In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc.).

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Social Media event Bandwidth requirements

I have an one day event in July 2012, hosting 250 attendees for a social media event. We will be uploading live video to a website, allowing the press to access the web, and some vendors will be ...
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217 views

Measure Upload Speed between a client and our server

We host a SAAS application specially customized for multiple clients. For one customer in particular -- they are reporting sporadic performance issues from various locations on their network, in ...
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824 views

SonicWall TZ 200 Network bandwidth or usage monitoring

I was using Pfsense for a while and recently replaced it with SonicWall TZ200. What I miss now is a Bandwidth or usage monitoring like BandwidthD to monitor IP wise traffic. How can I do this ...
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76 views

Where is my bandwidth?

We've got a DSL line rated at 7Mbps. The best speed test results are little over 4Mbps. After replacing our modem, and spending hours on the phone with Verizon, they say that 4Mbps is within ...
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287 views

Openvpn limit bandwidth

I would like to ask you a question concerning openvpn and the possibility to increase the bandwidth in case I want to transfer files. I have an openvpn server via which I connect to my data center. ...
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41 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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64 views

Configure trickle to add guestOS

I want to configure Trickle to prioritize my bandwidth with an installed app on ubuntu, I understand the basic config: [ssh] Priority = 1 Time-Smoothing = 0.1 Length-Smoothing = 1 [www] Priority = 2 ...
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156 views

Linux Router - Share bandwidth per IPs with current active connections

We have a Linux machine running as a custom router, currently utilising Shorewall. This sits between our incoming internet connection and the internal LAN. What we would like to achieve is 'fair ...
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774 views

pfsense 2.0 traffic priority - set full priority for single host

I have a network with several computers all on the same network and since I have very limited bandwidth I would like to prioritize traffic almost like a CPU scheduler prioritize processes. Example: ...
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177 views

how to measure IP bandwidth in pass through mode in linux?

I want to measure the IP bandwidth in pass through mode. Please find the attached picture for configuration and my question also. If there is no solution with OpenWRT, I need any alternative ...
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0answers
91 views

Virtualmin Inbound Bandwidth Monitoring

I am hoping that someone can point me in the right direction of a Virtualmin plugin or script that will allow me to actively monitor INCOMING bandwidth usage on a per virtual server basis. The built ...
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30 views

Group traffic shaping with traffic control?

I'm trying to limit the output bandwidth generated by an application with linux tc. This application sends me the source port of the request that I use has a filter to limit each user at a given ...
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63 views

HTB equal bandwith sharing per ip in one class

In my tc configuration (shown below) in one class all bandwidth is shared among connections equally, but I want to share bandwidth among all IP addresses equally. Now: 192.168.0.2 - 38KB/s ...
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74 views

nginx and cloudlfare ip confusion?

I am using the below config in http block of my nginx.conf to get real ip while using Cloudflare acceleration service: ## Cloudflare settings to get Real IP's set_real_ip_from ...
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96 views

big speed difference on a network link with and without VPN tunnel

Scenario: We have a network link between two offices. The link is provided by a third party company through a VLAN on their network, but to us it is totally transparent -as if we had a simple ...
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27 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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56 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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32 views

When CopyQueueLength is high, how do I control which server is the source?

When I have a DAG with copies spread all over the world, and the initial seeding is already complete, how does Exchange control which server is used to fulfill the outstanding CopyQueueLength logs ...
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222 views

Bandwidth Consumption on VPN + SSL

I need to estimate how much bandwidth (in Kilobytes) I will consume doing a https request (with client ssl authentication) between two servers connected through VPN over Internet. There's no need to ...
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104 views

Getting bandwidth spent by user or by rails application on Ubuntu

I'm running multiple rails applications on AWS instance and I need to know how many bandwidth is each application using/wasting. Some of the applications are running with passenger over Apache2 some ...
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107 views

How to monitor bandwidth on host which uses bridge-util and virtualization

I am running a debian squeeze box with bridge-util and LXC containers. I guess this is a 2 part request. I would like to know what my total bandwidth usage is I would like to see it broken down by ...
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295 views

Apache - Very high load/bandwidth and unusual pattern of requests

I am a web developer and have this server that's being used as a development machine of sorts. So, my experience with Apache is that I can fiddle around and get basic stuff done / google stuff to get ...
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17 views

Accelerating OpenVPN using multiple connections

My ISP throttles single connection downloads, but if I use an accelerator like aria2c and open lets say, 20 connections, my download speed shoots through the roof. I have been able to saturate my ...
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48 views

Brute force attack on my servers ports burning through bandwidth

Am having some form of brute force attack being done to my server and I have a screenshot of what's happening below. Remote Address 121.14.154.206 is somehow abusing all of my ports and burning ...
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34 views

If I enable bandwidth control on my wifi router can I handle more connections reliably?

