{"id":137,"date":"2025-12-21T17:55:56","date_gmt":"2025-12-21T14:55:56","guid":{"rendered":"https:\/\/blogs.e-me-4all.eu\/chisg\/?page_id=137"},"modified":"2025-12-21T17:55:56","modified_gmt":"2025-12-21T14:55:56","slug":"%ce%b4%ce%b9%ce%b5%cf%85%ce%b8%cf%8d%ce%bd%cf%83%ce%b5%ce%b9%cf%82-%ce%b5%ce%bb%ce%ad%ce%b3%cf%87%ce%bf%cf%85-%cf%80%cf%81%cf%8c%cf%83%ce%b2%ce%b1%cf%83%ce%b7%cf%82-%cf%83%cf%84%ce%bf-%ce%bc%ce%ad","status":"publish","type":"page","link":"https:\/\/blogs.e-me-4all.eu\/chisg\/%ce%b4%ce%b9%ce%b5%cf%85%ce%b8%cf%8d%ce%bd%cf%83%ce%b5%ce%b9%cf%82-%ce%b5%ce%bb%ce%ad%ce%b3%cf%87%ce%bf%cf%85-%cf%80%cf%81%cf%8c%cf%83%ce%b2%ce%b1%cf%83%ce%b7%cf%82-%cf%83%cf%84%ce%bf-%ce%bc%ce%ad\/","title":{"rendered":"\u0394\u03b9\u03b5\u03c5\u03b8\u03cd\u03bd\u03c3\u03b5\u03b9\u03c2 \u0395\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c0\u03c1\u03cc\u03c3\u03b2\u03b1\u03c3\u03b7\u03c2 \u03c3\u03c4\u03bf \u039c\u03ad\u03c3\u03bf (MAC)"},"content":{"rendered":"<h3 style=\"text-align: center\">\u0394\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u0395\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c0\u03c1\u03cc\u03c3\u03b2\u03b1\u03c3\u03b7\u03c2 \u03c3\u03c4\u03bf \u039c\u03ad\u03c3\u03bf (MAC)<\/h3>\n<p>\u039a\u03ac\u03b8\u03b5 \u03ba\u03cc\u03bc\u03b2\u03bf\u03c2 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03b4\u03af\u03ba\u03c4\u03c5\u03bf Ethernet \u03ad\u03c7\u03b5\u03b9 \u03bc\u03b9\u03b1 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ae \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03ae \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c5\u03bb\u03b9\u03ba\u03bf\u03cd (Hardware Address), \u03ce\u03c3\u03c4\u03b5 \u03bd\u03b1 \u03b1\u03bd\u03b1\u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03bc\u03bf\u03bd\u03b1\u03b4\u03b9\u03ba\u03ac \u03c3\u03b5 \u03cc\u03bb\u03bf \u03c4\u03bf \u03b4\u03af\u03ba\u03c4\u03c5\u03bf. \u0391\u03bd\u03b1\u03c6\u03ad\u03c1\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03c9\u03c2 <strong>\u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c0\u03c1\u03bf\u03c3\u03c0\u03ad\u03bb\u03b1\u03c3\u03b7\u03c2 \u03c3\u03c4\u03bf \u03bc\u03ad\u03c3\u03bf (MAC Address, Media Access Control).<\/strong><br \/>\n\u0395\u03af\u03bd\u03b1\u03b9 \u03ad\u03bd\u03b1\u03c2<strong> \u03b4\u03c5\u03b1\u03b4\u03b9\u03ba\u03cc\u03c2 \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03c4\u03c9\u03bd 48 bit<\/strong> (MAC-48, EUI-48) \u03ae <strong>\u03ad\u03be\u03b9 \u03bf\u03ba\u03c4\u03ac\u03b4\u03c9\u03bd<\/strong> \u03ba\u03b1\u03b9 \u03b3\u03c1\u03ac\u03c6\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf \u03b4\u03b5\u03ba\u03b1\u03b5\u03be\u03b1\u03b4\u03b9\u03ba\u03cc \u03b1\u03c1\u03b9\u03b8\u03bc\u03b7\u03c4\u03b9\u03ba\u03cc \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03c9\u03c2 \u03ad\u03be\u03b9 \u03b4\u03b9\u03c8\u03ae\u03c6\u03b9\u03bf\u03b9 \u03b4\u03b5\u03ba\u03b1\u03b5\u03be\u03b1\u03b4\u03b9\u03ba\u03bf\u03af \u03b1\u03c1\u03b9\u03b8\u03bc\u03bf\u03af \u03c7\u03c9\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf\u03b9 \u03bc\u03b5 \u03c0\u03b1\u03cd\u03bb\u03b5\u03c2 (\u03c3\u03c4\u03b1 windows) \u03ae \u03bc\u03b5 \u03ac\u03bd\u03c9-\u03ba\u03ac\u03c4\u03c9 \u03c4\u03b5\u03bb\u03b5\u03af\u03b5\u03c2 (\u03c3\u03c4\u03bf unix\/linux)<\/p>\n<p><strong>\u039f\u03b9 \u03b4\u03b9\u03b5\u03c5\u03b8\u03cd\u03bd\u03c3\u03b5\u03b9\u03c2 MAC \u03b1\u03c0\u03b1\u03c1\u03c4\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03b4\u03c5\u03bf \u03bc\u03ad\u03c1\u03b7 \u03c4\u03c9\u03bd 24\u03c9\u03bd \u03b4\u03c5\u03b1\u03b4\u03b9\u03ba\u03ce\u03bd \u03c8\u03b7\u03c6\u03af\u03c9\u03bd.