data link header
destination mac addresssource mac address CRC - FCS
The Ethernet protocol's header includes the source MAC address.
To determine the MAC address of the source in the first frame, you would need to analyze the frame's header information, typically found in a network packet capture tool like Wireshark. The source MAC address is usually listed alongside the destination MAC address in the Ethernet frame header. If you have the specific frame data available, you can extract the source MAC address directly from there. If you provide more context or data, I can assist further!
1)Source and destination MAC Address 2)FCS Field
The destination MAC is before the source one for easier scanning, mostly because it is the destination device that is important as that is the device we are trying to reach.
in the osi model data link layer is adds source & destination mac address to frames
Each packet carries the address of the intended recipient. Each computer has a unique address. It works rather like the postal system.
Source or Destination MAC address
switch
Destination Address (I.P. ) will stay the same during transmission. But be careful! Only if it is Ip address. However if it is MAC it will change as it travels thru diferent routers with different MAC addresses to get to the destination Ip address (which does not change)!
In a completed frame, the order of headers typically follows this sequence: the Ethernet header, which contains source and destination MAC addresses, followed by the Internet Protocol (IP) header, which includes source and destination IP addresses. This is followed by the Transport layer header, such as TCP or UDP, which provides information like source and destination ports. Finally, any application-specific headers may follow, leading to the actual data payload.
solicited-node multicast address