Encapsulation query

jscimeca715

I was wondering if when a router receives a frame and removes the header and trailer to view the packet do it go any further up the OSI layer? For example, if it notices that the packet it destined for another router does it re-encapsulate it with another frame without going all the way back to the application layer?

LBC90805

A routers will strip the Data Link Header and Trailer and then View the IP packet within it. It will determine which interface it will go out of and put it in an appropriate Data Link Header and Trailer for the link of that interface; Serial, PPP, Ethernet et al.

It does not go all the way back up to the Application Layer. That will only happen at the destination!

jscimeca715

Thanks LBC, that's what I figured. I'm just over a month away so I'm studying like crazy. I post random questions that I can think of that may show up and stump me. I appreciate it!