Quality of service is the ability to provide different priority to different applications, users, or data flows, or to guarantee a certain level of performance to a data flow.

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What could cause files > 50kb to timeout? (PFSense Router)

I've got a PF Sense box acting as a gateway work the LAN at my work, with packet filtering enabled (for QOS purposes) files > 50kb cannot be attached to email, uploaded to web pages etc... even ...
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1answer
21 views

QoS/traffic-limit on internal ports in OpenVSwitch

I am currently trying to put traffic control on our OpenStack cloud and my questions in one sentence would be: is it possible at all to rate-limit particular port with type internal? The whole story ...
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13 views

Traffic Control in OpenStack Neutron with either TC or OpenVSwitch

As far as I know, QoS in OpenStack Neutron is still under development and not production-ready (I could be wrong on this point though, shout at me if so...), but we are required to implement traffic ...
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28 views

Delaying packets with libnetfilter_queue

From my Raspberry Pi configured as an access point, I set the following rules: sudo iptables -I FORWARD -p tcp --sport 25 -j NFQUEUE --queue-num 0 sudo iptables -I FORWARD -p tcp --sport 80 -j ...
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8 views

QS_SrvMaxConnPerIP whitelist

Is there way to add IP to some kind of whitelist in mod_qos? I have couple of IP which are exceeding QS_SrvMaxConnPerIP = 50 and I don't want to set higher value for other IP's, so I would like to add ...
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15 views

iptables — capture pptp connection attempt packets and place into holding pattern

Problem I have a problem of too many simultaneous connection attempts to a vpn server causing all connections to drop. Staggering connection attempts fixes problem. How can I use iptables to do the ...
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1answer
47 views

Internet bandwidth split with HP1810-8G, using “DSCP QoS policies” and VLANs

I have the following scenario: We are a small company (~10 clients) with little resources and we rented out office space to another company(<5 clients). We ordered a 20 Mbit fiber connection which ...
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68 views

Fortigate 80c router - Limit the bandwidth of specific ips

We have a fortigate 80c router in our office. We have two server that keep uploading files and take all the office bandwidth. How can i limit their bandwidth from the router?
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40 views

Need a web server where I can programmatically allocate bandwidth to specific user

I want to set maximum download bandwidth per IP programmatically. Suppose if I allocate an IP 20mbps, he can download 2 files each in 10mbps. The server may be FTP or HTTP. Are there any web/HTTP ...
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1answer
43 views

Need help understanding a bandwidth restriction on a Cisco ASA

We have a guest wireless network here and it's bandwidth is limited too 1 Meg per second. I did not configure this and am trying to pick it up. I've found these lines in the cisco config but i'm not ...
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27 views

Apache2 requests waiting on other requests (dead lock?)

OS: Debian 7.8 but will be migrated to Ubuntu 14.04 TLS; Apache 2.2, mod_jk/1.2.37, Railo 4 Problem: requests timeout, the locks from the applications times out I have an api with a lot of ...
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2answers
882 views

Limit bandwidth in cisco router with policy-map doesn't work

I have a problem with my scenario in limiting bandwidth of ubuntu PC in GNS3 with class-map and policy-map. this is my topology in GNS3: ...
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1answer
116 views

Windows 2003 R2 traffic shaping & QOS

In our small office a LAN is connected to a modem router that will VDSL to the Internet. As a Windows 2003 R2 server exists in the LAN, I was wondering if is there a way to use this server as a ...
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1answer
393 views

Dummynet Filtering not working on FreeBSD 10

I am trying to do network emulation using dummynet in FreeBSD 10. I have this working in 9.3 however things must have changed and I cant determine exactly what but my setup no longer works. I have ...
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2answers
247 views

Do I need VLAN for VOIP phone if my network switches supports IEEE P802.1p QoS?

I have 30 workstation and 30 IP Phones all under one single network 192.168.9.0. The network switches is unmanaged switch but supports IEEE 802.1p QoS (e.g.: DLink DGS 1008D and DGS 1016D). I ...
2
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1answer
754 views

Traffic shaping outbound clients source ip with tc / iptables

My question is I am trying to limit a users bandwidth on a server and wondering the best way to do this. Before I dive to far into the tc/iptables I was wondering if I could get any advice on this ...
2
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1answer
2k views

QoS settings for Wi-Fi calling on pfSense firewall/gateway?

