which transmission paths to receive E1 business datum, specifically, when making in two transmission paths from
When there is not link failure for the transmission path of primary operating path, select to receive E1 business from primary operating path
Data, when in two transmission paths as primary operating path transmission path occur link failure time, carry out chain
Road switches, and from two transmission paths, the transmission path as standby operating path receives E1 business datum.
Seeing Fig. 1, Fig. 1 is embodiment of the present invention E1 service protecting method flow chart, wherein, and sending out of E1 business
The first transmission path via digital transport network is there is and via the second of data transmission network between sending end and receiving terminal
Transmission path, the method mainly comprises the steps that
E1 business datum is mail to receive by step 101, transmitting terminal by the first transmission path and the second transmission path
End；
There is not chain in step 102, the receiving terminal primary operating path in the first transmission path and the second transmission path
During the fault of road, select to receive and transmit what the primary operating path in path was sent by the first transmission path and second
E1 business datum, if be detected that the primary operating path generation chain in path is transmitted in the first transmission path and second
Road fault, then select to receive and transmit what the standby operating path in path was sent by the first transmission path and second
E1 business datum.
After primary operating path generation link failure, receiving terminal performs link switching, receives from standby operating path
E1 business datum.
In actual applications, when, after the link failure recovery of primary operating path, receiving terminal can continue from standby work
Make path and receive E1 business datum, or, again perform link switching, again receive industry from primary operating path
Business data.If after the link failure recovery of primary operating path, need to switch back into primary operating path, then walk
Select to receive the standby operating path by described first transmission path and the second transmission path described in rapid 102 to send out
After the E1 business datum come, in addition it is also necessary to further primary in detection the first transmission path and the second transmission path
Whether the link failure of operating path recovers, if the primary working ways in path is transmitted in the first transmission path and second
The link failure recovery in footpath, the most reselection does not receives by described first transmission path and the second transmission path
The E1 business datum that standby operating path is sent, but select to receive by the first transmission path and the second transmission road
The E1 business datum that primary operating path in footpath is sent.
In the embodiment of the present invention shown in Fig. 1, the first transmission path and the second transmission path are respectively as primary work
Path and standby operating path, or, respectively as standby operating path and primary operating path.
In the embodiment of the present invention shown in Fig. 1, digital transport network can be SDH network, and data transmission network is PTN
Network or IPRAN network.Preferably, between transmitting terminal and the receiving terminal of E1 business, via digital transport network
The first transmission path as primary operating path, via the second transmission path of data transmission network as standby work
Make path.
In actual applications, E1 business datum transmitting procedure in SDH network is as follows: E1 through asynchronous mapping,
Justification, is loaded onto into standard virtual container at SDH network boundary, adds corresponding low order or high-order
Path overhead, such that it is able to be transmitted in SDH network, recover E1 at receiving terminal by demapping
Business datum, thus complete the transmission at SDH network of the E1 business datum.Path overhead therein includes enriching
Overhead byte, according to the particular content of each overhead byte in path overhead, it can be determined that E1 business is at SDH
Whether the transmission path in network there is link failure, if existed in the analysis result of such as path overhead
TU-LOP, TU-AIS and/or BIP2 mistakes etc., then may determine that the transmission in SDH network of the E1 business
Path there occurs link failure.
Therefore, in the embodiment of the present invention shown in Fig. 1, when digital transport network is SDH network, can be based on E1
Path overhead on business transmission path in SDH network carries out whether link failure judges, specifically, connects
Receiving end, when detecting the first transmission path and whether link failure occurring, can first obtain leading on the first transmission path
Road expense, and path overhead is resolved, if the analysis result of path overhead shows channel failure, the most really
There is link failure in fixed first transmission path, otherwise, it determines the first transmission path does not occurs link failure.
In actual applications, method for detecting connectivity can be used E1 business transmission road in data transmission network
Footpath carries out fault detect, can pass through E1 business transmission road in data transmission network between receiving terminal and transmitting terminal
It is mutual that footpath carries out connectivity testing message, if failing to receive the connective inspection that the other side sends in Preset Time
Observe and predict literary composition, then may determine that transmission path occurs link failure, otherwise determine that link does not sends link failure.Separately
Outward, when receiving terminal receives the wrong E1 service message (as CRC check makes mistakes) of excess from transmission path,
Or when from E1 service message, recovery E1 business datum is made mistakes, it is also possible to determine and there occurs chain on transmission path
Road fault.
Therefore, in the embodiment of the present invention shown in Fig. 1, receiving terminal can be by the second transmission path and described transmission
It is mutual that end carries out connectivity testing message, if receiving the wrong E1 service message exceeding predetermined number, from
E1 service message recovers E1 business datum make mistakes, or, in Preset Time, do not receive detection of connectivity
Message, it is determined that the second transmission path occurs link failure, otherwise, it determines there is not link in the second transmission path
Fault.
