Madge Networks Token Ring Switch - Manual (Page 43)

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Smart DeskStream Technical Presentation 43
Source Route Switching
Frame Forwarding using CRF
n DeskStream behaves as a transparent bridge
n It learns the MAC and RIF information in passing
frames, and builds up an address table
l Also known as Active Learning
n As frames arrive, the next hop or destination
MAC address is looked up in the table to
determine which port to forward the frame
l If the destination MAC address or route descriptor is
not listed against a port the DeskStream forwards the
frame to all ports
n Up to 2048 entries of MAC or route descriptor in
each DeskStream