*Window size -- MSS -- MTU -- Fragmentation**
Window Size:
Lets assume there should be a data exchange that should happen between the system A and System B. Due to limitations on hardware capacity on both the system, they both may not have a same buffer memory space to receive the segments.
Due to this their window size would be exchanged among them during TCP 3 Way handshake.
Consider an example:
System 1: Window size is 1576 bytes
System 2: Window size is 1900 bytes
MSS (Maximum segment size): 1460 Bytes (MTU-Headers = MSS)
This is the transport value on which the data can be transmitted by the router/switch that is directly connected to the system/server.
MTU (Maximum Transmission unit): 1500 Bytes (With TCP+IP Header)
Payload data (MSS) + Headers = MTU
Fragmentation:
As far as i am aware, The fragmentation is being supported only on the attached router/switch. System/Server does not care for fragmentations.
Though the servers are capable of sending the larger data segments, the attached router/switch can able to transmit the segment at the size of 1460+40 byte headers.
Due to which the packet would be fragmented and sent as smaller packets.
Azar Sayyad Feel free to comment, If I missed something.
Window Size:
Lets assume there should be a data exchange that should happen between the system A and System B. Due to limitations on hardware capacity on both the system, they both may not have a same buffer memory space to receive the segments.
Due to this their window size would be exchanged among them during TCP 3 Way handshake.
Consider an example:
System 1: Window size is 1576 bytes
System 2: Window size is 1900 bytes
MSS (Maximum segment size): 1460 Bytes (MTU-Headers = MSS)
This is the transport value on which the data can be transmitted by the router/switch that is directly connected to the system/server.
MTU (Maximum Transmission unit): 1500 Bytes (With TCP+IP Header)
Payload data (MSS) + Headers = MTU
Fragmentation:
As far as i am aware, The fragmentation is being supported only on the attached router/switch. System/Server does not care for fragmentations.
Though the servers are capable of sending the larger data segments, the attached router/switch can able to transmit the segment at the size of 1460+40 byte headers.
Due to which the packet would be fragmented and sent as smaller packets.
Azar Sayyad Feel free to comment, If I missed something.
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