Questions tagged [congestion]

For questions about network congestion, where a network node or link is carrying more data than it can handle. For instance, you are troubleshooting or trying to find a bottleneck in your network topology.

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142 views

How do I configure bandwidth throttling for all HTTP? [closed]

I configured bandwidth throttling for HTTP and ftp FTP using following commands: sudo /sbin/tc qdisc add dev eth0 root handle 1:0 htb default 1 sudo /sbin/tc class add dev eth0 parent 1:0 classid 1:1 ...
4
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1answer
6k views

What is a token in token bucket?

I believe, tokens are nothing but packets, but my question is, weather these tokens are fixed size? If yes, why fixed packets? Can anyone explain the algorithm clearly with examples. Thanks.
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2answers
186 views

Small office networking via powerline [closed]

We're moving to a new office that has no cables installed and we're wondering if using a powerline solution would be adequate. It's a small office with 5 users, 1 server, and some additional devices (...
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2answers
469 views

Congestion control in combination with streaming a video

I was wondering why the performance would decrease when streaming a high quality video to my iphone over a long distance, when you use an end-end congestion control with TCP? I was thinking, TCP has ...
5
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2answers
2k views

Why are both flow control and congestion control procedures required in a TCP connection?

Why are both flow control and congestion control procedures required in a TCP connection - What mechanisms does the TCP protocol use to implement these?
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3answers
121 views

Is a high TCP retransmittal % a conclusive indication of congestion?

I have a web server who's perfmon stats report a TCP retransmittal rate of about 10%. I also have a client who makes heavy use of this server reporting poor performance. The performance problems ...
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3answers
120 views

What is available to prevent a few ports/clients from congesting the network?

Could someone shed some light on measures I could take to ensure a few clients (ports) doesn't flood traffic (perhaps UDP?) and congest the switch for everyone? I've always been a little behind on ...
5
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3answers
576 views

What if someone doesn't implement congestion control?

I was reading about TCP and came across the topic of congestion control wherein the TCP sender is responsible for obeying flow control and congestion control messages to prevent congestion in the ...
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1answer
124 views

Will a network congestion occur if I use a single ADSL router connected to 24 port switch

I'm wondering how ADSL networks are implemented in an enterprise. I have about 20 computers in my network which will be accessing the ADSL internet connection. This is how my network will be : ...
10
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3answers
8k views

How are Weighted Fair Queuing and Weighted Random Early Detection related?

I'm trying to understand how QoS systems work and I'm not sure how exactly would WFQ and WRED interact. At first, I thought that WFQ is a queuing mechanism and that WRED is a congestion avoidance ...
3
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1answer
2k views

TCP Vegas algorithm description

I am making a paper about the different congestion avoidance protocols of TCP and one of them is the TCP Vegas. I have searched a lot on internet about how it's work but I have some questions. If I am ...
7
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1answer
294 views

How is probabilistic marking performed with Random Early Detection?

I am currently studying for my Computer Networks exam. I cannot wrap my head around the following. When the current Average Queue Length is in between a min_threshold and a max_threshold, the Random ...
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12answers
36k views

What would cause high latency anytime there is traffic on WAN?

I have a network that has been experiencing slow internet speeds. After a great deal of troubleshooting, I have determined that any streaming content/downloads will cause the latency of WAN traffic to ...

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