CN1306734C - Service link protecting method for intelligent optical network - Google Patents
Service link protecting method for intelligent optical network Download PDFInfo
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- CN1306734C CN1306734C CNB031192017A CN03119201A CN1306734C CN 1306734 C CN1306734 C CN 1306734C CN B031192017 A CNB031192017 A CN B031192017A CN 03119201 A CN03119201 A CN 03119201A CN 1306734 C CN1306734 C CN 1306734C
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Abstract
The present invention discloses a service link protecting method for an intelligent optical network. The method comprises: the intelligent optical network establishes a service transmission link according to the current setting service transmission signaling, and currently transmitted service is transmitted along the currently established service transmission link; when the initial service transmission link goes wrong or fails, the other new service transmission link is established, and the current service is changed and continues transmitting along the new service transmission link. The method solves the problem that when the service transmission link goes wrong or fails, other links can not carry out the transmission, and therefore, the method provides the guarantee for the safe operation of the whole intelligent optical network.
Description
Technical field
The present invention relates to the ASON field, particularly a kind of service link guard method of ASON.
Background technology
Along with networks development, the application of optical-fiber network is increasingly extensive, optical-fiber network is that the form with light passed whole network with signal, directly in the light territory, carry out transmission, regeneration, exchange and the routing of signal, signal without any opto-electronic conversion, realizes transmitting at any time, anywhere the target of arbitrary format in transmission course.When transport service, if the link occurs fault of transport service or inefficacy then utilize other link that business is transmitted, this process is switched by Linear multiplex section protection or is switched realization by Multiplex Section Shared Protection Ring.
If under Linear multiplex section, carry out the business transmission; just between two network elements, carry out the business transmission; shown in Fig. 1 a and Fig. 1 b; Fig. 1 a, Fig. 1 b be respectively realize linear multiplex section protection and switch before schematic diagram and realize linear multiplex section protection and switch before schematic diagram; suppose that business is to transmit between network element A and network element B, implementation step is:
1) before switching services, when just business is transmitted by normal link, the professional light mouth Port5 that sends network element B by the light mouth Port1 of network element A to;
2) switching services takes place after, just the link between the light mouth Port5 of the light mouth Port1 of network element A and network element B breaks down or when losing efficacy, business is switched on the link between the light mouth Port6 of the light mouth Port2 of network element A and network element B to be transmitted.
If under multiplexing end protection rings, carry out the business transmission; just business is transmitted between a plurality of network elements; as shown in Figure 2; Fig. 2 switches the schematic diagram of front and back for Multiplex Section Shared Protection Ring; each icon is represented a network element node among the figure; on behalf of network element, heavy line be connected with link between the network element; the transmission path of business before on behalf of Multiplex Section Shared Protection Ring, fine line switch; on behalf of Multiplex Section Shared Protection Ring, dotted line switch the professional transmission path in back; suppose that certain professional ring 1 and ring 2 through Multiplex Section Shared Protection Ring transmits; wherein encircle 1 by network element 101; network element 102; network element 107 and network element 108 constitute; ring 2 is by network element 102; network element 103; network element 106 and network element 104 constitute; when this business is sent to network element 105 by network element 100; need through network element 100; network element 101; network element 102; network element 106; the link that network element 104 and network element 105 are built; after network element 106 lost efficacy; must carry out switching of Multiplex Section Shared Protection Ring, business is switched to network element 100; network element 101; network element 102; network element 103; the link that network element 104 and network element 105 are built up transmits.
Go up the growth of data service along with internet host-host protocol (IP); set up ASON; ASON is exactly the processing of carrying out the IP data service on traditional optical-fiber network; but; owing to support that the agreement of ASON is the multi-wavelength exchange agreement (GMPLS) of optical-fiber network; this GMPLS agreement is not supported linear multiplexing protection section to protect and is switched the processing procedure of switching with Multiplex Section Shared Protection Ring; therefore; when the link occurs fault of transport service or when losing efficacy; just can't transmit, cause the paralysis of whole ASON by other link.
Summary of the invention
In view of this; the invention provides a kind of service link guard method of ASON; this method has solved the link occurs fault of transport service in the ASON or when losing efficacy; can't carry out the professional problem that transmits by other links, for the safe operation of whole ASON provides guarantee.
