What changes on a frame as it passes...

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Hello everybody.
I got one question that is haunting me.
When a pc requests or sends information at layer 2, frames, what changes as this frame reaches a router in order to reach another pc on the other end of the router?
Let’s assume that this pc1 is 192.168.28.1/25 and it's mac is 0001.0202.0303, connected to the router on fa0/0 192.168.0.1/30 - mac 0000.0000.0002 and PC2 on the routers fa0/1 192.168.0.2/30 mac - 0000.0000.0003. The pc2 on this end, fa0/1 is 192.168.28.129/25 and its mac is 000.000.1234.

The frame leaving the pc1 to pc2 contains its own layer 2 address 0001.0202.0303 as being the source and the destination address of pc2 as being 192.168.28.129? Or the routers layer 3 address on fa0/0 192.168.0.1?

What changes on a frame as it moves along the network? Is it the physical address (MAC) or the logical address (IP)????

This is buggering me. I have goggled it but nothing close to what I am asking.

Any help well appreciated everybody.
Please help.
Cheers,

 

and MAC addresses are in Layer 2

When a frame is sent out on a network to another that frame contains booth addresses, layer 2 and 3 but one of those changes as it moves along the network, no?

 

I find it hard to believe that your courseware doesn't contain any information on this topic... it's covered in depth in Chapter 7 of the Cisco Press ICND1 book. You might check it out!

 

That's where you went wrong...
You should of Googled it!

 

http://www.certforums.co.uk/forums/thread33446.html

A recent topic about this.