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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3
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73 views

Cannot set DSCP on Windows 10 Pro via group policy

Setting 'policy based QoS' on Windows 10 does not apply the DSCP value to outgoing traffic. I want to be able to set the value of DSCP traffic for certain processes. Using gpedit.msc group policy ...
0
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1answer
34 views

zeroshell qos global bandwidth maximum vs guaranteed

When using Zeroshell QoS what is the difference between the maximum and guaranteed bandwidth when talking about the global bandwidth for the interface? I understand the difference for each of the ...
1
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26 views

Configure Cisco QoS for VLAN

I have two VLANs (20 and 21) that are accessing the same resource on a switch. Clients on VLAN 20 access this resource only at schedule times, but when they do, they generate lots of traffic as ...
0
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1answer
50 views

QOS with iptables and tc with unstable WAN

I have a router/gateway under Linux, I want to add some QoS to reserve bandwidth for a specific flow. This can be done with iptables/netfilter and tc, but all examples start from the fact that you ...
1
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2answers
95 views

How to set VLAN PCP value?

I am using Intel 82599ES 10-Gigabit adapter on a Linux Machine.I have configured Vlan and the priorities on switch. I have read this http://open-lldp.org/dcb_overview. "When DCB is in operation on a ...
1
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2answers
73 views

Percentual dynamic bandwidth control with tc

Does anyone know if tc (iproute2) can be used to percentually divide the currently available bandwidth? We're on a GPRS connection on which the available bandwidth changes frequently. What I want to ...
-2
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2answers
34 views

How the Traffic Classes get defined

I often come across in networking related literature the term 'traffic class'. And it looks like it is platform specific, sometimes they talk about 8 traffic classes, sometimes about 64. 1) Is this ...
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0answers
23 views

How to provide QOS for VOIP in Juniper?

I have 10 computers using browser based VOIP solution and they have problem with the internet connection. they are connected (wire) to Juniper Switches then to Fortigate. How can improve the quality ...
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0answers
17 views

DSCP - Determine bandwidth allocation to each class

I have a QoS network assignment in which I need to allocate minimum bandwidth to three DSCP classes AF41, AF31 and AF21. The first two classes are respectively UDP audio and video. The third class is ...
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0answers
17 views

Ovirt vnic qos burst mode

So, I was applying QoS on VMs which are running in the ovirt 3.5 . I followed This documentation from Ovirt. The thing is when the burst mode is applied once, the network bandwidth reduces to that of ...
1
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1answer
82 views

QoS Traffic Shaping based on packet loss and latency for VPN

I am currently having the following situation: I am using a VPN (OpenVPN) over a rather unstable internet connection. This means the maximum bandwidth varies between 100kbs and 1mbit. Whenever the ...
0
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0answers
58 views

How to copy TOS/QoS field from IPsec payload to outside tunnel packet?

Using e.g. strongswan to build an IPsec tunnel (i.e. tunnel mode, ESP), how do I copy the TOS/QoS/DSCP field from the unencrypted original packet to the outer wrapping packet? There is this ...
0
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2answers
187 views

Windows Server 2012 Policy-Based QoS

I am trying to implement Policy-based QoS on a Windows Server 2012 VM (running on Hyper-V), but for some reason it's not kicking in. The way I added the policy was by going into the Local Group Policy ...
0
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1answer
59 views

Can we prioritize devices connected to a Router

If a number of devices are connected to a router, can we prioritize them (PC - 1, Mobile - 2, Laptops - 3) by giving their MAC addresses. That way if everybody is working, depending upon their ...
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0answers
56 views

How can I prioritize BITS protocol traffic as Bulk class without dragging interactive web applications down with it?

Windows Update (which uses the Background Intelligent Transfer Service (BITS) protocol) sometimes monopolizes our ADSL uplink. It interferes with interactive applications such as our "in the cloud" ...
0
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1answer
2k views

Setting ToS/QoS for VoIP on Mikrotik

I have a Mikrotik router which looks like iptables. I need to setup QoS to ensure VoIP phones get top traffic priority. How do I know what ToS to use and how would I get it? I searched and can't seem ...
0
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0answers
71 views

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 ...
0
votes
1answer
766 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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262 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 ...
0
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1answer
328 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 ...
0
votes
1answer
133 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 ...
0
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0answers
55 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 ...
1
vote
1answer
144 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 ...
0
votes
1answer
113 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 ...
0
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2answers
2k 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: ...
0
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1answer
194 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 ...
2
votes
1answer
924 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 ...
2
votes
2answers
971 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
votes
1answer
1k 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 ...
3
votes
1answer
4k 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 ...
0
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0answers
143 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: • ...
1
vote
1answer
477 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 ...
0
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1answer
380 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 ...
1
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1answer
462 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 ...
1
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1answer
120 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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0answers
46 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 ...
1
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1answer
873 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 ...
1
vote
1answer
403 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? ...
0
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1answer
548 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
60 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 ...
0
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0answers
233 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 ...
2
votes
1answer
879 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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0answers
43 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 ...
1
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1answer
54 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 ...
0
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1answer
630 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
129 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
98 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 ...
0
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1answer
463 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 ...
3
votes
2answers
604 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 ...
0
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1answer
294 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 ...