Questions tagged [traffic-shaping]
The traffic-shaping tag has no summary.
28 questions
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Traffic shaping ineffective on tun device
I am developing a tunnel application that will provide a low-latency, variable bandwidth link. This will be operating in a system that requires traffic prioritization. However, while traffic towards ...
- 111
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1
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Changing packet payload with tc
How can tc be used to match a particular payload of an ingress packet, e.g., if the first 32 bits of payload of an IP/UDP packet are equal to some constant $c, the value $c should be changed to $d? ...
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How much data transferred per user via SSH over time period
I have an Ubuntu server with approximately 20 users who primarily use it for SSH tunneling.
I would like to know if there is any way to determine the amount of data transferred by each user over a ...
- 81
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Can no longer ping containers after setting TBF qdisc on Docker0
I am trying to use the tc command to manipulate traffic on the docker0 interface.
I run the commands
tc qdisc del dev docker0 root
tc qdisc add dev docker0 root handle 1: tbf rate 100mbps burst 1600 ...
- 73
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Is it possible to match multiple IP addresses when using tc filter... match?
I would like to match 4 IP addresses as src and other 4 IP addresses as dst when using tc filter
I do know I could use subnets in match but unfortunately my addresses does not form a subnet instead I ...
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84
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Transparently Rate Limiting ANY Connection that is Already In-Progress
Let's say I begin a large download, and (about an hour into it) I find that it is consuming too much of my overall bandwidth.
Is there any way to rate limit that particular connection "after the ...
- 5,445
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Has 10 Gbps through Linux tc qdiscs ever been solved?
I'm trying to use tc to shape traffic on a system with 10 Gbps NICs and I find that I can't get anywhere near 10 Gbps through any qdisc. When I do:
tc qdisc add dev $ifc root handle 1: htb default ...
- 231
2
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362
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Add extra latency on top of existing tc qdiscs
On a system with an existing multi-stage qdisc setup, we need to introduce extra latency (at least fixed, but fixed with a small variation would be a nice option to have).
The canonical way to do this ...
- 1,796
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How to delay traffic and limit bandwidth at the same time with tc (Traffic Control)?
I want to throttle bandwidth and add delay to a network interface to simulate satellite communication. For example 800ms delay and 1mb/s.
The following limits the bandwidth correctly but does not ...
- 29
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567
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tc traffic shaping with HTB and CQB causes packet transmission gap inconsistencies
I am sorry if this is duplicate of https://serverfault.com/q/1076769/822163.
I created that first and then realized the Linux and Unix stack exchange is the right place.
Problem: When the tc HTB or ...
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Linux tc filter add - errors RTNETLINK answers: Operation not supported
I'm working on the network simulation to create some traffic on specific ports , and trying to inject the network delay. I'm using the linux tc utility to do this operations. So i'm new to the tc ...
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Using tc traffic shaping to filter by ethtype
I am trying to make a qdisc that filters out traffic based on its eth type and drops the specified traffic. However my current filter is not working and is not catching any traffic.
'# tc filter add ...
- 13
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0
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193
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Shape traffic to certain speeds for a specific process
I need to shape traffic for a specific PID to certain speeds. For example, I would like to limit upload for PID 7502 to 300Kb/s, and download for PID 7502 to 400Kb/s. How can this be done?
I have ...
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How does a htb qdesc tree handle bandwidth overallocation?
let's say I have a simple htb hierarchy (See man 8 tc-htb) set up where the total bandwidth specified for child htb classes exceeds the total bandwidth specified for the root htb class:
tc class add ...
- 1,329
3
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1
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454
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Traffic shaping using tc-netem on macvlan
I am setting up a virtual network using macvlans and I have connected traffic-control tc to each of them. I set the delay for each as 90ms. But on ping I get the time of 0.02 seconds. Why is tc not ...
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