According to above-mentioned purpose, a kind of service link guard method of ASON,
Comprise: ASON is set up service transmission link according to current professional command transmitting in the key-course setting, and the current business that will transmit is transmitted along the current service transmission link of setting up; This method also comprises:
The initial link circuit that carries out professional transmission breaks down or when losing efficacy, shields former traffic signaling, sets up at physical transport layer another new service transmission link of another new routing iinformation is set, and switch current business and continue transmission along new service transmission link
When carrying out linear multiplex section protection when switching; the described process of setting up another service transmission link at physical transport layer is: according to the port-mark in set another new routing information of physical transport layer, and the service transmission link after setting up linear multiplex section protection and switching.
When carrying out Multiplex Section Shared Protection Ring when switching; the described process of setting up another service transmission link at physical transport layer is: according to the label switched path LSP in set another new routing information of physical transport layer, and the service transmission link after setting up Multiplex Section Shared Protection Ring and switching.
This method further comprises: break down or after the professional transmission route that lost efficacy recovers, open former professional command transmitting, rebulid former service transmission link according to the sign of the service port in the former professional command transmitting, current business is transmitted along former link.
This method further comprises: break down or after the professional transmission route that lost efficacy recovers, open former professional command transmitting, rebulid former service transmission link according to the LSP in the former professional command transmitting, current business is transmitted along former link.
Method utilization provided by the invention changes the signaling traffic port-mark in the GMPLS agreement or shields the link of the professional transmission of method change of signaling in the GMPLS agreement, fundamentally solved in the ASON when the link occurs fault of transport service or when losing efficacy, can't carry out the professional problem that transmits by other links, avoided the paralysis of whole ASON, for the safe operation of whole ASON provides guarantee.
Description of drawings
Fig. 1 a is for realizing the schematic diagram before linear multiplex section protection is switched.
Fig. 1 b is for realizing the schematic diagram after linear multiplex section protection is switched.
Fig. 2 switches the schematic diagram of front and back for Multiplex Section Shared Protection Ring.
Fig. 3 utilizes Linear multiplex section protection to switch for the present invention or Multiplex Section Shared Protection Ring is switched a kind of method flow diagram of realizing service link protection in the ASON.
Fig. 4 utilizes Linear multiplex section protection to switch for the present invention or Multiplex Section Shared Protection Ring is switched the another kind of method flow diagram of realizing service link protection in the ASON.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
The professional main service link that relies on of ASON transmits, and therefore, must set up service link before the business transmission.Because the service link of ASON is to determine according to given command transmitting and route, need the professional command transmitting of definition earlier so in ASON, set up service link.In the existing professional command transmitting, operated by rotary motion has service port sign or label switched path information such as (LSP), wireless communication system passes through the route of service port sign set in the command transmitting or the transmission of LSP indication current business, and sets up service transmission path according to this route.
In the ASON, when the link occurs fault of transport service or when losing efficacy, if business still according to existing command transmitting along former link transmission, this business can't be transmitted by other links, thereby cause the paralysis of professional transmission.Because the group network topological structure of ASON is identical with the group network topological structure of optical-fiber network; therefore; can in ASON, make up linear multiplex section protection or Multiplex Section Shared Protection Ring and realize the protection of service link; that is: guarantee in the link occurs fault of current transport service or when losing efficacy, but current business normal transmission still.The main network form of ASON is mesh network (MESH), the general protection that makes up linear multiplex section protection or Multiplex Section Shared Protection Ring realization service link in the MESH network.
As shown in Figure 3; Fig. 3 utilizes Linear multiplex section protection to switch for the present invention or Multiplex Section Shared Protection Ring is switched a kind of method flow diagram of realizing service link protection in the ASON; the link of supposing the initial transmission business is former link, and its implementation procedure is:
Step 300,301 when former link occurs fault or inefficacy, adopts linear multiplex section protection mode or Multiplex Section Shared Protection Ring mode to protect and switches;
Step 302,303, when adopting Linear multiplex section to protect to switch, reset the sign that is designated the target service port that will be switched to of service port in the professional command transmitting, set up new link according to newly-installed service port sign, and switch current business and transmit along newly-established link; When adopting Multiplex Section Shared Protection Ring to protect to switch, reset the target LSP of LSP in the professional command transmitting for switching to, set up new link according to newly-installed LSP then, and switch current business and transmit along newly-established link.
