CN100563166C - The method that link bandwidth is dynamically adjusted - Google Patents
The method that link bandwidth is dynamically adjusted Download PDFInfo
- Publication number
- CN100563166C CN100563166C CNB2005100699407A CN200510069940A CN100563166C CN 100563166 C CN100563166 C CN 100563166C CN B2005100699407 A CNB2005100699407 A CN B2005100699407A CN 200510069940 A CN200510069940 A CN 200510069940A CN 100563166 C CN100563166 C CN 100563166C
- Authority
- CN
- China
- Prior art keywords
- link
- bandwidth
- threshold values
- actual available
- original
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to a kind of method and state machine that link bandwidth is dynamically adjusted, its core is: according to the available bandwidth of link the threshold values of link bandwidth is set, the threshold values of described link bandwidth is less than or equal to the link total bandwidth; Based on the threshold values of described link bandwidth and the actual available bandwidth of link link bandwidth is dynamically adjusted then.By the present invention, make when link capacity is reduced to a certain degree, no longer continue to use original path transport service and Network Control Protocol message, thereby avoid a large amount of packet losses of service message and Network Control Protocol message, and then guarantee the stability of People Near Me state and network topology.In addition, the present invention passed through according to the duration of described actual available bandwidth less than the link bandwidth threshold values, and the method that determines whether to close or open link more than or equal to duration of link bandwidth threshold values according to described actual available bandwidth, thereby prevent the influence of link flapping, further guarantee the stability of network topology.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and state machine that link bandwidth is adjusted.
Background technology
Along with SDH (synchronous digital transmission)/SONET (Synchronous Optical Network) transmits multiple services development, the continuous increase of access bandwidth demand, original container (being the VC4 particle to the maximum) can not be satisfied the demand, and thus, concatenation technology occurred.
Concatenation technology comprises Adjacent Concatenation and Virtual Concatenation, and Virtual Concatenation is used more flexible than Adjacent Concatenation, and bandwidth availability ratio is more effective.Yet the VCG of Virtual Concatenation (virtual cascade group) is in transmission course, and still there are the following problems:
1, the inefficacy of any one physical channel in the cascade will cause whole cascade channel to lose efficacy.In other words, business will all be interrupted;
2, Ye Wu bandwidth adjustment has a significant impact business: in case after the customer service foundation, if the bandwidth of business is adjusted, user's business can be interrupted a period of time usually again;
3, professionally provide the time long: open-minded from the user applies Business-to-Business, the cycle is oversize.
In order to address the above problem, adopting at present in the Virtual Concatenation transmission of SDH/SONET uses LCAS (the link capacity adjustment configuration) technical scheme of technology to realize the allocated bandwidth of SDH/SONET and Packet Service, its core is: utilize the reservation overhead byte of SDH (to utilize the H4 byte during high-order Virtual Concatenation, utilize the K4 byte during low order Virtual Concatenation) come transmitting control information, the capacity of virtual container appears reducing automatically when member (as certain VC12) was lost efficacy in LCAS on detecting network, detect this inefficacy member and be repaired the capacity that the back increases virtual container automatically, but also thereby the number of dynamically adjusting virtual container is adjusted the professional total virtual container capacity of mapping, thereby adapt to different service bandwidth demands.If the physical channel of exist losing efficacy in the Virtual Concatenation, LCAS will shield these physical channels, and other physical channel still can transport service in the Virtual Concatenation passage, thereby avoid the single one physical channel failure and the service disconnection that causes.
Technical scheme by using the LCAS technology in the existing Virtual Concatenation transmission at SDH/SONET is as can be seen: though thereby existing Virtual Concatenation+LCAS technology has guaranteed can dynamically adjust link capacity under link portions member failure condition and has guaranteed availability of traffics, and still there is deficiency in it:
When link capacity (bandwidth) when reducing to a certain degree, the LCAS function can not initiatively be broken link, cause limited link bandwidth can not carry a large amount of messages, and then cause a large amount of packet losses of service message and Network Control Protocol message, because a large amount of packet losses of control protocol message will cause the contact between the People Near Me to cut in and out, so will cause the vibration of network topology, have a strong impact on professional stability in real network is used.