It practice, according to the difference of data transmission network, method for detecting connectivity also differs, such as, at PTN
In network, OAM technology can be used to carry out detection of connectivity, transmitting terminal and the receiving terminal of E1 business all enable
OAM(Operation Administration Maintenance), E1 business is in PTN network to utilize connectivity testing message corresponding for OAM to determine alternately
Whether transmission path sends link failure；And for example, in IPRAN network, BFD technology can be used to carry out even
The general character detects, and it is mutual, really that the transmitting terminal of E1 business and receiving terminal carry out connectivity testing message based on BFD agreement
Determine whether E1 business transmission path in IPRAN network sends link failure.
Above embodiment of the present invention E1 service protecting method is described in detail, present invention also offers one
E1 service protection system, is described in detail below in conjunction with Fig. 2.
Seeing Fig. 2, Fig. 2 is embodiment of the present invention E1 service protection system architecture diagram, and this system includes E1 business
Transmitting terminal and receiving terminal；Pass as in figure 2 it is shown, exist between the transmitting terminal of E1 business and receiving terminal via numeral
Defeated net first transmission path and via data transmission network second transmission path, wherein,
Described transmitting terminal, for mailing to described by E1 business datum by the first transmission path and the second transmission path
Receiving terminal；
Described receiving terminal, for not sending out at the described first primary operating path transmitted in path and the second transmission path
During raw link failure, select to receive the primary working ways by described first transmission path and the second transmission path
The E1 business datum that footpath is sent, if be detected that the primary work in path is transmitted in described first transmission path and second
Make path occur link failure, then select receive by described first transmission path and second transmission path in standby
The E1 business datum sent with operating path.
In the system of E1 service protection shown in Fig. 2,
Described receiving terminal detects that the primary operating path in described first transmission path and the second transmission path occurs
Link failure, selects to receive the standby operating path by described first transmission path and the second transmission path and sends out
After the E1 business datum come, it is further used for: if the master in path is transmitted in described first transmission path and second
With the link failure recovery of operating path, then select to receive by described first transmission path and the second transmission path
In the E1 business datum sent of primary operating path.
In the system of E1 service protection shown in Fig. 2,
Described first transmission path is primary operating path, and described second transmission path is standby operating path；
Or,
Described first transmission path is standby operating path, and described second transmission path is primary operating path.
In the system of E1 service protection shown in Fig. 2,
Described digital transport network is SDH network, and described data transmission network is PTN network or IPRAN network.
In the system of E1 service protection shown in Fig. 2,
When whether described receiving terminal detection the first transmission path occurs link failure, it is used for: obtain the first transmission path
On path overhead, path overhead is resolved, if the analysis result of path overhead shows channel failure,
Then determine that the first transmission path occurs link failure, otherwise, it determines the first transmission path does not occurs link failure；
When whether described receiving terminal detection the second transmission path occurs link failure, it is used for: by the second transmission path
Connectivity testing message is carried out alternately, if receiving the wrong E1 business exceeding predetermined number with described transmitting terminal
Message, recovers E1 business datum from E1 service message and makes mistakes, or, the not company of receiving in Preset Time
General character detection messages, it is determined that the second transmission path occurs link failure, otherwise, it determines the second transmission path is not
There is link failure.
In sum, in the specific embodiment of the invention, between the transmitting terminal and receiving terminal of E1 business, both there is warp
By the transmission path of digital transport network, when there is again the transmission path via data transmission network, by two transmission roads
Footpath is respectively as primary operating path and standby operating path, and transmitting terminal is simultaneously from primary operating path and standby work
Make path send E1 business datum so that receiving terminal can when there is not link failure in primary operating path, from
Primary operating path receives E1 business datum, when primary operating path generation link failure, from standby working ways
Footpath receives E1 business datum.It can be seen that the present invention makes full use of existing network characteristics, to business provide across
The protection of transmission network type so that transmission network can more reasonably be replaced and allocate resource, it is possible to industry
Business provides safer, protects efficiently, and it is simple to have use, high reliability, the particularly present invention
Can realize on same equipment, possess practicality.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, all should comprise
Within protection scope of the present invention.
Claims (10)
1. an E1 service protecting method, it is characterised in that exist between transmitting terminal and the receiving terminal of E1 business via
The first of digital transport network transmits path and the second transmission path via data transmission network, and the method includes:
E1 business datum is mail to described receiving terminal by the first transmission path and the second transmission path by described transmitting terminal；
When there is not link failure in the primary operating path in described first transmission path and the second transmission path, described in connect
Receiving end selects to receive the E1 industry sent by the primary operating path in described first transmission path and the second transmission path
Business data, if be detected that the primary operating path generation link event in path is transmitted in described first transmission path and second
Barrier, then select to receive the E1 sent by the standby operating path in described first transmission path and the second transmission path
Business datum.
