CN106888142A - A kind of E1 dual-ring networks with ring self-healing function - Google Patents
A kind of E1 dual-ring networks with ring self-healing function Download PDFInfo
- Publication number
- CN106888142A CN106888142A CN201710138024.7A CN201710138024A CN106888142A CN 106888142 A CN106888142 A CN 106888142A CN 201710138024 A CN201710138024 A CN 201710138024A CN 106888142 A CN106888142 A CN 106888142A
- Authority
- CN
- China
- Prior art keywords
- interfaces
- data
- node
- primary node
- primary
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses the data that the E1 dual-ring networks with ring self-healing function, this primary node pass through the previous primary node of an E1 interfaces；2nd E1 interfaces are to the data after latter primary node transmission processe.The data that this primary node passes through the latter primary node of the 2nd E1 interfaces；To on an E1 interfaces, an E1 interfaces send the data of transparent transmission to previous primary node to the data penetration transmission of reception.In the state of there is link failure, the data loopback that previous primary node sends the 2nd E1 interfaces into the 2nd E1 interfaces data, data of the data loopback that latter primary node sends an E1 interfaces into an E1 interfaces.Each node of the looped network constitutes data flow direction opposite primary ring and standby ring by an E1 interfaces, the connection of the 2nd E1 interfaces；The data of primary ring are looped back to standby ring at the front nodal point of faulty link, and the data back transmission of standby ring is pass-through to the posterior nodal point of faulty link, it is ensured that communication is not disrupted.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of E1 dual-ring networks with ring self-healing function.
Background technology
There is the propagation delay time and transmission jitter of stabilization due to E1 transmission (i.e. the transmission link of 2.048M), thus it is high steady with it
It is qualitative to be widely used in communication field as transfer resource.
Circulated successively by an E1 circuits by several looped network nodes and connect and compose looped network.When a certain node on looped network is accounted for
During with a certain time slot voice call or data transfer, the receiving terminal (RX) of this node will receive the data of correspondence time slot, while
Data to be sent are sent from transmitting terminal (TX) with same time slot.The time slot that this website is not take up on looped network will be, it is necessary to will connect
The data that receiving end (RX) is received are gone out from the corresponding time slot transparent transmission of transmitting terminal (TX), so that website below is used.
However, existing looped network uses unilateral-ring structure, if E1 transmission line failures or node failure (including section
Power failure, deadlock, software fault, hardware fault of point etc.), whole looped network communication disruption will be caused.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes a kind of E1 dual-ring networks with ring self-healing function, the looped network
Each node is each configured with an E1 interfaces, the 2nd E1 interfaces；First E1 interfaces, second are each configured with by each node
The connection of E1 interfaces, constitutes data flow direction opposite primary ring and standby ring；In the state of it there is E1 link failures in looped network,
The forward and backward node of failure E1 links respectively by the 2nd E1 interfaces, the data loopback (LoopBack) of an E1 interfaces, on primary ring
Data standby ring is looped back at the front nodal point of failure E1 links, the transmission of data back on standby ring, on each node thoroughly
Pass until being received by failure E1 links posterior nodal point, when solving existing looped network generation line fault, what looped network communication was interrupted asks
Topic.
To achieve these goals, technical solution of the present invention is as follows：
A kind of E1 dual-ring networks with ring self-healing function, including some primary nodes for circulating connection successively.Each is primary
Node is each configured with an E1 interfaces, the 2nd E1 interfaces.This primary node passes through the previous primary node of an E1 interfaces
The data of transmission；This primary node is processed the data of an E1 interfaces, and by the 2nd E1 interfaces to latter master
With the data after node transmission processe.The data of the transmission that this primary node passes through the latter primary node of the 2nd E1 interfaces；
The 2nd E1 interfaces of this primary node to data be directly transparent on an E1 interfaces of this primary node, by first
E1 interfaces send the data after transparent transmission to previous primary node.In the state of there are E1 link failures in looped network, failure E1 links
The previous primary node data loopback that sends the 2nd E1 interfaces into the 2nd E1 interfaces data, after failure E1 links
Data of the data loopback that one primary node sends an E1 interfaces into an E1 interfaces.
Further, primary node includes E1 drive modules, FPGA module, CPU module.E1 drive modules are used to drive the
One E1 interfaces, the 2nd E1 interfaces.CPU module receives the link status signal that E1 drive modules send, and is believed according to the Link State
Number judge whether E1 links are normal, and in the state of this primary node occurs E1 link failures with adjacent primary node, control
FPGA module processed.FPGA module is connected with E1 drive modules.In the state of there are E1 link failures in looped network, failure E1 links
Previous primary node by FPGA module by the transmission data loopback of the 2nd E1 interfaces into the 2nd E1 interfaces reception data；Therefore
The latter primary node for hindering E1 links passes through FPGA module by transmission data loopback the connecing into an E1 interfaces of an E1 interfaces
Receive data.
Further, in the state of E1 link failures does not occur in looped network, the FPGA module of this primary node passes through first
TDM buses receive the receiving interface received data from an E1 interfaces, and FPGA module is processed the data, and will
Data are sent on the transmission interface of the 2nd E1 interfaces by the 2nd TDM buses after treatment.FPGA module passes through the 2nd TDM buses
Receive the receiving interface received data from the 2nd E1 interfaces, FPGA module and by the data penetration transmission to a TDM buses
On, it is sent on the transmission interface of an E1 interfaces by a TDM buses.In the state of there are E1 link failures in looped network,
The FPGA module of the previous primary node of failure E1 links will be treated to be sent in the data of the 2nd E1 interfaces by the 2nd TDM buses
Portion's loopback, FPGA module and by the data penetration transmission to a TDM buses is sent to an E1 interfaces by a TDM buses
On transmission interface.The FPGA module of the latter primary node of failure E1 links will be treated to be sent to an E1 by a TDM buses
The data internal loopback of interface, FPGA module is processed the data of loopback, and will the corresponding data for sending by the
Two TDM buses are sent on the receiving interface of the 2nd E1 interfaces.
Further, primary node includes the switching of the first multiselect one switch, the switching switch of the second multiselect one.This primary node
In the state of without node failure, the data that the transmission interface of the 2nd E1 interfaces of this primary node sends pass through the first multiselect one
Switching switch is sent on the receiving interface of an E1 interfaces of latter primary node.The hair of the first E1 interfaces of this primary node
The data that interface sends are sent to be connect by the reception that the second multiselect one switches the 2nd E1 interfaces that switch is sent to previous primary node
On mouth.In the state of being not keyed up or having power failure, the switching of the first multiselect one is switched this primary node this primary node
The data that the receiving interface of the first E1 interfaces is received are transmitted directly to the receiving interface of an E1 interfaces of latter primary node
On.Also, the data that the switching switch of the second multiselect one receives the receiving interface of the 2nd E1 interfaces of this primary node are direct
It is transferred on the receiving interface of the 2nd E1 interfaces of previous primary node.
Further, also including some secondary nodes.Secondary node is identical with the structure of primary node.Each secondary node
It is in parallel one by one with each primary node respectively.Secondary node is used to, in primary nodes break down connected in parallel, substitute the master
With the work of node.
Further, primary node, secondary node are opened comprising the switching of the first multiselect one switch, the switching of the second multiselect one respectively
Close.In the state of this primary node is without node failure, the data of the transmission interface transmission of the 2nd E1 interfaces of this primary node
Switch switch by the first multiselect one to be sent on the receiving interface of an E1 interfaces of latter primary node and secondary node.This
The data that the transmission interface of the first E1 interfaces of primary node sends are sent to previous primary by the switching switch of the second multiselect one
On the receiving interface of the 2nd E1 interfaces of node and secondary node.The switching of first multiselect one switch, more than second of this secondary node
A switching is selected to switch respectively that the transmission interface of the 2nd E1 interfaces, an E1 interfaces is hanging.
Further, in the state of this primary node has node failure, the switching of the first multiselect one of this primary node is opened
Pass, the switching switch of the second multiselect one are hanging by the transmission interface of the 2nd E1 interfaces, an E1 interfaces respectively.The of this secondary node
The data that the transmission interface of two E1 interfaces sends switch switch and are sent to latter primary node and standby section by the first multiselect one
On the receiving interface of the first E1 interfaces of point.The data that the transmission interface of the first E1 interfaces of this secondary node sends pass through second
The switching switch of multiselect one is sent on the receiving interface of the 2nd E1 interfaces of previous primary node and secondary node.
Further, in the state of this primary node, this secondary node power failure occur simultaneously, this primary node
After be transmitted directly to for the data that the receiving interface of the first E1 interfaces of this primary node is received by the switching switch of the first multiselect one
On the receiving interface of the first E1 interfaces of one primary node and secondary node.Also, the switching of the second multiselect one switch will be originally primary
The data that the receiving interface of the 2nd E1 interfaces of node is received are transmitted directly to the second of previous primary node and secondary node
On the receiving interface of E1 interfaces.Switching switch the connecing an E1 interfaces of this secondary node of first multiselect one of this secondary node
Receive interface to data be transmitted directly on the receiving interface of an E1 interfaces of latter primary node and secondary node.And
And, be transmitted directly to for the data that the receiving interface of the 2nd E1 interfaces of this secondary node is received by the switching switch of the second multiselect one
On the receiving interface of the 2nd E1 interfaces of previous primary node and secondary node.
Beneficial effects of the present invention：
(1) each node of the looped network is each configured with an E1 interfaces, the 2nd E1 interfaces；Each node passes through an E1
The connection of interface, the 2nd E1 interfaces, constitutes data flow direction opposite primary ring and standby ring；There is E1 link failures in looped network
Or in the state of node failure, the forward and backward node of failure E1 links is respectively by the 2nd E1 interfaces, the data ring of an E1 interfaces
Return, the data on primary ring are looped back to standby ring at the front nodal point of failure E1 links, the data back transmission on standby ring,
Transparent transmission on each node by the posterior nodal point of failure E1 links until received, it is ensured that when looped network occurs line fault, and looped network communicates not
It is interrupted.
(2) be not looped back to the data of primary ring on standby ring by the node of the looped network when there is node failure, but logical
All change switch by malfunctioning node bypass to cross multiselect so that the data of reception are transmitted directly to latter node, it is to avoid in looped network
During middle multiple nodes break downs, looped network is cut into by multiple independent small looped networks using data loopback technology.
(3) comprising the primary node and secondary node being in parallel on each node of the looped network；There is node event in primary node
During barrier, substitute primary node with secondary node and work, it is ensured that the normal work of local node.
(4) looped network either normal or ring self-healing, is only processed using primary between each primary node or secondary node
Data on ring, do not process and use the data on standby ring；So, looped network will not be influenceed by ring self-healing.
Brief description of the drawings
Fig. 1 is the circuit diagram of the first embodiment of the E1 dual-ring networks with ring self-healing function of the invention.
Data flow direction schematic diagrames of the Fig. 2 for the E1 dual-ring networks shown in Fig. 1 when there is E1 link failures.
Fig. 3 is the circuit diagram of the first embodiment of primary node in Fig. 1.
Fig. 4 is the Data flow direction schematic diagram of E1 drive modules 11 and FPGA module 12 in Fig. 3.
Fig. 5 is that the E1 dual-ring networks shown in Fig. 1 are shown when there is node failure using the Data flow direction of data Loopback Mode
It is intended to.
Fig. 6 is the circuit diagram of the second embodiment of primary node in Fig. 1.
Fig. 7 be Fig. 1 shown in E1 dual-ring networks occur node failure when using malfunctioning node bypass mode data flow stream
To schematic diagram.
Fig. 8 is the circuit diagram of the second embodiment of the E1 dual-ring networks with ring self-healing function of the invention.
Fig. 9 is the circuit diagram of primary node or secondary node in Fig. 8.
Figure 10 is the circuit diagram of standby usage node redundancy at a node in Fig. 8.
Wherein, the reference of Fig. 1 to Figure 10 is：Primary ring 10, standby ring 20；E1 drive modules 11, FPGA module 12,
CPU module 13, the switching switch switching of the 14, second multiselect one of the first multiselect one switch 15.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.
Embodiment 1：
As shown in figure 1, a kind of E1 dual-ring networks with ring self-healing function.Including some primary sections for circulating connection successively
Point.
Each primary node is configured with an E1 interfaces, the 2nd E1 interfaces.First E1 interfaces of each primary node connect
Receipts interface (rx0) connect previous primary node, and (previous primary node refers to transmit data to this primary node by primary ring
Primary node) the 2nd E1 interfaces transmission interface (tx1), each primary node circulates connect and compose primary ring 10 according to this.And
And, the receiving interface (rx1) of the 2nd E1 interfaces of each primary node connects the transmission of an E1 interfaces of previous primary node
Interface (tx0), each primary node circulates connect and compose standby ring 20 according to this.
This primary node (" this primary node " described in the present invention refers to any one primary node in looped network) passes through
The receiving interface (rx0) of the first E1 interfaces receives the data that previous primary node sends；This primary node connects to an E1 interfaces
The data of receipts are processed, and by the transmission interface (tx1) of the 2nd E1 interfaces to the number after latter primary node transmission processe
According to.
The receiving interface (rx1) of the 2nd E1 interfaces of this primary node receives the data of the transmission of latter primary node；
The 2nd E1 interfaces of this primary node to data be directly transparent to this primary node an E1 interfaces transmission interface
(tx0) on.This primary node is not processed the data that the receiving interface (rx1) of the 2nd E1 interfaces is received.
That is, each primary node on looped network constitutes bidirectional loop network by primary ring 10 and standby ring 20.And looped network
On each primary node between only using the data on primary ring 10, the data on standby ring 20 are not used.
In the state of the normal operation of each primary node, if the E1 states of this primary node have local terminal to alert or remote
End alarm, then it is assumed that the E1 links between front and rear primary node break down, now, two primary sections before and after failure E1 links
The data is activation of correspondence E1 interfaces internally can be looped back to data receiver by point respectively.E1 link failures include primary ring 10 and/
Or the E1 link failures of standby ring 20.
Specifically, the previous primary node of failure E1 links can internally by the transmission interface (tx1) of the 2nd E1 interfaces
Data receiver of the data is activation loopback into receiving interface (rx1).Latter primary node can internally by the transmission of an E1 interfaces
Data receiver of the data is activation loopback of interface (tx0) into receiving interface (rx0).
If as shown in Fig. 2 between primary node 3 and primary node 4 or two E1 links generation exceptions；This
When, the transmission data of the transmission interface (tx1) of its 2nd E1 interface are looped back to receiving interface (rx1) by primary node 3；Primary section
Point 4 sends and for the transmission data of the transmission interface (tx0) of its E1 interface to loop back to receiving interface (rx0).Now, on looped network
True Data stream as shown in figure center line 30.Standby ring 20 is reached after the data loopback that 2nd E1 interfaces of primary node 3 send,
Data transparent transmission on standby ring 20, until after an E1 interface loopbacks of primary node 4, returning to primary ring 10.
Specifically, as shown in figure 3, each primary node includes E1 drive modules 11, FPGA (Field-Programmable
Gate Array, field programmable gate array) module, CPU module 13.
E1 drive modules 11 are connected with FPGA module 12 using TDM (time division multiplexing) bus；FPGA module 12 with
CPU module 13 is connected using pci bus；CPU module 13 is connected with E1 drive modules 11 using management bus.
E1 drive modules 11 are used to drive an E1 interfaces, the 2nd E1 interfaces, complete the transmitting-receiving of data.CPU module 13 connects
The link status signal that E1 drive modules 11 send is received, judges whether E1 links are normal according to the link status signal, and at this
In the state of primary node occurs E1 link failures with adjacent primary node, FPGA module 12 is controlled.FPGA module 12 and E1
Drive module 11 is connected.
In the state of E1 link failures occurs in looped network, the previous primary node of failure E1 links will by FPGA module 12
Reception data of the transmission data loopback of the 2nd E1 interfaces into the 2nd E1 interfaces；The latter primary node of failure E1 links passes through
FPGA module 12 by the transmission data loopback of an E1 interfaces into an E1 interfaces reception data.
FPGA module 12 is used to assist CPU module 13 to complete meeting audio mixing, voice data exchange, signaling data, gateway number
According to the function such as transmitting-receiving.FPGA module 12 is by the data exchange in pci bus to TDM buses.FPGA module 12 can be by voice
Give the CODEC chips of connection breadboardin extension set.Voice can also be given CPU module 13 by FPGA, be changed into by CPU module 13
Network data gives IP phones.
Data loopback of the invention is realized indeed through FPGA module 12, rather than real by E1 drive modules 11
Existing data winding.CPU module 13 receives the link status signal that E1 drive modules 11 send by managing bus, according to the link
Status signal judges whether E1 links are normal, and controls FPGA module 12 to realize returning inside tdm data in E1 link failures
Ring.
If using E1 drive modules 11 by tdm data winding, then may result in link circuit condition change can not be detected
Measure.That is, during if there is link failure, using the loopback of E1 drive modules 11 after, link failure will be considered that and disappear,
Whether so actual link failure recovers to have no way of learning.
E1 drive modules 11 have two TDM buses with FPGA module 12, are respectively a TDM buses (TDM0), the 2nd TDM
Bus (TDM1).First TDM buses (TDM0) are used to realize that the E1 interfaces of FPGA module 12 and the carry out data transmit-receive.Second
TDM buses (TDM1) are used to realize that the E1 interfaces of FPGA module 12 and the 2nd carry out data transmit-receive.
Fig. 4 is the Data flow direction schematic diagram of E1 drive modules 11 and FPGA module 12 in Fig. 3.It is to be understood that being
Those skilled in the art is more intuitively understood that FPGA module 12 realizes the process of data loopback, hilted broadsword is introduced in Fig. 4 double
Throw switch A, single-pole double-throw switch (SPDT) B, by demonstrating the handoff procedure of single-pole double-throw switch (SPDT) A, single-pole double-throw switch (SPDT) B, come good
The Data flow direction of expression E1 drive modules 11 and FPGA module 12；In side circuit and in the absence of single-pole double-throw switch (SPDT) A, hilted broadsword
Commutator B.
In the state of link fault-free, FPGA module 12 is received by a TDM buses (TDM0) and connect from an E1
Receiving interface (rx0) received data (as the single-pole double-throw switch (SPDT) A in Fig. 4 is switched at b) of mouth, FPGA module 12 pairs should
Data are processed, and the data of corresponding treatment are sent to the transmission of the 2nd E1 interfaces by the 2nd TDM buses (TDM1)
On interface (tx1).FPGA module 12 receives the receiving interface (rx1) from the 2nd E1 interfaces by the 2nd TDM buses (TDM1)
Received data (as the single-pole double-throw switch (SPDT) B in Fig. 4 is switched at d), FPGA module 12 and by the data penetration transmission (such as Fig. 4
In circuit e shown in) in a TDM buses (TDM0), the hair of an E1 interfaces is sent to by a TDM buses (TDM0)
Send on interface (tx0).
In the state of link is faulty, the FPGA module 12 of previous primary node will be treated by the 2nd TDM buses
(TDM1) the data internal loopback (as the single-pole double-throw switch (SPDT) B in Fig. 4 is switched at c) of the 2nd E1 interfaces, FPGA moulds are sent to
Block 12 and by the data penetration transmission to a TDM buses (TDM0), an E1 interfaces are sent to by a TDM buses (TDM0)
On transmission interface (tx0).The FPGA module 12 of latter primary node will be treated to be sent to an E1 by a TDM buses (TDM0)
The data internal loopback (as the single-pole double-throw switch (SPDT) A in Fig. 4 is switched at a) of interface, the data of FPGA module 12 to loopback
Processed, and the corresponding data for sending are sent to the receiving interface of the 2nd E1 interfaces by the 2nd TDM buses (TDM1)
(tx1) on.After link failure recovery, looped network will detect failure vanishes, return to the state before ring self-healing.
Embodiment 2：
As shown in figure 5, there is node in the primary node that the data Loopback Mode described in embodiment 1 can be used for looped network
The situation of failure.If however, having multiple not adjacent primary nodes that node failure, the mode meeting of data winding occur in looped network
Looped network is cut into multiple independent small looped networks.
As shown in fig. 6, on the basis of embodiment 1, each primary node in the present embodiment also comprising the first multiselect all
Change switch 14, the switching of the second multiselect one switch 15.First multiselect one switching switch 14 motionless terminal (switch it is not optional cut one
End) it is connected with the receiving interface (rx0) of an E1 interfaces of latter primary node.Second multiselect one switches the motionless of switch 15
Terminal is connected with the receiving interface (rx1) of the 2nd E1 interfaces of previous primary node.
The master that the present invention will occur node failure using the switching switch switching of the 14, second multiselect one of the first multiselect one switch 15
Bypassed with node, this problem can be avoided.
Specifically, the switching of the first multiselect one switch switching of the 14, second multiselect one switch 15 is respectively single-pole double-throw switch (SPDT).
In the state of this primary node is without node failure, the transmission of the switched terminal and the 2nd E1 interfaces of the switching of the first multiselect one switch 14
Interface (tx1) is connected；The data that the transmission interface (tx1) of the 2nd E1 interfaces sends switch switch 14 and send out by the first multiselect one
It is sent on the receiving interface (rx0) of an E1 interfaces of latter primary node.The switched terminal of the switching of the second multiselect one switch 15
It is connected with the transmission interface (tx0) of an E1 interfaces；The data that the transmission interface (tx0) of the first E1 interfaces sends pass through second
The switching of multiselect one switch 15 is sent on the receiving interface (rx1) of the 2nd E1 interfaces of previous primary node.
In the state of this primary node is not keyed up or has node failure, the switched terminal of the switching of the first multiselect one switch 14
Switch to the receiving interface (rx0) of an E1 interfaces；The switching of first multiselect one switchs 14 by an E1 interfaces of this primary node
The data that receive of receiving interface (rx0) be transmitted directly to latter primary node an E1 interfaces receiving interface (rx0)
On, the switching of the first multiselect one switch 14 bypasses the primary node of the sheet at place.Also, the switching of the switching of the second multiselect one switch 15
Terminal switches to the receiving interface (rx1) of the 2nd E1 interfaces；The switching of second multiselect one switchs 15 by the 2nd E1 of this primary node
The data that the receiving interface (rx1) of interface is received are transmitted directly to the receiving interface of the 2nd E1 interfaces of previous primary node
(rx1) on, the switching of the second multiselect one switch 15 bypasses the primary node of the sheet at place.
When this primary node occurs power failure, the switching switch switching of the 14, second multiselect one of the first multiselect one switch 15 is cut
Changing causes E1 transparent transmissions.Due to transparent transmission, the equipment of the upper and lower primary node of this primary node without the alarm of E1 circuits, looped network according to
So normal, simply the primary node of failure has exited looped network.Shown in Fig. 7, for example, there is node failure in primary node 3, it is primary
It is primary from from the point of view of E1 signals after the switching of the switching switch switching of the 14, second multiselect one of first multiselect one switch 15 of node 3
Node 3 is exactly one section of cable, it is believed that primary node 2 is joined directly together with primary node 4, and primary node 3 is not as existed.This
When, real data flow is still primary ring 10 on looped network.If there is node failure simultaneously in multiple primary nodes, by after
Electrical equipment switching causes E1 transparent transmissions, does not have faulty website still in a looped network, and simply the primary node of these failures is all exited
Looped network.Now, real data flow is still primary ring 10 on looped network.After node failure recovers, looped network will be detected
Failure vanishes, return to the state before ring self-healing.
Embodiment 3：
In embodiment 2, when primary node occurs node failure, the primary node of failure is due to the switching switch of multiselect one
Bypass effect will move out looped network, to realize looped network self-healing.Now, the primary node of the failure will be unable to and other primary sections on ring
Point communication.Therefore, in the present embodiment, employing main-standby nodes redundancy, increase looped network reliability.
Specifically, as shown in figure 8, also including several secondary nodes on looped network.The structure of secondary node and primary node
It is identical.Each secondary node is in parallel one by one by serial ports with each primary node respectively, realizes master-slave redundancy.Secondary node is used for
During primary nodes break down connected in parallel, the work of the primary node is substituted.
As shown in figure 9, being with the difference of embodiment 2, first of each primary node (and secondary node) on looped network
To use instead respectively be SP3T switch to the switching switch switching of the 14, second multiselect one of multiselect one switch 15, compared with by SP3T switch
Have more a hanging switched terminal.
In looped network, when primary node is without node failure, only by the information on primary node processing looped network.Meanwhile, it is primary
The receiving interface (rx0) of the first E1 interfaces of node, the 2nd E1 interfaces receiving interface (rx1) respectively directly with secondary node
The receiving interface (rx0) of the first E1 interfaces, the receiving interface (rx1) of the 2nd E1 interfaces are connected one by one.Secondary node is in hot standby
State, by the cable communication between primary, spare node, makes the quantity of state real-time synchronization one of the quantity of state of oneself and primary node
Cause, so after the switching of primary, spare node, current all communications status still keep continuing, such as conversed by looped network
Two phones will not be conversed and break because of there is primary node to switch on looped network.Primary node is by looped network status information (such as voice
Time Slot Occupancy occupancy situation, website call conversation state etc.) secondary node is notified, so that secondary node switches to primary node
When, database is newest, and the influence to looped network is minimized.
As shown in Figure 10, it is the structural representation of primary node, secondary node at a node in looped network (first in Fig. 9
The switching switch switching of the 14, second multiselect one of multiselect one switch 15 illustrate only two switched terminals, and hanging switched terminal is not shown
Go out).Primary node, secondary node switch switch the 14, second multiselect one and switch the control of switch 15 the by the first multiselect one respectively
One E1 interfaces, the transmission interface (tx0, tx1) of the 2nd E1 interfaces disconnect or access looped network with looped network.
Specifically, when this primary node is without node failure, this primary node switches switch 14, second by the first multiselect one
The switching of multiselect one switch 15 respectively accesses the transmission interface (tx0) of the transmission interface (tx1) of the 2nd E1 interfaces, an E1 interfaces
Looped network；The switched terminal of the switching switch switching of the 14, second multiselect one of the first multiselect one switch 15 of secondary node is switched to respectively
In hanging switched terminal, by the transmission interface (tx1) of the 2nd E1 interfaces, the transmission interface (tx0) and looped network of an E1 interfaces
Disconnect.
That is, when this primary node is without node failure, the transmission interface (tx1) of the 2nd E1 interfaces of this primary node
The data of transmission are sent to an E1 interfaces of latter primary node and secondary node by the switching of the first multiselect one switch 14
On receiving interface (rx0).The data that the transmission interface (tx0) of the first E1 interfaces of this primary node sends pass through the second multiselect one
Switching switch 15 is sent on the receiving interface (rx1) of the 2nd E1 interfaces of previous primary node and secondary node.This standby section
The switching switch switching switch 15 of the 14, second multiselect one of first multiselect one of point is respectively by the 2nd E1 interfaces, the hair of an E1 interfaces
Send interface (tx0) hanging.
When this primary node occurs node failure, then secondary node switching substitutes primary node work.Secondary node leads to
The switching switch switching of the 14, second multiselect one switch 15 of the first multiselect one is crossed respectively by the transmission interface (tx1) of the 2nd E1 interfaces, the
The transmission interface (tx0) of one E1 interfaces accesses looped network.Meanwhile, secondary node controls more than the first of primary node by redundancy cable
Select a switching to switch the switching of the 14, second multiselect one switch 15 to be switched in hanging switched terminal so that the second of primary node
The transmission interface (tx1) of E1 interfaces, the transmission interface (tx0) of an E1 interfaces disconnect with looped network.
Specifically, the switching switch switching of the 14, second multiselect one of the first multiselect one switch 15 of this primary node is respectively by the
Two E1 interfaces, an E1 interfaces transmission interface it is hanging.What the transmission interface (tx1) of the 2nd E1 interfaces of this secondary node sent
Data are connect by the reception that the first multiselect one switches the E1 interfaces that switch 14 is sent to latter primary node and secondary node
On mouth (rx0).The data that the transmission interface (tx0) of the first E1 interfaces of this secondary node sends are switched by the second multiselect one to be opened
15 are closed to be sent on the receiving interface (rx1) of the 2nd E1 interfaces of previous primary node and secondary node.
Above procedure completes primary, spare node, and the primary node before failure is changed to secondary node due to node failure,
Secondary node adapter business before failure, is changed to primary node.
If secondary node failure, then need not switch primary, spare node, simply primary node is controlled by redundancy cable
The switching switch switching of the 14, second multiselect one of first multiselect one switch 15 of secondary node is switched in hanging switched terminal, is made
The transmission interface (tx0) of an E1 interfaces of secondary node, the transmission interface (tx1) of the 2nd E1 interfaces is obtained to be disconnected with looped network.
In mutually switching, the primary, spare node of its adjacent (including up, descending) can be received the primary, spare node in somewhere
To after E1 alarms, cause data loopback self-healing.Now, real data flow can flow through primary ring 10 and standby ring 20 on looped network,
Now looped network communication is still normal, and simply other nodes are found to be this node and have exited looped network.E1 alarms disappear after the completion of switching
Lose, looped network recovers normal.Now, real data flow is still primary ring 10 on looped network, and now this node enters again
Looped network.Because switching time is very short, so the primary node of failure is easy to looped network to recover communication quickly.
Looped network error in data can be sent in switching moment, voice interruption, the wrong bag of signaling is shown as.Yet with primary, spare
Status data is synchronous between node, and the call set up will not be interrupted after the completion of switching.The wrong bag of signaling can be due to time-out
Retransmission mechanism and recover.Primary, spare node has watchdog circuit, if deadlock can restart, backup site is changed into when restarting.
When all there is node failure in this primary node, secondary node, primary node, secondary node the first multiselect all
Change switch 14, the second multiselect one switching switch 15 respectively by place this at two nodes bypass respectively.
Specifically, the reception of this primary switching of the first multiselect of node one 14 E1 interface by this primary node of switch connects
The data that mouth (rx0) is received are transmitted directly to the receiving interface of an E1 interfaces of latter primary node and secondary node
(rx0) on.Also, the switching of the second multiselect one switch 15 receives the receiving interface (rx1) of the 2nd E1 interfaces of this primary node
To data be transmitted directly on the receiving interface (rx1) of the 2nd E1 interfaces of previous primary node and secondary node.
The switching of the first multiselect of this secondary node one switchs 14 by the receiving interface (rx0) of an E1 interfaces of this secondary node
The data for receiving are transmitted directly on the receiving interface (rx0) of an E1 interfaces of latter primary node and secondary node.And
And, the data that the switching of the second multiselect one switch 15 receives the receiving interface (rx1) of the 2nd E1 interfaces of this secondary node are straight
Connect and be transferred on the receiving interface (rx1) of the 2nd E1 interfaces of previous primary node and secondary node.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above example.It is appreciated that this
Other improvement and change that art personnel directly derive or associate without departing from the basic idea of the present invention
It is considered as being included within protection scope of the present invention.
Claims (8)
1. a kind of E1 dual-ring networks with ring self-healing function, it is characterised in that：
Including some primary nodes for circulating connection successively；
Each primary node is each configured with an E1 interfaces, the 2nd E1 interfaces；
The data that this primary node is sent by the previous primary node of an E1 interfaces；This primary node is to an E1 interfaces
The data of reception are processed, and by the 2nd E1 interfaces to the data after latter primary node transmission processe；
The data of the transmission that this primary node passes through the latter primary node of the 2nd E1 interfaces；2nd E1 of this primary node connects
The data that mouth is received directly are transparent on an E1 interfaces of this primary node, by an E1 interfaces to previous primary node
Send the data after transparent transmission；
In the state of there are E1 link failures in looped network, the number that the previous primary node of failure E1 links sends the 2nd E1 interfaces
According to loopback into the 2nd E1 interfaces data, the data ring that the latter primary node of failure E1 links sends an E1 interfaces
Return into the data of an E1 interfaces.
2. E1 dual-ring networks with ring self-healing function according to claim 1, it is characterised in that：
The primary node includes E1 drive modules (11), FPGA module (12), CPU module (13)；
E1 drive modules (11) are for driving an E1 interfaces, the 2nd E1 interfaces；
CPU module (13) receives the link status signal that E1 drive modules (11) sends, and E1 is judged according to the link status signal
Whether link is normal, and in the state of this primary node occurs E1 link failures with adjacent primary node, controls FPGA moulds
Block (12)；
FPGA module (12) is connected with E1 drive modules (11)；
In the state of E1 link failures occurs in looped network, the previous primary node of failure E1 links is by FPGA module (12) by the
Reception data of the transmission data loopback of two E1 interfaces into the 2nd E1 interfaces；The latter primary node of failure E1 links passes through FPGA
Module (12) by the transmission data loopback of an E1 interfaces into an E1 interfaces reception data.
3. E1 dual-ring networks with ring self-healing function according to claim 2, it is characterised in that：
In the state of E1 link failures does not occur in looped network, the FPGA module (12) of this primary node is connect by a TDM buses
The receiving interface received data from an E1 interfaces is received, FPGA module (12) is processed the data, and will treatment
Data are sent on the transmission interface of the 2nd E1 interfaces by the 2nd TDM buses afterwards；FPGA module (12) is by the 2nd TDM buses
Receive the receiving interface received data from the 2nd E1 interfaces, FPGA module (12) and by the data penetration transmission a to TDM
In bus, it is sent on the transmission interface of an E1 interfaces by a TDM buses；
In the state of E1 link failures occurs in looped network, the FPGA module (12) of the previous primary node of failure E1 links will be waited to lead to
Cross the data internal loopback that the 2nd TDM buses are sent to the 2nd E1 interfaces, FPGA module (12) and by the data penetration transmission to first
TDM buses, are sent on the transmission interface of an E1 interfaces by a TDM buses；The latter primary node of failure E1 links
FPGA module (12) will treat to be sent to the data internal loopback of an E1 interfaces by a TDM buses, FPGA module (12)
The data to loopback are processed, and the corresponding data for sending are sent into the 2nd E1 interfaces by the 2nd TDM buses
On receiving interface.
4. E1 dual-ring networks with ring self-healing function according to claim 1 and 2, it is characterised in that：
Primary node includes switching switch of the first multiselect one (14), switching switch of the second multiselect one (15)；
This primary node in the state of without node failure, the data that the transmission interface of the 2nd E1 interfaces of this primary node sends
Switch switch (14) by the first multiselect one to be sent on the receiving interface of an E1 interfaces of latter primary node；This primary section
The data that the transmission interface of the first E1 interfaces of point sends switch switch (15) and are sent to previous primary section by the second multiselect one
On the receiving interface of the 2nd E1 interfaces of point；
In the state of being not keyed up or having power failure, the switching of the first multiselect one switchs (14) by this primary node to this primary node
The reception of the data that receive of the receiving interface E1 interfaces that are transmitted directly to latter primary node of an E1 interfaces connect
On mouth；Also, the number that switching switch of the second multiselect one (15) receives the receiving interface of the 2nd E1 interfaces of this primary node
According to being transmitted directly on the receiving interface of the 2nd E1 interfaces of previous primary node.
5. E1 dual-ring networks with ring self-healing function according to claim 1, it is characterised in that：
Also include some secondary nodes；
Secondary node is identical with the structure of primary node；
Each secondary node is in parallel one by one with each primary node respectively；
Secondary node is used to, in primary nodes break down connected in parallel, substitute the work of the primary node.
6. E1 dual-ring networks with ring self-healing function according to claim 5, it is characterised in that：
Primary node, secondary node are respectively comprising switching switch of the first multiselect one (14), switching switch of the second multiselect one (15)；
In the state of this primary node is without node failure,
The data that the transmission interface of the 2nd E1 interfaces of this primary node sends switch switch (14) and send by the first multiselect one
Onto the receiving interface of latter primary node and an E1 interfaces of secondary node；The transmission of the first E1 interfaces of this primary node
The data that interface sends switch the 2nd E1 that switch (15) is sent to previous primary node and secondary node by the second multiselect one
On the receiving interface of interface；
Switching switch of first multiselect one (14) of this secondary node, switching switch of the second multiselect one (15) respectively meet the 2nd E1
Mouthful, the transmission interface of an E1 interfaces it is hanging.
7. E1 dual-ring networks with ring self-healing function according to claim 6, it is characterised in that：
In the state of this primary node has node failure,
Switching switch of first multiselect one (14) of this primary node, switching switch of the second multiselect one (15) respectively meet the 2nd E1
Mouthful, the transmission interface of an E1 interfaces it is hanging；
The data that the transmission interface of the 2nd E1 interfaces of this secondary node sends switch switch (14) and send by the first multiselect one
Onto the receiving interface of latter primary node and an E1 interfaces of secondary node；The transmission of the first E1 interfaces of this secondary node
The data that interface sends switch the 2nd E1 that switch (15) is sent to previous primary node and secondary node by the second multiselect one
On the receiving interface of interface.
8. E1 dual-ring networks with ring self-healing function according to claim 7, it is characterised in that：
In the state of there is power failure simultaneously in this primary node, this secondary node,
Switching switch of first multiselect one (14) of this primary node receives the receiving interface of an E1 interfaces of this primary node
To data be transmitted directly on the receiving interface of an E1 interfaces of latter primary node and secondary node；Also, more than second
Switching switch (15) is selected to be transmitted directly to the data that the receiving interface of the 2nd E1 interfaces of this primary node is received previous
On the receiving interface of the 2nd E1 interfaces of primary node and secondary node；
Switching switch of first multiselect one (14) of this secondary node receives the receiving interface of an E1 interfaces of this secondary node
To data be transmitted directly on the receiving interface of an E1 interfaces of latter primary node and secondary node；Also, more than second
Switching switch (15) is selected to be transmitted directly to the data that the receiving interface of the 2nd E1 interfaces of this secondary node is received previous
On the receiving interface of the 2nd E1 interfaces of primary node and secondary node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710138024.7A CN106888142B (en) | 2017-03-09 | 2017-03-09 | E1 double-ring network with ring self-healing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710138024.7A CN106888142B (en) | 2017-03-09 | 2017-03-09 | E1 double-ring network with ring self-healing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106888142A true CN106888142A (en) | 2017-06-23 |
| CN106888142B CN106888142B (en) | 2020-01-24 |
Family
ID=59179574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710138024.7A Active CN106888142B (en) | 2017-03-09 | 2017-03-09 | E1 double-ring network with ring self-healing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106888142B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743243A (en) * | 2019-01-28 | 2019-05-10 | 广州广哈通信股份有限公司 | A kind of looped network data transmission method and device based on asymmetrical network |
| CN110415632A (en) * | 2019-07-23 | 2019-11-05 | 安徽天域视听器材有限公司 | Video transmission system and its transmission method based on voice control |
| CN110440391A (en) * | 2019-08-07 | 2019-11-12 | 珠海格力电器股份有限公司 | Loop network protection method and air conditioning system |
| CN111934721A (en) * | 2020-09-01 | 2020-11-13 | 昆明昆宝电线电缆制造有限公司 | Intelligent 5G is from special signal cable that reveals in charge tunnel |
| EP4106276A4 (en) * | 2020-03-11 | 2023-08-02 | Huawei Technologies Co., Ltd. | Fault processing method, device, and readable storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0638282A (en) * | 1992-07-14 | 1994-02-10 | Hitachi Ltd | Control method for switch |
| CN1557657A (en) * | 2004-01-15 | 2004-12-29 | 武汉理工大学 | Fibre optical CAN bus self-healing ring network interface device |
| CN101771591A (en) * | 2008-12-26 | 2010-07-07 | 大唐移动通信设备有限公司 | Service transmission method and system under RRU and BBU loop network |
| CN101807076A (en) * | 2010-05-26 | 2010-08-18 | 哈尔滨工业大学 | Duplication redundancy fault-tolerant high-reliability control system having cooperative warm standby function based on PROFIBUS field bus |
| CN201663607U (en) * | 2010-01-29 | 2010-12-01 | 上海埃德电子股份有限公司 | Rapid self-healing device and equipment for Ethernet ring network |
| CN103036756A (en) * | 2011-10-08 | 2013-04-10 | 中兴通讯股份有限公司 | Hybrid looped network protection method and system based on sharing channel |
| CN103209099A (en) * | 2013-05-03 | 2013-07-17 | 广州市成格信息技术有限公司 | Automatic switching protection method for network communication circuit between nodes |
| CN105591699A (en) * | 2016-02-24 | 2016-05-18 | 山东超越数控电子有限公司 | Double-ring optical network communication method and networking used for industrial control field |
-
2017
- 2017-03-09 CN CN201710138024.7A patent/CN106888142B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0638282A (en) * | 1992-07-14 | 1994-02-10 | Hitachi Ltd | Control method for switch |
| CN1557657A (en) * | 2004-01-15 | 2004-12-29 | 武汉理工大学 | Fibre optical CAN bus self-healing ring network interface device |
| CN101771591A (en) * | 2008-12-26 | 2010-07-07 | 大唐移动通信设备有限公司 | Service transmission method and system under RRU and BBU loop network |
| CN201663607U (en) * | 2010-01-29 | 2010-12-01 | 上海埃德电子股份有限公司 | Rapid self-healing device and equipment for Ethernet ring network |
| CN101807076A (en) * | 2010-05-26 | 2010-08-18 | 哈尔滨工业大学 | Duplication redundancy fault-tolerant high-reliability control system having cooperative warm standby function based on PROFIBUS field bus |
| CN103036756A (en) * | 2011-10-08 | 2013-04-10 | 中兴通讯股份有限公司 | Hybrid looped network protection method and system based on sharing channel |
| CN103209099A (en) * | 2013-05-03 | 2013-07-17 | 广州市成格信息技术有限公司 | Automatic switching protection method for network communication circuit between nodes |
| CN105591699A (en) * | 2016-02-24 | 2016-05-18 | 山东超越数控电子有限公司 | Double-ring optical network communication method and networking used for industrial control field |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743243A (en) * | 2019-01-28 | 2019-05-10 | 广州广哈通信股份有限公司 | A kind of looped network data transmission method and device based on asymmetrical network |
| CN109743243B (en) * | 2019-01-28 | 2021-08-27 | 广州广哈通信股份有限公司 | Ring network data transmission method and device based on non-peer-to-peer network |
| CN110415632A (en) * | 2019-07-23 | 2019-11-05 | 安徽天域视听器材有限公司 | Video transmission system and its transmission method based on voice control |
| CN110440391A (en) * | 2019-08-07 | 2019-11-12 | 珠海格力电器股份有限公司 | Loop network protection method and air conditioning system |
| EP4106276A4 (en) * | 2020-03-11 | 2023-08-02 | Huawei Technologies Co., Ltd. | Fault processing method, device, and readable storage medium |
| US11792099B2 (en) | 2020-03-11 | 2023-10-17 | Huawei Technologies Co., Ltd. | Troubleshooting method, device, and readable storage medium |
| CN111934721A (en) * | 2020-09-01 | 2020-11-13 | 昆明昆宝电线电缆制造有限公司 | Intelligent 5G is from special signal cable that reveals in charge tunnel |
| CN111934721B (en) * | 2020-09-01 | 2021-12-24 | 昆明昆宝电线电缆制造有限公司 | Intelligent 5G is from special signal cable that reveals in charge tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106888142B (en) | 2020-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106888142A (en) | A kind of E1 dual-ring networks with ring self-healing function | |
| CA2323429C (en) | Local network, particularly an ethernet network, with redundancy properties, as well as a redundancy manager | |
| CN101394260B (en) | Method and apparatus for realizing main standby inverting and load sharing | |
| CN102014019B (en) | Aggregated link switching method and device | |
| CN101662421B (en) | Method and device for transmitting control message based on ethernet multi-ring network | |
| CN100454880C (en) | Method and system of realizing rig network protection | |
| EP1982447A2 (en) | System and method for detecting and recovering from virtual switch link failures | |
| CN101977139A (en) | Route retransmission realization device and method, and switching equipment | |
| JP2010510741A (en) | Communication system having master / slave structure | |
| JPH0351142B2 (en) | ||
| WO2011137797A1 (en) | Method and system for data transmission in ethernet | |
| CN107749798B (en) | Communication network system, shunt device and method for accessing bidirectional transmission network | |
| CN107453956B (en) | Communication network system, shunt device and method for quickly accessing network | |
| KR100690042B1 (en) | The embodiment of ip interface pyh level duplication in ip based using dual active device | |
| EP3232617B1 (en) | Protection switching method and system, and nodes | |
| CN1855838B (en) | Interface inverting method | |
| CN114095462B (en) | Fault-tolerant method and system for SRIO communication system of radar processor | |
| CN104135411A (en) | Device and method of implementing multi-node communication based on RS232 interface | |
| CN107579770B (en) | Communication network system, shunt device and method for accessing unidirectional transmission network | |
| TWI717778B (en) | Network switch and operating method thereof | |
| CN109039728A (en) | Flow congestion detection method and system based on BFD | |
| CN115412424B (en) | Double-master device detection method and device in MLAG environment | |
| CN100579249C (en) | System for interconnection between frames in communication system and its business transmission method | |
| JPH0787065A (en) | Data changeover device | |
| CN117439628A (en) | Communication terminal equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |