TWI456950B - 網路系統及通訊流量控制方法 - Google Patents
網路系統及通訊流量控制方法 Download PDFInfo
- Publication number
- TWI456950B TWI456950B TW100132978A TW100132978A TWI456950B TW I456950 B TWI456950 B TW I456950B TW 100132978 A TW100132978 A TW 100132978A TW 100132978 A TW100132978 A TW 100132978A TW I456950 B TWI456950 B TW I456950B
- Authority
- TW
- Taiwan
- Prior art keywords
- packet
- switch
- storm
- sampling
- discarding
- Prior art date
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]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
- H04L47/323—Discarding or blocking control packets, e.g. ACK packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/555—Error detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/557—Error correction, e.g. fault recovery or fault tolerance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/38—Flow based routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/64—Routing or path finding of packets in data switching networks using an overlay routing layer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/70—Routing based on monitoring results
Claims (8)
- 一種網路系統,其包括:開關,其依據內部的流動表所登錄之項目,轉送封包;以及控制器,當判斷對該開關進行封包取樣的結果為所取樣的封包為流量風暴的原因時,針對該開關,設定指示該封包的配對條件及定義丟棄該封包的動作的丟棄用項目;其中該開關,在發生流量風暴時,依據該丟棄用項目,以流動單位丟棄肇因的封包。
- 如申請專利範圍第1項所述之網路系統,其中該控制器包括:定期取得從該開關轉送封包的統計資訊的裝置;從該統計資訊檢測得知轉送封包的增加量高過設定閾值時,若從前一次封包取樣結束時已經過特定時間,則對該開關開始封包取樣的裝置;從該統計資訊檢測得知轉送封包的增加量低於設定閾值時,結束對於該開關的封包取樣的裝置。
- 如申請專利範圍第1或2項所述之網路系統,該控制器更包括:從該封包取樣的結果,判斷屬於廣播風暴、多播風暴、或者單播風暴中何者的裝置;若為廣播風暴、多播風暴、或者單播風暴中任一者,則將所取樣的封包判斷為流量風暴的肇因之裝置。
- 一種控制器,其包括: 監視依據內部的流動表所登錄之項目轉送封包的開關,對該開關進行封包取樣的裝置;當判斷對該開關進行封包取樣的結果所取樣的封包為流量風暴的原因時,針對該開關,設定指示該封包的配對條件及定義丟棄該封包的動作的丟棄用項目,在該開關發生流量風暴時,控制該開關,使其依據該丟棄用項目,以流動單位丟棄肇因的封包的裝置。
- 一種通訊流量控制方法,其包括下列步驟:在開關中,依據內部的流動表所登錄之項目,轉送封包;在控制器中,當判斷對該開關進行封包取樣的結果所取樣的封包為流量風暴的原因時,針對該開關,設定指示該封包的配對條件及定義丟棄該封包的動作的丟棄用項目;在該開關中,當發生流量風暴時,依據該丟棄用項目,以流動單位丟棄肇因的封包。
- 如申請專利範圍第5項所述之通訊流量控制方法,更包括:在該控制器中,定期取得從該開關轉送封包的統計資訊的步驟;從該統計資訊檢測得知轉送封包的增加量高過設定閾值時,若從前一次封包取樣結束時已經過特定時間,則對該開關開始封包取樣的步驟;從該統計資訊檢測得知轉送封包的增加量低於設定閾 值時,結束對於該開關的封包取樣的步驟。
- 如申請專利範圍第5或6項所述之通訊流量控制方法,更包括:在該控制器中,從該封包取樣的結果,判斷屬於廣播風暴、多播風暴、或者單播風暴中何者的步驟;若為廣播風暴、多播風暴、或者單播風暴中任一者,則將所取樣的封包判斷為流量風暴的肇因之步驟。
- 一種儲存媒體,其儲存一程式,用以使得一計算機執行下列步驟:監視依據內部的流動表所登錄之項目轉送封包的開關,對該開關進行封包取樣的步驟;當判斷對該開關進行封包取樣的結果所取樣的封包為流量風暴的原因時,針對該開關,設定指示該封包的配對條件及定義丟棄該封包的動作的丟棄用項目,在該開關發生流量風暴時,控制該開關,使其依據該丟棄用項目,以流動單位丟棄肇因的封包的步驟。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010242248 | 2010-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW201225587A TW201225587A (en) | 2012-06-16 |
TWI456950B true TWI456950B (zh) | 2014-10-11 |
Family
ID=45993546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW100132978A TWI456950B (zh) | 2010-10-28 | 2011-09-14 | 網路系統及通訊流量控制方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130188489A1 (zh) |
EP (1) | EP2634977A4 (zh) |
JP (1) | JP5510687B2 (zh) |
CN (1) | CN103181128A (zh) |
CA (1) | CA2814830A1 (zh) |
RU (1) | RU2576480C2 (zh) |
TW (1) | TWI456950B (zh) |
WO (1) | WO2012056816A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9825850B2 (en) | 2015-06-30 | 2017-11-21 | Industrial Technology Research Institute | Network controlling method and network controller |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3461077A1 (en) | 2011-01-13 | 2019-03-27 | NEC Corporation | Network system and routing method |
US9270476B2 (en) * | 2012-01-17 | 2016-02-23 | Telefonaktiebolaget L M Ericsson | Methods and apparatus for network protection |
US9184995B2 (en) * | 2012-04-11 | 2015-11-10 | Gigamon Inc. | Traffic visibility in an open networking environment |
JP6059336B2 (ja) | 2012-04-13 | 2017-01-11 | テケレック・インコーポレイテッドTekelec, Inc. | Diameter過負荷制御を実行するための方法、システムおよびコンピュータ読取可能媒体 |
CN103929334B (zh) | 2013-01-11 | 2018-02-23 | 华为技术有限公司 | 网络异常通知方法和装置 |
US9537904B2 (en) | 2013-01-24 | 2017-01-03 | Tekelec, Inc. | Methods, systems, and computer readable media for using policy knowledge of or obtained by a policy and charging rules function (PCRF) for needs based forwarding of bearer session traffic to network nodes |
US9609086B2 (en) | 2013-03-15 | 2017-03-28 | International Business Machines Corporation | Virtual machine mobility using OpenFlow |
US9104643B2 (en) | 2013-03-15 | 2015-08-11 | International Business Machines Corporation | OpenFlow controller master-slave initialization protocol |
US9769074B2 (en) | 2013-03-15 | 2017-09-19 | International Business Machines Corporation | Network per-flow rate limiting |
US9118984B2 (en) | 2013-03-15 | 2015-08-25 | International Business Machines Corporation | Control plane for integrated switch wavelength division multiplexing |
US9444748B2 (en) | 2013-03-15 | 2016-09-13 | International Business Machines Corporation | Scalable flow and congestion control with OpenFlow |
US9596192B2 (en) | 2013-03-15 | 2017-03-14 | International Business Machines Corporation | Reliable link layer for control links between network controllers and switches |
US9407560B2 (en) * | 2013-03-15 | 2016-08-02 | International Business Machines Corporation | Software defined network-based load balancing for physical and virtual networks |
US20140301226A1 (en) * | 2013-04-09 | 2014-10-09 | Electronics And Telecommunications Research Institute | Apparatus and method for network monitoring and packet inspection |
WO2014175335A1 (ja) * | 2013-04-24 | 2014-10-30 | 日本電気株式会社 | 制御装置、計算機システム、通信制御方法及びプログラム |
CN104243337B (zh) * | 2013-06-09 | 2017-09-01 | 新华三技术有限公司 | 一种跨集群负载均衡的方法及装置 |
US9450872B2 (en) | 2013-06-24 | 2016-09-20 | Oracle International Corporation | Methods, systems and computer readable media for collecting and distributing diameter overload control information to non-adjacent nodes |
US9391897B2 (en) * | 2013-07-31 | 2016-07-12 | Oracle International Corporation | Methods, systems, and computer readable media for mitigating traffic storms |
US9369386B2 (en) | 2013-07-31 | 2016-06-14 | Oracle International Corporation | Methods, systems, and computer readable media for destination-host defined overload scope |
US9240949B2 (en) | 2013-07-31 | 2016-01-19 | Oracle International Corporation | Methods, systems and computer readable media for predicting overload conditions using load information |
CN104348656B (zh) * | 2013-08-07 | 2018-09-07 | 中国移动通信集团北京有限公司 | 一种数据采集方法和装置 |
EP3039843B1 (de) * | 2013-08-26 | 2023-01-11 | Continental Automotive Technologies GmbH | Filterverfahren zur anpassung einer rechenlast |
US9537775B2 (en) | 2013-09-23 | 2017-01-03 | Oracle International Corporation | Methods, systems, and computer readable media for diameter load and overload information and virtualization |
JP6127900B2 (ja) * | 2013-10-18 | 2017-05-17 | 富士通株式会社 | パケット処理装置、パケット処理方法、パケット処理プログラム |
CN104579810B (zh) * | 2013-10-23 | 2019-10-25 | 中兴通讯股份有限公司 | 软件定义网络流量采样方法和系统 |
US9838483B2 (en) | 2013-11-21 | 2017-12-05 | Oracle International Corporation | Methods, systems, and computer readable media for a network function virtualization information concentrator |
CN104660565B (zh) | 2013-11-22 | 2018-07-20 | 华为技术有限公司 | 恶意攻击的检测方法和装置 |
US11388082B2 (en) | 2013-11-27 | 2022-07-12 | Oracle International Corporation | Methods, systems, and computer readable media for diameter routing using software defined network (SDN) functionality |
CN103746928A (zh) * | 2013-12-30 | 2014-04-23 | 迈普通信技术股份有限公司 | 利用访问控制列表控制流量的方法和系统 |
CN104796340B (zh) * | 2014-01-22 | 2018-11-27 | 新华三技术有限公司 | 一种组播数据传输方法和设备 |
JP6076937B2 (ja) * | 2014-03-28 | 2017-02-08 | 株式会社日立製作所 | パケット伝送システムおよびネットワークコントローラ |
CN104113839A (zh) * | 2014-07-14 | 2014-10-22 | 蓝盾信息安全技术有限公司 | 基于sdn的移动数据安全保护系统及方法 |
US9749242B2 (en) | 2014-08-20 | 2017-08-29 | At&T Intellectual Property I, L.P. | Network platform as a service layer for open systems interconnection communication model layer 4 through layer 7 services |
US10291689B2 (en) | 2014-08-20 | 2019-05-14 | At&T Intellectual Property I, L.P. | Service centric virtual network function architecture for development and deployment of open systems interconnection communication model layer 4 through layer 7 services in a cloud computing system |
US9800673B2 (en) | 2014-08-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Service compiler component and service controller for open systems interconnection layer 4 through layer 7 services in a cloud computing system |
US9742690B2 (en) | 2014-08-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Load adaptation architecture framework for orchestrating and managing services in a cloud computing system |
US9473567B2 (en) | 2014-08-20 | 2016-10-18 | At&T Intellectual Property I, L.P. | Virtual zones for open systems interconnection layer 4 through layer 7 services in a cloud computing system |
US10218604B2 (en) * | 2015-01-19 | 2019-02-26 | Hewlett Packard Enterprise Development Lp | Engines to prune overlay network traffic |
US9917729B2 (en) | 2015-04-21 | 2018-03-13 | Oracle International Corporation | Methods, systems, and computer readable media for multi-layer orchestration in software defined networks (SDNs) |
US10027760B2 (en) | 2015-05-22 | 2018-07-17 | Oracle International Corporation | Methods, systems, and computer readable media for short and long term policy and charging rules function (PCRF) load balancing |
US10439929B2 (en) * | 2015-07-31 | 2019-10-08 | Avago Technologies International Sales Pte. Limited | Graceful recovery of a multicast-enabled switch |
CN105187324B (zh) * | 2015-08-21 | 2018-01-30 | 上海斐讯数据通信技术有限公司 | 一种sdn流转发的数量限制方法和控制系统 |
TWI599204B (zh) * | 2016-01-28 | 2017-09-11 | 神雲科技股份有限公司 | 伺服器的封包過濾方法及基板管理控制器 |
JP6724427B2 (ja) * | 2016-03-07 | 2020-07-15 | 日本電気株式会社 | コントローラ、通信スイッチ、通信システム、通信制御方法、及びプログラム |
RU2618191C1 (ru) * | 2016-04-22 | 2017-05-02 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Академия Федеральной службы охраны Российской Федерации" (Академия ФСО России) | Система передачи трафика в мультисервисных сетях связи |
US10264040B2 (en) * | 2016-08-03 | 2019-04-16 | Big Switch Networks, Inc. | Systems and methods to manage multicast traffic |
CN108156014B (zh) * | 2016-12-06 | 2021-08-13 | 华为技术有限公司 | 一种环路故障处理方法和交换机 |
US11627111B2 (en) * | 2020-03-02 | 2023-04-11 | Cisco Technology, Inc. | Systems and methods for implementing universal targets in network traffic classification |
CN114050907B (zh) * | 2020-07-23 | 2023-05-02 | 华为技术有限公司 | 网络数据包的过滤方法,终端设备和可读存储介质 |
CN112073333B (zh) * | 2020-08-28 | 2022-05-06 | 苏州浪潮智能科技有限公司 | 一种基于SONiC开发的智能容器化流量风暴控制方法与系统 |
CN112187639B (zh) * | 2020-08-31 | 2021-11-19 | 西安交通大学 | 一种基于流属性的数据包路径编码的生成方法及系统 |
CN115941534A (zh) * | 2022-12-08 | 2023-04-07 | 贵州电网有限责任公司 | 一种针对电力系统局域网的网络风暴源溯源方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004056340A (ja) * | 2002-07-18 | 2004-02-19 | Nec Corp | Ipフロー多段ハッシュ装置、ipフロー多段ハッシュ方法、ipフロー多段ハッシュプログラム及びその記録媒体 |
TW200503473A (en) * | 2003-06-30 | 2005-01-16 | Intel Corp | System and method for dynamically configuring and transitioning wired and wireless networks |
US7088701B1 (en) * | 2000-04-14 | 2006-08-08 | Qualcomm, Inc. | Method and apparatus for adaptive transmission control in a high data rate communication system |
JP2010141731A (ja) * | 2008-12-12 | 2010-06-24 | Mitsubishi Electric Corp | レイヤ2スイッチ |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5636345A (en) * | 1995-03-30 | 1997-06-03 | Bay Networks, Inc. | Method and apparatus for detecting and preventing broadcast storms on an emulated local area network |
JPH11112544A (ja) | 1997-10-01 | 1999-04-23 | Hitachi Ltd | Lanスイッチ |
US7274665B2 (en) * | 2002-09-30 | 2007-09-25 | Intel Corporation | Packet storm control |
JP4667129B2 (ja) | 2005-06-13 | 2011-04-06 | 富士通株式会社 | 通信制御方法及び,これを適用する通信装置 |
CN101286996A (zh) * | 2008-05-30 | 2008-10-15 | 北京星网锐捷网络技术有限公司 | 一种风暴攻击抵抗方法与装置 |
CN101364999B (zh) * | 2008-09-18 | 2012-07-04 | 华为技术有限公司 | 一种基于流的服务质量处理的方法、设备及系统 |
CN102349268B (zh) * | 2009-03-09 | 2015-11-25 | 日本电气株式会社 | OpenFlow通信系统和OpenFlow通信方法 |
JP2010242248A (ja) | 2009-04-03 | 2010-10-28 | Teijin Ltd | 超微細炭素繊維の製造方法 |
US9124515B2 (en) * | 2010-11-22 | 2015-09-01 | Hewlett-Packard Development Company, L.P. | Elephant flow detection in a computing device |
US8879397B2 (en) * | 2011-05-13 | 2014-11-04 | Polytechnic Institute Of New York University | Balancing load in a network, such as a data center network, using flow based routing |
-
2011
- 2011-09-12 JP JP2012540733A patent/JP5510687B2/ja not_active Expired - Fee Related
- 2011-09-12 EP EP11835957.9A patent/EP2634977A4/en not_active Withdrawn
- 2011-09-12 CA CA2814830A patent/CA2814830A1/en not_active Abandoned
- 2011-09-12 RU RU2013119723/08A patent/RU2576480C2/ru not_active IP Right Cessation
- 2011-09-12 US US13/823,722 patent/US20130188489A1/en not_active Abandoned
- 2011-09-12 CN CN2011800509694A patent/CN103181128A/zh active Pending
- 2011-09-12 WO PCT/JP2011/070726 patent/WO2012056816A1/ja active Application Filing
- 2011-09-14 TW TW100132978A patent/TWI456950B/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7088701B1 (en) * | 2000-04-14 | 2006-08-08 | Qualcomm, Inc. | Method and apparatus for adaptive transmission control in a high data rate communication system |
JP2004056340A (ja) * | 2002-07-18 | 2004-02-19 | Nec Corp | Ipフロー多段ハッシュ装置、ipフロー多段ハッシュ方法、ipフロー多段ハッシュプログラム及びその記録媒体 |
TW200503473A (en) * | 2003-06-30 | 2005-01-16 | Intel Corp | System and method for dynamically configuring and transitioning wired and wireless networks |
JP2010141731A (ja) * | 2008-12-12 | 2010-06-24 | Mitsubishi Electric Corp | レイヤ2スイッチ |
Non-Patent Citations (1)
Title |
---|
Kyriakos Zarifis, Georgia Kontesidou, "Openflow Virtual Networking A Flow-Based Network Virtualization Architecture",2009 http://www.diva-portal.org/smash/get/diva2%3A302700/FULLTEXT01.pdf Parulkar, Larry Peterson, Jennifer Rexford, Scott Shenker, Jonathan Turner, "OpenFlow: Enabling Innovation in Campus Networks", 2008/03/14 OpenFlow Switch Specification v0.8.9 2008/12/02 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9825850B2 (en) | 2015-06-30 | 2017-11-21 | Industrial Technology Research Institute | Network controlling method and network controller |
Also Published As
Publication number | Publication date |
---|---|
KR20130060349A (ko) | 2013-06-07 |
TW201225587A (en) | 2012-06-16 |
RU2576480C2 (ru) | 2016-03-10 |
JP5510687B2 (ja) | 2014-06-04 |
US20130188489A1 (en) | 2013-07-25 |
JPWO2012056816A1 (ja) | 2014-03-20 |
EP2634977A4 (en) | 2015-01-07 |
EP2634977A1 (en) | 2013-09-04 |
RU2013119723A (ru) | 2014-12-10 |
WO2012056816A1 (ja) | 2012-05-03 |
CN103181128A (zh) | 2013-06-26 |
CA2814830A1 (en) | 2012-05-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI456950B (zh) | 網路系統及通訊流量控制方法 | |
WO2012148620A4 (en) | Handling large volumes of internet live unicast content streams | |
EP2728948B1 (en) | Method, device and storage medium for adjusting wake-up period of terminal | |
JP2014534781A5 (zh) | ||
JP2016509437A5 (zh) | ||
EP2058736A3 (en) | Systems and methods for flow monitoring and sampling using flow identifiers | |
WO2015039519A1 (zh) | 数据处理的方法及装置 | |
WO2007144867A3 (en) | Voice over ip capturing | |
JP2010016909A5 (zh) | ||
EP1898563A3 (fr) | Procédé et système de commande à distance d'équipements domestiques | |
JP2014078858A5 (zh) | ||
WO2008091354A3 (en) | Triggering flow analysis at intermediary devices | |
JP2006352262A5 (zh) | ||
EP2528277A3 (en) | Multiple protocol correlation and topology detection in eHRPD networks | |
WO2018108071A1 (zh) | 选择转发路径的方法和设备 | |
JP2017509272A5 (zh) | ||
EP1906591A3 (en) | Method, device and system for detecting layer 2 loop | |
WO2015107385A3 (en) | Methods and network device for oversubscription handling | |
WO2008021470A3 (en) | Transient analysis of packet queuing loss in a broadcast network | |
JP2011530951A5 (zh) | ||
JP2019533358A5 (zh) | ||
JP2010074818A5 (zh) | ||
WO2016023487A1 (zh) | 基于静电除尘过滤器的除霾新风系统及其控制方法 | |
WO2010062020A3 (en) | System for controlling path maximum transmission unit by detecting repetitional ip packet fragmentation and method thereof | |
JP2009218743A5 (zh) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |