Consider an Ethernet LAN configuration employing two switches and a hub, as show
ID: 3574629 • Letter: C
Question
Consider an Ethernet LAN configuration employing two switches and a hub, as shown in the figure below. Assume that initially the switch tables are empty. List all ports on which a packet will be forwarded for the following sequence of data transmissions:
1. Consider an Ethernet LAN configuration employing two switches and a hub, as shown in the figure below. Assume that initially the switch tables are empty. List all ports on which a packet will be forwarded for the following sequence of data transmissions: a. A sends a packet to C b. E sends a packet to F c. F sends a packet to E d. G sends a packet to E e. D sends a packet to A f. B sends a packet to F 10 5 switch HubExplanation / Answer
ANSWER:
Initially, two switches is given as empty,
(a) A sends packet to C:
The switch B1 forwards these packets through the ports 2, 3 and 4. The switch
B2 forwards this packet to 1, 2 and 3.
(b) E sends packet to F:
The switch B2 forwards these packets through the port 1, 3 and 4. The switch
B1 will forward it to 1, 2 and 3
(c) F sends packet to E:
The switch B2 will not forward this packet to any of the port and the switch B1
could not see it.
(d) G sends packet to E:
The switch B2 forwards this packet on port 2. But the switch B] will not see
it.
(e) D sends packet to A:
The switch B2 forwards this packet on port 4. The switch B] will forward on
port 1.
(f) B sends packet to F:
The switch B1 forwards this packet on port 1, 3 and 4. And the switch B2
forwards it to port 2.