![]() Now the client can send its request for connection to the selected server or any other device for that matter, simultaneously updating its ARP cache. ![]() The supposed friend or the server we need, after getting the client’s message sends a unicast message to share its MAC address. Other devices over the same network ignore the message. The message says “Hello ‘so-and-so IP address’, if you can hear me please give me your MAC address. Broadcast is “one to all” type of communication). Broadcast MAC address is a MAC address consisting of all binary 1s. You can look at the default gateway into the arp cache. If there is no entry in the ARP cache, the client sends a broadcast message because the destination MAC address is a broadcast address (The MAC address used for broadcast ( broadcast MAC address) is ff:ff:ff:ff:ff:ff. to get the IP address you need a device, which is Layer3 capable. In this case, you can see my phone received an IP address of 192.168.1.182 from the router, and you can identify the device as an Apple phone by looking at the vendor OUI. You can view your ARP table on Windows machine by this command: Look at the Address resolution protocol section of the frame, especially the Sender IP address and Sender MAC address. When a client wants to talk to the server on the same broadcast domain, the client first checks its ARP cache, a table with previously connected IP address along with their corresponding MAC addresses. ![]()
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