Protocol Source IP and Destination IP Fields in IPv4 || Lesson 77 || Computer Networks ||
Protocol Source IP and Destination IP Fields in IPv4
We will try to understand Protocol Source IP and Destination IP Fields in IPv4 in this class.
We have already discussed the concepts of header checksum in our previous class.
Protocol Source IP and Destination IP Fields in IPv4
The Protocol field in the IPv4 header contains a number indicating the type of data found in the payload portion of the datagram.
So far, we have discussed that data will get transmitted in the packet’s payload.
But many different messages are transmitted in the data packet.
For example, ICMP messages are transmitted for sending the error messages.
The transport layer protocols like TCP and UDP are transmitted.
The list of all protocol numbers is provided in the table below.
All these numbers are maintained by IANA [Internet Assigned Numbers Authourity].
The other two fields of the IPv4 header are Source IP and Destination IP field.
The source IP is the IP address of the sending system, and the destination IP is the address of receiving system.
You can find the detailed discussion on IP addresses here.
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ipv4
There is no doubt in my mind that the presenter knows what he is talking about, but it is kind of hard to follow his explanations, unless maybe if you already know all everything he is trying to teach. Which defeats the purpose of sharing information. I'm not sure if it's the speed at which he goes thru explanations, or the accent, or just because english is not his first language. Maybe it's just me.
thank you!