OSI妯″瀷鐨勫垎灞ゅ師鍓囬珨鐝�(xi脿n)浜嗏�滆В鑰﹀悎鈥濓紙decoupling锛夋�濇兂锛屽嵆灏囧京(f霉)闆滅殑閫氫俊閬�(gu貌)绋嬪妰鍒嗙偤鐢卞�氬��(g猫)绨�(ji菐n)鍠�鐨勩�佹竻鏅版槑纰虹殑鎶借薄灞ゆ�′��(l谩i)瀹屾垚銆傞�欑ó鍒嗗堡鐨勬柟寮忔湁鍔╀簬缍�(w菐ng)绲�(lu貌)鎶�琛�(sh霉)鐨勭櫦(f膩)灞�銆佸劒(y艒u)鍖栧拰绠＄悊锛屽悓鏅�(sh铆)涔熸柟渚夸簡缍�(w菐ng)绲�(lu貌)瑷�(sh猫)鍌欑殑浜掓彌鍜屽崌绱�(j铆)銆�

OSI妯″瀷鐨勪竷灞ゅ寘鎷�锛氱墿鐞嗗��銆佹暩(sh霉)鎿�(j霉)閺堣矾灞ゃ�佺恫(w菐ng)绲�(lu貌)灞�銆佸偝杓稿堡銆佹渻(hu矛)瑭�(hu脿)灞�銆佽〃绀哄堡鍜屾噳(y墨ng)鐢ㄥ堡銆�

1) 鐗╃悊灞わ紙Physical Layer锛夛細瀵�(sh铆)鐝�(xi脿n)閫氫俊瑷�(sh猫)鍌欎箣闁撴瘮鐗规祦鐨勫偝杓�锛屼富瑕佹秹鍙婄墿鐞嗕粙璩�(zh矛)銆侀浕姘ｇ壒鎬у拰姗�(j墨)姊扮壒鎬х瓑銆�

2) 鏁�(sh霉)鎿�(j霉)閺堣矾灞わ紙Data Link Layer锛夛細灏囧師濮嬬殑鏁�(sh霉)鎿�(j霉)浣嶆祦绲勬垚鍏锋湁鎰忕京鐨勫箑锛團rame锛�锛屽苟閫�(j矛n)琛屽偝杓告帶鍒跺拰閷�(cu貌)瑾ゆ�㈡��(c猫)绛夊姛鑳姐��

3) 缍�(w菐ng)绲�(lu貌)灞わ紙Network Layer锛夛細璨�(f霉)璨�(z茅)灏�(du矛)鏁�(sh霉)鎿�(j霉)閫�(j矛n)琛屽垎绲�銆佽矾鐢遍伕鎿囩瓑绠＄悊锛屽��(sh铆)鐝�(xi脿n)涓嶅悓缍�(w菐ng)绲�(lu貌)涔嬮枔鐨勯�氫俊浜掕伅(li谩n)銆�

4) 鍌宠几灞わ紙Transport Layer锛夛細鍦ㄧ��鍒扮��鐨勬暩(sh霉)鎿�(j霉)鍌宠几閬�(gu貌)绋嬩腑锛岃矤(f霉)璨�(z茅)鎻愪緵鍙�闈犵殑鏁�(sh霉)鎿�(j霉)鍌宠几鏈嶅嫏(w霉)銆佹祦閲忔帶鍒躲�佸樊閷�(cu貌)鎭㈠京(f霉)绛夋��(j墨)鍒�锛屽悓鏅�(sh铆)涔熺偤鎳�(y墨ng)鐢ㄧ▼搴忔彁渚涢�忔槑鐨勬暩(sh霉)鎿�(j霉)鍌宠几鎺ュ彛銆�

5) 鏈�(hu矛)瑭�(hu脿)灞わ紙Session Layer锛夛細璨�(f霉)璨�(z茅)寤虹珛銆佺董璀�(h霉)鍜岀祼(ji茅)鏉熷叐鍊�(g猫)閫�(j矛n)绋嬩箣闁撶殑閫氫俊鏈�(hu矛)瑭�(hu脿)銆�

6) 琛ㄧず灞わ紙Presentation Layer锛夛細瀹屾垚鏁�(sh霉)鎿�(j霉)鏍煎紡銆佺法纰�銆佽В纰�銆佹暩(sh霉)鎿�(j霉)鍔犲瘑锛屼互鍙婃暩(sh霉)鎿�(j霉)澹撶府绛夎檿鐞嗗伐浣溿��

7) 鎳�(y墨ng)鐢ㄥ堡锛圓pplication Layer锛夛細鍒╃敤鍚勭ó鎳�(y墨ng)鐢ㄥ崝(xi茅)璀版彁渚涚壒瀹氱殑鐢ㄦ埗(h霉)鏈嶅嫏(w霉)锛屼緥濡傞浕瀛愰兊浠躲�佹枃浠跺偝杓�銆侀仩(yu菐n)绋嬬櫥閷勭瓑銆�

OSI妯″瀷鍏锋湁浠ヤ笅鐨勪綔鐢�锛�

1) 鎻愪緵浜嗕竴鍊�(g猫)娓呮櫚鐨勫弮鑰冩灦妲�(g貌u)锛屼娇寰楄▓(j矛)绠楁��(j墨)缍�(w菐ng)绲�(lu貌)鎶�琛�(sh霉)寰楀埌鏇村ソ鐨勭櫦(f膩)灞曞拰绠＄悊銆�

2) 灏�(du矛)浜庣恫(w菐ng)绲�(lu貌)瑷�(sh猫)鍌欑殑瑷�(sh猫)瑷�(j矛)鍜屽崝(xi茅)璀扮殑鍒跺畾鎻愪緵浜嗘��(bi膩o)婧�(zh菙n)鍜岃��(gu墨)鑼冿紝浣垮緱涓嶅悓瑷�(sh猫)鍌欐垨鑰呬笉鍚屽粻鍟嗕箣闁撶殑浜掕伅(li谩n)鍜屾暩(sh霉)鎿�(j霉)浜ゆ彌璁婂緱鏇寸偤瀹规槗銆侀珮鏁堝拰瀹夊叏銆�

3) 鐐轰笉鏂风櫦(f膩)灞曞拰鏇存柊鐨勮▓(j矛)绠楁��(j墨)缍�(w菐ng)绲�(lu貌)鎶�琛�(sh霉)鎻愪緵浜嗕竴鍊�(g猫)闁�(k膩i)鏀俱�佹ā濉婂寲骞跺叿鏈夊彲鎿�(ku貌)灞曟�х殑鍙冭�冩灦妲�(g貌u)銆