<\/strong> \u03a4\u03bf \u03c0\u03c1\u03ce\u03c4\u03bf \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03bf \u03bf\u03c0\u03bf\u03af\u03bf \u03bf\u03bd\u03bf\u03bc\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 (\u03bc\u03bf\u03bd\u03b1\u03b4\u03b9\u03ba\u03ae) <em><strong>\u03a4\u03b1\u03c5\u03c4\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c4\u03bf\u03c5 \u039f\u03c1\u03b3\u03b1\u03bd\u03b9\u03c3\u03bc\u03bf\u03cd (OUI - Organizational Unique Identifier),<\/strong><\/em> \u03c7\u03bf\u03c1\u03b7\u03b3\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf \u0399\u03bd\u03c3\u03c4\u03b9\u03c4\u03bf\u03cd\u03c4\u03bf \u0397\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03bb\u03cc\u03b3\u03c9\u03bd \u03ba\u03b1\u03b9 \u0397\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03bd\u03b9\u03ba\u03ce\u03bd \u039c\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ce\u03bd \u03ba\u03b1\u03b9 \u03b4\u03b9\u03b1\u03c4\u03af\u03b8\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03bf\u03ba\u03bb\u03b5\u03b9\u03c3\u03c4\u03b9\u03ba\u03ac \u03c3\u03c4\u03bf\u03bd \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ae \u03c5\u03bb\u03b9\u03ba\u03bf\u03cd. <em><strong>\u03a4\u03bf \u03b4\u03b5\u03cd\u03c4\u03b5\u03c1\u03bf \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03bf \u03c0\u03c1\u03bf\u03c3\u03b4\u03b9\u03bf\u03c1\u03af\u03b6\u03b5\u03b9 \u03bf \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ae\u03c2 \u03c5\u03bb\u03b9\u03ba\u03bf\u03cd \u03bc\u03b5 \u03b4\u03b9\u03ba\u03ae \u03c4\u03bf\u03c5 \u03b5\u03c5\u03b8\u03cd\u03bd\u03b7.<\/strong><\/em> \u0391\u03c0\u03cc \u03c4\u03bf \u03c0\u03c1\u03ce\u03c4\u03bf \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03b4\u03c5\u03bf \u03c8\u03b7\u03c6\u03af\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b5\u03b9\u03b4\u03b9\u03ba\u03ae \u03c3\u03b7\u03bc\u03b1\u03c3\u03af\u03b1.<\/p>\n<p>\u03a3\u03c4\u03b7\u03bd \u0395\u03b9\u03ba\u03cc\u03bd\u03b1\u00a0 \u03c0\u03bf\u03c5 \u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03b5\u03af \u03c6\u03b1\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b7 \u03b4\u03bf\u03bc\u03ae \u03bc\u03b9\u03b1\u03c2 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7\u03c2 MAC \u03c3\u03c4\u03bf Ethernet. \u0391\u03c2 \u03c3\u03b7\u03bc\u03b5\u03b9\u03c9\u03b8\u03b5\u03af \u03cc\u03c4\u03b9 \u03c3\u03c4\u03bf Ethernet \u03b1\u03c0\u03bf\u03c3\u03c4\u03ad\u03bb\u03bb\u03b5\u03c4\u03b1\u03b9 \u03c4\u03bf \u03c0\u03b9\u03bf \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03cc byte (MSB) \u03c0\u03c1\u03ce\u03c4\u03b1 \u03b1\u03bb\u03bb\u03ac \u03b3\u03b9\u03b1 \u03ba\u03ac\u03b8\u03b5 byte, \u03c0\u03c1\u03ce\u03c4\u03b1 \u03c4\u03bf \u03bb\u03b9\u03b3\u03cc\u03c4\u03b5\u03c1\u03bf \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03cc bit (LSB). \u039f \u03c4\u03c1\u03cc\u03c0\u03bf\u03c2 \u03b1\u03c0\u03bf\u03c3\u03c4\u03bf\u03bb\u03ae\u03c2, \u03b1\u03c5\u03c4\u03cc\u03c2, \u03c7\u03b1\u03c1\u03b1\u03ba\u03c4\u03b7\u03c1\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 <span style=\"text-decoration: underline\"><strong>Little Endian<\/strong> <\/span>\u03c3\u03b5 \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf bit.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-138 aligncenter\" src=\"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-content\/uploads\/sites\/15990\/2025\/12\/MAC-300x235.jpg\" alt=\"\" width=\"432\" height=\"339\" srcset=\"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-content\/uploads\/sites\/15990\/2025\/12\/MAC-300x235.jpg 300w, https:\/\/blogs.e-me-4all.eu\/chisg\/wp-content\/uploads\/sites\/15990\/2025\/12\/MAC.jpg 387w\" sizes=\"auto, (max-width: 432px) 100vw, 432px\" \/><\/p>\n<p>\u0388\u03c4\u03c3\u03b9 \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7\u03bd \u03b5\u03ba\u03c0\u03bf\u03bc\u03c0\u03ae \u03c4\u03c9\u03bd \u03c8\u03b7\u03c6\u03af\u03c9\u03bd \u03bc\u03b9\u03b1\u03c2 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7\u03c2 Ethernet \u03b8\u03b1 \u03b1\u03c0\u03bf\u03c3\u03c4\u03b1\u03bb\u03bf\u03cd\u03bd, \u03c3\u03b5 \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf byte, \u03c0\u03c1\u03ce\u03c4\u03b1 \u03c4\u03bf MSB, \u03b3\u03b9\u03b1 \u03c4\u03bf \u03c0\u03b1\u03c1\u03ac\u03b4\u03b5\u03b9\u03b3\u03bc\u03ac \u03bc\u03b1\u03c2 \u03c4\u03bf 74 (0111 0100) \u03b1\u03bb\u03bb\u03ac \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03c1\u03bf\u03c6\u03b7 \u03c3\u03b5\u03b9\u03c1\u03ac (0010 1110), \u03c0\u03c1\u03ce\u03c4\u03b1 \u03c4\u03bf b0, \u03bc\u03b5\u03c4\u03ac \u03c4\u03bf b1 \u03ba.\u03bf.\u03ba.<\/p>\n<p>\u0391\u03c5\u03c4\u03ac \u03c4\u03b1 \u03b4\u03cd\u03bf \u03c0\u03c1\u03ce\u03c4\u03b1 bit, \u03c4\u03b1 \u03bf\u03c0\u03bf\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf\u03c5\u03c3\u03b9\u03b1\u03c3\u03c4\u03b9\u03ba\u03ac \u03c4\u03bf b0 \u03ba\u03b1\u03b9 b1 \u03c4\u03bf\u03c5 MSB \u03c4\u03b7\u03c2 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7\u03c2 \u03ad\u03c7\u03bf\u03c5\u03bd \u03b5\u03b9\u03b4\u03b9\u03ba\u03ae \u03c3\u03b7\u03bc\u03b1\u03c3\u03af\u03b1.<\/p>\n<p><strong>\u03a4\u03bf \u03c0\u03c1\u03ce\u03c4\u03bf (b0) \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf M bit \u03ae I\/G (Individual\/Group). \u038c\u03c4\u03b1\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 1 \u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03b5\u03b9 \u03cc\u03c4\u03b9 \u03b7 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03b1\u03c6\u03bf\u03c1\u03ac \u03c0\u03bf\u03bb\u03bb\u03bf\u03cd\u03c2 \u03b1\u03c0\u03bf\u03b4\u03ad\u03ba\u03c4\u03b5\u03c2, \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03bf\u03bb\u03c5\u03b4\u03b9\u03b1\u03bd\u03bf\u03bc\u03ae\u03c2 (Multicast), \u03b1\u03bb\u03bb\u03b9\u03ce\u03c2 \u03b1\u03c6\u03bf\u03c1\u03ac \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf \u03b1\u03c0\u03bf\u03b4\u03ad\u03ba\u03c4\u03b7.