Specifications

Functions
RS2-4R
Release 1.0 03/04
4.3 Frame switching
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4.3 Frame switching
4.3.1 Store-and-forward
All data received by a RS2-4R is stored, and its validity is checked. Invalid
and defective data packets (> 1,522 Bytes or CRC errors) as well as frag
-
ments (< 64 Bytes) are discarded. Valid data packets are forwarded by a
RS2-4R.
4.3.2 Multi-address capability
A RS2-4R learns all the source addresses for a port. Only packets with
D unknown addresses
D these addresses or
D a multi/broadcast address
in the destination address field are sent to this port.
An RS2-4R can learn up to 1000 addresses. This becomes necessary if more
than one terminal device is connected to one or more ports. It is thus possible
to connect several independent subnetworks to a
RS2-4R.