The new version of iOS 8 as well as Android supports Wi-Fi Calling with multiple cellular providers including T-Mobile in the US. I am currently running pfSense as the primary Internet gateway for ...
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83 views

stress testing a QOS switch

I need to test a network Switch that has QOS capabilities. I need to simulate a large network (preferably up to or exceeding 100 devices), and I need to do it as a live test. My requirements are: • ...
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186 views

Basic QoS configuration with PRIO qdisc is not working

Im using Ubuntu 12.10 OS and i want to prioritize ICMP traffic over other traffic in the egress queue of eth0 interface (as it is my default route to internet). By default this is the Qdisc ...
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1answer
309 views

Cisco Catalyst 3560 PoE 48 with setting interface to auto qos voip trust

All I'm trying to do is copy the running-config from a Cisco Catalyst 2560 PoE 24, to a Catalyst 3560 PoE 48. This is f0/1 from the original switch: interface FastEthernet0/1 switchport access vlan ...
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249 views

Simple Shorewall/netfilter traffic control/prioritization questions and possible strange side effects

I am setting up traffic prioritization for a small business to prioritize videoconferencing traffic over general web traffic. I use Shorewall (which controls iptables/netfiler) on a linux machine for ...
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1answer
245 views

RSVP on Cisco, Understanding and basic configuration

I'm looking for some help about a basic configuration and use of RSVP QoS into a Cisco router (2901 series). Since I have no luck using RSVP into my main network, I have tried to make it work in a ...
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1answer
312 views

qos with tc - high latency voip

I'm having following setup: local pbx doing calls for remote vpn clients. And have trouble with high latency a and quality of voip calls in remote office. Remote office is 10/10mbps link while local ...
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1answer
75 views

Qdisc pfifo_fast in linux and IP Precedence

Im using a embedded Linux distribution for a router system. My goal is to prioritize some traffic with minimum delay. I have a WAN interface with a default pfifo_fast qdisc attached to it. I have read ...
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38 views

QoS on GPRS connection

I have a question about QoS (Quality of Service) on GPRS connection. I have linux server with many connected clients through GPRS. Each of them communicates at the same time via ftp, http etc. How can ...
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1answer
475 views

QoS Degrading VOIP

I have the privilege of trying to optimize our network at work to help improve the quality of the voip system we have. The general setup is: Bandwidth is 18 Mbps down, 3 Mbps up. ~10 people in ...
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1answer
269 views

Do ISPs strip or modify QoS/DSCP headers to and from the edge?

If I mark a packet at a edge location with DSCP, does anyone know if ISPS (or in a general sense, middleboxes) strip or modify the DSCP header on UDP packets before they reach another edge location? ...
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1answer
381 views

Linux Traffic Shaping with “tc”: QoS filter for requests directly on the host not applied?

I'm trying to reduce the interface thoughput to debug my application on slower network speed. I've remembered a tc statement to do this on a interface which was working in the past. I used it on a ...
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0answers
44 views

How can I get QoS over a WDS bridge on Cisco WAP551

I have two Cisco WAP551 devices bridging two physical locations wirelessly across the street from each other (200 feet, line-of-sight through a window). This is replacing a much, much older wireless ...
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0answers
137 views

Layer 2 QoS for Windows Server 2012 service

We have an unmanaged Cisco SG102-24 switch which supports layer 2 QoS (IEEE 802.1p). Because we're installing VoIP at our office, we would like to prioritize VoIP packets from our voice server which ...
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1answer
515 views

Load balancing SDSL + ADSL with Zyxel USG-100

I have a Zyxel gateway/firewall, and two Internet connections : SDSL (4MB up, 4MB down) and ADSL (15MB down, 1MB up). I'm trying to configure my Zyxel to use the two connections, and to use the SDSL ...
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36 views

Is It Possible to Attach multiple Ports to a TC Filter?

