{"id":1628,"date":"2017-02-07T01:34:47","date_gmt":"2017-02-07T01:34:47","guid":{"rendered":"http:\/\/woori4.com\/wordpress\/?p=1628"},"modified":"2017-02-07T01:34:47","modified_gmt":"2017-02-07T01:34:47","slug":"%eb%84%a4%ed%8a%b8%ec%9b%8c%ed%81%acnetwork-%ec%8a%a4%ec%9c%84%ec%b9%98-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/woori4.com\/?p=1628","title":{"rendered":"\ub124\ud2b8\uc6cc\ud06c(Network) \uc2a4\uc704\uce58 \uc815\ub9ac"},"content":{"rendered":"

\ucd9c\ucc98: \ub124\ud2b8\uc6cc\ud06c \uc804\ubb38\uac00 \ub530\ub77c\uc7a1\uae30<\/span><\/p>\n

O L2,L3,L4 \uc2a4\uc704\uce58 \uc7a5\ube44\ub294 \ubaa8\ub450 \uc790\uccb4\uc801\uc73c\ub85c IP Address\ub97c \uac00\uc9c0\uace0 \uc788\ub294\uac00.<\/span>
– \ubaa8\ub450 IP Address \ub97c \uaf2d \uac00\uc9c0\uace0 \uc788\uc9c0\ub294 \uc54a\uc9c0\ub9cc, \uac00\uc9c8\uc218\ub294 \uc788\ub2e4.<\/span>
– \uc6b0\uc120 L2\uc2a4\uc704\uce58\uac00 Dummy\uc640 Intelligent \uc7a5\ube44\ub85c \uad6c\ubd84\ub418\ub294 \ub370, Intelligent \uc7a5\ube44\ub294 IP\ub97c \uc124\uc815\ud560 \uc218 \uc788\ub2e4.<\/span>
– L3 \uc2a4\uc704\uce58\ub294 \uc790\uc2e0\uc758 IP\ub97c \uc0c1\ub2f9\ud788 \ub9ce\uc774 \uac16\uc744\uc218 \uc788\uace0 Routing\uc744 \ud558\uae30 \ub54c\ubb38\uc5d0 \uc0dd\uac01\ud560 \uc218 \uc788\ub294 \ub9cc\ud07c\uc744 \ub2e4 \uac00\uc9c8\uc218 \uc788\ub2e4. \ud558\uc9c0\ub9cc, Routing\uc744 \ub9ce\uc774\ud558\uba74 \ucc98\ub9ac \uc18d\ub3c4\uac00 \ub290\ub824\uc9c0\ubbc0\ub85c \uc7a5\ube44\uc758 \uc131\ub2a5\uc744 \ubcf4\uace0\uc11c Rounting \uc22b\uc790\ub97c \uc815\ud558\uc5ec\uc57c\ud55c\ub2e4.<\/span>
– L4 \uc2a4\uc704\uce58\ub294 \uc6b0\uc120 \uc790\uc2e0\uc758 IP\ub97c \uac00\uc9c0\uace0 \uc788\ub2e4. L4 \uc2a4\uc704\uce58\uac00 L3\uae30\ub2a5\uc744 \uaf2d \uac00\uc9c0\uace0 \uc788\ub294 \uacbd\uc6b0\ub294 \uc5c6\uae30 \ub54c\ubb38\uc5d0 Rounting\uc774 \ub420\uc218\ub3c4 \uc788\uace0 \uc548\ub420\uc218 \ub3c4 \uc788\ub2e4. \ub124\ud2b8\uc6cc\ud06c \uc7a5\ube44\ub294 IP Address\ub97c \uac00\uc9c0\uace0 \uc788\ub294\ub370, \ubcf4\ud1b5 \uc6a9\ub3c4\uac00 \uc124\uc815\uc774\ub098 \uad00\ub9ac\uc6a9\uc774\ub2e4.<\/span>
\u00a0<\/span>
O L2\uc2a4\uc704\uce58\uc640 L3\uc2a4\uc704\uce58\uc758 \ucc28\uc774\uc810<\/span>
– \ub124\ud2b8\uc6cc\ud06c \uad6c\uc131\uc5d0\uc11c L2 switch\ub97c \uc4f0\ub294 \uacf3\uc774 \uc788\ub294 \ubc18\uba74\uc5d0 L2\ub294 \uc0ac\uc6a9\uc744 \ud558\uc9c0 \ubabb \ud558\uace0 L3\ub97c \uc4f0\ub294 \uacf3\uc774 \uc788\ub2e4. \uc774 \ub450\uacc4\uce35 switch\uc758 \ucc28\uc774\uc810\u00a0<\/span><\/span>
– \uc6b0\uc120 HUB\ub294 \ub354\ubbf8 \ud5c8\ube0c\uc640 \uc2a4\uc704\uce58 \ud5c8\ube0c\uac00 \uc788\ub2e4. ( \ub300\ubd80\ubd84\uc774 L2\uae09 \uc7a5\ube44 )<\/span>
– \ub354\ubbf8\ub294 \uadf8\ub0e5 \uba4d\ud145\uad6c\ub9ac \ub77c\uace0\ub3c4 \ubd88\ub9ac\uc8e0. \ubc18\uba74\uc5d0 \uc2a4\uc704\uce58\ub294 \ubd88\ud544\uc694\ud55c \ube0c\ub85c\ub4dc \uce90\uc2a4\ud305\uc744 \ub9c9\uace0 \uac01\uc2a4\uc704\uce58 \ud3ec\ud2b8\uc758 \uc18d\ub3c4\ub97c \ubcf4\uc7a5\ud574 \uc900\ub2e4. \uadf8\ub7ec\ub2c8\uae4c \ub354\ubbf8\uac00 10Mbps\uac70\ub098 100Mbps\uc774\uba74 \ub354\ubbf8 \ud5c8\ube0c \ud3ec\ud2b8\uc5d0 \ubb3c\ub824\uc788\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\ub4e4\uc774 \uc18d\ub3c4\ub97c \ub098\ub204\uc5b4\uc11c \uc0ac\uc6a9\ud55c\ub2e4. \uadfc\ub370 \uc2a4\uc704\uce58 \ud5c8\ube0c\ub294 10Mbps \uac70\ub098 100Mbps \uc774\uba74 \uac01\ud3ec\ud2b8\ub9c8\ub2e4 \uc18d\ub3c4\ub97c \ubcf4\uc7a5\uc744 \ubc1b\uc744 \uc218\uc788\ub2e4. \uc5ec\uae30 \uae4c\uc9c0\ub294 \uadf8\ub0e5 \ubcf4\ud1b5 \ud5c8\ube0c\u00a0<\/span><\/span>

– L3 \uc2a4\uc704\uce58\ub294 \uac00\uc7a5 \uc911\uc694\ud55c \uae30\ub2a5\uc740 \ubc14\ub85c \ub77c\uc6b0\ud305\u00a0 \uc774 \ub77c\uc6b0\ud305 \uae30\ub2a5\uc740 \ubcf4\ud1b5 \ub77c\uc6b0\ud130\uc5d0\uc11c \ud558\uac8c \ub41c\ub2e4. \ub77c\uc6b0\ud305\uc740 \uc11c\ub85c \ub2e4\ub978 \ub124\ud2b8\uc6cc\ud06c\uac04\uc5d0 \uc5f0\uacb0\uc744 \ud560\uc218 \uc788\ub294\uac83\uc744 \ub9d0\ud558\ub294\ub370.. \ub9cc\uc57d\uc5d0 \uc5b4\ub290 \ud68c\uc0ac\uc5d0\uc11c IP address\ub97c C class\ub97c 3\uac8c\ub97c \ubc1b\uc544\uc11c \uc0ac\uc6a9\ud558\uac8c\ub418\uba74 192.168.1.0 255.255.255.0 \uacfc 192.168.10.0 255.255.255.0 \uacfc 192.168.100.0 255.255.255.0 \uc774\ub807\uac8c IP\ub97c \ubc1b\uc558\uc744\ub54c \ub124\ud2b8\uc6cc\ud06c\uac00 \uc11c\ub85c \ub2e4\ub974\uae30 \ub54c\ubb38\uc5d0 \uc11c\ub85c \ud1b5\uc2e0\uc774 \ub418\uc9c0 \uc54a\ub294\ub2e4. \uc774\ub7f4\ub54c L3\uae09 \uc2a4\uc704\uce58\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac19\uc740 \ub124\ud2b8\uc6cc\ud06c\ub85c \ubb36\uc744 \uc218\uac00 \uc788\ub2e4. L2\uae09\uc5d0\uc11c\ub294 \ub124\ud2b8\uc6cc\ud06c\uac00 \ub2e4\ub974\uae30\ub54c\ubb38\uc5d0 192.168.1.0 \ub300\uc5d0\uc11c \ub2e4\ub978 \ub124\ud2b8\uc6cc\ud06c \ubcf4\uc774\uc9c0 \uc54a\ub294\ub2e4. \uadf8\ub7ec\ub098 L3\uae09\uc77c\ub54c\ub294 \uc138\uac1c\uc758 \ud074\ub77c\uc2a4\ub97c \uac19\uc740 \ub124\ud2b8\uc6cc\ud06c\ub85c \uc0ac\uc6a9\ud558\uc5ec \uc11c\ub85c\uac19\uc5d0 \ud1b5\uc2e0\uc774 \uac00\ub2a5\ud558\ub2e4.<\/span>
\u00a0<\/span>
