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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6
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1answer
4k 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 ...
0
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2answers
568 views

Dynamic throttling of bandwidth

I am planning on setting up streaming server. Streaming is done kind of like YT does it; there will be a large number of audio content and each user can listen to it right on the website. In order ...
16
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3answers
3k views

Connecting two desktop switches with more than one cable?

I was hoping to find a way to increase bandwidth between two desktop switches I have, and I wondered if connecting them with two cables (or perhaps three) instead of just one might increase ...
2
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1answer
125 views

Does 404 errors eat the server bandwidth?

I am facing a strange issue where one of our servers (used for internal purpose) hosted by Rackspace uses huge amount of bandwidth (but our actual users are using the server rarely). FYI, the said ...
0
votes
1answer
139 views

Is there a command to check the network bandwidth of a server? (linux)

I am trying to compare different cloud server providers and one thing I am interested is the network bandwidth like 1Gb/s. Many vendors are not explicit in this respect. Is there a way in Centos to ...
0
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0answers
98 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 ...
-3
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2answers
196 views

What software to use to generate bandwidth graphs in real time? [closed]

What sofware could I use to monitor my server's bandwidth in realtime, or at least, update every x minutes. My server (dell r620) is connected to a routerboard Mikrotik rb1200. But, as my router is ...
0
votes
1answer
307 views

Bandwidth Usage: ActiveSync vs IMAP/CalDAV/CardDAV

I have been trying to find bandwidth usage information how the technologies compare. I understand that ActiveSync is instant, and new changes get "pushed" to subscribers. But IMAP/CalDAV/CardDAV is ...
0
votes
1answer
411 views

Can FTP bandwidth usage result in dropped SSH connection?

It seems highly implausible, even ridiculous, to me. I login by SSH to the CentOS server. I FTP to another server and begin a large file transfer out (uploading to other server). After some time ...
-2
votes
1answer
64 views

Backupchain bandwidth calculation [duplicate]

we have 7 servers being backed up right now using backup chain locally for about a year now. I have tried the FTP backup on one of our financial number crunch VMs to move it offsite to our other ...
1
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1answer
1k views

Active Directory Replication Bandwidth Consumption

There are lots of articles out there describing how to architect your replication toplogy, and all the reasons why, and they all boil down to conserving bandwidth, and achieving a convergence time ...
0
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1answer
233 views

LAN bandwidth in Linux is low

everyone, I connect two PCs both with 1000Mbps NIC. One(A) of them runs Fedora 8 while another(B) runs Windows7. I test bandwidth between them with Ixchariot, it shows about 10Mbps. If A and B both ...
0
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0answers
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 ...
-3
votes
2answers
84 views

How much data can be sent and received at the same time on a T-3?

A T3 is rated for 45Mbs. What is the expected run time upload and download speed of a T3 assuming both are happening at the same time?
0
votes
1answer
185 views

100 Mb/s port limit reached or something else?

I have a dedicated server with a 100 Mbps port. A few times a week, there comes a time (usually in the evening hours) when there is an extremely high bandwidth usage, by far more than usual. I am on ...
1
vote
1answer
652 views

Random gigabit bandwidth with my Samba fileserver

I own a personnal Fileserver, build on an AMD X2 platform, with an intel gigabit CT network adapter, running debian 6.0. I've built a raid5 (2To x 3), shared by samba 3.5.6 From my desktop computer ...
1
vote
4answers
4k 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 ...
1
vote
4answers
2k views

How can I calculate the 95-percentile bandwidth usage of a network device?

My provider is billing my bandwidth using the 95-percentile method. I know what it is in principle (take measurements, throw the top 5% away and use the remaining highest as result). The question ...
3
votes
2answers
923 views

Monitor Internet bandwidth by IP in a LAN environment?

I am new to networking so pardon if this is a stupid question. I want to see how my users use the internet bandwidth. I have around 50 Users in the network and I am using a checkpoint edge series ...
1
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2answers
133 views

How can I report bandwidth usage over x days, broken down by port and protocol?

I need to generate reports showing bandwidth usage broken down by port and protocol, based on all data sent/received over the last x days, in a fairly simple and secure way. Storing full traffic ...
2
votes
1answer
161 views

Is there an effective way to monitor the load on each switch?

We have about 200 IP phones in our building and I realize we got more complaint about the phone quality after we switched our internet from 50Mbps to 200Mbps Up/Down. I know there's a possibility ...
2
votes
2answers
3k views

How can I give a running process priority for bandwidth usage on Windows?

I found myself accidentally starting two large uploads, and since they are single BLOBs, I cannot easily stop/start them, potentially loosing much time. However, I prefer one of those processes to get ...
3
votes
2answers
688 views

Determine what machine/device is consuming bandwidth

I sometimes help a small office with a few issues. About two months ago, they were complaining of poor internet performance. Long story short, I found one person running Carbonite on a Mac that was ...
0
votes
1answer
937 views

openvpn TCP/UDP slow SSH/SMB performance

I have question about strange behavior of my openVPN configuration on Debian lenny. I have 2 server configs (one proto tcp-server based and one proto udp based). ISP bandwidth is 7Mbit/7Mbit. When I ...
-3
votes
2answers
1k views

Would a VPN allow me to get around the monthly data cap set by my ISP? [closed]

My total data allowed without being charged extra is 50gb during 8am-12am and unlimited overnight from 12am-8am. I have to watch how much HD streaming I do and mass downloading because of this. Thanks ...
0
votes
0answers
192 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 ...
14
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1answer
16k 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 ...
1
vote
2answers
445 views

Monitor remote Ubuntu server's bandwidth usage using Nagios?