I have a small router (TP-Link TL-WR841N) bandwidth is 300 Mbps. With default settings it cannot handle more than 10 connections without choking and kicking people out. Theoretically, however, it can ...
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61 views

nginx - limiting bandwidth usage per server block

In Apache we have some great solutions for limiting the bandwidth usage per vhost, like mod_bandwidth. However, since I started using nginx, I couldn't find a way of limiting and monitoring the ...
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64 views

Windows 2012 R2 RRAS VPN Bandwidth issue (worked fine with 2008 R2)

3 machines : VPN Server (VS) Random Server (RS) My Personnal Computer (PC) PC and VS on different networks VS and RS are on same network VS can connect the internet directly and has a bandwidth of ...
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27 views

View historical data per IP with PRTG packet sniffer

I have recently set up PRTG's packet sniffer sensor for bandwidth monitoring. I am able to pull up historical data in 15 minute increments and see who was the highest user but I would like to see ...
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44 views

Trace Route, Slow Pings, timeouts on after server restore

I am getting bad ping times on my server, especially for large data requests. The stored procedure on the server runs at 1 second, while calling it through my web applicaiton takes 23+ seconds. This ...
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116 views

Speed limit on streaming/downloading MP4 files

Even though other file formats are downloaded fast, MP4 files are downloaded / streamed at max of 160 kb/s I checked everything that may limit the bandwidth but couldn't find it. How can i make ...
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58 views

Traffic Shaping Script Not Working

I wrote a script trying to use HTB algorithm to limit the throughput of specific ports, below is the script: tc qdisc add dev eth0 root handle 1: htb tc class add dev eth0 parent 1: classid 1:1 ...
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37 views

Balancing server bandwith

I am working on a file uploading website. It will be run on dedicated server with 1GBPS connection. I wanna offer visitors max download speed possible at the current moment. So lets say server can ...
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23 views

Bandwidth usage for the server (all users) in WHM

Is there any way to check the bandwidth usage of my server in WHM? (Preferably with a monthly history).
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32 views

Throttling bandwidth on a per group basis

I am wondering if it is possible to create a bandwidth shaping/throttling script that shapes traffic based on user group. That is, if user1, user2, are in user group group1, they will have 1mb/s ...
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32 views

Cisco bandwidth guarantee based on remote host address

On my cisco I have softphones connecting to some external host. How can I assure to all traffic to/from this external host to have its minimal bandwidth (in case of congestion) of 2Mbit? All other ...
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39 views

What Is the Smallest Burst Value for HTB Algorithm (QOS)

Regarding the HTB algorithm, I want to know what is the smallest burst value in an HTB shaping rule such as "tc class add dev eth0 parent 1:1 classid 1:10 htb rate 5mbit burst 15k". Is it MTU?
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94 views

Varnish bandwidth accounting per domain - How to do it?

Does anyone know is there way to do bandwidth account per domain on Varnish. Or is there a way to use some other system to monitor how many bandwidth consumed per domain? Thanks
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25 views

Excessive data consumption over ppp0,can't find the culprit

I have an embedded computer that uses GPRS to access the outside world. I have several applications that run on the local network. I also have an application that communicates over the loopback ...
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57 views

Can I use MRTG to show the cumulative bandwidth of all servesr together?

I am currently using MRTG to graph the bandwidth of my servers. It is working well, however I have only the bandwidth chart for each individual server/network interface. I would like to have one ...
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22 views

Control Usage Of bandwidth for each site

The scenario is as follow. Let's take an example I have one domain called abc.com.I have purchased this domain.Now I am providing facility to the users to create their sites on this domain.So suppose ...
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86 views

Monitoring bandwidth on multiple hosts with no control of a router

I'm looking for ways to monitor bandwidth usage for some Linux servers (and a couple of Mac/Windows servers, but if I can only do the Linux servers that will be OK). I do not control the router that ...
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96 views

TC Bandwidth Shaping for all clients

I am running a video site and want to shape the download speed of all clients. How can I apply my tc class to all the clients by ip, i.e. every user has a download speed of 128kbit/s, no matter how ...
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75 views

limit bandwidth for each IP

I have a basic question. I use Frontpage to manage my website and I assume it uses HTML coding. I recently experienced a huge traffic coming to my website from few (say less than 10) IPs and shut ...
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156 views

Windows Server 2008 - how do I increase http bit rate? (IIS, 100mbps port) I only get 900kBps rate

IIS, quad core, 2gb ram, 100mbs port. (It's not a live site yet, so there's no bandwidth use.) If I download the same file at the same time I get another 900kBps. I'd like to know if there's a way to ...
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249 views

FTP transfer speeds - each file seems to be limited

I'm not sure if this is an issue, or configuration problem, or just the way it is but I am doing a large transfer of files between data centres, Washington DC -> Salt Lake City, around 14TB total, ...
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47 views

Server suffering serious speed drop

As you can see from the picture http://i.imgur.com/UpDZh.png), my server is suffering a serious drop in speed. This is intermittent and has been happening for the past 3 or 4 hours. The server has ...
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46 views

File transfer - Bandwidth dropping down, following a pattern

This is what I get from the destination server while transferring a huge file to it over the LAN. The screenshot has been taken during the file transfer, I did not paused anything, the transfer was ...
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289 views

Speed drop after first few seconds

On a job site I maintain (IT admin) I notice that downloads start at a pretty high rate (cca 700MBps) and then drop significantly to rates as low as 40Kbps... Not sure where to look first to determine ...
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220 views

Squid priority with expropiation

I have this situation and I want to know if anyone of you has some insight of how to solve it. I'm using Squid as proxy server. And this is theoretical the situation: My bandwidth is of 10kbps ...
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18 views

How to collect bandwidth data each process have used?

I got a x86 ubuntu server(production) And running following daemon: /opt/bin/daemon config1 /opt/bin/daemon config2 python anotherdaemon config1 python anotherdaemon config2 And I want to ...