[B! qos] mogwaingã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

mogwaing id:mogwaing

qosã«é–¢ã™ã‚‹mogwaingã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

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ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ãŠã¹ã‚“ãã‚‡ã—ã¾ã›ã‚“ã‹ï¼Ÿ Cisco CCNA/CCNP/CCIEã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¹ãƒšã‚·ãƒ£ãƒªã‚¹ãƒˆè©¦é¨“ã®å‹‰å¼·ã«ãƒ”ãƒƒã‚¿ãƒª: QoS ã‚¢ãƒ¼ã‚«ã‚¤ãƒ–
ï¼ˆæ‰€å±žã‚«ãƒ†ã‚´ãƒªãƒ¼ï¼šQoS---æŠ•ç¨¿æ—¥æ™‚ï¼š2008å¹´3æœˆ14æ—¥ï¼‰ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰é…å»¶VoIPãªã©ã®ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ é€šä¿¡ã‚’è¡Œã†ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã§ã¯ã€ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰ é…å»¶ã‚’ãã¡ã‚“ã¨åˆ¶å¾¡ã™ã‚‹ã“ã¨ãŒé‡è¦ã§ã™ã€‚VoIPã®éŸ³å£°é€šè©±ã§é€šè©±å“è³ªã‚’ä¿ã¤ãŸ ã‚ã«ã¯ã€ç›®å®‰ã¨ã—ã¦ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰é…å»¶ã‚’150msä»¥å†…ã«ã™ã‚‹ã“ã¨ãŒæŒ™ã’ã‚‰ã‚Œ ã¦ã„ã¾ã™ã€‚ ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰é…å»¶ã¨ã¯ã€é€ä¿¡å…ƒã‹ã‚‰é€ä¿¡ã•ã‚ŒãŸãƒ‘ã‚±ãƒƒãƒˆãŒã‚ã¦å…ˆã«å±Šãã¾ ã§ã®æ™‚é–“ã§ã™ã€‚ ä¸‹ã®å›³ã®é€ä¿¡å…ƒã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿Aã‹ã‚‰é€ä¿¡ã•ã‚ŒãŸãƒ‘ã‚±ãƒƒãƒˆãŒã‚ã¦å…ˆã®ã‚³ãƒ³ãƒ”ãƒ¥ ãƒ¼ã‚¿Bã«å±Šãã¾ã§ã«å¿…è¦ãªæ™‚é–“ãŒã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰é…å»¶ã«ãªã‚Šã¾ã™ã€‚ ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰é…å»¶ã¯ã€ãƒ‘ã‚±ãƒƒãƒˆã®è»¢é€çµŒè·¯ä¸Šã®ä¸‹è¨˜ã®é…å»¶ã‚’ç´¯ç©ã—ãŸã‚‚ã® ã«ãªã‚Šã¾ã™ã€‚ ãƒ»å‡¦ç†é…å»¶(Processing Delay) ãƒ»ã‚ãƒ¥ãƒ¼ã‚¤ãƒ³ã‚°é…å»¶(Queuing Delay) ãƒ»ã‚·ãƒªã‚¢ãƒ«åŒ–é…å»¶(Seliarization Delay) ãƒ»ä¼æ¬é…å»¶
mogwaing 2010/08/19
network

qos
ãƒªãƒ³ã‚¯
Cisco
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mogwaing 2010/08/19
policing and shaping

network

qos
ãƒªãƒ³ã‚¯
interactive webmuseum | telecommunication
Traffic Shaping Is the regulation of the rate at which flows are allowed to inject packets into the network and is therfore one of the cornerstones of any QoS architecture. Bucket mechanisms are abstractions that can be used to characterize the traffic rate. Token Bucket A Token Bucket consists of a bucket that can hold up to b tokens. Tokens are generated at a constant rate of r tokens per seco
mogwaing 2010/08/04
ãŠã‚‚ã—ã‚ã„

traffic shaping

network

qos

leaky bucket

token bucket
ãƒªãƒ³ã‚¯
ãƒªãƒ¼ã‚ãƒ¼ãƒã‚±ãƒƒãƒˆ - Wikipedia
ãƒªãƒ¼ã‚ãƒ¼ãƒã‚±ãƒƒãƒˆï¼ˆè‹±: leaky bucketï¼‰ã¨ã¯ã€ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚·ã‚§ãƒ¼ãƒ”ãƒ³ã‚°ãªã©ã§ä½¿ã‚ã‚Œã‚‹ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã§ã‚ã‚‹ã€‚ä¸€èˆ¬ã«ã“ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã¯ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«æ³¨å…¥ã•ã‚Œã‚‹ãƒ‡ãƒ¼ã‚¿ã®è»¢é€ãƒ¬ãƒ¼ãƒˆã‚’åˆ¶å¾¡ã™ã‚‹ã®ã«ä½¿ã‚ã‚Œã€ãƒ‡ãƒ¼ã‚¿è»¢é€ãƒ¬ãƒ¼ãƒˆã®ã€Œãƒãƒ¼ã‚¹ãƒˆæ€§ã€ã‚’å¹³æº–åŒ–ã™ã‚‹ã€‚ ãªãŠã€ãƒã‚±ãƒƒãƒˆ (bucket) ã¨ã¯ã€ãƒã‚±ãƒ„ã®ã“ã¨ã§ã‚ã‚Šã€è»¢é€ã™ã¹ããƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚’é›†ç©ã™ã‚‹æŠ½è±¡åŒ–ã•ã‚ŒãŸã‚³ãƒ³ãƒ†ãƒŠã§ã‚ã‚‹ï¼ˆå®Ÿè£…ã¯ä¾‹ãˆã°ãƒãƒƒãƒ•ã‚¡ã‚„ã‚ãƒ¥ãƒ¼ï¼‰ã€‚ ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚·ã‚§ãƒ¼ãƒ”ãƒ³ã‚°ã§ã¯ãƒªãƒ¼ã‚ãƒ¼ãƒã‚±ãƒƒãƒˆã®ã»ã‹ã«ãƒˆãƒ¼ã‚¯ãƒ³ãƒã‚±ãƒƒãƒˆã¨ã„ã†ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã‚‚ã‚ˆãåˆ©ç”¨ã™ã‚‹ã€‚ã“ã®2ã¤ã¯èª¤ã£ã¦æ··åŒã•ã‚Œã‚„ã™ã„ã€‚ã“ã‚Œã‚‰ã¯æ€§è³ªã‚‚ç•°ãªã‚Šã€ç›®çš„ã‚‚ç•°ãªã‚‹[1]ã€‚å¤§ããªé•ã„ã¯ã€ãƒªãƒ¼ã‚ãƒ¼ãƒã‚±ãƒƒãƒˆãŒãƒ‡ãƒ¼ã‚¿è»¢é€ãƒ¬ãƒ¼ãƒˆã®ä¸Šé™ã‚’è¨å®šã™ã‚‹ã®ã«å¯¾ã—ã¦ã€ãƒˆãƒ¼ã‚¯ãƒ³ãƒã‚±ãƒƒãƒˆã¯ãƒ‡ãƒ¼ã‚¿è»¢é€ãƒ¬ãƒ¼ãƒˆã®å¹³å‡ã«åˆ¶é™ã‚’èª²ã—ã¦ã€ã‚ã‚‹ç¨‹åº¦ã®ãƒãƒ¼ã‚¹ãƒˆæ€§ã‚’è¨±å®¹ã™ã‚‹ã€‚ ãƒªãƒ¼ã‚ãƒ¼ãƒã‚±ãƒƒãƒˆã¯ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«é€ä¿¡ã™ã‚‹ãƒˆ
mogwaing 2010/08/04
network

qos
ãƒªãƒ³ã‚¯
QoSã¨ã¯ -- Keyï¼šé›‘å¦äº‹å…¸
mogwaing 2010/08/03
network

qos
ãƒªãƒ³ã‚¯
QoS æ¦‚è¦
QoSï¼ˆQuarity Of Serviceï¼‰ã«ã¤ã„ã¦å°‘ã—æ›¸ã„ã¦ã¿ã¾ã™ã€‚...ãƒ¬ã‚¤ãƒ¤ï¼“ã®ã‚«ãƒ†ã‚´ãƒªã«æ›¸ãã®ã‚‚ã©ã†ã‹ã¨æ€ã„ã¾ã—ãŸãŒã€‚ ä»Šæ™‚ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã§ã¯ã€FTPã‚„HTTPã®ãƒ‡ãƒ¼ã‚¿ã‚’é‹ã¶ã“ã¨ã¯ã‚‚ã¡ã‚ã‚“ã€é›»è©±ï¼ˆVoiceï¼‰ã‚„Videoé…ä¿¡ã‚‚å½“ãŸã‚Šå‰ã®ä¸–ç•Œã«ãªã£ã¦ã„ã¾ã™ã€‚ FTPã‚„HTTPã®ãƒ‡ãƒ¼ã‚¿ã¯ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å†…ã§é…å»¶ãŒç™ºç”Ÿã—ãŸã‚Šã€ãƒ‘ã‚±ãƒƒãƒˆãƒã‚¹ãŒç™ºç”Ÿã—ã¦ã‚‚ã€ãƒ¦ãƒ¼ã‚¶ãŒã€Œã¡ã‚‡ã£ã¨é…ã„ãªï¼Ÿã€ ã¨æ„Ÿã˜ã‚‹ç¨‹åº¦ã§æ¸ˆã¿ã¾ã™ãŒã€Voiceã‚„Videoé…ä¿¡ã®å ´åˆã€é…å»¶ã‚„ãƒ‘ã‚±ãƒƒãƒˆãƒã‚¹ãŒç™ºç”Ÿã™ã‚‹ã¨ã€ã€Œé›»è©±ã®ä¼šè©±ãŒæˆã‚Šç«‹ãŸãªã„ã€ã€ ã€Œã‚®ã‚¯ã‚·ãƒ£ã‚¯ã—ãŸå‹•ãã®Videoã«ãªã£ã¦ã—ã¾ã†ã€ã¨ã„ã†ã‚ˆã†ã«ã€ä½¿ã„ç‰©ã«ãªã‚‰ãªã„ã‚±ãƒ¼ã‚¹ãŒã‚ã‚Šã¾ã™ã€‚ FTP,HTTP,voice,videoã‚’åŒä¸€ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ä¸Šã§ä½¿ç”¨ã—ã¦ã„ã‚‹å ´åˆã€voiceã‚„videoã«å®‰å®šã—ãŸãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å“è³ªã‚’æä¾›ã™ã‚‹ãŸã‚ã«ã€ voiceã‚„videoã‚’ãˆã“ã²ã„ãã—ã¦ã‚„ã‚‹
mogwaing 2010/08/03
network