I recently setup Nagios for the first time and I love it so far. Figuring out how to better organize all those config files took a while, but once I had a better understanding of everything I'm really ...
0
votes
1answer
279 views

How to mark outbound FTP traffic with iptables?

i have a user called "testuser" in my debian system and i want to mark the FTP traffic going from testuser's account how can i do that? i use following commands to mark all the outgoing traffic for ...
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2answers
1k views

how to limit upload bandwidth per user in linux?

Can anyone provide the tc command to limit upload bandwidth per user in Debian Lenny? I found that to mark packets per user with iptables I can use the following command iptables -t mangle -A OUTPUT ...
3
votes
2answers
2k views

Limiting bandwidth on internal interface on Linux gateway

I am responsible for a Linux-based (it runs Debian) branch office router that takes a single high-speed Internet connection (eth2) and turns it into about 20 internal networks, each with a seperate ...
-1
votes
1answer
945 views

How to calculate bandwidth limits per user on WiFi network

A typical 802.11g access point can provide around 25 Mbps of bandwidth. How is the bandwidth shared among the users? Furthermore, how many users can be served by a single access point using 802.11g ...
0
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1answer
372 views

Why does nginx reverse proxy incoming bandwidth increase and surpass outgoing by far when proxy_buffering is enabled?

This is my current configuraiton... proxy_buffering on; proxy_buffer_size 32k; proxy_buffers 128 32k; proxy_send_timeout 20; proxy_read_timeout 20; #proxy_max_temp_file_size 1m; proxy_temp_path ...
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votes
2answers
464 views

Is ceph usable with only 100Mbps bandwidth between nodes? [closed]

I haven't great hardware, but my requirements are low, I would like to start using ceph so as to abstract filesystem location and allow potential easy scaling to bigger hardware in an hypothetical ...
15
votes
2answers
370 views

What are the different classes of Internet Connection and how do they differ?

I'm looking for the technical differences between consumer and professional Internet connections. By "professional" I mean: The kind you can get at a datacenter The kind you can get at an office ...
3
votes
3answers
323 views

Why are the prices for broadband bandwidth at data centers much higher than consumer/small business offerings? [closed]

The prices for broadband bandwidth at data centers are sometimes as much as 10x higher than for a typical small business/consumer connection, at least where I live. Now, I understand those are two ...
40
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5answers
2k views

Is there a linux terminal command that lets you see the amount of data coming in to your tcp connections in real time?

It would be something similar to top, where you see your cpu processes in real time. I'm not looking for a GUI like Wireshark to do it.
1
vote
2answers
475 views

Linux - Get Outbound/Inbound Traffic by IP address

I am hosting a website and I found that the traffic on my server is quite high. My Linux server is behind a router in a DMZ. I would like to see the traffic made on my Linux box on the eth0 ...
2
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1answer
297 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 ...
-1
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1answer
386 views

when a hosting mentions 100mbps bandwidth, what does it mean? [closed]

Most of web hostings say 100mbps bandwith, does it mean 100mbps upload and download combined ? what is the share between upload speed and download ? is 50 50 ? or 40 60 ? or etc ? Can anyone explain ...
-1
votes
2answers
343 views

Tool to analyze the real time traffic in Windows XP SP2 [closed]

My client machine/(s) is/(are) Windows XP SP2. I can’t effort every time to have physical access to my server machine. To analyze the real time traffic and bandwidth between client and server machine, ...
5
votes
2answers
1k views

lxc bandwidth control using tc

I am trying to restrict bandwidth inside my containers. I have tried using the following commands , But I think it is not getting effective. cd /sys/fs/cgroup/net_cls/ echo 0x1001 > ...
-6
votes
1answer
394 views

What buffer size should I use to maximize disk I/O bandwidth? (16Kb, 32Kb, 64Kb, etc.) [closed]

I am trying to write a file as fast as I can through a buffered FileChannel similar to a BufferedOutputStream. I am wondering what is the optimum chunk of data I should use per write call to maximize ...
1
vote
1answer
301 views

Monitoring outgoing bandwidth of application

I currently have a VPS that is consuming a ton of outgoing bandwidth and I am trying to drill down to where this may be coming from. Does anyone know of a logical way to go about finding out which ...
2
votes
1answer
915 views

How to limit the download speed after first N mb in Squid?

In my network, when someone is downloading big files, the internet speed is going down for everyone else. So what I want to do is, when someone starts downloading a file, he will download first 5 ...
-2
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2answers
423 views

Does RDS on Windows Server 2008 R2 have a default max bandwidth per user?

Is there a default max bandwidth limit on users of RDS Host in Windows Server 2008 R2?
1
vote
1answer
295 views

iptables/haproxy limit packets per second

Is it possible to limit incoming tcp packets per second (or bytes per second) with iptables or haproxy? I have found many examples but none of them seem to work.
-2
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1answer
156 views

Bandwidths relation to data rate?

What is the relationship between bandwidth and data rate? I know bandwidth is usually just the difference betweent he highest and lowest frequencies but then how does data rate come into play? What ...
2
votes
1answer
88 views

Host data transfer limit calculations and network protocol headers

OK, this might be a really stupid question, but... I'm building a web app that utilises websockets. There's fairly rapid messaging going on, so I've been taking a look at the network traffic with ...
2
votes
3answers
2k views

How to distribute my DSL bandwidth between users?

I am very new to networking and don't have enough knowledge so please forgive me! We have a DSL connection which is used by more than one user. All the users are using MS Windows 7. Can we allocate ...