CN101902383A - E1-based bi-directional ring network method and system thereof - Google Patents
E1-based bi-directional ring network method and system thereof Download PDFInfo
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- CN101902383A CN101902383A CN2010102616077A CN201010261607A CN101902383A CN 101902383 A CN101902383 A CN 101902383A CN 2010102616077 A CN2010102616077 A CN 2010102616077A CN 201010261607 A CN201010261607 A CN 201010261607A CN 101902383 A CN101902383 A CN 101902383A
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Abstract
The invention relates to a bi-directional E1 network bridge, an E1-based ring network method of Ethernet and a system thereof, belonging to the telecommunication technology. The bi-directional E1 network bridge comprises an Ethernet switching module, an Ethernet transmission module and two E1 network bridge modules, wherein the E1 network bridge modules and the Ethernet transmission module complete information interaction, data conversion and data transmission through the Ethernet switching module. The system comprises a master node and at least one salve node and is characterized in that the master node comprises switching equipment, at least two single E1 network bridges and two corresponding Ethernet ports, and the salve nodes comprise two pairs of E1 ports and at least one Ethernet port; and two pairs of the E1 ports and the Ethernet ports have an exchange function, and the master node is connected with the E1 ports among the salve nodes to form a bi-directional ring network. The invention has high reliability and expanded application.
Description
The explanation of dividing an application
The application is that application number is 200610020385.3, name is called the dividing an application of patent application of " a kind of two-way E1 bridge and based on the bidirectional loop network method and system of E1 ".
Technical field
The present invention relates to electrical communication technology, relate in particular to the E1 looped network method and system of a kind of two-way E1 bridge and Ethernet thereof.
Background technology
Point-to-point mode is adopted in existing E1 transmission mostly, for example, mobile operator adopts the business and the monitor data of the E1 transmission resources for transmitting oneself of telecommunications, the mode that is adopted is the star-like connected mode at the center office of arriving station, and this application mode can not satisfy growing data, services or application demand.
E1 Ethernet framing bridge technology can realize the simple bridging functionality of E1 network (WAN) and Ethernet Ethernet (LAN); as shown in Figure 1; can set up the E1 loop network by single E1 bridge; each node has Ethernet Ethernet interface; but can't form bi-directional ring; do not possess the bi-directional ring defencive function; in case cable or certain node failure on the loop; to cause whole loop communication failure; can't recover voluntarily; necessary manual reversion communication, Ethernet E1 looped network reliability of the prior art is low, and application is restricted.
Summary of the invention
The object of the present invention is to provide a kind of E1 looped network method and system of Ethernet, low to remedy in the prior art E1 looped network reliability, use limited problem.
Bidirectional looped network system based on E1 of the present invention comprises that a host node and at least one from node, is characterized in that:
Described host node comprises switching equipment, at least two pairs of e1 ports and ethernet port, has bridging functionality between e1 port wherein and the ethernet port, and is connected to described switching equipment by ethernet port;
Describedly comprise two pairs of e1 ports and at least one ethernet port having function of exchange between described two pairs of e1 ports and the ethernet port from node;
Described host node and connect to form bidirectional loop network from the e1 port between the node.
Described system comprises at least two from node, two pairs of e1 ports of described host node link to each other with two a pair of e1 ports from node respectively, described two all the other e1 ports from node link to each other in turn with adjacent e1 port from node respectively, and host node and a plurality of e1 port between node connect to form bidirectional loop network successively.
Described is two-way E1 bridge from node.
This bidirectional loop network method based on E1 is characterized in that: it adopts following steps:
A, switching equipment detect the looped network loop, make an ethernet port on the switching equipment of host node be in data forward state, and another ethernet port is in the data discarding state, forms two-way E1 looped network;
B, produce fault on described looped network, switching equipment makes two ethernet ports that link to each other with loop on the switching equipment all be in data forward state;
After fault was got rid of, switching equipment detected this reparation automatically, and switching equipment switches to normal condition with two ethernet ports that link to each other with loop on the switching equipment.
Described switching equipment adopts spanning tree algorithm STP detection, control ring net state.
