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We're excited to announce that Google Cloud Platform (GCP) now features a cutting-edge new congestion control algorithm, TCP BBR, which achieves higher bandwidths and lower latencies for internet traffic. This is the same BBR that powers TCP traffic from google.com and that improved YouTube network throughput by 4 percent on average globally â and by more than 14 percent in some countries. BBR all
MTU/MSS ã®è¨ç® IP ãããã Ethernet ãã¬ã¼ã ã®è¨ç®ã¯çµæ§å¤§å¤ã ããã©ããã®ãµã¤ãã使ãã°ããã¨ã©ã¯ã«å°åºã§ãã¾ãã https://baturin.org/tools/encapcalc/ ãã¨ãã° MTU 1454 ã®ç°å¢ï¼ãã¬ãã網㧠ISP 㨠PPPoE ã§æ¥ç¶ããå ´åï¼ã® MSS ã¯æ¬¡ã®ç»åã®ã¨ãã 1414 ã¨è¨ç®å¯è½ã§ãã ãã® MTU 1454 ã®æ ¹æ ã¯ï¼ãã¬ããç¶²ã§ã¯ PPPoE ã§æ¥ç¶ããéï¼NTT ã®å容ãã«ããäºæ¥è è£ ç½®ã¾ã§ã®é㯠L2TP ã§æ¥ç¶ãã¦ããï¼ããã§ PPPoE ããããèªè¨¼ç¨ã® PPP ãããã ãæ®ãã¦åãæãï¼PPP over L2TP ã®ç¶æ ã«ããã¨ï¼IP (20 byte) + UDP (8 byte) + PPP (2 byte) + L2TP (16 byte) = 46 byte ãªã®ã§ï¼1500 - 46 = 14
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Wired networks are everywhere whether you like it not. Almost every building is wired inside out, from businesses to schools to hotels. Unfortunately in most cases, little or no thought given to the physical security of the wiring. Donât take my word for it, just lift a ceiling tile in any hallway and take a peek for your self. This indirectly affect wireless networks as well, as the Access Points
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Sakura Cloud is a service developed and released in 2011. We use InfiniBand, witch is rare as an Internet service and it is used for connection between server and storage. In this presentation, we will briefly introduce the configuration of the system and explain the reasons and usage if InfiniBand. We are going to introduce operational comparisons and meris demerits with the services provided by
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