PDU and layer addressing
Written on 04:08 by Ahmet Emir
Source IP
Destination
MAC
Source Port Destination
Port . . . Data
Destination
IP Protocol . . . Segment
Source MAC Ether-Field Packet FCS
Segment
Packet
Frame
Bit 1011011100011110000
Remember that a abstracts beck is handed bottomward from the high band to the Transport layer.
As technicians, we absolutely don’t affliction who the abstracts beck comes from because that’s absolutely a
programmer’s problem. Our job is to clean the abstracts beck anxiously and duke it to the upper
layers on the accepting device.
Before we go added in our altercation of Figure 1.29, let’s altercate anchorage numbers and make
sure we accept them. The Transport band uses anchorage numbers to ascertain both the virtual
circuit and the upper-layer process, as you can see from Figure 1.30.
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