Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Modem v\u00e0 router l\u00e0 2 thi\u1ebft b\u1ecb h\u1eefu \u00edch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i c\u00e1c g\u00f3i d\u1eef li\u1ec7u gi\u00fap c\u00e1c thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i d\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i v\u1edbi wifi. M\u1eb7c d\u00f9 v\u1eady, v\u1eabn c\u00f3 kh\u00e1 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng nh\u1ea7m l\u1eabn 2 thi\u1ebft b\u1ecb n\u00e0y l\u00e0 m\u1ed9t v\u00e0 nh\u1ea7m l\u1eabn v\u1ec1 vai tr\u00f2 c\u1ee7a ch\u00fang. V\u1eady n\u00ean trong b\u00e0i vi\u1ebft n\u00e0y Vietlearn.org s\u1ebd gi\u00fap b\u1ea1n tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi modem l\u00e0 g\u00ec? router l\u00e0 g\u00ec? t\u00edn hi\u1ec7u s\u1ed1 l\u00e0 g\u00ec? s\u1ef1 kh\u00e1c nhau gi\u1eefa router v\u00e0 modem,\u2026d\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00f4ng tin chi ti\u1ebft.<\/p>\n\n\n\n
Router l\u00e0 g\u00ec ? Ch\u1ee9c n\u0103ng c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn kh\u00f4ng d\u00e2y<\/p>\n\n\n\n
Router l\u00e0 g\u00ec ?<\/p>\n\n\n\n
B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn l\u00e0 g\u00ec? Router l\u00e0 g\u00ec ? B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn wifi l\u00e0 g\u00ec? l\u00e0 c\u00e2u h\u1ecfi m\u00e0 ch\u00fang t\u00f4i nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u trong th\u1eddi gian qua, th\u1ef1c ch\u1ea5t 3 c\u00e2u h\u1ecfi n\u00e0y \u0111\u1ec1u l\u00e0 m\u1ed9t. Router c\u00f2n c\u00f3 t\u00ean g\u1ecdi kh\u00e1c l\u00e0 thi\u1ebft b\u1ecb \u0111\u1ecbnh tuy\u1ebfn hay b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn. \u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng m\u00e1y t\u00ednh d\u00f9ng \u0111\u1ec3 chuy\u1ec3n c\u00e1c g\u00f3i d\u1eef li\u1ec7u qua m\u1ed9t m\u1ea1ng li\u00ean k\u1ebft \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i th\u00f4ng qua m\u1ed9t bi\u1ebfn tr\u00ecnh g\u1ecdi l\u00e0 \u0111\u1ecbnh tuy\u1ebfn. N\u00f3i c\u00e1ch kh\u00e1c, router l\u00e0 thi\u1ebft b\u1ecb d\u00f9ng \u0111\u1ec3 chia s\u1ebb internet t\u1edbi c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c trong c\u00f9ng l\u1edbp m\u1ea1ng.<\/p>\n\n\n\n
Thi\u1ebft b\u1ecb router c\u00f3 kh\u00e1 nhi\u1ec1u c\u1ed5ng ethernet cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb kh\u00e1c th\u00f4ng qua c\u00e1p n\u1ed1i c\u00f3 th\u1ec3 l\u00e0 m\u1ea1ng kh\u00f4ng d\u00e2y ho\u1eb7c h\u1eefu tuy\u1ebfn.<\/p>\n\n\n\n
Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a router l\u00e0 g\u00ec?<\/p>\n\n\n\n
B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn kh\u00f4ng d\u00e2y router th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng g\u1eedi c\u00e1c g\u00f3i d\u1eef li\u1ec7u m\u1ea1ng gi\u1eefa 2 ho\u1eb7c nhi\u1ec1u m\u1ea1ng, t\u1eeb m\u1ed9t t\u1edbi nhi\u1ec1u \u0111i\u1ec3m \u0111\u00edch c\u1ee7a router. N\u00f3i \u0111\u01a1n gi\u1ea3n h\u01a1n th\u00ec router v\u1eeba c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi wifi v\u1edbi \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh b\u1ea3ng v\u1eeba c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i m\u1ea1ng c\u00f3 d\u00e2y v\u1edbi m\u00e1y t\u00ednh b\u00e0n, laptop hay tivi.<\/p>\n\n\n\n
B\u00ean c\u1ea1nh \u0111\u00f3, thi\u1ebft b\u1ecb c\u00f2n cho ph\u00e9p b\u1ea1n bi\u1ebfn m\u00e1y in th\u01b0\u1eddng th\u00e0nh m\u00e1y in wifi th\u00f4ng qua thi\u1ebft b\u1ecb router wireless c\u00f3 h\u1ed7 tr\u1ee3 c\u1ed5ng USB. B\u1ea1n ch\u1ec9 c\u1ea7n g\u1eafn d\u00e2y t\u00edn hi\u1ec7u c\u1ee7a m\u00e1y in v\u00e0o c\u1ed5ng USB c\u1ee7a router v\u00e0 th\u1ef1c hi\u1ec7n c\u00e0i \u0111\u1eb7t nh\u01b0 m\u1ed9t m\u00e1y in m\u1ea1ng m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i mua m\u1edbi m\u1ed9t chi\u1ebfc m\u00e1y in kh\u00e1c h\u1ed7 tr\u1ee3 m\u1ea1ng kh\u00f4ng d\u00e2y.<\/p>\n\n\n\n