Because in ASON; be divided into the signaling transport layer of chain of command and the transport layer of physics; so after normal link opens circuit, the signaling transport layer of chain of command and the transport layer of physics can be separated; make the signaling control of the setting in the signaling transport layer of uncontrolled of routing iinformation of physics transport layer; as shown in Figure 4, Fig. 4 utilizes Linear multiplex section protection to switch for the present invention or Multiplex Section Shared Protection Ring is switched the another kind of method flow diagram of realizing service link protection in the ASON.The link of supposing the initial transmission business is former service transmission link, and its implementation procedure is:
Step 400 is provided with the routing iinformation of linear multiplex section protection mode or Multiplex Section Shared Protection Ring mode at the physics transport layer;
Step 401 when former link occurs fault or inefficacy, adopts linear multiplex section protection mode or Multiplex Section Shared Protection Ring mode to protect and switches;
Step 402,403 shields former professional command transmitting, makes professional along the letter link transmission according to the routing iinformation of the physics transport layer that sets in advance.
After former service transmission link recovered, the current business transmission path can be switched back former service transmission path again, made business still along former service link transmission.At Fig. 3, two kinds of schemes shown in Figure 4, the recovery process of this transmission link also has two kinds of implementation methods:
First kind of implementation method is: for the described method of Fig. 3, under the linear multiplex section protection mode, the service port that is provided with in the professional command transmitting is designated former service port sign, rebulids former link according to this port-mark, and current business is transmitted along former link; Under the Multiplex Section Shared Protection Ring mode, it is former LSP that professional command transmitting is reset LSP, rebulids former link according to this LSP, and current business is transmitted along former link.
Second kind of implementation method is: for the described method of Fig. 4, the transport layer of control plane is combined with physical control layer, make the routing iinformation of command transmitting control physical control layer face, open former professional command transmitting, under the linear multiplex section protection mode, rebulid former service transmission link according to the sign of the service port in the former professional command transmitting, current business is transmitted along former link; Under the Multiplex Section Shared Protection Ring mode, rebulid former service transmission link according to the LSP in the former professional command transmitting, current business is transmitted along former link.
This method is described by the following examples, is example with Fig. 1 a and the described structure of Fig. 1 b, when the link occurs fault of transport service in the ASON or when losing efficacy, makes up the linear multiplex section protection service link in ASON.
Example one:
When business initial transmits, port-mark in the professional command transmitting is set to the light mouth Port1 of network element A and the light mouth Port5 of network element B, this business command transmitting supporting business transmits along the link between the light mouth Port5 of the light mouth Port1 of network element A and network element B, when the link between the light mouth Port5 of the light mouth Port1 of network element A and network element B breaks down or lost efficacy, the port-mark of changing in this business command transmitting is the light mouth Port2 of network element A and the light mouth Port6 of network element B, and the professional command transmitting supporting business of change behind the port-mark transmitted along the link between the light mouth Port6 of the light mouth Port2 of network element A and network element B.
Example two:
Light mouth Port1 that a port-mark in the professional command transmitting is set is network element A and the light mouth Port5 of network element B, this business command transmitting is former professional command transmitting; The port-mark that sets in advance routing iinformation in the physics transport layer is the light mouth Port2 of network element A and the light mouth Port6 of network element B.
When business initial transmits, according to former professional command transmitting business by network element A light mouth Port1 and the link between the light mouth Port5 of network element B transmit; When the link between the light mouth Port5 of the light mouth Port1 of network element A and network element B breaks down or lost efficacy, shield former professional command transmitting, carry out the routing iinformation of physical transport layer, professional by network element A light mouth Port2 and the link between the light mouth Port6 of network element B transmit.
With the described structure of Fig. 2 is example, when the link occurs fault of transport service in the ASON or when losing efficacy, makes up Multiplex Section Shared Protection Ring protection service link in ASON.
Example three:
When business initial transmits; the LSP of professional command transmitting is set to network element 100; network element 101; network element 102; network element 106; the link that network element 104 and network element 105 are built; this business command transmitting supporting business is along network element 100; network element 101; network element 102; network element 106; the link that network element 104 and network element 105 are built transmits; after network element 106 lost efficacy; must carry out switching of Multiplex Section Shared Protection Ring; the LSP that changes in the professional command transmitting is a network element 100; network element 101; network element 102; network element 103; the link that network element 104 and network element 105 are built up; according to this LSP, current business is switched to network element 100; network element 101; network element 102; network element 103; the link that network element 104 and network element 105 are built up transmits.
