gasesti tot ce vrei aici despre standardul ehternet: http://standards.ieee.org/getieee802/download/802.3-2002.pdf
14.2 MAU functional speci?cations The MAU provides the means by which signals on the three AUI signal circuits to and from the DTE or repeater and their associated interlayer messages are coupled to the twisted-pair link segment. The MAU provides the following functional capabilities to handle message ?ow between the DTE or repeater and the twisted-pair link segment: a) Transmit function. Provides the ability to transfer Manchester-encoded data from the DO circuit to the TD circuit. While not sending Manchester-encoded data on the TD circuit, the MAU sends an idle signal, TP_IDL, on the TD circuit. b) Receive function. Provides the ability to transfer Manchester-encoded data from the RD circuit to the DI circuit. While not sending Manchester-encoded data on the DI circuit, the MAU sends an idle signal, IDL, on the DI circuit. c) Loopback function (half duplex mode only). Provides the ability to transfer Manchester-encoded data from the DO to the DI circuit when the MAU is sending Manchester-encoded data to the TD circuit. d) Collision Presence function. Provides the ability to detect simultaneous occurrence of Manchesterencoded data on the RD and DO circuits and to report such an occurrence as a collision. MAUs connected to full duplex mode DTEs are permitted, but not required, to implement the Collision Presence function. e) signal_quality_error Message (SQE) Test function. Provides the ability to indicate to the DTE that the Collision Presence function is operational and that the signal_quality_error message can be sent by the MAU. f) Jabber function. Provides the ability to prevent abnormally long reception of Manchester-encoded data on the DO circuit from inde?nitely disrupting transmission on the network. While such a condition is present, transfer of Manchester-encoded data by the Transmit and Loopback functions is disabled. g) Link Integrity Test function. Provides the ability to protect the network from the consequences of failure of the simplex link attached to the RD circuit. While such a failure is present, transfer of Manchester-encoded data by the Transmit, Receive, and Loopback functions is disabled. Ovidiu ----- Original Message ----- From: "Adrian Pirciu" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, July 10, 2003 12:51 PM Subject: [rlug] Re: Loopback > > In acest mail se pare ca s-a facut trecerea de la un concept la altul si > nu ne-am prins toti. Sau cel putin eu nu :( > > > ----- Original Message ----- > > From: "KobrAs" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Thursday, July 10, 2003 10:38 AM > > Subject: [rlug] Re: Loopback > > > > > serviciile ruleaza pe anumite port-uri si daca nu ai > > > retea pe calculator loopback-ul este folosit ca ip-ul > > > principal unde sunt "bindate" porturile > > > > OK priceput asta cu 127.0.0.1. > > Intrebarea logica urmatoare: cum se pot accesa acele > > loopbackuri hard de pe placile de retea (daca se poate)? > > Gabi > > -- > > > "Let's be realistic and try the impossible." - Che Guevara > > --------------------------------------------------------------- > Cum sa scapam de COLESTEROL si de KILOGRAMELE in plus. Fara medicamente ! > http://www.proeditura.ro/product_details.php?id=81 > Vrei sa devii un amant formidabil ? Sfaturi practice si fara menajamente! > http://www.proeditura.ro/product_details.php?id=62 > --------------------------------------------------------------- Amor si fantezie. Numai pentru femei. http://www.proeditura.ro/product_details.php?id=67 Cartea tuturor timpurilor. Kama Sutra. http://www.proeditura.ro/product_details.php?id=74