Method the most according to claim 1, it is characterised in that
Described receiving terminal detects the primary operating path generation link in described first transmission path and the second transmission path
Fault, selects to receive the E1 sent by the standby operating path in described first transmission path and the second transmission path
After business datum, farther include: if the primary operating path in path is transmitted in described first transmission path and second
Link failure recovery, then select receive by described first transmission path and second transmission path in primary working ways
The E1 business datum that footpath is sent.
Method the most according to claim 1, it is characterised in that
Described first transmission path is primary operating path, and described second transmission path is standby operating path；
Or,
Described first transmission path is standby operating path, and described second transmission path is primary operating path.
Method the most according to claim 1, it is characterised in that
Described digital transport network is SDH network, and described data transmission network is PTN network or IPRAN.
Method the most according to claim 4, it is characterised in that
Whether detection the first transmission path occurs the method for link failure to be: obtain the path overhead on the first transmission path,
Path overhead is resolved, if the analysis result of path overhead shows channel failure, it is determined that the first transmission path
There is link failure, otherwise, it determines the first transmission path does not occurs link failure；
Whether detection the second transmission path occurs the method for link failure to be: by the second transmission path and described transmitting terminal
Carry out connectivity testing message mutual, if receiving the wrong E1 service message exceeding predetermined number, from E1 business
Message recovers E1 business datum make mistakes, or, in Preset Time, do not receive connectivity testing message, the most really
There is link failure in fixed second transmission path, otherwise, it determines the second transmission path does not occurs link failure.
6. an E1 service protection system, it is characterised in that this system includes transmitting terminal and the receiving terminal of E1 business；
The first transmission path via digital transport network is there is and via the of data transmission network between described transmitting terminal and receiving terminal
Two transmission paths, wherein,
Described transmitting terminal, for mailing to described reception by E1 business datum by the first transmission path and the second transmission path
End；
Described receiving terminal, for not occurring at the described first primary operating path transmitted in path and the second transmission path
During link failure, select to receive the primary operating path by described first transmission path and the second transmission path and send
E1 business datum, if be detected that described first transmission path and second transmission path in primary operating path send out
Raw link failure, then select to receive the standby operating path by described first transmission path and the second transmission path and send out
The E1 business datum come.
System the most according to claim 6, it is characterised in that
Described receiving terminal detects the primary operating path generation link in described first transmission path and the second transmission path
Fault, selects to receive the E1 sent by the standby operating path in described first transmission path and the second transmission path
After business datum, it is further used for: if the primary operating path in path is transmitted in described first transmission path and second
Link failure recovery, then select receive by described first transmission path and second transmission path in primary working ways
The E1 business datum that footpath is sent.
System the most according to claim 6, it is characterised in that
Described first transmission path is primary operating path, and described second transmission path is standby operating path；
Or,
Described first transmission path is standby operating path, and described second transmission path is primary operating path.
System the most according to claim 6, it is characterised in that
Described digital transport network is SDH network, and described data transmission network is PTN network or IPRAN network.
System the most according to claim 9, it is characterised in that
When whether described receiving terminal detection the first transmission path occurs link failure, it is used for: obtain the first transmission path
Path overhead, path overhead is carried out result parsing, if the analysis result of path overhead shows channel failure, then
Determine that the first transmission path occurs link failure, otherwise, it determines the first transmission path does not occurs link failure；
Described receiving terminal detection the second transmission path when whether there is link failure, is used for: by the second transmission path with
It is mutual that described transmitting terminal carries out connectivity testing message, if receiving the wrong E1 service message exceeding predetermined number,
From E1 service message, recover E1 business datum make mistakes, or, in Preset Time, do not receive detection of connectivity report
Literary composition, it is determined that the second transmission path occurs link failure, otherwise, it determines there is not link failure in the second transmission path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200626.6A CN105871613A (en) | 2016-03-31 | 2016-03-31 | E1 service protection method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200626.6A CN105871613A (en) | 2016-03-31 | 2016-03-31 | E1 service protection method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105871613A true CN105871613A (en) | 2016-08-17 |
