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Questions tagged [traffic-shaping]

Traffic shaping is a technique to delay some or all datagrams to comply with desired traffic profile.

Traffic shaping is a network traffic management technique which delay some or all datagrams to bring them into compliance with a desired traffic profile. Traffic shaping is used to optimize or guarantee performance, improve latency, and/or increase usable bandwidth for some kinds of packets by delaying other kinds.

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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 their LAN devices have high priority, some medium…
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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. When the rate limit i set is less than 300Mbps or…
UnBeliEvaBle
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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-limit filter according to their data plan. Most of…
Branislav Krzanic
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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 could I use traffic control to achieve the same…
Abc Xyz
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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 root refcnt 2 qdisc pfifo_fast 0: dev enp0s25 root…
LetMeSOThat4U
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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 asterisk PBX server, and farm of 5 exchange servers.…
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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 divisor 512 Then I want to send each src up to one…
Xavier Trilla
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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 the pc to have an internet connection. I don't…
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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 ping, Success. create qdisc using following…
Shihab Pullissery
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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 proportion from the excess bandwidth, I'd like to be…
Tony Tannous
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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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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 # Interface DNLD=1mbit # DOWNLOAD…
Sachith Muhandiram
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Linux traffic shaping for large bandwidth (more than 1Gig)

I am doing an experiment between three computers that are connected with 10Gig interfaces and have RTT of 100 microseconds. Let's say these are machines A, B, and C. Machine A is communicating with B and C. Machines B and C do not communicate with…
Sajjad Rizvi
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Limit download speed to single LAN IP using TC on router's WAN interface

Currently I police the rate on my download speed with tc filter add dev ppp0 parent ffff: protocol ip prio 50 u32 match ip src 0.0.0.0/0 police rate 9900kbit burst 10k drop flowid :1 I've got one client on my LAN let's say his IP is…
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Router is slowing internet connection from 17 Mbps to 3 Mbps

The office is equipped with a Edgewater EdgeMarc 4500 router (Software Version 11.6.18 -- Mon Mar 25 14:01:38 PDT 2013). I did a test and determined that the router is slowing down the internet from 17 Mbps to 3 Mbps: ...and as I was writing this…
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