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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VMware vCenter Server vm traffic [on hold]

We are currently using Chargeback to get monthly traffic reports to bill customers for their VMs traffic usage, with ability to give them detailed report on demand if they claim they didn't do that ...
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20 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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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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1answer
159 views

FreeBSD link aggregation no faster than single link

We're trying to use FreeBSD's link aggregation feature in LACP mode to decrease the time it takes to mirror 8 to 16 TiB of data from a master file server to 2-4 clones in parallel. We've got the ...
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1answer
46 views

Extremely high bandwidth usage on Amazon EC2 instance

I have a m3.medium instance on Amazon EC2. Things are under development and my usual bandwidth usage is no more than 200 to 300 MB per day. I just noticed a spike in my EC2 bill and found out that I ...
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Data transfer/bandwidth consumption when transferring data through different server [closed]

I have been having this question in my mind for a while now, so I am asking it here. I have my server which is hosted with a leading hosting company. In which I have a php script that does the ...
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2answers
169 views

Counting bandwidth from a Docker container

I'm trying to figure out how to track bandwidth coming from a Docker container. Normally I use --uid-owner as mark to keep track of bandwidth usage for a given user. However, even when I run all the ...
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9 views

How do I determine what bandwidth/speed I will need for a website (I know page size, # users) [duplicate]

I am trying to determine the connection speed I would need for my website and monthly bandwidth needed. How do I do this? I know: # of users per month (I'm fine with using this number as a "fact") ...
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20 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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26 views

How much RAM size I will require for VPS hosting on basis of my website [duplicate]

My website is currently on Blogger(.com). Now I am planning to purchase VPS hosting from GoDaddy, I have figured out how much disk space and bandwidth I will require but I am unable to decide the RAM ...
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2answers
184 views

Fortigate 100d 802.3ad bonding / Link aggregation

My network is as follows: 1 x Fortigate 100d with the two WAN ports connected to: Ethernet ISP with STATIC IP configured manually (20 Mbps symmetric) via ISP A Ethernet ISP with STATIC IP ...
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56 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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1answer
36 views

Low Upload Bandwidth Issues

I'm fairly new to the networking world, so please bare with me. On my companies LAN, we are experiencing low upload bandwidth. Download bandwidth is fine. We have a 10 Mbps up and down through our ...
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1answer
58 views

Increase bandwidth per connection on a server

Requirement: I am load testing Rabbit MQ by generating a large number of requests/sec to the server (Server config: 8 core, 16GB). To achieve the above, I am generating load from a client machine at ...
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52 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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3answers
40 views

How do I assess the capacity of my link for Active Directory needs?

I'm working for a company that has a head office and some remote sites. We have an Active Directory server in the head office and we now want all of the users in the remote sites to join and work on ...
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37 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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1answer
51 views

Is it possible to limit output bandwidth between eth0 and lo?

I'm trying to limit the bandwidth between my eth0 output (nginx proxy) to my loopback inteface (apache) by filtering on destination port. Incoming Packet -> Eth0 -> 0.0.0.0:80 Nginx -> tc ...
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3answers
59 views

Leased Line bandwidth distribution among users [closed]

Say that i purchase a 4 Mb leased line (Radio wave), and also i have around 50-75 users using the connection. What will the speed will each user get ? Will the 4MB be divided among all 75 users or ...
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1answer
30 views

Reduce outgoing bandwidth in ffmpeg

I have a server in Rackspace with some ffmpeg processes listening to audio streaming. Off course when listening to streamings the incoming network traffic is high, and this is ok. But I noticed that ...
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1answer
47 views

Streaming audio/video in a publicly-hosted server increases bandwith usage [closed]

I have a website hosted in a public server (withoud any streaming content) ,using public hosting instead of private because its cheaper. But in public hosting their are limitations when compared to ...
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1answer
217 views

UDP bandwidth calculation based on packet size, request rate and latency [closed]

I need to estimate the bandwidth for a measurement application to be written that uses UDP. I have a good sense of the numbers but am not sure how to put them together. I checked a few throughput ...
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87 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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1answer
112 views

Method / Tools to analyze temporarily bandwith collapse

I've tested my server¹ with a python port of mechanize - multi-mechanize. I ran several pretty simple tests - but I always get a drop from 10mbits to some kb of upload bandwith. And I've no idea why. ...
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1answer
39 views

Do you need N times the bandwidth to send same data to N users? [closed]

Do you need N times the bandwidth to send same data to N users (for example when streaming live video to many users) or are current network protocols capable of cloning packets mid-route (or similar ...
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2answers
178 views

Should Skype be reliable in a corporate environment?

I have been managing the IT function in a small software development company that has grown from 10 users to 70 users in 5 years. Most users in the company are office based, but some key users work ...
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1answer
83 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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3answers
950 views

How to use iSCSI MPIO to increase bandwidth with XenServer?

I've 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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1answer
73 views

Best way to optimize site speed for a large traffic website? [closed]

I'm currently managing a Website for a client of mine who gets about about 500-1000 visits minimum a day, and this includes Members uploading videos, photos, blog posts and other content. The site ...
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1answer
86 views

How does HA proxy use bandwidth?

We're using HA proxy for load balancing web servers. How does bandwidth usage work for HA proxy? HA proxy is on a different network than the web servers. Does the bandwidth that ends up being used ...
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83 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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1answer
82 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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35 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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2answers
40 views

How to automatically send email when process is using more than xxxMbit/s

I haven't found anything for that. How could I automatically send an email (via crontab) with the ID of the process, the user & finally what's the name of the process for example when this process ...
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49 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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1answer
719 views

fortigate traffic packets not logged

Ciao, we use Fortigate device since years and now we need to check bandwidth usage per protocol and this is is not possible. We made this test: 1) all policy Logging Options - Log all Sessions 2) ...
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1answer
44 views

PPTPD VPN only forward DNS requests?

Is there any possible way of configuring a PPTPD VPN server to only forward DNS requests on so that I can save bandwidth? Thanks, Francis
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1answer
70 views

why does a multicast server endlessly transmitting packets even no client require [closed]

i used to setup a multicast server using windows server 2003 OS, i can see a lot of packets transimitted from the server once it was started. Does it make sense when no one is requiring the multicast ...
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1answer
44 views

Dedicating a server for latency test

I've created a server to test bandwidth from employees working remote (using speedtest.net mini), but was wondering if anyone knew of a way to setup some software in linux to test latency and possibly ...
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1answer
76 views

What size bandwidth pipe do I need? [duplicate]

I am currently hosting in a data center and paying a very large monthly bill. We are moving to a new office and I have been toying with the idea of installing a leased line and self hosting. Public ...
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1answer
97 views

How do I measure the maximum throughput over a timeframe?

I tried to find out the maximum up- and down- DSL throughput I can achieve on my local machine. I tried it with iptraf: On my server with $IP I started: iptraf -s and on my local machine: iperf ...
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1answer
47 views

How do I ensure a REST API does not have a bottleneck when it receives requests? [closed]

I'm creating a REST API that will listen on a public URL and accept uploads of large amounts of data. I understand how to scale software processes using message queues, but what I don't understand is ...
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3answers
278 views

How do I calculate the necessary bandwidth for my office with PCs and VoIP phones?

In our office we have 30 PCs, 2 WiFi and 6 VoIP phones connected to the network that consumes bandwidth. Basically 30 PCs are simultaneously using the Internet (like Facebook, surfing the web and ...
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142 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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1answer
165 views

Calculate How Much Bandwidth you Need for a Given Number of Users

If I know how many users will be using a site, and about how many will be on at once, and I can approximate how much data is being transferred between the user and server, how can I calculate the ...
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2answers
76 views

Monitor Exchange bandwidth by user / mailbox

We share an exchange servers between 5 different companies. Our exchange server is consuming a massive amount of bandwidth every month (up to almost a TB!). It's hosted offsite and our hosting ...
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2answers
153 views

MySQL connection errors when client server bandwidth is exhausted

I have several servers with a lot of outgoing traffic using nginx. When the bandwidth is exhausted (1Gbit), I have problems connecting to my mysql server from those servers. The connect always fails ...
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1answer
302 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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2answers
240 views

Mysterious Bandwidth Usage

We use a SonicWall NSA 3500 as our main router. We have a SonicWall Analyzer virtual appliance too that takes information from the NSA 3500 and determines all kinds of stuff, such as bandwidth usage. ...
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61 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 ...