Family
ID=56626727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610200626.6A Pending CN105871613A (en) | 2016-03-31 | 2016-03-31 | E1 service protection method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105871613A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107995008A (en) * | 2016-10-27 | 2018-05-04 | 中兴通讯股份有限公司 | A kind of service alarm processing method, apparatus and system |
| CN108111219A (en) * | 2017-11-22 | 2018-06-01 | 广州供电局有限公司 | Lossless switching method, device and the lossless switching PTN system of PTN network |
| CN110675614A (en) * | 2019-08-30 | 2020-01-10 | 许昌许继软件技术有限公司 | Transmission method of power monitoring data |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080279103A1 (en) * | 2007-05-10 | 2008-11-13 | Futurewei Technologies, Inc. | Network Availability Enhancement Technique for Packet Transport Networks |
| CN101729350A (en) * | 2009-12-11 | 2010-06-09 | 烽火通信科技股份有限公司 | Realizing method of PTN forward compatible MSTP ring network service channel protection |
| CN101944951A (en) * | 2010-08-30 | 2011-01-12 | 中兴通讯股份有限公司 | Method and device for switching back links between networks |
| CN102025437A (en) * | 2009-09-22 | 2011-04-20 | 中国移动通信集团公司 | Method, system and device for protection switching |
| CN102957554A (en) * | 2011-08-25 | 2013-03-06 | 中兴通讯股份有限公司 | Method and device for achieving coordinative protection of PTN (packet transport network) equipment and MSTP (multi-service transport platform) equipment |
| CN204465776U (en) * | 2015-02-15 | 2015-07-08 | 杭州初灵信息技术股份有限公司 | A kind of PTN device merging SDH network and PTN network |
-
2016
- 2016-03-31 CN CN201610200626.6A patent/CN105871613A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080279103A1 (en) * | 2007-05-10 | 2008-11-13 | Futurewei Technologies, Inc. | Network Availability Enhancement Technique for Packet Transport Networks |
| CN102025437A (en) * | 2009-09-22 | 2011-04-20 | 中国移动通信集团公司 | Method, system and device for protection switching |
| CN101729350A (en) * | 2009-12-11 | 2010-06-09 | 烽火通信科技股份有限公司 | Realizing method of PTN forward compatible MSTP ring network service channel protection |
| CN101944951A (en) * | 2010-08-30 | 2011-01-12 | 中兴通讯股份有限公司 | Method and device for switching back links between networks |
| CN102957554A (en) * | 2011-08-25 | 2013-03-06 | 中兴通讯股份有限公司 | Method and device for achieving coordinative protection of PTN (packet transport network) equipment and MSTP (multi-service transport platform) equipment |
| CN204465776U (en) * | 2015-02-15 | 2015-07-08 | 杭州初灵信息技术股份有限公司 | A kind of PTN device merging SDH network and PTN network |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107995008A (en) * | 2016-10-27 | 2018-05-04 | 中兴通讯股份有限公司 | A kind of service alarm processing method, apparatus and system |
| CN107995008B (en) * | 2016-10-27 | 2021-07-06 | 中兴通讯股份有限公司 | Service alarm processing method, device and system |
| CN108111219A (en) * | 2017-11-22 | 2018-06-01 | 广州供电局有限公司 | Lossless switching method, device and the lossless switching PTN system of PTN network |
| CN110675614A (en) * | 2019-08-30 | 2020-01-10 | 许昌许继软件技术有限公司 | Transmission method of power monitoring data |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8483050B2 (en) | Method and apparatus for ethernet ring protection | |
| JP4940616B2 (en) | Network monitoring method and network element | |
| US9270485B2 (en) | Method for ethernet ring protection | |
| US7872967B2 (en) | Apparatus and method for multi-protocol label switching label-switched path protection switching | |
| CN102006218B (en) | Tunnel protection method and device | |
| KR101271552B1 (en) | Method for signalling of data transmission path properties to a non-oam observent client | |
| US9515919B2 (en) | Method and apparatus for protection switching in packet transport system | |
| US8976681B2 (en) | Network system, network management server, and OAM test method | |
| CN103078791B (en) | OAM message processing method, equipment and system | |
| CN102088387B (en) | Tunnel protection method and device of ring network | |
| CN101854255A (en) | Method and system for protecting multiplex section in packet transport network | |
| CN109309530B (en) | Data transmission method and device | |
| CN106034045A (en) | Ethernet link failure positioning method, device and system | |
| CN105871613A (en) | E1 service protection method and system | |
| CN102611610B (en) | The method and system of a kind of many same paths tunnels centralized management | |
| CN105871614A (en) | Protection method and device of board cards in communication device | |
| CN101785256B (en) | Protection mechanisms for a communications network | |
| JP2009212863A (en) | Line status monitoring circuit, node, communication system, and failure occurrence determining method | |
| CN101453744A (en) | Service control method and apparatus | |
| CN103248508A (en) | Port protecting method, device and system | |
| CN102970221A (en) | Redundancy communication method among nodes based on multiple networks | |
| CN102843260B (en) | Channel protection method of looped network system with IP RAN (Internet Protocol-Radio Access Network) forward compatible with MSTP (Multi-Service Transport Platform) | |
| CN103095539B (en) | It is a kind of looped network is configured, the detection method and device of ring network fault | |
| CN101247287B (en) | Fault detection method of operation management maintenance mechanism | |
| CN100440770C (en) | Method for backward transmitting virtual cascade group far end flaw indication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |