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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Firewall Throughputs

I am looking at purchasing a new UTM/Firewall device for the sole purpose of bandwidth control/utilization and guest modes. I have the following terms that are troubling and I would like someone to ...
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SAN capable of 25,000 IOPS at 75kb avg. size, where will my bottleneck be?

I just want to double check my findings here, hope someone out there is able to weight in on some of this. Let's say I have a SSD storage array capable of delivering 25,200 IOPS and it is connected ...
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17 views

Is iperf valid to measure network performance?

We are investigating performance issues in one of our software deployment between our application servers (Windows) and our Redis instances (Linux). On a 10 Gbits/s link single TCP connections can ...
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3answers
6k views

How to use iSCSI MPIO to increase bandwidth with XenServer?

I have a FreeNAS Server with four network interfaces. The iSCSI traffic goes through two of those interfaces, and each interface has one IP address in a different subnet. As example: igb0: ...
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Server Bandwidth issues unexplained by Stats.. what else could it be?

So hit my server bandwidth cap (shared hosting) at 4GB today and i'm absolutely baffled as to why. All my site does is serve bytes of data to a few apps (about 3-4 devices for the past few weeks ...
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1answer
42 views

Video Streming server outbound bandwidth and providers [closed]

Imagine the case of Twitter Periscope or Meerkat.The paradigm of their servers is that they recieve video from users and then stream it to a large amount of users (say > 100K for the sake of this ...
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25k views

Bandwidth limits for Amazon EC2

I have a micro instance on Amazon EC2 cloud. Also the instance is small and it has vary low CPU and EAM usage but it generates a lot of content, so it can be considered like a web server serving ...
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2answers
22 views

How do I monitor network usage on a Windows server?

I would like to monitor server bandwidth usage. The server OS is Windows Server 2012 This should give me as result the amount of data over a certain period of time and separate it by protocol and by ...
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1answer
61 views

Two network adapters for a machine to double the transfer speed [closed]

i am new to this. In my scenario, i have a desktop pc running windows 7 and planning to set up a local web server using xampp for big file transfer in the lab. The problem is that,there are 80 ...
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2answers
49 views

How to test bandwidth [closed]

I have 2 MB Internet Line. 1 real IP how to check or confirm my line is dedicated or my IP is 103.244.185.188 please help me as soon as possible. How to confirm or test my Internet Line+IP share or ...
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1answer
60 views

Ubuntu server close connections unexpectedly after multiple downloads

When I connected to Ubuntu server via SSH connection and run script which downloads a lot of images, its quitting ssh connection after few seconds with error: "Write failed: Broken pipe". Then I can ...
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4answers
100 views

Is data transfer response related to cable bandwidth limit?

Before this, I'm using shared 100Mbps bandwidth. Its fast enough. And now, the server running dedicated 10Mbps bandwidth. When running 10Mbps, it takes more time to completely load the same page. ...
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40 views

What to do when an open source tool requires massive bandwidth? [closed]

I've written a real-time socket API that communicates with a data provider and emits data models to connections subscribed to model events. Imagine the provider is StackExchange and the model is a ...
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1answer
68 views

RTMP load-balancing via HAProxy

I've got a little problem to solve: I need to find a way to load balance, bandwidth-wise, the incoming RTMP streams on my servers. I have 2 RTMP servers (nginx-rtmp), let's call them S1 and S2. The ...
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1answer
13k views

AWS, Bandwidth and content delivery

My question is about Virtual Machines and delivering their content over the servers connection to the internet. I have an Ec2 windows instance, and its network connection appears to be 100mbps If I ...
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0answers
41 views

Bandwidth Policing on Linux gateway - not QoS

I have a linux server providing NAT to a large subnet (/16) using iptables to-destination + multiple external ip's to survive port exhaustion. I've looked at using tc / htb such as here Limiting ...
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1answer
200 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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50 views

How to troubleshoot network bandwidth limitation

Using a dedicated server with 3gbps connection streaming, server crashes at 1Gbps. Pings go from 20ms to 100-500ms, server is slow or unresponsive, streams start buffering or drop. dmesg |grep eth0 [ ...
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1answer
40 views

GPO limited by system version (Windows Server 2012)?

Windows Server 2012 I want to enable this local GPO: Where it says "Supported on: Windows 7 or computers with BITS 3.5 installed" got me confused, because Windows Server 2012 has BITS 7.6 ...
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2answers
234 views

raid controller data transfer rate

I'm going to buy an 8-port raid controller for which the declared data trasfer rate is "Up to 6Gb/s per port". The declared connectors are "Two mini-SAS SFF8088". The maximum number of supported ...
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9 views

turn server hardware configuration [duplicate]

I want to deploy TURN server on CentOS 6.0 which can handle 5000 audio video connections at a time. Can any buddy give me minimum hardware requirement for it? Specifically number of CPU, RAM and ...
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1answer
739 views

Is it possible to get the most bandwidth on a shared network?

