ARP - Wiederholung

Dieses Mal wiederholten wir das ARP-Protocol
ARP: Address Resolution Protocol

Wann kommt das ARP-Protocol zum Einsatz?

Anhand eines Beispiels zelebriert:
Daten von PC1 zu PC2 schicken.

IP-Adresse:
PC1(Sender, wir): 10.15.3.10 /16
PC2(Empfänger, wir wollen die MAC-Adresse des PC's wissen): 10.15.3.20 /16

Nun sendet der Sender(PC1) eine ARP-Broadcast-Nachricht mit dem Inhalt "Who has +"IP-Adresse-Empfänger" ?"
In unserem Fall: "Who has 10.15.3.20?"
Diese Broadcast-Nachricht bekommen alle im zugehörigen Netzsegment.

ARP (Address Resolution Protocol)

Today we're gonna have a look at the ARP (Address Resolution Protocol).

First of all, let's watch this video below and follow the steps in the video:

https://www.youtube.com/watch?v=hx9ZZivtzEE&spfreload=10 

I will start with some general information:

• ARP-Address Resolution Protocol
• ARP resolves IP addresses to MAC addresses at Layer 2
• Frames on a local network are delivered to a MAC address
• So, a MAC address needs to be resolved from an IP address before a packet can be delivered.
• ARP plays an important role in the functioning of local area networks (LAN)
• We can demonstrate the ARP process using a command prompt and Wireshark.