Questions tagged [transport-protocol]
For questions about or in relation to the transport protocol or OSI layer 4. For instance the best-known transport protocol of TCP/IP is the Transmission Control Protocol (TCP).
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In "Computer Networks:A Top Down Approach" - can multiple applications using the same protocol use its designated port?
I am reading "Computer Networks: A Top-Down Approach," edition 8. On page 153, it says:
Recall also that when a client or server program implements a protocol defined by an RFC, it should ...
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Data link layer and transport layer differences/relationships
Hi I am a network engineering beginner learning about the TCP/IP stack in the context of using web services on an embedded system (processor connected to LTE cellular module).
I am struggling to ...
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Pseudo Header In Layer 4
Why we need pseudo header when calculating the layer 4 protocol checksum ?
Because in layer 3 we already have a checksum to calculate only the layer 3 header checksum, and why we also need to ...
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Do all TCP packets from same http request take same route? If not, how can I better understand where each went?
I understand TCP has a max size for each packet. This limit is probably easily reached with data-heavy responses.
Therefore do all these packets follow the same route (image of a train) or are they ...
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Double-syncs in a TCP communication
One of my co-workers had some odd output on some Wireshark logs with "connecting twice". I went and looked, and sure enough it looks like the client redoing the opening TCP handshake ...
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Understanding how the Acknowedge number is subsequently used by a TCP client
I understand the Acknowledgement number (from e.g a server perspective) represents the sequence number plus the received number of bytes, plus one (suggesting the next byte number it expects from the ...
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Would TCP cubic congestion control always cause packet loss as it tries to increase window size until packet drop?
Setup:
Sender talking to receiver through a ToR where all interfaces are 100 Gbps but the ToR has a smart flow limiter that drops packets if the throughput for a flow is above 10 Gbps.
Traffic:
Sender ...
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wondering on performance of SCP over WAN
I'm using a scp to retrive log files from linux machine. On the way between the PC and the linux machine there is WAN simulator which can be configured to some latency and delay.
Setting the latency ...
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MTU and MSS concept
A client and a server are separated by a router.
I don't understand the principle of MSS adjustment.
When the client sends a SYN packet to the server, the SYN/ack server replies with its MSS.
Example: ...
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Why the growth is exponential in Slow-start-phase (congestion control) even when we increase window size by only 1MSS with each ACK received [duplicate]
I want to know why do we consider congestion window size increase as exponential even though we are increasing it by only 1MSS at each ACK received (Transport Layer).
I have learned that in Congestion ...
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Why is MSS important? Why can't we just rely on the MTU?
Note: I understand both what MTU and MSS do so I am not asking about their function here. I understand that when a TCP connection is being established, the MSS is exchanged and it dictates the maximum ...
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Is it possible to forward SMTP connections for various domains in the same server to different internal ports? [closed]
I have a server machine. If an incoming connection comes on https://abc.com:443, it's redirected to internal port :81 and if https://xyz.com:443, it's redirected to :82. This works fine.
Now I have 2 ...
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TCP Header Data Field
In TCP header there was a field called a data field which stores data, but does this field store the IPv4 header + datagram or just the datagram?
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What happens when the sender sends more data then the advertised window by the receiver?
I am relatively new to networking. I am doubting what happens when the sender sends more data than the advertised window by the receiver. I mean that the receiver advertises the window size based of ...
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how to calculate the udp checksum when the udp payload is and odd number e.g 45 bytes payload [duplicate]
I am new to networking and was learning about the UDP Protocol and i came through the term UDP checksum. I searched the internet spent so much time finding the correct way to calculate the UDP ...
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