– L3 \uc2a4\uc704\uce58\uac00 \ub098\uc628\uac83\uc740 \uadf8\ub807\uac8c \uc624\ub798\ub418\uc9c0 \uc54a\uc558\ub2e4. \uc2a4\uc704\uce58\ub294 Layer2\uc5d0\uc11c \ub3d9\uc791\ud558\ub294 \uc7a5\ube44\uc774\ub2e4. \uc5ec\uae30\uc11c Layer2\ub77c\uace0 \ud558\uba74 TCP\/IP protocol stack\uc5d0\uc11c MAC layer\ub97c \uc758\ubbf8\ud558\uace0 \ub77c\uc6b0\ud130\ub294 Layer3\uc5d0\uc11c \ub3d9\uc791\ud55c\ub2e4, \ub2f9\uc5f0\ud788 Layer3 \uc989 IP Later\uc5d0\uc11c \ub3d9\uc791\ud55c\ub2e4.<\/span>
– \uadf8\ub7f0\ub370 \uc608\uc804\uc5d0 \uc774 \uc2a4\uc704\uce58\uc640 \ub77c\uc6b0\ud130\uc758 \ub3d9\uc791\ubc29\uc2dd\uc5d0 \uacb0\uc815\uc801\uc774 \ucc28\uc774\uac00 \ud558\ub098 \uc788\uc5c8\ub2e4. \uc774\uac83\uc740 \uc2a4\uc704\uce58\ub294 \uc880 \ub2e8\uc21c\ud558\uac8c \ud558\ub4dc\uc6e8\uc5b4\uc801\uc73c\ub85c MAC address\ub97c \ubcf4\uace0 \ub4e4\uc5b4\uc624\ub294 \ub370\uc774\ud0c0\ub97c \uc804\ub2ec (\uc2a4\uc704\uce6d, switching) \ud558\ub294 \uc7a5\ube44\uc774\uad6c \ub77c\uc6b0\ud130\ub294 \uc880\ub354 \ub611\ub611\ud558\uac8c \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc801\uc73c\ub85c IP Layer\ub97c \ubcf4\uace0 \ub4e4\uc5b4\uc624\ub294 \ub370\uc774\ud0c0\uc758 \uacbd\ub85c\ub97c (\uacbd\ub85c, Path, Route) \uacb0\uc815\ud558\ub294 \ub3d9\uc791\uc744 \ud558\uac8c \ub41c\ub2e4. \uc65c\ub0d0\ud558\uba74 IP Layer\uac00 Mac\ubcf4\ub2e4 \ud6e8\uc52c \ubcf5\uc7a1\ud558\uae30 \ub54c\ubb38\uc5d0 \ud558\ub4dc\uc6e8\uc5b4\ub85c \ucc98\ub9ac\ud558\ub294\uac8c \ubb34\ucc99 \uc5ec\ub824\uc6cc\uc11c<\/span>

\uc2a4\uc704\uce58 : L2, MAC address, Hardware\ub3d9\uc791<\/span>
\ub77c\uc6b0\ud130 : L3, IP address, Software\ub3d9\uc791<\/span>

O L2\uc2a4\uc704\uce58\uc640 \uadf8\ub0e5 \uc2a4\uc704\uce58, L3\uc2a4\uc704\uce58\uc640 \ub77c\uc6b0\ud130\uc758 \ucc28\uc774\uc810 (FEP, QOS \u2026)\u00a0<\/span><\/span>
\u00a0–\u00a0 L2 \uc2a4\uc704\uce58\ub97c \uadf8\ub0e5 \uc2a4\uc704\uce58\ub77c\uace0 \ubd80\ub974\uae30\ub3c4 \ud55c\ub2e4.<\/span>
\u00a0–\u00a0 L3 \uc2a4\uc704\uce58\ub294 HUB+ROUTER\uc758 \uc5ed\ud65c\uc744 \uc218\ud589\ud558\ub294 \uc7a5\ube44…\uc989 \uc2a4\uc704\uce6d\ud5c8\ube0c\uc5d0 \ub77c\uc6b0\ud305\uae30\ub2a5\uc744 \ucca8\uac00\ud55c \uc7a5\ube44\ub77c\uace0 \ubcf4\uba74 \ub428.<\/span>
\u00a0–\u00a0 L4 \uc2a4\uc704\uce58\ub294 \uc11c\ubc84\ub098 \ub124\ud2b8\uc6cd\uc758 \ud2b8\ub798\ud53d\uc744 \ub85c\ub4dc\ubc1c\ub780\uc2f1..\uc989 \uade0\ub4f1\ud558\uac8c \ubd84\ubc30\ud558\uc5ec \uc8fc\ub294 \uc2a4\uc704\uce58\uc774\ub2e4.\u00a0<\/span><\/span>
