6. (5 pts.) The Ethernet interfaces of the hosts and the router shown in the fig

Question

6. (5 pts.) The Ethernet interfaces of the hosts and the router shown in the figure are manually configured. Host 2 has just been connected to the LAN switch and has not yet transmitted any frame. Host 1 wants to send a packet to the IP address of Host 2. (a) Explain how this situation is resolved in practice: how does Host 1 finds the Ethernet address of Host 2? (Enumerate steps) (b) After the Ethernet address is obtained, does the switch keep a record of what Ethernet address is connected to what port? If yes, what is the purpose of this? Switch Host1 Host2 Router

Explanation / Answer

Solution:

a)

The source host which host A here sends the data to the switch and the header of it contains the source address and the destination address the switch reads the header and and compare it with the switching table based on the destination it forwards the data to the port where the destination address is intended to.

b)

Yes, switch has a switching table of its own, this table is maintain to resolve the address requests coming on the switch to transfer the data and the acknowledgements.

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