qos

congestion control
ãƒªãƒ³ã‚¯
ãƒˆãƒ¼ã‚¯ãƒ³ãƒã‚±ãƒƒãƒˆ - Wikipedia
ãƒˆãƒ¼ã‚¯ãƒ³ãƒã‚±ãƒƒãƒˆï¼ˆè‹±: token bucketï¼‰ã¨ã¯ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¸ã®ãƒ‡ãƒ¼ã‚¿æµå…¥é‡ã‚’åˆ¶å¾¡ã™ã‚‹ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®ä¸€ç¨®ã§ã‚ã‚Šã€ãƒãƒ¼ã‚¹ãƒˆæ€§ã®ã‚ã‚‹ãƒ‡ãƒ¼ã‚¿é€ä¿¡ã‚’è¨±å®¹ã™ã‚‹ã€‚ã„ãã¤ã‹ã®ç”¨é€”ãŒã‚ã‚‹ãŒãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚·ã‚§ãƒ¼ãƒ”ãƒ³ã‚°ã®æ‰‹æ³•ã¨ã—ã¦ä½¿ã†ã“ã¨ãŒå¤šã„ã€‚ ãªãŠã€ãƒã‚±ãƒƒãƒˆ (bucket) ã¨ã¯ã€ãƒã‚±ãƒ„ã®ã“ã¨ã§ã‚ã‚Šã€è»¢é€ã™ã¹ããƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚’é›†ç©ã™ã‚‹æŠ½è±¡åŒ–ã•ã‚ŒãŸã‚³ãƒ³ãƒ†ãƒŠã§ã‚ã‚‹ï¼ˆå®Ÿè£…ã¯ä¾‹ãˆã°ãƒãƒƒãƒ•ã‚¡ã‚„ã‚ãƒ¥ãƒ¼ï¼‰ã€‚ ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚·ã‚§ãƒ¼ãƒ”ãƒ³ã‚°ã§ã¯ã€ãƒˆãƒ¼ã‚¯ãƒ³ãƒã‚±ãƒƒãƒˆã®ã»ã‹ã«ãƒªãƒ¼ã‚ãƒ¼ãƒã‚±ãƒƒãƒˆã‚‚ä½¿ã‚ã‚Œã‚‹ã€‚ã“ã®2ã¤ã¯èª¤ã£ã¦æ··åŒã•ã‚Œã‚„ã™ã„ã€‚ã“ã‚Œã‚‰ã¯æ€§è³ªã‚‚ç•°ãªã‚Šã€ç›®çš„ã‚‚ç•°ãªã‚‹[1]ã€‚å¤§ããªé•ã„ã¯ã€ãƒªãƒ¼ã‚ãƒ¼ãƒã‚±ãƒƒãƒˆãŒãƒ‡ãƒ¼ã‚¿è»¢é€ãƒ¬ãƒ¼ãƒˆã®ä¸Šé™ã‚’è¨å®šã™ã‚‹ã®ã«å¯¾ã—ã¦ã€ãƒˆãƒ¼ã‚¯ãƒ³ãƒã‚±ãƒƒãƒˆã¯ãƒ‡ãƒ¼ã‚¿è»¢é€ãƒ¬ãƒ¼ãƒˆã®å¹³å‡ã«åˆ¶é™ã‚’èª²ã—ã¦ã€ã‚ã‚‹ç¨‹åº¦ã®ãƒãƒ¼ã‚¹ãƒˆæ€§ã‚’è¨±å®¹ã™ã‚‹ã€‚ ãƒˆãƒ¼ã‚¯ãƒ³ãƒã‚±ãƒƒãƒˆã¯ã€ãƒã‚±ãƒƒãƒˆå†…ã®ãƒˆãƒ¼ã‚¯ãƒ³ã®å˜åœ¨ã«åŸºã¥ã„ã¦ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã®è»¢é€ã‚’ã„
mogwaing 2010/08/03
network

qos
ãƒªãƒ³ã‚¯
1