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TOPIC: IP address in transport layer?

IP address in transport layer? 12 years 7 months ago #13403

How can the pseudoheader in TCP contain IP address while it works at the transport layer level?Also the pseudoheader will be included in the TCP checksum calculation.Is that because of the interface between the networklayer and transportlayer?Or because of the socket address that works at layer4?
Actually what I mean is-
Pseudo header that is appended to the tcp/udp header contains the IP addresses of source and the destination.Consider at the sender's side .How does the sender know the destinationIP address at layer4?It's only when the packet arrives at the layer3 the sender can know the destination IP .Then how the checksum at layer 4 is caculated with the src IP ,dest IP fields filled?
PLZ reply.

Re: IP address in transport layer? 12 years 7 months ago #13464

  • Tarun
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Not really clear what you are trying to ask...can you rephrase your question or elaborate on it a little more please...
Next would be SP (Service Provider)
CCNA, CCNP (Switching), CCIE#20640

Re: IP address in transport layer? 12 years 7 months ago #13474

-There Is A Foolish Corner In The Brain Of The Wisest Man- Aristotle

Re: IP address in transport layer? 12 years 6 months ago #14105

The article is a good piece of knowledge that is required ... however can we get the little more about the same to enhance more on the topic
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