IP c\u1ee7a c\u00e1c m\u00e1y trong c\u00f9ng m\u1ea1ng LAN s\u1ebd kh\u00e1c nhau nh\u01b0ng khi tham gia v\u00e0o m\u1ea1ng internet b\u1ea1n ch\u1ec9 c\u00f3 1 \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 IP Public.<\/p>\n\n\n\n
Modem wifi l\u00e0 g\u00ec? Ch\u1ee9c n\u0103ng c\u1ee7a modem<\/p>\n\n\n\n
Modem l\u00e0 g\u00ec?<\/p>\n\n\n\n
Modem l\u00e0 t\u00ean vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb \u201cmodulator and demodulator\u201d \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 thi\u1ebft b\u1ecb b\u1ecb m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 c\u00e1c xung \u0111i\u1ec7n. C\u1ee5c modem l\u00e0 thi\u1ebft b\u1ecb giao ti\u1ebfp v\u1edbi m\u1ea1ng l\u01b0\u1edbi c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ea1ng internet th\u00f4ng qua h\u1ec7 th\u1ed1ng c\u00e1p n\u1ed1i \u0111\u1ed3ng tr\u1ee5c, c\u00e1p quang hay qua c\u00e1c \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n tho\u1ea1i; gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i v\u1edbi internet qu\u1ed1c t\u1ebf.<\/p>\n\n\n\n
H\u1ea7u h\u1ebft c\u00e1c modem \u0111\u1ed9c l\u1eadp ch\u1ec9 c\u00f3 2 c\u1ed5ng, m\u1ed9t c\u1ed5ng s\u1ebd k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng internet t\u1eeb ISP v\u00e0 1 Ethernet \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi m\u00e1y t\u00ednh ho\u1eb7c router. Modem th\u01b0\u1eddng k\u1ebft n\u1ed1i \u0111\u1ebfn c\u1ed5ng WAN c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u00f2n c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c s\u1ebd k\u1ebft n\u1ed1i v\u1edbi nh\u1eefng c\u1ed5ng c\u00f2n l\u1ea1i tr\u00ean router ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y th\u00f4ng qua chu\u1ea9n wifi.<\/p>\n\n\n\n
Ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c modem<\/p>\n\n\n\n
Tr\u00ean th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay c\u00f3 r\u1ea5t nhi\u1ec1u lo\u1ea1i modem wifi kh\u00e1c nhau nh\u01b0ng c\u00e1c lo\u1ea1i modem n\u00e0y \u0111\u1ec1u th\u1ef1c hi\u1ec7n chung m\u1ed9t ch\u1ee9c n\u0103ng \u0111\u00f3 l\u00e0 chuy\u1ec3n h\u00f3a c\u00e1c g\u00f3i d\u1eef li\u1ec7u do ISP cung c\u1ea5p th\u00e0nh k\u1ebft n\u1ed1i internet cho router hay c\u00e1c thi\u1ebft b\u1ecb c\u00f3 li\u00ean k\u1ebft m\u1ea1ng th\u00f4ng qua \u0111\u1ecba ch\u1ec9 IP.<\/p>\n\n\n\n
H\u01b0\u1edbng d\u1eabn ph\u00e2n bi\u1ec7t router v\u00e0 modem<\/p>\n\n\n\n
S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa 2 thi\u1ebft b\u1ecb router v\u00e0 modem \u0111\u00f3 l\u00e0 modem cho ph\u00e9p b\u1ea1n k\u1ebft n\u1ed1i v\u1edbi internet trong khi \u0111\u00f3 router ph\u00e2n ph\u1ed1i c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ebfn nhi\u1ec1u thi\u1ebft b\u1ecb kh\u00e1c nhau. Modem l\u00e0 c\u1ed5ng v\u00e0o web c\u1ee7a b\u1ea1n trong khi router l\u00e0 trung t\u00e2m c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb.<\/p>\n\n\n\n
Router s\u1ebd c\u00f3 1 ho\u1eb7c nhi\u1ec1u c\u1ed5ng LAN, c\u1ed5ng m\u1ea1ng WAN, angten ph\u00e1t s\u00f3ng wifi b\u00ean c\u1ea1nh \u0111\u00f3 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn kh\u00f4ng d\u00e2y c\u00f2n c\u00f3 th\u00eam c\u1ed5ng USB \u0111\u1ec3 chia s\u1ebb d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn.<\/p>\n\n\n\n
\u0110a s\u1ed1 c\u00e1c c\u1ee5c modem \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p th\u00eam t\u00ednh n\u0103ng ph\u00e1t wifi gi\u00fap ng\u01b0\u1eddi d\u00f9ng ti\u1ec7n l\u1ee3i h\u01a1n trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng c\u0169ng nh\u01b0 ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u00e1ng k\u1ec3 thay v\u00ec ph\u1ea3i mua th\u00eam thi\u1ebft b\u1ecb router wifi. Th\u00f4ng th\u01b0\u1eddng b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c model t\u1eeb nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ea1ng internet khi \u0111\u0103ng k\u00fd s\u1eed d\u1ee5ng g\u00f3i internet.<\/p>\n\n\n\n