\u00a0–\u00a0 FEP(front-end processor)\ub294 \ub124\ud2b8\uc6cc\ud06c\ub85c \uc5f0\uacb0\ub41c \uc7a5\uce58\uc5d0 \ub124\ud2b8\uc6cc\ud06c \uc778\ud130\ud398\uc774\uc2a4 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\ub294 \uc7a5\uce58\ub098 \ubcf4\ub4dc\ub97c \ub9d0\ud55c\ub2e4. PC\ub098 \uc11c\ubc84\uc758 \ubd80\ud558\ub97c \uc904\uc774\uae30 \uc704\ud574 \uc0ac\uc6a9\ub418\ub294 \ub124\ud2b8\uc6cc\ud06c\uc6a9 \ud504\ub85c\uc138\uc11c\ub77c\uace0 \ubcf4\uba74 \ub428.\u00a0<\/span><\/span><\nbr style=\"text-align: left; color: #1f1f1f; text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: '\ub9d1\uc740 \uace0\ub515', 'malgun gothic', \ub3cb\uc6c0, dotum, AppleGothic, sans-serif; font-size: 13px; font-style: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: #ffffff; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;\" \/>\u00a0–\u00a0 QOS\ub294 Quality of Service(\uc11c\ube44\uc2a4 \ud488\uc9c8)\uc744 \uc560\uae30\ud558\ub294\ub370…\uac04\ub7b5\ud788 \uc598\uae30\ud574 \ub124\ud2b8\uc6cc\ud06c\uc758 \ud488\uc9c8\uc744 \uad00\ub9ac\ud558\uae30 \uc704\ud55c \ucc99\ub3c4\ub85c \ud65c\uc6a9\ub418\uac70\ub098 \ub4f1\uae09\uc744 \uc8fc\uae30\uc704\ud558\uc5ec \uc788\ub2e4\uace0 \ubcf4\uba74 \ub428.<\/span>

\ucd9c\ucc98: \ub124\ud2b8\uc6cc\ud06c \uc804\ubb38\uac00 \ub530\ub77c\uc7a1\uae30<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\ucd9c\ucc98: \ub124\ud2b8\uc6cc\ud06c \uc804\ubb38\uac00 \ub530\ub77c\uc7a1\uae30 O L2,L3,L4 \uc2a4\uc704\uce58 \uc7a5\ube44\ub294 \ubaa8\ub450 \uc790\uccb4\uc801\uc73c\ub85c IP Address\ub97c \uac00\uc9c0\uace0 \uc788\ub294\uac00.– \ubaa8\ub450 IP Address \ub97c \uaf2d \uac00\uc9c0\uace0 \uc788\uc9c0\ub294 \uc54a\uc9c0\ub9cc, \uac00\uc9c8\uc218\ub294 \uc788\ub2e4.– \uc6b0\uc120 L2\uc2a4\uc704\uce58\uac00 Dummy\uc640 Intelligent \uc7a5\ube44\ub85c \uad6c\ubd84\ub418\ub294 \ub370, Intelligent \uc7a5\ube44\ub294 IP\ub97c...<\/p>\n","protected":false},"author":2,"featured_media":1630,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[33,38,55],"class_list":["post-1628","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nas","tag-map","tag-network","tag-switch"],"_links":{"self":[{"href":"https:\/\/woori4.com\/index.php?rest_route=\/wp\/v2\/posts\/1628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/woori4.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/woori4.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/woori4.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/woori4.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1628"}],"version-history":[{"count":0,"href":"https:\/\/woori4.com\/index.php?rest_route=\/wp\/v2\/posts\/1628\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/woori4.com\/index.php?rest_route=\/wp\/v2\/media\/1630"}],"wp:attachment":[{"href":"https:\/\/woori4.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/woori4.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/woori4.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}