MissionPC-A needs to reach
PC-A needs to reach 192.168.1.7 — but it only knows the IP. Resolve its MAC address.
packet_builder.arp
Assemble the request field by field. Nothing is filled for you.
src MAC 00:1a:2b:00:0a:01 (PC-A)src IP 192.168.1.10 (PC-A)
step 1 of 4 · what kind of payload is this?
EtherType
Operation
Destination MAC — who do we send it to?
Target MAC
00:00:00:00:00:00unknown — that's the point
segment · 192.168.1.0/24● live
beat 1/9 · Cache miss
Beat 1 · Cache miss
The cache is empty
PC-A wants to talk to 192.168.1.7, but it doesn’t know that host’s hardware address yet — so it can’t build a frame.
Mission
PC-A needs to reach 192.168.1.7 — but it only knows the IP. Resolve its MAC address.
Question you will answer
- The question was a broadcast, but the reply came back as a unicast. Why?
Read it now and keep it in mind — the answer is in what you are about to watch.
New to ARP? See the whole exchange once, then come back and build it.