1銆佸紩瑷€锛�
闅ㄨ憲缍�(w菐ng)绲�(lu貌)鐨勬櫘鍙�锛岃ū澶氬柈浣嶉兘寤轰簡鑷繁鐨勫湌鍗€(q奴)缍�(w菐ng)锛屼娇鐢ㄧ殑缍�(w菐ng)绲�(lu貌)瑷�(sh猫)鍌欏拰鏈嶅嫏(w霉)鍣ㄦ棩鐩婂澶�銆傞€欎簺瑷�(sh猫)鍌欓兘鏈夎嚜宸辩殑鏅�(sh铆)閻�锛岃€屼笖鏄彲浠ヨ(di脿o)绡€(ji茅)鐨�銆備絾鏄劇(w煤)娉曚繚璀夌恫(w菐ng)绲�(lu貌)涓殑鎵€鏈夎ō(sh猫)鍌欏拰涓绘(j墨)鐨勬檪(sh铆)闁撴槸鍚屾鐨勶紝鍥�?y脿n)妾獲浜涙檪(sh铆)閻樻瘡澶╂渻(hu矛)鐢�(ch菐n)鐢熸暩(sh霉)绉�銆佺敋鑷虫暩(sh霉)鍒嗛悩鐨勮宸€傜稉(j墨ng)閬�(gu貌)闀�(zh菐ng)鏈熼亱(y霉n)琛�锛屾檪(sh铆)闁撳樊鏈�(hu矛)瓒婁締(l谩i)瓒婂ぇ锛岄€欑ó鍋忓樊鍦ㄥ柈姗�(j墨)涓奖闊夸笉澶ぇ锛屼絾鍦ㄧ恫(w菐ng)绲�(lu貌)鐠�(hu谩n)澧冧笅鐨勬噳(y墨ng)鐢ㄤ腑鍙兘鏈�(hu矛)寮曠櫦(f膩)鎰忔兂涓嶅埌鐨勫晱(w猫n)椤�銆傚鍦ㄥ垎甯冨紡瑷�(j矛)绠楃挵(hu谩n)澧冧腑锛岀敱浜庢瘡鍊�(g猫)涓绘(j墨)鏅�(sh铆)闁撲笉涓€鑷�锛屾渻(hu矛)閫犳垚鍚屼竴鎿嶄綔鍦ㄤ笉鍚屼富姗�(j墨)鐨勮閷勬檪(sh铆)闁撲笉涓€鑷达紝灏囧皫(d菐o)鑷存湇鍕�(w霉)鐒�(w煤)娉曟甯稿湴閫�(j矛n)琛�銆傞毃钁楀悇绋恫(w菐ng)绲�(lu貌)鎳�(y墨ng)鐢ㄧ殑涓嶆柗鐧�(f膩)灞�锛屽皪(du矛)鏅�(sh铆)闁撶殑瑕佹眰涔熻秺渚�(l谩i)瓒婇珮锛屾檪(sh铆)闁撲笉涓€鑷存渻(hu矛)寮曠櫦(f膩)瑷卞鍟�(w猫n)椤�銆傛繜(j矛)鍗楀敮灏氶浕瀛愭湁闄愬叕鍙歌嚜涓荤爺鐧�(f膩)鐢熺敘(ch菐n)鐨�缍�(w菐ng)绲�(lu貌)灏�(du矛)鏅�(sh铆)瑷�(sh猫)鍌�鎶婇€欎簺鍟�(w猫n)椤岀当(t菕ng)绲�(t菕ng)瑙ｆ焙銆�
2銆�NTP姒傝堪
灏囩恫(w菐ng)绲�(lu貌)鐠�(hu谩n)澧冧腑鐨勫悇绋ō(sh猫)鍌欐垨涓绘(j墨)鐨勬檪(sh铆)闁撲俊鎭�(骞存湀鏃ユ檪(sh铆)鍒嗙)鍩轰簬UTC(Universal Time Coordinated)鏅�(sh铆)闁撳亸宸檺瀹氬湪瓒冲灏忕殑鑼冨湇鍏�(n猫i)(濡�100ms)锛岄€欑ó鍚屾閬�(gu貌)绋嬪彨鍋氭檪(sh铆)闁撳悓姝ャ€�
鐩墠锛屾湁鍏╃ó閲嶈鐨勬檪(sh铆)闁撳悓姝ユ妧琛�(sh霉)锛屽嵆缍�(w菐ng)绲�(lu貌)鏅�(sh铆)闁撳崝(xi茅)璀�(Network Time Protocol锛�NTP)鍜岀洿鎺ラ€ｆ帴鏅�(sh铆)闁撳偝杓告妧琛�(sh霉)銆傚叾涓洿鎺ラ€ｆ帴鏅�(sh铆)闁撳偝杓告妧琛�(sh霉)锛岄渶瑕佹墍鏈夊鎴�(h霉)绔洿鎺ラ€ｆ帴鍒版(bi膩o)婧�(zh菙n)鏅�(sh铆)闁撴簮锛屼笉瀵�(sh铆)鐢ㄣ€�NTP閬╃敤浜庣恫(w菐ng)绲�(lu貌)鐠�(hu谩n)澧冧笅锛屽彲浠ュ湪涓€鍊�(g猫)鐒�(w煤)搴忕殑缍�(w菐ng)绲�(lu貌)鐠�(hu谩n)澧冧笅鎻愪緵绮剧⒑鍜屽仴澹殑鏅�(sh铆)闁撴湇鍕�(w霉)锛屾柟渚垮(sh铆)鐢�銆傞€欓噷鎴戝€戝彧瑷庤珫鍩轰簬NTP鍘熺悊鐨勬檪(sh铆)闁撳悓姝ユ妧琛�(sh霉)鍜屾噳(y墨ng)鐢�銆�
3銆�NTP宸ヤ綔鍘熺悊鍜屾噳(y墨ng)鐢�
3.1銆�NTP鍗�(xi茅)璀版杩�
NTP鏈€鏃╃敱缇庡湅(gu贸)Delaware澶у(xu茅)鐨勬暀鎺堣ō(sh猫)瑷�(j矛)瀵�(sh铆)鐝�(xi脿n)鐨�锛岀敱鏅�(sh铆)闁撳崝(xi茅)璀般€�ICMP鏅�(sh铆)闁撴埑娑堟伅鍙�IP鏅�(sh铆)闁撴埑閬搁爡(xi脿ng)鐧�(f膩)灞曡€屼締(l谩i)銆�NTP鐢ㄤ簬灏囪▓(j矛)绠楁(j墨)瀹㈡埗(h霉)鎴栨湇鍕�(w霉)鍣ㄧ殑鏅�(sh铆)闁撳悓姝ュ埌鍙︿竴鏈嶅嫏(w霉)鍣ㄦ垨鍙冭€冩檪(sh铆)閻樻簮銆傚畠浣跨敤UTC浣滅偤鏅�(sh铆)闁撴(bi膩o)婧�(zh菙n)锛屾槸鍩轰簬鐒�(w煤)閫ｆ帴鐨�IP 鍗�(xi茅)璀板拰UDP鍗�(xi茅)璀扮殑鎳�(y墨ng)鐢ㄥ堡鍗�(xi茅)璀�锛屼娇鐢ㄥ堡娆″紡鏅�(sh铆)闁撳垎甯冩ā鍨嬶紝鎵€鑳藉彇寰楃殑婧�(zh菙n)纰哄害渚濊炒(l脿i)浜庢湰鍦版檪(sh铆)閻樼‖浠剁殑绮剧⒑搴﹀拰灏�(du矛)瑷�(sh猫)鍌欏強閫�(j矛n)绋嬪欢閬茬殑鍤�(y谩n)鏍兼帶鍒�銆傚湪閰嶇疆鏅�(sh铆)锛�NTP鍙互鍒╃敤鍐椾綑鏈嶅嫏(w霉)鍣ㄥ拰澶氭缍�(w菐ng)绲�(lu貌)璺緫渚�(l谩i)鐛插緱鏅�(sh铆)闁撶殑楂樻簴(zh菙n)纰烘€у拰楂樺彲闈犳€с€傚(sh铆)闅涙噳(y墨ng)鐢ㄤ腑锛屽張鏈夌⒑淇濈绱�(j铆)绮惧害鐨勭啊(ji菐n)鍠殑缍�(w菐ng)绲�(lu貌)鏅�(sh铆)闁撳崝(xi茅)璀�(Simple Network Time Protocol锛�SNTP)銆�
3.2銆�NTP鐨勫伐浣滃師鐞�
褰遍熆NTP 鍗�(xi茅)璀扮簿纰哄害鏈€闂�(gu膩n)閸电殑鍘熷洜鍦ㄤ簬鐢辩恫(w菐ng)绲�(lu貌)寤堕伈鐨勯毃姗�(j墨)鎬ц€屽紩璧风殑鏅�(sh铆)閻樺欢閬茶▓(j矛)绠楃殑涓嶆簴(zh菙n)纰�銆傜敱浜庡欢閬蹭笉婧�(zh菙n)纰猴紝鎵€浠ョ劇(w煤)娉曚緷闈犲緸鏅�(sh铆)闁撴湇鍕�(w霉)鍣ㄥ埌瀹㈡埗(h霉)姗�(j墨)鐨勫柈閭婂偝杓镐締(l谩i)鍌抽仦绮剧⒑鐨勬檪(sh铆)闁撲俊鎭�銆傜偤浜嗚В姹洪€欏€�(g猫)鍟�(w猫n)椤�锛屽湪NTP鍗�(xi茅)璀颁腑浣跨敤鏅�(sh铆)闁撴湇鍕�(w霉)鍣ㄥ拰瀹㈡埗(h霉)姗�(j墨)涔嬮枔鐨勯洐鍚戜俊鎭氦鎻涘拰鏅�(sh铆)闁撴埑(timestamp)鐨勬蹇�銆�
鐪熷(sh铆)鐨勬檪(sh铆)閻樺亸宸€兼槸浠ユ脯(c猫)閲忔墍寰楃殑鍋忓樊鍊肩偤涓績鐨勶紝鑰屽叾鍙兘鐨勮畩鍖栬寖鍦嶅墖绛夐暦(zh菐ng)浜庢脯(c猫)閲忔墍寰楃殑寤堕伈銆傛瘡涓€姊�NTP娑堟伅閮藉寘鍚�3鍊�(g猫)鏅�(sh铆)闁撴埑锛岀4鍊�(g猫)鏅�(sh铆)闁撴埑鍓囩敱娑堟伅鐨勫埌閬�(d谩)鏅�(sh铆)鍒荤⒑瀹�銆傚洜姝�锛屾湇鍕�(w霉)鍣ㄥ拰瀹㈡埗(h霉)姗�(j墨)閮藉彲浠ュ柈鐛�(d煤)纰哄畾鏅�(sh铆)闁撳亸绉�銆傞€欑ó灏�(du矛)绋�(ch膿ng)鐨勯€ｇ簩(x霉)閲囨ǎ鐨勬檪(sh铆)闁撳偝杓告柟娉曠殑鍎�(y艒u)榛�(di菐n)鏄皪(du矛)鐧�(f膩)閫佸拰鎺ュ彈鐨勬秷鎭殑闋嗗簭娌�(m茅i)鏈夎姹�锛屽洜姝や笉闇€瑕佸彲闈犵殑鍌宠几閫斿緫銆傚緢椤劧锛屾渶绲傜殑婧�(zh菙n)纰哄害灏囧彇姹轰簬鐧�(f膩)閫佸拰鎺ュ彈璺緫鐨勭当(t菕ng)瑷�(j矛)鐗规€с€�
4. 缍�(w菐ng)绲�(lu貌)灏�(du矛)鏅�(sh铆)瑷�(sh猫)鍌�鍦ㄦ牎鍦掔恫(w菐ng)涓殑鎳�(y墨ng)鐢�
鍦ㄦ垜鏍℃牎鍦掔恫(w菐ng)绲�(lu貌)鍏�(n猫i)锛屽瓨鍦ㄥぇ閲忕恫(w菐ng)绲�(lu貌)瑷�(sh猫)鍌�銆佹湇鍕�(w霉)鍣ㄥ拰涓绘(j墨)锛屽畠鍊戞壙杓変簡鏍″湌缍�(w菐ng)涓殑瑷�(j矛)璨�(f猫i)銆佺董璀�(h霉)銆佺鐞嗙瓑鍔熻兘锛屽皪(du矛)鏅�(sh铆)闁撶殑婧�(zh菙n)纰哄害闇€姹傛瘮杓冮珮锛岃姹傚湪缍�(w菐ng)绲�(lu貌)涔嬮枔鍌抽仦鐨勪俊鎭兘澶犲湪鏅�(sh铆)闁撲笂淇濇寔楂樺害涓€鑷淬€�
缍�(w菐ng)绲�(lu貌)灏�(du矛)鏅�(sh铆)瑷�(sh猫)鍌�鍦ㄦ牎鍦掔恫(w菐ng)鍏�(n猫i)鐨勬噳(y墨ng)鐢ㄤ富瑕侀泦涓湪浠ヤ笅骞惧€�(g猫)鏂归潰锛�
4.1銆佺恫(w菐ng)绲�(lu貌)绠＄悊绯荤当(t菕ng)鐨勬棩蹇楀瑷�(j矛)锛氱暥(d膩ng)缍�(w菐ng)绲�(lu貌)涓嚭鐝�(xi脿n)鎯℃剰鏀绘搳琛岀偤鎴栫恫(w菐ng)绲�(lu貌)鏁呴殰鍟�(w猫n)椤屾檪(sh铆)锛岄渶瑕佺恫(w菐ng)绲�(lu貌)绠＄悊鍝℃牴鎿�(j霉)鏈夐棞(gu膩n)缍�(w菐ng)绲�(lu貌)瑷�(sh猫)鍌欎腑鐢�(ch菐n)鐢熺殑鏃ュ織閫�(j矛n)琛屽垎鏋愬拰鍒ゆ柗锛屼互渚夸簬鏌ユ壘鏀绘搳婧愬拰灏�(du矛)