Summary of the invention
The purpose of this invention is to provide a kind of method and state machine that link bandwidth is dynamically adjusted, by the present invention, solved because when link capacity (bandwidth) when reducing to a certain degree, LCAS can not initiatively break link, causes service message on the limited link bandwidth and a large amount of packet loss problems of Network Control Protocol message; And then solved because a large amount of packet losses of control protocol message cause the contact between the People Near Me to cut in and out, cause the network topology vibration, have a strong impact on the problem of professional stability in real network is used.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method that link bandwidth is dynamically adjusted provided by the invention comprises:
A, according to the total bandwidth of link the threshold values of link bandwidth is set, the threshold values of described link bandwidth is less than or equal to the link total bandwidth;
B, link bandwidth is dynamically adjusted according to the threshold values of described link bandwidth;
Described step B specifically comprises:
B1, system compare the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described actual available bandwidth less than the link bandwidth threshold values, execution in step B2 then; Otherwise, do not deal with;
B2, original business is switched to another link transmit, and cut off original link;
Wherein, described step B2 also comprises:
B21, system compare the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described actual available bandwidth more than or equal to the link bandwidth threshold values, execution in step B22 then; Otherwise, execution in step B23;
B22, recover original link, business is returned original link from another link switchover;
B23, maintenance business transmit on another link.
Wherein, described steps A is by obtaining the total bandwidth of link according to the message capacity of the communication equipment of link source end and terminal.
Wherein, also comprise between described steps A and step B: system adjusts the actual available bandwidth that configuration feature obtains link according to link capacity.
Wherein, described step B specifically comprises:
B4, system compare the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described reality can all bandwidth less than the link bandwidth threshold values, execution in step B5 then; Otherwise, do not deal with;
Whether B5, the described actual available bandwidth of monitoring reach setting-up time t less than duration of link bandwidth threshold values, if reach, and execution in step B6 then; Otherwise, execution in step B7;
B6, original business is switched to another link transmit, and cut off original link;
B7, keep original Link State constant, and continue execution in step B5.
Wherein, described step B6 also comprises:
Whether B61, monitoring actual available bandwidth reach setting-up time T more than or equal to duration of link bandwidth threshold values, if reach, and execution in step B62 then; Otherwise, execution in step B63;
B62, recover original link, business is returned original link from another link switchover;
B63, maintenance business transmit on another link.
Wherein, original business is switched to another link transmit, and the process of cutting off original link simultaneously, also comprises: the reporting links fault warning described.
Wherein, at the original link of described recovery, the process that business is returned original link from another link switchover also comprises: eliminate the link failure alarm simultaneously.
Wherein, described step B adopts state machine to realize that described state machine comprises:
Normal operating conditions, link failure state and Wait-to-Restore state;
When the actual available bandwidth of link reached setting-up time t less than the bandwidth threshold values of setting and duration, the described normal operating conditions of described chain route was transformed into described link failure state;
When the actual available bandwidth that returns to link when link bandwidth did not reach setting-up time T more than or equal to the bandwidth threshold values of setting and duration, described link entered the Wait-to-Restore state;
When the actual available bandwidth that returns to link when link bandwidth reached setting-up time T more than or equal to the bandwidth threshold values of setting and duration, the described Wait-to-Restore state exchange of described chain route was to described normal operating conditions.
As seen from the above technical solution provided by the invention, the present invention is provided with the threshold values of link bandwidth by the available bandwidth according to link, and the threshold values of described link bandwidth is less than or equal to the link total bandwidth; The method of link bandwidth dynamically being adjusted based on the actual available bandwidth of the threshold values of described link bandwidth and link then, make when link capacity is reduced to a certain degree, no longer continue to use original path transport service and Network Control Protocol message, thereby avoid a large amount of packet losses of service message and Network Control Protocol message, and then guarantee the stability of People Near Me state and network topology.
