Ccna Study Flash Cards - Chapter 7

Front 1

LAN Switching Forwarding Logic

Back 1

1. If unknown unicast, broadcast, multicast switch floods the frame.
2. If known destination:
a) If outgoing interface listed in MAC table is different than the interface in which the frame was received - FORWARD it to the interface.
b) If outgoing interface is the same as the interface on which the frame was received, FILTERED.

Front 2

Switch Logic for Learning MAC addresses

Back 2

1) Receive frame and note the interface from which the frame was received.
2) If not already in the table, add the address and interface, setting inactivity timer to 0.
3) If already in table, reset inactivity timer for the entry to 0.
3)

Front 3

Switch internal processing (3) types

Back 3

Store-and-forward
Cut-Through
Fragment Free

Front 4

Store-and-forward (switch processing)

Back 4

Fully receives frame
Checks the FCS

Front 5

Cut-through (switch processing)

Back 5

Forward ASAP
NO FCS check

Front 6

Fragment-Free (switch processing)

Back 6

Forward after getting first 64 bytes of frame.