Example four:
It is the link that network element 100, network element 101, network element 102, network element 106, network element 104 and network element 105 are built that a LSP in the professional command transmitting is set, and this business command transmitting is former professional command transmitting; The LSP that routing iinformation in the physics transport layer is set earlier is the link that network element 100, network element 101, network element 102, network element 103, network element 104 and network element 105 are built up.
When business initial transmits, according to former professional command transmitting the professional link of being built along network element 100, network element 101, network element 102, network element 106, network element 104 and network element 105 is transmitted, after network element 106 lost efficacy, shield former professional command transmitting, carry out the routing iinformation of physical transport layer, the professional link that is built up along network element 100, network element 101, network element 102, network element 103, network element 104 and network element 105 is transmitted.
According to said method, the invention solves in intelligent network, solved when the link occurs fault of transport service or when losing efficacy, just the problem that can't transmit by other link, for the safe operation of intelligent network provides guarantee, obtained good effect.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1, a kind of service link guard method of ASON, comprise: ASON is set up service transmission link according to current professional command transmitting in the key-course setting, and the current business that will transmit is transmitted along the current service transmission link of setting up; It is characterized in that this method also comprises:
The initial link circuit that carries out professional transmission breaks down or when losing efficacy, shields former traffic signaling, at physical transport layer another new routing iinformation is set, and sets up another new service transmission link, and switches current business and continue transmission along new service transmission link.
2, the method for claim 1; it is characterized in that; when carrying out linear multiplex section protection when switching; the described process of setting up another service transmission link at physical transport layer is: according to the port-mark in set another new routing information of physical transport layer, and the service transmission link after setting up linear multiplex section protection and switching.
3, the method for claim 1; it is characterized in that; when carrying out Multiplex Section Shared Protection Ring when switching; the described process of setting up another service transmission link at physical transport layer is: according to the label switched path LSP in set another new routing information of physical transport layer, and the service transmission link after setting up Multiplex Section Shared Protection Ring and switching.
4, method as claimed in claim 2, it is characterized in that, this method further comprises: break down or after the professional transmission route that lost efficacy recovers, open former professional command transmitting, rebulid former service transmission link according to the sign of the service port in the former professional command transmitting, current business is transmitted along former link.
5, method as claimed in claim 3, it is characterized in that, this method further comprises: break down or after the professional transmission route that lost efficacy recovers, open former professional command transmitting, rebulid former service transmission link according to the LSP in the former professional command transmitting, current business is transmitted along former link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031192017A CN1306734C (en) | 2003-03-04 | 2003-03-04 | Service link protecting method for intelligent optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031192017A CN1306734C (en) | 2003-03-04 | 2003-03-04 | Service link protecting method for intelligent optical network |
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| Publication Number | Publication Date |
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| CN1527507A CN1527507A (en) | 2004-09-08 |
| CN1306734C true CN1306734C (en) | 2007-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031192017A Expired - Lifetime CN1306734C (en) | 2003-03-04 | 2003-03-04 | Service link protecting method for intelligent optical network |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372305C (en) * | 2005-07-28 | 2008-02-27 | 华为技术有限公司 | Service protective method |
| CN1878036B (en) * | 2006-07-18 | 2010-06-09 | 华为技术有限公司 | Method for convergence of control-plane route in intelligent optical network |
| CN101656651A (en) * | 2008-08-19 | 2010-02-24 | 华为技术有限公司 | Method and device for correlatively protecting traffic engineering tunnels |
| CN102811388B (en) * | 2011-06-02 | 2018-08-10 | 南京中兴新软件有限责任公司 | The business answering method and device of automatically switching optical networks |
| CN103973466B (en) | 2013-01-25 | 2019-02-12 | 华为技术有限公司 | A kind of method and device waking up suspend mode link |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394053A (en) * | 2001-06-27 | 2003-01-29 | 华为技术有限公司 | Fast protecting switching method for multi-protocol label exchange |
| CN1499747A (en) * | 2002-11-07 | 2004-05-26 | 华为技术有限公司 | Method for implementing protection and restoration for intelligent optical network |
-
2003
- 2003-03-04 CN CNB031192017A patent/CN1306734C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394053A (en) * | 2001-06-27 | 2003-01-29 | 华为技术有限公司 | Fast protecting switching method for multi-protocol label exchange |
| CN1499747A (en) * | 2002-11-07 | 2004-05-26 | 华为技术有限公司 | Method for implementing protection and restoration for intelligent optical network |
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| CN1527507A (en) | 2004-09-08 |
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