CCNA :
25. Switching methods:
1.
Store-and-Forward switching: Here the LAN switch copies the entire
frame into its buffers and computes the CRC. The frame is discarded
if there are any CRC errors. Giant ( more than 1518 bytes0 and Runt
(less than 64 bytes) frames are also dropped, if found.
2. Cut-Through (Real-Time) switching: Here, the LAN switch copies
only the destination address into its buffers. It immediately looks
up the switching table and starts forwarding the frame. The latency
is very less because, the frame is forwarded as soon as the
destination address is resolved.
3. Fragment-Free switching: Here, the switch waits for the collision
window before forwarding the entire frame. The collision window is
64 bytes long.
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