A PDU describes eveything that is happening at a particular layer. So, for example, at layer 3, you have all the data that was passed down from 7,6,5,4 then a new layer 3 header gets attached …

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But the main question is if the actual PDU is generated differently based on the layer the device is working at or is a complete layer 2 and layer 3 PDU generated? If a host was only concerned …

I have found following figure in the TCP/IP Vol 1 book. So I tried to find described fields in IS-IS packet capture.But I can not find mentioned fields in the data link layer.But according to the …

When creating a Simple PDU it sends back the "check" message to the source but just with the second time (or I'm not even sure if I understood that correctly). Devices are suppose to …

Luke Savage wrote: Hi Omar, Omar wrote: 5. The ARP request's sender IP address is in a different network than the receiving port.

Open your PT file and try with Ping using many packets (Simple PDU) between PC0 and PC2 for example, you will see the output "failed", but in some minutes, you see "SUCCESSFUL". …

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Layer 3's header is the overhead at layer 3. For instance, if UDP is the passenger protocol of an IP packet then the entire UDP PDU (which also includes all headers for layers 4 and up) is the …

Open the saved file, Click "ADD simple PDU (P)". Click one of the PC in your topology as sender. Then click on another PC as the destination node to send the packet.