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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psping to localhost - improve throughput

I'm using following psping command to measure the bandwith throughput for localhost on a physical server psping -4 -b -l 8k -n 20000 localhost:1234 The throughput is around 150MB/s wich isn't all ...
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98 views

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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477 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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367 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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32 views

Locating bandwidth bottleneck

I am using FFMPEG to encode a video stream that is sent to a server at EC2 through ELB. I was only able to get about 2Mbps/15fps throughput to the EC2 instance. Through process of elimination, I ...
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28 views

How to check the bandwith that is used by each connection on Apache?

I am trying to get stats on how much of a bandwidth each connection uses on Apache? I have Apache 2.4 installed on Windows Server 2008 R2. I would like to know how many users more I can add on my ...
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89 views

rsync using only spare bandwidth?

My scenario: Several rural schools Every school: One linux server Limited bandwidth (shared with all school PCs) Electricity not guaranteed (last to leave the school could cut all electricity) ...
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300 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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122 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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47 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
69 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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169 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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589 views

Gateway Modem loses ability to DNS lookup intermittently, often under heavy load

We're using a Bell 2Wire Gateway modem/router as our only hub (with some switches attached). Intermittently, but frequently when a large download is initiated, all computers on our LAN lose the ...
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414 views

VPS: How to set a limit to the monthly bandwidth

I have a VPS with Ubuntu installed, want to limit the maximum bandwidth to 300 GB at month. Currently I only use a few GB per month, just for safety I want to do this. What is the best way ? Should ...
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827 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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167 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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196 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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14 views

How to limit bandwidth from inside OpenVZ container without tc?

As the title says I would like to know if it is possible to limit bandwidth (download and upload) of OpenVZ container (from inside it) without use of tc or any additional kernel driver (VPS provider ...
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76 views

Web server losing bandwidth for 6 hours a day

For the past week or so our CentOS server (that runs Apache and NGIX as a proxy) has been acting odd as its bandwidth output has been consistently dropping from around 10/11pm until 4am to around 1M ...
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60 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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148 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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135 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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33 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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78 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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61 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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257 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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118 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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119 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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367 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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21 views

MIBs for SNMP bandwidth monitor on an ASA?

Cisco ASA 5512. Using DataDog. I'm polling ifHCOutOctets and ifHCInOctets via SNMP on my outside interface (ethernet from the provider). However the value seems to always reflect the same amount of ...
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25 views

Poor memory performance on intel avoton?

I have 12 of these supermicro A1SA2-2750F boards that I'm playing around with in order to compare them to Dell's C5220s but I'm seeing consistent poor memory performance. Just curious if anyone's ...
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68 views

wondershaper doesn't work for redirected traffic

I'm trying to prioritize my network so small packages get through quicker so latency-dependent applications don't get unusable when downloading/watching videos. I want to use one pc(with one nic) ...
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158 views

Mac OS X > pfctl > How to limit Bandwidth for a specific port?

I need to limit the Bandwidth of our Apache Server (which runs on port 80 by default). It was easy with ipfw as follows: sudo ipfw pipe 1 config bw 100Kbytes/s sudo ipfw add 1 pipe 1 src-port 80 ...
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44 views

Windows Server 2008 consuming a lot of bandwidth

My Windows Server 2008 has been consuming A LOT of bandwidth in the last days (990 GB). This is a development server so it should not consume more than 100mb aprox. We noticed this after the server ...
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18 views

Sonicwall 250m bandwidth

We have an nsa 250m with the SonicOS Enhanced 5.9.0.2-107o version. Is there a way to manage bandwidth by group ? I'm already able to do this this by user with this method Firewalls => Access rules ...
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37 views

Web Hosting Bandwidth

The company that hosts my web servers mentions a 2mb/s dedicated bandwidth with a burst of up to 5mb/s using the 95th percentile ( Burstable ) billing. To me that sounds slow but I know nothing about ...
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69 views

Reduce Bandwidth on a cisco router (Cisco 877)

PS:Sorry for my english i'm french so i'll try to write the best as I can. I looking since a few weeks now for a command to reduce the bandwidth on a cisco router. I done try a lot off command and ...
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147 views

Monitor traffic on ports with Cacti

This seems like a basic question, but i haven't found any solution yet. Recently I've installed Cacti for interface traffic monitoring. That works fine, but I would like to see these graphs for used ...
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73 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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205 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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329 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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68 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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98 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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235 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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42 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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43 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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24 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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102 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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220 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 ...