I need to limit the bandwidth/rate by ports, and as a server there would be thousands of ports. Due to the limit of tc filter, I wonder if it is possible for multiple discreate ports to share a same ...
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1answer
48 views

How Many Filters Can We Have — LINUX QOS

I am doing Qos on Linux server using TC. According to the grammar of tc tool, the handle of a filter must be between 800::001 and 800::FFF. And because 0XFFF equals 4095 in decimal, so we can only ...
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1answer
448 views

Throttling individual samba connections

I have a CentOS server set up with Samba on a gigabit LAN connection. I've found that if I copy large amounts of data from the Samba server to a client machine that also has a gigabit connection, ...
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0answers
92 views

Why Parent Class In a TC Rules Tree Not Working

The parent class in my TC rules script doesn't work as it garanteed! Can somebody tell me what is wrong with my script? Here are some details about my question: From the chapter "9.5.4.4. Sample ...
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1answer
68 views

iptables filter by bridged interface

I try to make a QOS server using IMQ interface to monitor ingress. my setup : br0 | WAN <=> eth1 => IMQ1 <|> eth0 <=> LAN all go ...
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1answer
294 views

Why This TC Script Not Working

Our application has three classes of traffic, and every type of traffic involves three ports. We want to limit the traffic by port number via TC, so I made a simple TC script to have the test, however ...
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2answers
465 views

Linux qos: tc DRR qdisc does not work

There is tc queue discipline DRR(Dificite Round Robin) . It has same capabilities, as HTB, but instead of using buckets, filled with tokens, it just assignes every queue some Dificit Counter. On ...
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1answer
197 views

What do these two QOS script statements mean

I am studying the QOS utility of Linux -- TC -- recently, and today I encountered below two statments from a bandwidth-limit script on Linux: tc filter add dev eth0 parent 1: prio 1 protocol ip ...
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1answer
458 views

Can TC limit bandwidth by the Qos field of IP header

We are developing a client/server applications. There are three types of network data in our server app: Realtime data such as those of Video/audio, Critical Data such as those of Database data and ...
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1answer
616 views

What kernel module to compile for getting QOS service on Linux

We are developing on Linux system whose kernel had been compiled without QOS service years ago. Currently we want the QOS service back and plan to compile only the QOS-related kernel modules and ...
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2answers
116 views

Bandwidth Reservation vs QOS

what is the difference between bandwidth reservation and QOS? for example, if I reserve 30Mbps to VOIP traffic on a router, is that the same of QOS? or does QOS work in a different way?
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2answers
325 views

Can TC (Linux Qos Utility) limit bandwidth usage of target applications?

We have many applications running on the same server machine which is inside a network of servers. We want limit the bandwidth of our applications to specific value. So here are some choices: ...
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1answer
58 views

Cisco QoS for telephony and videoconference traffic [closed]

I'm new in QoS and gathering information. I have switches 2960, 3750 and routers 2911, 7200 and I have voip and videoconference device/software in my network that I want to pass to Internet through ...
3
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3answers
2k views

VLANs using one managed switch or link router to unmanaged switches?

I'm the resident IT guy in an office with about 20 workers, amongst 3 separate companies who sublet an office. We are wired with 24 ethernet ports dotted around the offices that all lead to a patch ...
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1answer
142 views

Using Linux just for doing QOS on an existing network

I have a proprietary web filtering device which also functions as a NAT router. It's one interface has a public IP and another interface has a private IP. All local clients connect to the interface ...
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2answers
822 views

Is there any open source software for QoS (traffic control)? [closed]

We are doing QoS (traffic control) for our server application. This server provides file download service for users and we want to give different users different priority and bandwith. Suppose the ...
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0answers
204 views

Iperf multiple streams

I need to test my network between two sites using iperf. I'd like to open parallel streams sending data on different (let's say 5 defined) ports, with random length from 10-1000, with random 1-2 ...
18
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8answers
7k views

Mouse cursor jumps around when using RDP

We have over 350 users complaining that their mouse cursor keeps jumping around when typing. It seems like it's happening when the protocol is starved for bandwith, but I'm not quite sure yet. If it ...
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1answer
2k views

QoS on pfSense 2

I have a question about quality of service (QoS) on pfSense 2 I'm using pfSense 2 to load balance 2 internet line. I want to setup some rules let it work better for VoIP (Skype, x-lite), citrix, VPN, ...