<\/strong><\/p>\n<p><strong> \u03a4\u03bf \u03b4\u03b5\u03cd\u03c4\u03b5\u03c1\u03bf (b1) \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf X bit \u03ae\u00a0 U\/L (Universal\/Local). \u038c\u03c4\u03b1\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 1 \u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03b5\u03b9 \u03cc\u03c4\u03b9 \u03b7 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf\u03c0\u03b9\u03ba\u03ac \u03b4\u03b9\u03b1\u03c7\u03b5\u03b9\u03c1\u03b9\u03b6\u03cc\u03bc\u03b5\u03bd\u03b7 \u03b1\u03bb\u03bb\u03b9\u03ce\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03b1\u03b8\u03bf\u03bb\u03b9\u03ba\u03ac \u03bc\u03bf\u03bd\u03b1\u03b4\u03b9\u03ba\u03ae. \u0395\u03b9\u03b4\u03b9\u03ba\u03ae \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03bc\u03b5 \u03cc\u03bb\u03b1 \u03c4\u03b1 \u03c8\u03b7\u03c6\u03af\u03b1 1, \u03b7 ff-ff-ff-ff-ff-ff \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03b5\u03ba\u03c0\u03bf\u03bc\u03c0\u03ae\u03c2.\u00a0<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0394\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u0395\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c0\u03c1\u03cc\u03c3\u03b2\u03b1\u03c3\u03b7\u03c2 \u03c3\u03c4\u03bf \u039c\u03ad\u03c3\u03bf (MAC) \u039a\u03ac\u03b8\u03b5 \u03ba\u03cc\u03bc\u03b2\u03bf\u03c2 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03b4\u03af\u03ba\u03c4\u03c5\u03bf Ethernet \u03ad\u03c7\u03b5\u03b9 \u03bc\u03b9\u03b1 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ae \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03ae \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c5\u03bb\u03b9\u03ba\u03bf\u03cd (Hardware Address), \u03ce\u03c3\u03c4\u03b5 \u03bd\u03b1 \u03b1\u03bd\u03b1\u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03bc\u03bf\u03bd\u03b1\u03b4\u03b9\u03ba\u03ac \u03c3\u03b5 \u03cc\u03bb\u03bf \u03c4\u03bf \u03b4\u03af\u03ba\u03c4\u03c5\u03bf. \u0391\u03bd\u03b1\u03c6\u03ad\u03c1\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03c9\u03c2 \u03b4\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c0\u03c1\u03bf\u03c3\u03c0\u03ad\u03bb\u03b1\u03c3\u03b7\u03c2 \u03c3\u03c4\u03bf \u03bc\u03ad\u03c3\u03bf (MAC Address, Media Access Control). \u0395\u03af\u03bd\u03b1\u03b9 \u03ad\u03bd\u03b1\u03c2 \u03b4\u03c5\u03b1\u03b4\u03b9\u03ba\u03cc\u03c2 \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc\u03c2 \u03c4\u03c9\u03bd 48 bit (MAC-48, EUI-48) \u03ae \u03ad\u03be\u03b9 \u03bf\u03ba\u03c4\u03ac\u03b4\u03c9\u03bd \u03ba\u03b1\u03b9 [&hellip;]<\/p>\n","protected":false},"author":65040,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-137","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-json\/wp\/v2\/pages\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-json\/wp\/v2\/users\/65040"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-json\/wp\/v2\/comments?post=137"}],"version-history":[{"count":0,"href":"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-json\/wp\/v2\/pages\/137\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.e-me-4all.eu\/chisg\/wp-json\/wp\/v2\/media?parent=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}