Beneficial effect of the present invention is: in the present invention; host node and (a plurality of) connect to form bidirectional loop network from the e1 port between the node; detect the looped network loop by the switching equipment in the host node; make two single E1 bridges in the host node be in normal condition; be that one of them ethernet port is in data forward state; another is in the data discarding state; form two-way E1 looped network; each node of E1 looped network all has function of exchange; a plurality of network interfaces (ethernet port) externally are provided; has function of exchange between the two-way E1 circuit of a plurality of network interfaces and two-way E1 looped network; so just can insert network port device or local area network (LAN) on this two-way E1 looped network at the node place; all groups of nodes are built up a wide area network; this two-way E1 looped network is by the detection of switching equipment; control; has the bidirectional protective function; any Single Point of Faliure can not influence the proper communication of whole loop; for example; host node converges to two-way E1 respectively on the switching equipment with spanning tree algorithm STP function with two single E1 bridges; the STP function that starts switching equipment just can realize the bidirectional protective of whole looped network; with respect to star-like connected mode of the prior art; the center of star-like connected mode (being equivalent to the host node among the present invention) need with office's as many E1 line of quantity of standing; and in the present invention; host node only needs two pairs of E1 lines just can satisfy the requirement of two-way annular networking; but also has the bidirectional protective function; therefore; the two-way E1 looped network reliability height that the present invention constituted, its application has obtained expansion.
Description of drawings
Fig. 1 is the E1 loop network structural representation that the single E1 bridge of available technology adopting constitutes;
Fig. 2 is the embodiment of the invention 1 a two-way E1 ring network structure schematic diagram;
Fig. 3 is the structural representation of two-way E1 bridge among the present invention;
Fig. 4 is the embodiment of the invention 1 a control flow schematic diagram;
Fig. 5 is the malfunction schematic diagram in the embodiment of the invention 1;
Fig. 6 is the embodiment of the invention 2 two-way E1 ring network structure schematic diagrames;
Fig. 7 is the embodiment of the invention 3 two-way E1 ring network structure schematic diagrames.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
Embodiment 1:
According to Fig. 2 and Fig. 3, present embodiment comprises 3 from node b, c, d, i.e. 3 two-way E1 bridges 1, with host node a, this host node a comprises two single E1 bridges 2 and switching equipment 3, each single E1 bridge 2 has an a pair of e1 port and an ethernet port (being FE), and e1 port wherein has function of exchange respectively with between the corresponding ethernet port, and is connected to switching equipment 3 by ethernet port.
As shown in Figure 2, each two-way E1 bridge 1 has 2 ethernet ports (being FE) and two pairs of e1 ports, link to each other in turn by e1 port between 3 two-way E1 bridges 1, two two-way E1 bridges 1 of end (are a left side among Fig. 2, the two-way E1 bridge 1 of right both sides) links to each other with two single E1 bridges 2 by e1 port respectively, two single E1 bridges 2 are connected with switching equipment 3 by ethernet port FE, the ethernet port FE of two single E1 bridges 2 respectively with the port e0/1 of switching equipment 3, e0/2 is connected, like this, 3 two-way E1 bridges 1, two single E1 bridges 2 and switching equipment 3 constitute the E1 looped networks, it is host node a (comprising two single E1 bridges 2 and switching equipment 3), from node b, c, e1 port between the d connects to form bidirectional loop network successively, switching equipment 3 has spanning tree algorithm STP service function, adopt spanning tree algorithm STP to detect, the control ring net state, switching equipment 3 is an Ethernet switch.In the present invention, can locating ethernet port by correspondence at node (two-way E1 bridge 1), that network port device or local area network (LAN) are inserted this ring E1 is online.
As shown in Figure 3, comprise ethernet switching module 11, two E1 bridge modules 12 and Ethernet transport modules 13 in the two-way E1 bridge 1, between the described E1 bridge module 12, can finish information interaction, data transaction and transmission between the Ethernet transport module 13, finish information interaction, data transaction and transmission by ethernet switching module 11 between E1 bridge module 12 and the Ethernet transport module 13.When two-way E1 bridge did not temporarily connect ethernet device, data can directly be transferred to another E1 bridge module 12 from an E1 bridge module 12; When two-way E1 bridge access network based on ethernet equipment, finish information interaction, data transaction and transmission by ethernet switching module 11 between E1 bridge module 12 and the Ethernet transport module 13.
Particularly, as shown in Figure 3, E1 bridge module 12 comprises bridge-jointing unit 121, framer 125, linear interface unit 122, E1 transformer 123, lightning protection circuit 124, e1 port also links to each other successively, bridge-jointing unit 121 connects random access memory ram (can be synchronous DRAM SDRAM), bridge-jointing unit 121 directly links to each other with ethernet switching module 11, just can realize the configuration of framing/non-framing mode by framer 125 wherein, under the framing mode, can realize the time slot that takies in the E1 transmission data procedures and the distribution of bandwidth, have 32 time slots, each time slot bandwidth is 64Kbps, and E1 supports PCM31 and PCM30 system, is taken by system for PCM31 system time gap 0, can not be used for transmitting user data, for the PCM30 system, time slot 0 and time slot 16 are all taken by system, can not be used for transmitting user data.Lightning protection circuit 124 wherein can prevent surge and thunderbolt, and protection equipment is avoided the thunderbolt injury.
