擁塞通知 的英文怎麼說
中文拼音 [yōngsètōngzhī]
擁塞通知
英文
becn-
Backward explicit congestion notification, becn
後向顯式擁塞通知Becn backward explicit congestion notification
反向顯示擁塞通知( 2 ) with the increasing applications of real - time multimedia on internet, an ecn - based tcp - friendly congestion control ( etcc ) scheme was proposed. the scheme emphasizes on the improvement of end host with the support of extended router. red was adopted in the router, and early congestion state was notified to the sender using ecn
（ 2 ）針對internet上與日俱增的實時多媒體應用，提出了一種基於ecn的tcp友好擁塞控制機制etcc ，該機制側重於端系統功能的改進，同時擴展了路由器的功能來支持端系統的工作，在路由器中採用red管理隊列長度，以ecn的方式將網路的早期擁塞狀況通知端主機，端系統根據相應的速率調節機制來調節數據的發送速率。Because internet is based on the bandwidth statistical multiplexing principle so there are lots of active flows competing limited bandwidth resource in a link. when network congestion occurs aqm must send congestion notification to adequate sources to reduce the traffic load and avoid queue overflow
由於網際網路是基於帶寬統計復用的，一條鏈路上有很多活躍流（ activeflows ）在競爭有限的帶寬資源，因此，進行擁塞通知時應充分考慮到瓶頸鏈路上流的數量，而red演算法並沒有考慮到這一點。When the traffic load becomes heavy mred increases the value of maxp, and on the other hand when the traffic load becomes light mred decreases the value of maxp, and therefore mred can effectively adjust the congestion notification sending rate and stabilize the queue size. the differentiated services architecture, proposed by the ietf diffserv working group has recently become the preferred service model for addressing qos issues in ip networks because of its simplicity and scalability
當tcp連接數很大也就是擁塞程度嚴重時需要採用激進的方法，也即增大max _ p的值；當tcp連接數較小也就是擁塞程度較輕時需要採用保守的方法，也即減小max _ p的值；從而及時調整向源端發送擁塞通知的速率，維持隊列長度的穩定，避免不必要的傳輸延時和抖動。Meanwhile, to further solve the load balancing problem of manets, aolr introduced several mechanisms, such as the admission control mechanism, backward congestion restrain mechanism, shortcut enforcement mechanism, and the noise - encouraged route - selection mechanism, in order to dynamically perceive the load of nodes and increase the adaptability to it
同時，為了進一步的解決自組網中的負載均衡問題，在aolr中引入了準入控制規則、擁塞反向抑制規則、捷徑增強規則以及噪聲選路規則，通過對節點負載狀態的動態感知增加節點對負載的動態適應能力。It reframes the traceback problem as a polynomial reconstruction problem, and uses techniques from algebraic coding theory to provide robust methods of transmission and restriction. the scheme is a new solution to the traceback problem during a dos attack ; the honeypot for ddos, which is a tool of traceback, lures the attacker to believe that he successfully compromised a slave for his needs, convincingly simulating the architecture of a potential ddos attack ; the source - based approach to ddos defense, which is a useful adjunt to traceback systems, deploys a ddos defense system at source - end networks. attacks are detected by monitoring two - way traffic flows, and the attacks originating from source networks are stopped by rate - limiting ; the routing mechanism based on pushback treats ddos attacks as a congestion - control problem
最後，就有關ddos攻擊反向追蹤問題，從四個方面對其解決方案進行了研究：在分析比較幾種反向追蹤演算法的基礎上，著重研究了代數方法編碼反向追蹤信息的方案，該方案把追蹤重構問題當作多項式重構問題，使用代數編碼理論技術提供魯棒的傳送和重構方法，是dos攻擊過程中的反向追蹤問題的一種新的解決方法； ddos陷阱作為反向追蹤的工具，引誘攻擊者相信自己成功與所需的傀儡主機通話，令人信服地模擬出潛在ddos攻擊體系結構；基於源的ddos防禦方法作為反向追蹤有用的補充，將防禦系統部署在源網路，通過監控雙向流量檢測攻擊和限制速率終止來自源的攻擊；基於向後倒推的防禦ddos的路由機制把ddos攻擊看作擁塞控制問題，添加功能到每個路由器來檢測並優先丟棄可能屬于攻擊的包，通過向後倒推上級路由器也得到通知而把這樣的包丟棄。When congestion occurs, red randomly select sources to notify congestion before queue overflow and once tcp sources receive the notification it will reduce the congestion window to decrease the packet sending rate, and therefore, mitigate the network congestion
Red的基本思想是路由器通過監控隊列的平均長度來探測擁塞。一旦發現擁塞逼近，就隨機地選擇源端來通知擁塞，使他們在隊列溢出導致丟包之前減小擁塞窗口，降低發送數據速度。分享友人