Questions tagged [traffic-shaping]
Traffic shaping is a technique to delay some or all datagrams to comply with desired traffic profile.
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Can any help me to understand HAProxy DDoS attack protection configuration?
I'm using HAP on and off for a bit now and now I'm trying confgure DDoS protection per frontend, to block a connection for 5 mints, if it receives more than 200 requests per second from the same ...
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How to realize a user-based bandwidth throttling in VPN or Proxy server
I created my own VPN or proxy server on a rented Ubuntu server. For example it may be an OpenVPN server with Pritunl or a Wireguard server with wg-easy or wg-install or firezone installation script.
...
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Ingress traffic shaping with OVS port
I have a ovs topology like this:
h1
|
|
[SW 1]
/ \
/ \
[SW 2] [SW 3]
\ /
\ /
[SW 4]
|
|
h2
Traffic is sent ...
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Traffic shaping for multipath routing in OVS
I'm working with OVS and tried multipath routing using group tables like in this link: https://github.com/PSIB0T/Multipath-Routing. It splits traffic to buckets with output is different ports.
At ...
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Traffic control on an interface for all sessions
On an interface that is connected to a 1G port I want to limit all users/sessions to have no more than 20Mbits download speed individually. I mean If two of them tried to use bandwidth at the same ...
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tc display hash filter statistic
I just add tc filter like this :
tc filter add dev enp1s0f0 parent 1:0 protocol ip prio 1 u32 match ip dst 10.90.0.0/16 flowid 1:1
tc filter add dev enp1s0f0 parent 20:0 prio 1 handle 4: protocol ip ...
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How can I have different delays for different IP Addresses using tc and netem?
I have been using tc with netem to delay packets being sent from my computer to a specific IP address. I have managed to get this to work but I would like to have unique packet delays to each IP ...
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Is It Possible to configure shaping on Nexus 3064 wtih NX-OS v.6
Is there any can give a solution about how Nexus 3064 could be configured QoS or shaping on their interface?
I'd trying use some policy-map but still doesn't working.
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1
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915
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Limit bandwidth for incoming packets to specific ip and port
I have a Linux server application running on a specific IP and PORT.
Incoming packets need to be manipulated and put into an nfqueue based on sources and ports, for example:
iptables -t raw -A ...
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Traffic control with tc qdisc taprio
Currently, I am working on a TSN project and I am trying to implement a TSN scenario in a Ubuntu 20.04 VM.
I leverage on tc qdisc command:
tc qdisc replace dev gateway-eth0 parent root handle 100 ...
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0
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Linux traffic balacning over multiple interfaces using traffic control
I have a server with virtual machines on libvirt. The server has an eth0 external interface. Each virtual machine has its own tap interface (tap0, tap1, tap2, etc.). I need to balance the traffic ...
- 101
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Add delay to local traffic, not on loopback
I have a (Ubuntu 18.04) server with several network interfaces, and one of them is a LAN interface (call it eth1, on server A, with IP address 192.168.0.1). Several servers are on the same LAN.
I ...
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1
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Huge lag with linux Traffic Control - TBF failed?
I've been working with Ubuntu18.04 and trying to shape the traffic with linux tc. Things went well in the passed few months. Here's my commands:
# init queue
sudo tc qdisc add dev enp2s0 root handle 1:...
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35
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shape voice linux traffic using tc
How to set up a traffic control policy so voice traffic has maximum bandwidth of an specific interface?
I tried
tc qdisc add dev $WIFI handle 1: root tbf rate 10mbit burst 32kbit latency 10ms
but how ...
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Dynamic bandwidth in Tc (Bandwidth Changes over time)
Basically I wanted to change the bandwidth after every 10 seconds using tc. So how to do that thing in tc.
This is my script.
!/bin/bash
#
# tc uses the following units when passed as a parameter.
# ...
2
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1
answer
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traffic control (tc) filter not working
i am using Debian and am trying to limit the upload-bandwidth on an ip basis.
The configuration is the following:
#!/bin/bash
tc=/sbin/tc
$tc qdisc del dev eth0 root 2> /dev/null > /dev/null
$...
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Limit traffic to any one device with nftables meters
I have a Linux server (up-to-date debian buster) acting as a firewall/router to share an Internet connection among several Windows 10 and Ubuntu Linux workstations (5-10, no more than that). Since the ...
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1
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Does tc guarantee network bandwidth for a process or run as best effort?
I have a tc rule as follows:
qdisc tbf 1: dev bwp93ce2ea9d929 root refcnt 2 rate 100Mbit burst 100Kb lat 25.0ms
Is this rule guarantee network bandwidth to be 100Mbps or it'll throttle if not enough ...
1
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1
answer
1k
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Reduce the network traffic priority in Linux
I want to reduce the priority of specific network traffic using tc in particular tc-u32 in my Linux server. In other words all other traffic must have higher priority than traffic with specified IP-...
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1
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Linux traffic control u32 hashtable filters based on MAC address
I am currently working with a traffic shaping Linux node. The rule set has grown to about 2500 hosts, all identified specifically by MAC address. The filter configuration is "basic", meaning ...
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Bash: Dynamically traffic shaping rsync using variables for times schedule and slowing during runtime?
What are some solutions to having dynamic traffic shaping run during a bash script, after a command has already started? Is this even possible?
My use case is, I have rsync running on a huge set of ...
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1
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1k
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Corruption using linux traffic control (tc command)
I am kinda new to doing traffic control using Linux tc commands. So i am doing some hands-on on introducing network delay, packet loss and corruption etc across two hosts in the same network. The ...
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How is traffic shaping handled for WAN links with unknown bandwidth?
We have a customer on a site with an LTE cell link as their WAN connection. The cell provider sells the link as 25Mbps down by 10Mbps up. The customer needs traffic shaping on site, where some of ...
- 305
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1
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677
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Linux HTB: More than 70% of ceil rate is never achieved
Background:-
I have an arm based system, which has HTB setup on the eth and wlan interface.
Here is the HTB configuration:-
tc class add dev eth1 parent 1:1 classid 1:1 htb rate 1Gbit ceil 1Gbit ...
1
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0
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Linux traffic control did not reach expectation when using HTB and filter
I am doing an tc experiment between two servers. When no tc rules are added, the bandwith between the two servers is about 7Gbps tested with iperf3.
Then I add a tc filter based on HTB for testing. ...
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1
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2k
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how to proritize UDP port in tc
I have this TC code
sudo tc qdisc add dev eth0 root handle 1: prio
sudo tc filter add dev eth0 protocol ip parent 1: prio 1 u32 match ip dport xxxx 0xffff flowid 1:1
where XXXX is the port number.
...
2
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1
answer
737
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Unable to set bandwidth limit on ingress wireless interface with netem and ifb
I am trying to limit the bandwidth on the ingress of a wireless interface using an IFB virtual interface. I followed the instructions here
Summary of the steps:
Bringing up ifb:
sudo modprobe ifb ...
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0
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296
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Juniper MX traffic shaping - bypass rate limits for just a few destinations
The aforementioned MX router is a BRAS providing access for about 3,000 subscribers, using the 'dynamic-clients' functionality. Each subscriber demux interface gets assigned a specific firewall rate-...
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2
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Traffic Control - is it possible to distinguish between www browsing and www bulk (iso download) traffic?
Lately i was working on uploading big files to website, this upload eat whole bandwidth and crippled my network. So i implemented chunking one 1MB chunk per second and its working but now I'm thinking ...
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1
answer
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How to remove the ingress delay introduced using tc
I learned that we can introduce delay to ingress packets using tc by following the commands specified in :
https://wiki.linuxfoundation.org/networking/netem#...
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1
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throttle outgoing linux network traffic under high latency
I want to slow my outgoing traffic when it encounters congestion, and measure "congestion" by packet response times. The intent is to avoid one NFS client starving all the other clients when ...
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0
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Using tc qdisc, class, and filter to limit bandwidth (both ingress and egress) based on DSCP marks
I'm looking to set-up traffic shaping program that limits both incoming and outgoing traffic based on 6-bit DSCP field in IPv4 packet header. The user should be able to specify different rates for ...
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1
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1k
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Deleting root pfifo_fast (tc) on Linux
I'm trying to delete all qdiscs to do "fresh" configuration:
% tc qdisc del dev enp0s25 root
RTNETLINK answers: No such file or directory
But it's there:
% tc qdisc show
qdisc noqueue 0: dev lo ...
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Traffic control upload don't limit bandwidth
I'm making some rule to limit the bandwidth per ip connection on my VPN server. My command works for download but doesn't for upload, I don't know what I'm doing wrong here :
#!/bin/bash
TC='/usr/...
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1
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OpenVPN Traffic Control on CentOS 7
I'm trying to give my OpenVPN some bandwidth limitation. I would like for example for each user give 10Mb/s for upload and download. I tried the following answer I found (Automatically Call a Script ...
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0
answers
2k
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Adding some delay to a specific port on localhost using tc and netem
I'm going to simulate a network latency on three different ports of local host by using tc (traffic control for Linux) commands.
I run the following code:
!/bin/bash
tc qdisc add dev lo root handle 1:...
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2
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2k
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Basic QoS bandwidth for all devices/clients
I have an IP network that has about 500+ clients on the network at any given time. The network uses a Cisco 1941 router as it's gateway, and has 5 different subnets. The network also has 2 DCs, a ...
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1
answer
564
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Advanced tc filtering flow map for SFQ queue
I'm trying to change the default filtering for a SFQ to one based on source IP, where each IP goes to a class.
I know I can create a SFQ with more divisors with something like:
tc qdisc add ... sfq ...
2
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0
answers
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Linux HTB number of levels
Re-modified Linux HTB by adding a single printk message in htb_dequeue function.
static struct sk_buff *htb_dequeue(struct Qdisc *sch)
{
... original code
... original code
for (level = 0;...
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How is excess bandwidth distributed in linux htb?
Say I have 100kbps bandwidth
- Root - 100kbps
/ \
/ \
/ \
/ \
/ ...
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1
answer
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Limit traffic on by user OpenVPN server using tc (traffic control)
I run an OpenVPN server with a 1 Gbps bandwidth and I need to limit it to 5 Mbps per user.
Searching the internet I've come up to this bash script:
$U32 = "tc filter add dev tun0 protocol ip parent ...
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1
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6k
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Limit packet rate, open connections, and IP addresses
On Linux, can I use tools like tc, iptables or others to control/shape network traffic on a network interface, for the following purposes:
Control the network packet number rate (or the total number)....
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1
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1
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83
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htb multiply root rate by 8
I am changing the queue discipline to HTB, creating a parent node, and 3 children which are the classes.
sudo tc qdisc add dev em1 root handle 1: htb
sudo tc qdisc add dev em1 parent 1: classid 1:1 ...
- 103
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1
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556
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Captive portal with local webserver and limited internet access
I have a mini pc running Linux. It has a 3G modem, wifi modem, runs nodogsplash for the captive portal, hostapd, dnsmasq, web server that gives out data that the user needs.
I have the 3G device for ...
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1
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568
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tc qdisc with GRE in openwrt
I'm trying to implement traffic control to GRE interface in an openwrt board.
For this i followed below steps,
Create GRE interface named gre1 in both tunnel end devices.
Tested reachability with ...
0
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1
answer
831
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HTB Traffic shaping in Linux - change quantum of a class
I am using Linux HTB to shape traffic, I am able to achieve the bellow diagram. The problem arise when I want to change the allocation for the excess bandwidth, instead of giving each class its ...
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1
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221
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Testing Linux HTB fall short of expectation
I am trying to test Linux HTB, doing the simplest example just to see it actually works.
I am creating a root and giving it 200kbps, then I create 3 classes which each one gets assigned a portion of ...
- 103
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0
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201
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force tbf qdisc to drop traffic
I have several virtual netspaces on my server connected via the virtual adapters. One of the connections between the netspaces is limited to 10 Mbps:
root@core-wkst:/var/log# tc -s qdisc show dev ...
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1
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124
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Split ping RoundTripTime
Data obtained from ping: is it round trip or one way? shows that the data of a ping measures both directions together.
Is there any way to split this information in time-to-destination and time-back?
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1
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Bandwidth shaping for an ipset using qdisc and tc
I am trying to do bandwidth control for an ipset using these tutorials 1,3,21. And this script. I have modified it to get ipsetnames.
This is my bandwithshaing script.
TC=/sbin/tc
IF=wlan0 ...