Particularly, as shown in Figure 3, Ethernet transport module 13 comprises transmission unit 131, Ethernet transformer 132, lightning protection circuit 133, ethernet port FE (being the RJ45 port) and links to each other successively that transmission unit 131 directly links to each other with ethernet switching module 11.
As Fig. 2 and shown in Figure 4, the control flow of present embodiment is as follows:
3 two-way E1 bridges 1 link to each other successively, two two-way E1 bridges 1 of end are connected with two single E1 bridges 2 respectively, and two single E1 bridges 2 are connected with port e0/1, the e0/2 of switching equipment 3 by ethernet port FE respectively, like this, as shown in Figure 2, constitute the E1 looped network.
Switching equipment 3 starts spanning tree algorithm STP service, detect the looped network loop, make in two ports (e0/1, e0/2) that switching equipment links to each other with Ethernet, the high ethernet port e0/1 (FE) of corresponding priority is in data forwarding forwarding state, another corresponding ethernet port e0/2 (FE) is in data and abandons the discarding state, form two-way E1 looped network, like this, ring topology physically just is generated tree algorithm STP and is processed in logic bus topolopy.
Circuit produces the fault point on looped network, and for example, as shown in Figure 5, any point produces fault or disconnection on the network, and switching equipment 3 detects described fault automatically.
As shown in Figure 5, switching equipment 3 restarts spanning tree algorithm STP service, making wherein, two ethernet port FE all switch to data forwarding forwarding state, just the logic fracture at switching equipment 3 places is switched on, the fracture of looped network is just only located in the fault point, whole like this network is a bus topolopy all just physically and in logic, recovers the proper communication of the whole network automatically, and this recovery process only can make network service produce about 30 seconds interruption.
After described fault point is repaired, switching equipment 3 detects this reparation automatically, restart spanning tree algorithm STP service, switching equipment 3 switches back normal condition with the ethernet port (e0/1, e0/2) that links to each other with loop on the switching equipment, be that the high ethernet port e0/1 (FE) of corresponding priority is in data forwarding forwarding state, another corresponding ethernet port e0/2 (FE) is in data and abandons the discarding state.
Embodiment 2:
As shown in Figure 6, the difference of present embodiment and embodiment 1 is: be two single E1 bridges 2 and an ethernet concentrator formation from node b ', c ', d ', each single E1 bridge comprises an a pair of e1 port and an ethernet port (FE), two paths of data connects by single E1 bridge, convert Ethernet data to, realized the transmitted in both directions of data between the two-way E1 through the exchange of switching equipment.From topological structure, two single E1 bridges 2 and an ethernet concentrator merging form a node device in the present embodiment.
Embodiment 3:
In the above-described embodiments, reflected a host node and a plurality ofly connected to form bidirectional loop network and control flow thereof from node, in this enforcement, only has a host node and one from node, wherein, as shown in Figure 7, host node comprises two single E1 bridges 2 and switching equipment 3, each single E1 bridge 2 has an a pair of e1 port and an ethernet port (being FE), e1 port wherein has function of exchange respectively with between the corresponding ethernet port, and be connected to switching equipment 3 by ethernet port, and be two-way E1 bridge 1 from node, two-way E1 bridge 1 has 2 ethernet ports (being FE) and two pairs of e1 ports, host node and form bidirectional loop network from the e1 port between node butt joint, with reference to embodiment 1, the control flow of present embodiment and embodiment 1 are described same or similar, repeat no more herein.
Claims (10)
1. bidirectional looped network system based on E1 comprises that a host node and at least one from node, is characterized in that:
Described host node comprises switching equipment, at least two pairs of e1 ports and ethernet port, has bridging functionality between e1 port wherein and the ethernet port, and is connected to described switching equipment by ethernet port;
Describedly comprise two pairs of e1 ports and at least one ethernet port having function of exchange between described two pairs of e1 ports and the ethernet port from node;
Described host node and connect to form bidirectional loop network from the e1 port between the node.
2. the bidirectional looped network system based on E1 according to claim 1, it is characterized in that: described system comprises at least two from node, two pairs of e1 ports of described host node link to each other with two a pair of e1 ports from node respectively, described two all the other e1 ports from node link to each other in turn with adjacent e1 port from node respectively, and host node and a plurality of e1 port between node connect to form bidirectional loop network successively.
3. the bidirectional looped network system based on E1 according to claim 1 and 2, it is characterized in that: described is two-way E1 bridge from node, this two-way E1 bridge comprises ethernet switching module, Ethernet transport module and two E1 bridge modules, between the described E1 bridge module, can finish information interaction, data transaction and transmission between the Ethernet transport module, finish information interaction, data transaction and transmission by ethernet switching module between E1 bridge module and the Ethernet transport module.
4. E1 bidirectional looped network system according to claim 3, it is characterized in that: described E1 bridge module comprises bridge-jointing unit, linear interface unit, E1 transformer, e1 port and links to each other successively, bridge-jointing unit connects random access memory ram, and bridge-jointing unit directly links to each other with ethernet switching module.
5. E1 bidirectional looped network system according to claim 4 is characterized in that: described E1 bridge module also comprises framer, and described framer is arranged between bridge-jointing unit and the linear interface unit.
6. according to claim 4 or 5 described E1 bidirectional looped network systems, it is characterized in that: described E1 bridge module also comprises lightning protection circuit, and this lightning protection circuit one end directly links to each other with e1 port, and the other end links to each other with transformer.
7. E1 bidirectional looped network system according to claim 3 is characterized in that: described Ethernet transport module comprises transmission unit, Ethernet transformer, ethernet port and links to each other successively that transmission unit directly links to each other with ethernet switching module.
8. E1 bidirectional looped network system according to claim 7 is characterized in that: described Ethernet transport module also comprises lightning protection circuit, and this lightning protection circuit directly links to each other with ethernet port.
9. bidirectional loop network method based on E1, it is characterized in that: it adopts following steps:
A, switching equipment detect the looped network loop, make an ethernet port on the switching equipment of host node be in data forward state, and another ethernet port is in the data discarding state, forms two-way E1 looped network;
B, produce fault on described looped network, switching equipment makes two ethernet ports that link to each other with loop on the switching equipment all be in data forward state;
C, after fault is got rid of, switching equipment detects this reparation automatically, switching equipment switches to normal condition with two ethernet ports that link to each other with loop on the switching equipment.
10. the bidirectional loop network method based on E1 according to claim 9 is characterized in that: described switching equipment adopts spanning tree algorithm STP detection, control ring net state.
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| CN2010102616077A CN101902383B (en) | 2006-02-23 | 2006-02-23 | E1-based bi-directional ring network method and system thereof |
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| CN2010102616077A CN101902383B (en) | 2006-02-23 | 2006-02-23 | E1-based bi-directional ring network method and system thereof |
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| CN 200610020385 Division CN1812364A (en) | 2006-02-23 | 2006-02-23 | Bidirectional El bridge and bidirectional loop network method and system based on El thereof |
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| CN101902383B CN101902383B (en) | 2012-05-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301027A (en) * | 2013-07-16 | 2015-01-21 | 中兴通讯股份有限公司 | Method, system and node for realizing auto protection switching in Optical Burst-Switching Ring |
| CN103634186B (en) * | 2013-01-30 | 2017-02-08 | 深圳市禾望电气股份有限公司 | Ring-network serial communication method and system |
| CN110896366A (en) * | 2019-05-14 | 2020-03-20 | 研祥智能科技股份有限公司 | Network card function testing method and device of multi-network card equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1151640C (en) * | 1999-12-29 | 2004-05-26 | 艾默生网络能源有限公司 | Data enchange device and method |
| JP4287734B2 (en) * | 2003-11-21 | 2009-07-01 | 三菱電機株式会社 | Network equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634186B (en) * | 2013-01-30 | 2017-02-08 | 深圳市禾望电气股份有限公司 | Ring-network serial communication method and system |
| CN104301027A (en) * | 2013-07-16 | 2015-01-21 | 中兴通讯股份有限公司 | Method, system and node for realizing auto protection switching in Optical Burst-Switching Ring |
| CN110896366A (en) * | 2019-05-14 | 2020-03-20 | 研祥智能科技股份有限公司 | Network card function testing method and device of multi-network card equipment and storage medium |
| CN110896366B (en) * | 2019-05-14 | 2021-08-13 | 研祥智能科技股份有限公司 | Network card function testing method and device of multi-network card equipment and storage medium |
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