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Ethernet Duplex Mode: Switch 4
The Ethernet link can be configured at either Full Duplex or Half Duplex mode. Although
both ends of the ETHERNET connection must have the same duplex mode
configuration, it is not necessary for partner providers and subscribers to be configured
the same. Duplex mode does not apply to the SHDSL link.
„
Half Duplex Ethernet – Receive and transmit functions are mutually exclusive. Data
transmission occurs in only one direction at a time. Packet collisions are not
unusual.
„
Full Duplex Ethernet – The Ethernet line can receive and transmit simultaneously,
effectively increasing aggregate bandwidth from 10 Mbps to 20 Mbps and
preventing packet collisions.
Table 2. Ethernet Duplex Mode Configuration
Switch 4
down
up
CAUTION:
If you set the SNE Provider or Subscriber unit to Full Duplex, you must also
set your connected Ethernet device to 10 Mb Full Duplex. Do not connect a
Full Duplex Ethernet port to a Half Duplex port or to an Auto-Negotiate port.
Connecting a Half Duplex port (default) to an Auto-Negotiate port will function
properly.
Duplex Mode
Half Duplex
Full Duplex
5
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