In addition, the present invention passed through according to the duration of described actual available bandwidth less than the link bandwidth threshold values, and the method that determines whether to close or open link more than or equal to duration of link bandwidth threshold values according to described actual available bandwidth, thereby prevent the influence of link flapping, further guarantee the stability of network topology.
Description of drawings
Fig. 1 is a transmission link schematic diagram of the present invention;
Fig. 2 is the flow chart of first embodiment of the invention;
Fig. 3 is the flow chart of second embodiment of the invention.
Embodiment
The invention provides a kind of method and state machine that link bandwidth is dynamically adjusted, its core is: according to the available bandwidth of link the threshold values of link bandwidth is set, based on the threshold values of described link bandwidth and the actual available bandwidth of link link bandwidth is dynamically adjusted then.
By the present invention, make when link capacity is reduced to a certain degree, no longer continue to use original path transport service and Network Control Protocol message, thereby avoid a large amount of packet losses of service message, and then guarantee the stability of People Near Me state and network topology.Suppose as shown in Figure 1, professional port1 mouth from Router (router) A is introduced, the Port1 outlet that path 1 or path 2 by network can arrive Router C, wherein path 1 is through the transmission network transparent transmission, so the cost in path 1 (path cost) value obviously is better than path 2, so the professional flow direction is path 1.The total bandwidth of supposing path 1 and path 2 is 100M, and transmission network is enabled the LCAS function and guaranteed can dynamically adjust bandwidth capacity under the transmission link partial fault situation.When causing path 1 bandwidth to be reduced to a certain degree when the transmission link partial fault, adopt the LCAS function of band threshold values function will guarantee that transmission link is when bandwidth reduces prescribed threshold, initiatively link is cut off, make Business Stream can select to proceed to transmit, thereby guarantee whole stability of network by path 2.
At method of the present invention, first embodiment provided by the invention as shown in Figure 2, comprising:
Step S101 is provided with the threshold values of link bandwidth according to the total bandwidth of link.
The specific implementation process comprises:
Step 1, obtain the total bandwidth of link according to the maximum communication capacity of the communication equipment of link source end and Su Duan;
Step 2, the threshold values that link bandwidth is set are less than or equal to the total bandwidth of described link.
Suppose still shown in Figure 1,1 (link 1) enabled the LCAS of band threshold values function in the path, the total bandwidth that veneer capacity by transmission equipment A and transmission equipment C obtains link 1 is X, and the threshold values that link bandwidth then is set is Y and Y≤X, and the threshold values function is defaulted as enabled state when LCAS enables.
Behind step S101, the present invention just can dynamically adjust link bandwidth based on the threshold values of described link bandwidth.The specific implementation process is as follows:
Step S102, system obtain the actual available bandwidth of link according to the LCAS function.
The actual available bandwidth of supposing the link 1 that obtains is Z.
Step S103, system compares the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described reality can all bandwidth less than described link bandwidth threshold values, i.e. Z＜Y, then execution in step S104; Otherwise execution in step S105 promptly keeps Link State constant, does not deal with.
Step S104, the reporting links fault warning, and original business is switched to another link transmit, cut off original link, then execution in step S106.
Step S106, system compare the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described actual available bandwidth more than or equal to the link bandwidth threshold values, execution in step S107 then; Otherwise, execution in step S108.
Step S107 eliminates the link failure alarm, and recovers original link, and business is returned original link from another link switchover.
Step S108 keeps professional and transmits on another link.
Still in conjunction with Fig. 1 step S103 is elaborated to the process of step S108.
When link portions breaks down, the LCAS function will be got rid of the part time slot of fault automatically, reduce the available bandwidth of link, when system detects available bandwidth Z and is lower than the threshold values Y of setting, promptly to the control unit reporting links fault warning of transmission equipment A and transmission equipment C, and control transmission device A and transmission equipment C force to turn-off the Port1 port, makes original business by other transmission link, as link 2, transmit.
Be lower than at available bandwidth Z under the threshold values Y situation of setting, system still utilizes the LCAS function to continue the available bandwidth situation of detected transmission link 1, after the technical staff fixes a breakdown, system will detect link bandwidth and partly return to available bandwidth Z 〉=Y, at this moment, then eliminate the link failure alarm on transmission equipment A and the transmission equipment C, and control transmission device A and transmission equipment C open port Port1, make original business still continue to transmit by transmission link 1.
At method of the present invention, second embodiment provided by the invention as shown in Figure 3, comprising:
Step S201 is provided with the threshold values of link bandwidth according to the total bandwidth of link.
The specific implementation process comprises:
Step 1, obtain the total bandwidth of link according to the maximum communication capacity of the communication equipment of link source end and Su Duan;
Step 2, the threshold values that link bandwidth is set are less than or equal to the total bandwidth of described link.
Behind step S201, system just can dynamically adjust link bandwidth based on the threshold values of described link bandwidth.The specific implementation process is as follows:
Step S202, system obtain the actual available bandwidth of link according to the LCAS function.
Step S203, system compares the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described actual available bandwidth less than the link bandwidth threshold values, execution in step S204 then; Otherwise execution in step S205 promptly keeps Link State constant, does not do any processing.
Step S204 monitors described actual available bandwidth and whether reaches setting-up time t less than duration of link bandwidth threshold values, if reach, and execution in step S206 then; Otherwise, keep Link State constant, and continue execution in step S204.
Step S206, reporting links fault warning, and original business is switched to another link transmit, and cut off original link, execution in step S207 then.
Step S207, whether the monitoring actual available bandwidth reaches setting-up time T more than or equal to duration of link bandwidth threshold values, if reach, execution in step S208 then; Otherwise, execution in step S209;
Step S208 recovers original link, and business is returned original link from another link switchover;
Step S209 keeps professional and transmits on another link.
Still in conjunction with Fig. 1 step S203 is elaborated to the process of step S209.
When link portions breaks down, the LCAS function will be got rid of the part time slot of fault automatically, reduces the available bandwidth of link, when system detects the threshold values Y that available bandwidth Z is lower than setting, if the link failure time less than T, then keeps original Link State constant; If the link failure duration reaches T second, promptly, enter the network service state to the control unit reporting links fault warning of transmission equipment A and transmission equipment C; And control transmission device A and transmission equipment C pressure shutoff Port1 port, original business is transmitted by other transmission link.
Be lower than at available bandwidth Z under the threshold values Y situation of setting, system still utilizes the LCAS function to continue the available bandwidth situation of detected transmission link 1, after the technical staff fixes a breakdown, system will detect link bandwidth and partly return to available bandwidth Z 〉=Y, enter the Wait-to-Restore state this moment, if the duration can not reach T second, then also continue to keep professional and transmit at other links; If the duration reaches T second, think that just link 1 can be working properly, then eliminate the link failure alarm on transmission equipment A and the transmission equipment C, and control transmission device A and transmission equipment C open port Port1, make original business still continue to transmit by transmission link 1.
The influence of bad (shake) during link switchover from causing thereby the switching of second embodiment provided by the invention by the time parameter set and then control transmission link can prevent link fashion.
The 3rd embodiment provided by the invention is a kind of state machine of using said method, and described state machine comprises normal operating conditions, link failure state and three states of Wait-to-Restore state;
When the actual available bandwidth of link reached setting-up time t less than the bandwidth threshold values of setting and duration, the described normal operating conditions of described chain route was transformed into described link failure state;
When the actual available bandwidth that returns to link when link bandwidth did not reach setting-up time T more than or equal to the bandwidth threshold values of setting and duration, described link entered the Wait-to-Restore state;
When the actual available bandwidth that returns to link when link bandwidth reached setting-up time T more than or equal to the bandwidth threshold values of setting and duration, the described Wait-to-Restore state exchange of described chain route was to described normal operating conditions.
As seen from the above technical solution provided by the invention, the present invention is provided with the threshold values of link bandwidth by the available bandwidth according to link, and the threshold values of described link bandwidth is less than or equal to the link total bandwidth; The method of link bandwidth dynamically being adjusted based on the actual available bandwidth of the threshold values of described link bandwidth and link then, make when link capacity is reduced to a certain degree, no longer continue to use original path transport service and Network Control Protocol message, thereby avoid a large amount of packet losses of service message and Network Control Protocol message, and then guarantee the stability of People Near Me state and network topology.
In addition, the present invention passed through according to the duration of described actual available bandwidth less than the link bandwidth threshold values, and the method for determining to close or open link according to described actual available bandwidth more than or equal to the duration of link bandwidth threshold values, thereby prevent the influence of link flapping, further guarantee the stability of network topology.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
1, a kind of method that link bandwidth is dynamically adjusted is characterized in that, comprising:
A, according to the total bandwidth of link the threshold values of link bandwidth is set, the threshold values of described link bandwidth is less than or equal to the link total bandwidth;
B, link bandwidth is dynamically adjusted according to the threshold values of described link bandwidth;
Described step B specifically comprises:
B1, system compare the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described actual available bandwidth less than the link bandwidth threshold values, execution in step B2 then; Otherwise, do not deal with;
B2, original business is switched to another link transmit, and cut off original link;
Described step B2 also comprises:
B21, system compare the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described actual available bandwidth more than or equal to the link bandwidth threshold values, execution in step B22 then; Otherwise, execution in step B23;
B22, recover original link, business is returned original link from another link switchover;
B23, maintenance business transmit on another link.
2, method according to claim 1 is characterized in that, described steps A is by obtaining the total bandwidth of link according to the message capacity of the communication equipment of link source end and terminal.
3, method according to claim 1 is characterized in that, also comprises between described steps A and step B: system adjusts the actual available bandwidth that configuration feature obtains link according to link capacity.
4, method according to claim 1 is characterized in that, described step B specifically comprises:
B4, system compare the actual available bandwidth of described link and the link bandwidth threshold values of described setting, if described actual available bandwidth less than the link bandwidth threshold values, execution in step B5 then; Otherwise, do not deal with;
Whether B5, the described actual available bandwidth of monitoring reach setting-up time t less than duration of link bandwidth threshold values, if reach, and execution in step B6 then; Otherwise, execution in step B7;
B6, original business is switched to another link transmit, and cut off original link;
B7, keep original Link State constant, and continue execution in step B5.
5, method according to claim 4 is characterized in that, described step B6 also comprises:
Whether B61, monitoring actual available bandwidth reach setting-up time T more than or equal to duration of link bandwidth threshold values, if reach, and execution in step B62 then; Otherwise, execution in step B63;
B62, recover original link, business is returned original link from another link switchover;
B63, maintenance business transmit on another link.
6, according to claim 1 or 4 described methods, it is characterized in that, original business is switched to another link transmit, and the process of cutting off original link is simultaneously, also comprises described:
The reporting links fault warning.
7, method according to claim 1 or 5 is characterized in that, at the original link of described recovery, the process that business is returned original link from another link switchover also comprises simultaneously:
The alarm of elimination link failure.
8, method according to claim 1 is characterized in that, described step B adopts state machine to realize that described state machine comprises:
Normal operating conditions, link failure state and Wait-to-Restore state;
When the actual available bandwidth of link reached setting-up time t less than the bandwidth threshold values of setting and duration, the described normal operating conditions of described chain route was transformed into described link failure state;
When the actual available bandwidth that returns to link when link bandwidth did not reach setting-up time T more than or equal to the bandwidth threshold values of setting and duration, described link entered the Wait-to-Restore state;
When the actual available bandwidth that returns to link when link bandwidth reached setting-up time T more than or equal to the bandwidth threshold values of setting and duration, the described Wait-to-Restore state exchange of described chain route was to described normal operating conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100699407A CN100563166C (en) | 2005-05-11 | 2005-05-11 | The method that link bandwidth is dynamically adjusted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100699407A CN100563166C (en) | 2005-05-11 | 2005-05-11 | The method that link bandwidth is dynamically adjusted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1863066A CN1863066A (en) | 2006-11-15 |
| CN100563166C true CN100563166C (en) | 2009-11-25 |
Family
ID=37390399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100699407A Expired - Fee Related CN100563166C (en) | 2005-05-11 | 2005-05-11 | The method that link bandwidth is dynamically adjusted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100563166C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621448B (en) * | 2008-06-30 | 2012-09-05 | 华为技术有限公司 | Method, device and system for guaranteeing network bandwidth |
| CN101984586A (en) * | 2010-11-03 | 2011-03-09 | 中兴通讯股份有限公司 | Method and device for monitoring multiple links |
| CN102164059B (en) * | 2011-05-30 | 2014-01-22 | 北京星网锐捷网络技术有限公司 | Method and device for detecting connection error of stacked aggregated links |
| CN102685007B (en) * | 2012-05-04 | 2016-11-23 | 华为技术有限公司 | The processing method and processing device of Member Link in a kind of multilink bundle link group |
| CN104580002B (en) * | 2015-01-14 | 2017-07-28 | 盛科网络（苏州）有限公司 | The big balanced retransmission method of current load and device |
| CN104796289A (en) * | 2015-04-22 | 2015-07-22 | 国家电网公司 | Electric power SDH data service protection configuration method and data service transmission method |
| CN106487716A (en) * | 2015-08-28 | 2017-03-08 | 中兴通讯股份有限公司 | Bandwidth adjusting method and device |
| CN110267310B (en) * | 2018-03-12 | 2022-04-22 | 中兴通讯股份有限公司 | Link capacity adjusting method, device, system, controller and network node |
| CN110460457B (en) * | 2018-05-08 | 2021-03-02 | 大唐移动通信设备有限公司 | Data transmission method and device |
-
2005
- 2005-05-11 CN CNB2005100699407A patent/CN100563166C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1863066A (en) | 2006-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100563166C (en) | The method that link bandwidth is dynamically adjusted | |
| US10257596B2 (en) | Systems and methods for managing excess optical capacity and margin in optical networks | |
| US9455788B2 (en) | Hitless modulation scheme change systems and methods in optical networks | |
| US7876688B2 (en) | Traffic protection in a communication network | |
| CN100508469C (en) | Method and device for regulating broadband in broad band demand distribution service | |
| EP3965470B1 (en) | Bandwidth information notification method, network node and communication system | |
| CN101814953B (en) | Method and system for realizing automatic protection switching of transmission equipment | |
| EP2562969B1 (en) | Method, apparatus and system for transmitting sdh/sonet section overhead bytes | |
| CN101656630A (en) | Service protection method and system | |
| CN106685783A (en) | Ring network protection method and system | |
| CN101119161A (en) | Fail processing system and method of transmission equipment | |
| JP4526495B2 (en) | Path capacity increase / decrease judgment method and communication system | |
| US20120087237A1 (en) | System and method for protecting payload information in radio transmission | |
| CN101051854B (en) | Irregular medium protecting method for passive optical network | |
| CN101686420A (en) | Information transmission method in an optical transport network and network elements | |
| WO2012079328A1 (en) | Switching method and system for multiplex section protection and packet transport network device | |
| EP2661015A1 (en) | Method and system for detecting signal degrade (sd) alarm | |
| CN102209036B (en) | Generalized multi-protocol label switching (GMPLS) protocol message processing method, device and system | |
| CN103684811A (en) | Service protection method and system of composite link | |
| CN104618257A (en) | Traffic control method, optical network unit (ONU) and optical line terminal (OLT) device | |
| US7983154B2 (en) | Method for increasing/reducing band data rate of ring-based network and node apparatus of the ring-based network | |
| CN103546321A (en) | RPR energy-saving management method and device | |
| EP2566114A1 (en) | Method and network equipment for dynamically adjusting switching loop | |
| CN106470085A (en) | Communication means based on SDH SDH and SDH equipment | |
| CN101635668A (en) | Method and system for transmitting and controlling ethernet data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20170511 |