Question

5. Learning Switch Below is an Ethernet switch connecting Classic Ethernet segments 1, 2 and 3 of a small LAN. The column "Event" of first table lists packets that are sent on the LAN after startup. After each of these packets is sent, list which MAC addresses the switch knows are reachable on an interface, as well as which segments hear the transmission. Initially, the Switch Table is empty so it is not shown. Segment 1 Port Port 1 2 Ethernet Switch Segment 2 3 Port X Y Z A B C P Q Event Switch powers on A?B B?A X broadcasts Y?A Y?X X?Z Z?X P broadcasts Q?P What does the Switch know? Which Segments see Computers on the packet? None Interface 1 None Computer on Interface 2 Computer on Interface 3 None None

          5. Learning Switch
Below is an Ethernet switch connecting Classic Ethernet segments 1, 2 and 3 of a small
LAN. The column "Event" of first table lists packets that are sent on the LAN after
startup. After each of these packets is sent, list which MAC addresses the switch knows
are reachable on an interface, as well as which segments hear the transmission.
Initially, the Switch Table is empty so it is not shown.
Segment 1
Port
Port
1
2
Ethernet
Switch
Segment 2
3 Port
X
Y
Z
A
B
C
P Q
Event
Switch powers on
A?B
B?A
X broadcasts
Y?A
Y?X
X?Z
Z?X
P broadcasts
Q?P
What does the Switch know?
Which Segments see Computers on
the packet?
None
Interface 1
None
Computer on
Interface 2
Computer on
Interface 3
None
None

5. Learning Switch
Below is an Ethernet switch connecting Classic Ethernet segments 1, 2 and 3 of a small
LAN. The column "Event" of first table lists packets that are sent on the LAN after
startup. After each of these packets is sent, list which MAC addresses the switch knows
are reachable on an interface, as well as which segments hear the transmission.
Initially, the Switch Table is empty so it is not shown.
Segment 1
Port
Port
1
2
Ethernet
Switch
Segment 2
3 Port
X
Y
Z
A
B
C
P Q
Event
Switch powers on
A?B
B?A
X broadcasts
Y?A
Y?X
X?Z
Z?X
P broadcasts
Q?P
What does the Switch know?
Which Segments see Computers on
the packet?
None
Interface 1
None
Computer on
Interface 2
Computer on
Interface 3
None
None

Added by Jennifer D.

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