Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [traffic-shaping]

27 questions
8
votes
1 answer

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 specific time period, such as the past week or…
Javad Zamani
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3
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1 answer

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 ffff tc class add dev $ifc parent 1:0 classid 1:1…
Chris Nelson
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3
votes
1 answer

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 working on macvlan? I am using the following…
shaifali Gupta
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3
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0 answers

Is there a way to tag any specific application's traffic with DSCP/ToS

I recently made the switch from windows to linux (Manjaro). To manage traffic I had been using a windows feature that allowed me to specify the name of an application so that its network traffic would be tagged with a specific code (DSCP), my…
Depak
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3
votes
0 answers

Simulate network on a single machine

I'm trying to simulate a network on a single machine. I have multiple nodes that communicate through tcp sockets. I tried to create one dummy interface for each node like this: ip link add name int1 type dummy ip address add 10.0.1.1 dev…
Joao P
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3
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3 answers

queueing in linux-htb

I am trying to understand the queuing mechanism of linux-htb QDisc and QDisc of linux tc in general. What I could gather: During TX, the packet is queued into the queue inside the linux tc. This queue by default follows a pfifo_fast QDisc with a…
sbhTWR
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2
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0 answers

ipfw dummynet per ip fair traffic shaping

I want to shape traffic in such way, that no specific user could exhaust WAN connection that much so other users would be affected. I have ISP link with 100Mbits/s bandwidth and sometimes some users can exhaust it when they download something from…
Никита
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How to shape bandwidth fairly between processes?

While running QBitorrent, other processes get virtually no bandwidth, as QBittorrent gobbles up all of it. Chrome loads forever, pings time out etc. I could just limit QBittorrent to not use all of the bandwidth, but for that I'd have to know the…
PaperTsar
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2
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1 answer

Confirm and/or remove a possible traffic shaping setting

I have a Debian box up and running with KVM and two guest machines, which I will refer here as Tux-A and Tux-B, both bind to the same physical network card of the Host via a bridged connection. The problem is that Tux-A shows evidences of some sort…
funkoolow
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1 answer

Traffic shaping with PPP: which external device should I use?

I have a dual-homed device running Debian acting as my home router, and I'm following these instructions to get fq_codel usefully working with my VDSL connection. I know the instructions refer to Gentoo but the principles are the same. I have these…
Flup
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0 answers

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 on Linux is to use the netem qdisc. However,…
mirabilos
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1 answer

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 dev eth2 prio 100 protocol all parent 1: u32 match…
Bruhfus
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vote
1 answer

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 dev eth0 parent 1: classid 1:1 htb rate 100kbps tc…
Tenders McChiken
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1 answer

Does the Linux traffic control utility modify datagrams, IP packets, or frames?

I am using the Linux's traffic control (tc) utility, which to my understanding is used to configure the Linux kernel packet scheduler. I am also using the netem command in tc to add delay, drop, or corrupt traffic. My main question is, does the…
Khalid
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1
vote
0 answers

IPTABLES: issue with impacting traffic to a subnet using --destination flag

I am applying iptables rule to impact outbound traffic into a subnet. I send the traffic into a new chain created and then tc impose some delay using netem. TC is then using that rules. Something like this: /sbin/iptables -t mangle -I…
user2118100
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