Avaya Configuring Line Services Bedienungsanleitung Seite 28

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 268
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 27
Configuring Line Services
1-4
Figure 1-3. Ethernet and 802.3 Message Formats
Ethernet Media
A bisynchronous10-Mb/s Ethernet LAN (10Base-T) uses thick or thin Ethernet
(coaxial cable) or Category 3 twisted-pair cable. A bisynchronous100-Mb/s
Ethernet LAN (100Base-T, sometimes called
fast Ethernet
) uses three different
media interfaces:
100Base-TX uses two pairs of unshielded twisted-pair wires and allows both
full-duplex and half-duplex operation.
100Base-FX uses fiber cabling that supports half- and full-duplex operation.
100Base-T4 uses new physical-layer signals to run over four pairs of
Category 3 unshielded twisted-pair wires. The signals use all four pairs, so
only half-duplex operation is supported.
Currently, some vendors implement 100Base-T full-duplex operation with
congestion control
, a form of flow control, while others do not. You configure
full-duplex operation with or without congestion control to be compatible with the
remote equipment in your network.
802.3 Message Format
Ethernet Message Format
Dest.
Addr.
Source
Addr.
Type Data
CRC
Dest.
Addr.
Source
Addr.
Data
CRC
Length
Seitenansicht 27
1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 267 268

Kommentare zu diesen Handbüchern

Keine Kommentare