B\u00ean c\u1ea1nh \u0111\u00f3, c\u00f2n c\u00f3 m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb kh\u00e1c \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi l\u1ef1a ch\u1ecdn \u0111\u00f3 l\u00e0 Router modem v\u00e0 Access point<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 \u0111\u01a1n v\u1ecb cung c\u1ea5p d\u1ecbch v\u1ee5 ISP c\u00f3 cung c\u1ea5p lo\u1ea1i thi\u1ebft b\u1ecb 2 trong 1 Router modem k\u1ebft h\u1ee3p gi\u1eefa router v\u00e0 modem. Thi\u1ebft b\u1ecb 2 trong 1 n\u00e0y th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 th\u00e0nh s\u1ed1 v\u00e0 \u0111\u1ecbnh tuy\u1ebfn n\u1ed9i m\u1ea1ng. Router modem kh\u00f4ng y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i s\u1eed d\u1ee5ng nhi\u1ec1u d\u00e2y ho\u1eb7c c\u00e1p \u0111\u1ec3 thi\u1ebft l\u1eadp.<\/p>\n\n\n\n
Thi\u1ebft b\u1ecb Access point ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung t\u00e2m t\u00edn hi\u1ec7u gi\u00fap nh\u1eadn v\u00e0 ph\u00e1t s\u00f3ng m\u1ea1ng kh\u00f4ng d\u00e2y WLAN. Access point th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng k\u1ebft n\u1ed1i t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y v\u1edbi m\u1ea1ng c\u1ee5c b\u1ed9 s\u1eed d\u1ee5ng d\u00e2y. \u0110\u1eb7c bi\u1ec7t, ch\u00fang kh\u00f4ng c\u1ea5p ph\u00e1t \u0111\u1ecba ch\u1ec9 IP nh\u01b0 modem m\u00e0 ch\u1ec9 k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng d\u00e2y v\u00e0 wifi. N\u1ebfu nh\u01b0 b\u1ea1n ch\u1ec9 c\u1ea7n k\u1ebft n\u1ed1i m\u1ed9t m\u00e1y t\u00ednh v\u1edbi internet th\u00ec b\u1ea1n n\u00ean s\u1eed d\u1ee5ng modem b\u1eb1ng c\u00e1p. Trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n mu\u1ed1n k\u1ebft n\u1ed1i v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb kh\u00f4ng d\u00e2y th\u00ec b\u1ea1n n\u00ean s\u1eed d\u1ee5ng router.<\/p>\n\n\n\n
Hy v\u1ecdng v\u1edbi c\u00e1c th\u00f4ng tin tr\u00ean trong b\u00e0i vi\u1ebft modem, router l\u00e0 g\u00ec \u2013 Ph\u00e2n bi\u1ec7t ch\u1ee9c c\u1ee7a router v\u00e0 modem tr\u00ean \u0111\u00e2y s\u1ebd gi\u00fap \u00edch b\u1ea1n; t\u1eeb \u0111\u00f3 gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u s\u1eed d\u1ee5ng. N\u1ebfu c\u00f3 b\u1ea5t k\u1ef3 c\u00e2u h\u1ecfi n\u00e0o li\u00ean quan \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y, qu\u00fd kh\u00e1ch h\u00e0ng h\u00e3y comment ph\u00ed d\u01b0\u1edbi b\u00e0i vi\u1ebft ho\u1eb7c li\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi ch\u00fang t\u00f4i, t\u1ed5ng \u0111\u00e0i lu\u00f4n m\u1edf \u0111\u1ec3 h\u1ed7 tr\u1ee3 b\u1ea1n m\u1ecdi l\u00fac m\u1ecdi n\u01a1i.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Modem v\u00e0 router l\u00e0 2 thi\u1ebft b\u1ecb h\u1eefu \u00edch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i c\u00e1c g\u00f3i d\u1eef li\u1ec7u gi\u00fap c\u00e1c thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i d\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i v\u1edbi wifi. M\u1eb7c d\u00f9 v\u1eady, v\u1eabn c\u00f3 kh\u00e1 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng nh\u1ea7m l\u1eabn 2 thi\u1ebft b\u1ecb n\u00e0y l\u00e0 m\u1ed9t v\u00e0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[13],"tags":[],"class_list":["post-3366","post","type-post","status-publish","format-standard","hentry","category-tin-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=3366"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3366\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=3366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=3366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=3366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}