缍�(w菐ng)绲�(lu貌)閫犳垚鐨勫嵄瀹冲強鐢�(ch菐n)鐢熺殑鍘熷洜銆備絾鏄鏋滅恫(w菐ng)绲�(lu貌)涓檪(sh铆)闁撲笉鑳藉悓姝�锛岄偅涔堝悓涓€鍊�(g猫)琛岀偤鍦ㄤ笉鍚岃ō(sh猫)鍌欎腑鐢�(ch菐n)鐢熺殑鏃ュ織灏囦笉鑳藉簭鍒楀寲锛屼篃灏辩劇(w煤)娉曞皪(du矛)閫欎簺鍟�(w猫n)椤岄€�(j矛n)琛屽垎鏋愬拰瑙ｆ焙銆傚彟澶栫暥(d膩ng)缍�(w菐ng)绠′腑蹇冮噰鐢ㄥ榛�(di菐n)鏃ュ織瑷橀寗鏅�(sh铆)锛屽鏋滅恫(w菐ng)绲�(lu貌)鍚勫€�(g猫)绡€(ji茅)榛�(di菐n)鏅�(sh铆)闁撲笉鍚屾锛屼篃灏囬€犳垚鏃ュ織瑷橀寗鐨勬贩浜�銆傝嫢闇€瑕侀€欎簺淇℃伅蹇€熸簴(zh菙n)纰洪€�(j矛n)琛屾晠闅滃畾浣�锛屾簴(zh菙n)纰虹殑鏅�(sh铆)闁撴槸蹇呬笉鍙皯鐨�銆�
4.2銆佹噳(y墨ng)鐢ㄨ獚(r猫n)璀夐亷(gu貌)绋嬶細鏍″湌缍�(w菐ng)鍏�(n猫i)鐨勪竴浜涙噳(y墨ng)鐢ㄧ郴绲�(t菕ng)鍙婁互鍚庤寤虹殑涓€鍗￠€氱郴绲�(t菕ng)锛屽湪閫�(j矛n)琛岀敤鎴�(h霉)瑾�(r猫n)璀夌殑鏅�(sh铆)鍊�锛岃姹傜恫(w菐ng)绲�(lu貌)涓檪(sh铆)闁撳繀闋堝悓姝�銆傚洜?y脿n)妾嶫(r猫n)璀変腑鐨勬暩(sh霉)瀛楁檪(sh铆)闁撴埑鏈嶅嫏(w霉)瑕佹眰瀹㈡埗(h霉)绔娇鐢ㄦ湰鍦版檪(sh铆)闁撲綔鐐哄弮鏁�(sh霉)鑸囪獚(r猫n)璀夋湇鍕�(w霉)鍣ㄧ浜ゆ彌瑾�(r猫n)璀変俊鎭寘銆傚鏋滀笉鑳藉仛鍒扮恫(w菐ng)绲�(lu貌)涓殑鏅�(sh铆)闁撳悓姝�锛岄偅涔堢郴绲�(t菕ng)灏辨渻(hu矛)閬囧埌鍟�(w猫n)椤�锛岃€屼笖瑾�(r猫n)璀夐亷(gu貌)绋嬩腑閭勬湁鍙兘鍙楀埌鏀绘搳銆�
4.3銆佽垏鏅�(sh铆)闁撴湁闂�(gu膩n)鐨勬噳(y墨ng)鐢ㄧ郴绲�(t菕ng)锛氬毚(y谩n)鏍艰姹傝閷勬暩(sh霉)鎿�(j霉)鎻愪氦鏅�(sh铆)鍒荤殑缍�(w菐ng)绲�(lu貌)鎳�(y墨ng)鐢ㄧ郴绲�(t菕ng)锛屽繀闋堜繚璀夋彁浜ゆ檪(sh铆)闁撶殑婧�(zh菙n)纰烘€у拰涓嶅彲鏇存敼鎬�銆傚彟澶�锛屽皪(du矛)瀹㈡埗(h霉)绔€�(j矛n)琛岄檺鏅�(sh铆)鎿嶄綔鐨勬噳(y墨ng)鐢ㄧ郴绲�(t菕ng)涔熻姹傛檪(sh铆)闁撳悓姝�銆�
4.4銆佹牎鍦掔恫(w菐ng)鍌欎唤绯荤当(t菕ng)锛氬湪鍌欎唤鏈嶅嫏(w霉)鍣ㄥ拰瀹㈡埗(h霉)姗�(j墨)涔嬮枔閫�(j矛n)琛屽閲忓倷浠借姹傞€欏叐鍊�(g猫)绯荤当(t菕ng)涔嬮枔鐨勬檪(sh铆)闁撳悓姝�銆�
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