I have configured a simple LAN using Ubuntu router. We know that if we don't impose any restriction, total bandwidth of Internet will be distributed among LAN user. If any user try to get half of ...
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1answer
53 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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5answers
27k views

Monitoring Bandwidth Usage (Per Internal IP) - Cisco ASA 5505

I manage a small network with a Cisco ASA 5505 and a shared DSL connection. I would like to be able monitor the bandwidth usage of the various users/devices on my network (by IP address). Can I do ...
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1answer
1k views

bridge traffic limiting via tc

I have a Linux machine running as a bridge simulating various network conditions. I use tc for this. Introducing delays or packet loss is quite simple but I got into trouble trying to configure ...
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1answer
1k views

How do I configure NetFlow 5/9 export on Juniper switches? [closed]

What are the commands to make a Juniper switch send netflow data (V5 or V9) to a netflow collector for bandwidth monitoring?
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71 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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1answer
85 views

What's the catch for unlimited bandwidth for VPS? [closed]

I need to choose some VPS packages, so I started to google a lot of VPS companies. Typically, a VPS package should have a limited bandwidth(or say traffic, data transfer), such as 2TB, 3TB, etc. Then ...
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1answer
140 views

Squid delay pools delay_parameters bandwidth

I can not understand the documentation about delay_parameters params in squid. delay_pools 1 delay_class 1 4 delay_parameters 1 -1/-1 -1/-1 -1/-1 600/8000 What is the difference between the first ...
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1answer
46 views

Troubleshooting poor point to point (over internet) bandwidth between two machines

My problem started out as poor bandwidth between a 64 bit Win 7 Home OpenVPN server in location A (Northern Europe) and a Win 7 or Linux Client in location B (Southern Europe). Location A has FTTC ...
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1answer
309 views

When is directadmin user detail (especially bandwidth) updated? Possible to be online? [closed]

I hope it be the right place for asking about Directadmin, cpanel and other moderation web application. (I've deleted my question from pro webmaster site at http://webmasters.stackexchange.com and ...
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5answers
3k views

Increasing bandwidth with multiple NICs

If I have two NICs in my system and both are connected to different ISP with different IP addresses, can I distribute my network traffic on them to increase my Bandwidth. I have already looked at ...
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7k views

Limit incoming and outgoing bandwidth and latency in linux

I realise many similar questions have already been asked, but so far I've yet to find a solution to my problem. I have a virtual linux server (running Debian Squeeze) that I use for testing of ...
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6k views

What does limit performance of scp?

I've two Debian Linux machine connected via 1 Gbit LAN. I can measure this with a raw HTTP file transfer with wget which gets around 100MB/s in either direction. When I now use scp, the maximum ...
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1answer
1k views

Are network switch data transfer speed limits per port or per device?

When network switches report speeds of say 100 Mbit or 1 Gbit, are they referring to the maximum speed per Ethernet port or is this the physical limit of the switch on all ports? Say for example two ...
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1answer
64 views

NFS Server “outbound” bandwidth consumption

I need to understand about something in NFS (Server). Let say i have: Two Different Clouds (One Server on each) One NFS Server One Apache Server (as the NFS Client) with a NFS Mounted Directory ...
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2answers
123 views

Why does a traceroute from one location to another and vice versa show different paths?

I have recently be plagued by low download speeds from my server and was curious, so I ran a traceroute. (I have removed the end IP and the start IP). I achieve a download speed of 220Kb/s when I am ...
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1answer
832 views

How to choose IP Transit and Co-location providers [closed]

I have reached a capacity where managed hosting is becoming expensive - especially with respect to the cost of bandwidth we are using. A cursory quote from cogent demonstrate that we could be saving ...
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1answer
236 views

Firewall throughput [closed]

I saw on multiple site vendor sites about firewall throughput in 1518/512/64 bytes UDP packet and each result from 1518/512/64 bytes UDP packet is 1xxx/smaler than 1xxx/significantly smaller than ...
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1answer
18 views

VMwaree Workstation. Estimate bandwidth between guest and host systems [closed]

How can be measured the bandwidth speed between Windows 8.1 as host OS and Turnkey LAMP (Debian I guess) stack as guest?
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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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1answer
35 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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1answer
83 views

Monitor bandwidth consumption for all connected PC over wifi

We have two internet connection connected to individual wifi router (beetel) in our office, lately i am experiencing very slow internet connection or frequent connection drops, when complained to ISP, ...
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2answers
62 views

Is it possible to test throughput without server cooperation?

To measure throughput between two points in a network using iperf, you have to run iperf at one point in server mode. My question is, is there a tool I can use to measure this bandwidth without ...
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4answers
7k views

How can I limit a users bandwidth in Windows Server 2008 R2 [closed]

We have a user that likes to download movies with torrents in our office and it just kills the overall network performance. Unfortunately we need this user and don't want to confront him directly ...
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2answers
84 views

Individuals able to hit our bandwidth cap… Only a recent phenomenon?

We have a 10Mbps (synchronous) connection with our ISP. Recently we have discovered that if a single user is watching Netflix, or if I run Windows Update on a PC, we will totally saturate that 10Mbps ...
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6answers
521 views

Gaming on an office lan [closed]

don't shoot me for this one. I'm wanting to get a few of us in our team (say 5 players) to start playing a network game in the office (you know... team building and all that ;) ) - thinking that ...
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3answers
2k views

Cisco 881 throughput/bandwidth issue

We have a dedicated 30Mb connection (up/down) from our ISP, but we can only seem to get 10Mb (up/down) from the router. Does anyone know what we're missing, or how we can tweak the settings on this ...
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1answer
1k views

Iperf bidirectional bandwidth measurement

Server side: # iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ...
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3answers
122 views

IM traffic bandwidth

I work at a midsized global company (~3000 employees), and I recently have had the opportunity to train a new employee. The new guy asked about IM at the workplace, and I told him to have the IT ...