EOTec 2104 User Manual
General Features and Capabilities
Broadcast Storm Protection
Each port can be configured to filter out undesirable broadcast and multicast messages.
Buffering
SRAM is used for buffering the messages. The EOTec 2104 Ethernet Ring Switches
have 1 Mbits (128 Kbytes). The buffer size is automatically allocated for each port as
necessary.
Flow Control
Weed Ring Switches automatically support flow control frames on both transmit and
receive sides. Back-pressure flow control is used for half-duplex ports. Pause-frame flow
control is used for full-duplex ports.
Forwarding
Weed Ring Switches support store and forward mode. They will forward messages with
known addresses out only the appropriate port. Messages with unknown addresses,
broadcast messages, and multicast messages will get forwarded out all ports except the
source port.
Full / Half Duplex Operation
The RJ45 ports of these switches support both full and half duplex operation. The fiber
optic port(s) are full duplex but can be interfaced to devices with half or full duplex.
Illegal Frames
Illegal frames as defined by IEEE 802.3 will be dropped. This includes short frames, long
frames, CRC error frames, and alignment error frames.
IEEE 802.3 Compliant
EOTec 2104 Ethernet Ring Switches strictly abide to the IEEE 802.3 standard for
10BaseT, 100BaseTX, and 100BaseFX Ethernet communications.
Latency
The typical latency of a message is 5 microseconds (@ 100 Mbps) plus the frame time.
The latency is the time it takes a message to be routed internal to a switch from one port
to another. This time is highly dependent on the amount of network activity, the speed,
and the features enabled in the ring switch.
Non-blocking
This means that the ring switches offer the best in performance and are capable of full-
wire speed transmissions.
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