06-21-2007 07:40 AM - edited 03-05-2019 04:53 PM
Hi all, when people talk about packets and frames, are they the same thing ? also what would be classed as normal amount of packets per second on a lan ?
06-21-2007 07:54 AM
Hi,
Frame = Layer 2 header + packet + layer 2 trailer. When talking about layer 2 devices we always refer to frames.
Packet = IP header + datagram. When talking about layer 3 devices we always refer to packets.
They are sometimes used interchangeably but technically they are different.
HTH, please do rate all helpful replies,
Mohammed Mahmoud.
06-25-2007 01:20 AM
So if the frame stays on layer 2 its still a frame, and when it crosses a router it adds ip header info so its then called a packet ??
06-25-2007 01:35 AM
Hi,
We can think of it as the Frame contains the packet inside it as its payload, as long as the frame is layer 2 switched only the frame header is checked, but if the frame paths over a router, the router will need to decapsulate the frame in order to be able to check the packet header.
NOTE: The frame is constructed in the first place after the packet is fully structured with its ip header.
HTH,
Mohammed Mahmoud.
06-21-2007 09:30 AM
It is:
S = Segment = Layer 4
P = Packet = Layer 3
F = Frame = Layer 2
Hope this helps...Please rate...
06-21-2007 10:25 AM
B = Bit = Layer 1 (1's and 0's)
(just for completeness)
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