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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520 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
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2answers
386 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
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3answers
341 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 ...
41
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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.
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2answers
519 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
352 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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1answer
453 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 ...
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2answers
381 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
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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 > ...
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1answer
438 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
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1answer
319 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
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1answer
1k 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 ...
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2answers
445 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?
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1answer
305 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.
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votes
1answer
160 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
91 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
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3answers
3k 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 ...
0
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1answer
383 views

Bandwidth monitoring with iptables for non-router machine

I came across this tutorial here that describes how to monitor bandwidth using iptables. I wanted to adapt it for a non-router machine, so I want to know how much data is going in/coming out and not ...
1
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1answer
341 views

What does it mean - to get billed to the 95th percentile at $x.xx per meg?

I got a quote from a colo, saying "I could do 3U, the power and 20 megs burstable to 100 for $250 a month with each additional meg billed to the 95th percentile at 6.50 per meg..so you would ...
2
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0answers
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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3answers
1k views

Find whats using all my servers bandwidth

TLDR: how can I dig deeper into my Mac mini OSX server to determine what processes are consuming so much bandwidth, or where all the inbound traffic is coming from? Resource caching is on, all ...
0
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1answer
985 views

Windows DNS consumes loads of bandwidth

I have some problems with my two AD/DNS servers for my hosted Exchange setup, as they suddently began to consume large amounts of bandwidth (~10mbit each), which I think is really strange, as they are ...
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votes
2answers
135 views

Bandwidth and Speed monitoring software [closed]

I am looking to get some advice on what you guys think would be a good fit for my requirements. My goal is to find software which would monitor internet speed (UP/DOWN), ping times and more(possibly) ...
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1answer
2k views

squid proxy 2.7 limit bandwidth [closed]

I have a squid 2.7 proxy and i'm letting some friends use it for fun in school etc. However since i got a bandwidth limit on my vps that is hosting the proxy I need somehow to throttle the amount of ...
1
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1answer
66 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 ...
0
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1answer
53 views

Storing pages with only client-side code in S3 over full EC2?

Question: Would storing pages in S3 with only client-side code reduce costs in comparison to hosting them in Amazon's EC2? Background: Right now I use a cms to manage all of my pages and users for a ...
3
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1answer
215 views

Bandwidth * Delay Product

I'm trying to calculate the bandwidth delay product between various hosts, and reading this wiki article, I am confused. From the acticle; Residential ADSL2+: 20 Mbit/s (from DSLAM to residential ...
1
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1answer
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 ...
2
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2answers
981 views

How do I reserve bandwidth for rsync?

Currently nginx uses all my bandwidth. How do I leave some for rsync?
4
votes
3answers
59k views

How to limit bandwidth speed from a router for a devices on a network? [closed]

How to limit bandwidth speed from a router for a devices on a network ? There are several devices accessing the internet thru a wireless network. I cannot change settings directly on the ...
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2answers
578 views

afp/smb transfers caps at 2 megabytes/sec, wireless N

I wanted to transfer files between two mac computers. The network is wireless-N and both computers have wireless-N modules in them. The problem is that when I transfer files between them, via file ...
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1answer
522 views

What is the maximum supported data rate for PCIe? [closed]

Given a particular generation and link width, how can I determine what the maximum bandwidth is? I've looked across the Internet and various unofficial sources appear to disagree on the numbers. ...
4
votes
2answers
218 views

Is there a linux command/tool that will provide end-to-end bandwidth information between local and external host?

CentOS 5.x At times, I've wanted to know what general bandwidth constraints exist between my servers and an external server that I don't have control over. Is there a linux command/tool that could ...
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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) ...
4
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1answer
2k views

Cisco ASA: Prevent any single internal host from saturating bandwidth of outside Internet interface

We have an ASA 5510 at the edge of our network connected to a 10Mb Internet pipe. All internal IPs are private so we have external and internal interfaces. I'd like to prevent any single internal host ...
2
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3answers
6k views

Rsync Throttle Upload Bandwidth --bwlimit=KBPS

I am looking to throttle the upload speed of my file transfers during an rsync process. Does --bwlimit=KBPS mean it sets the internet transfer speed, or the hard drive disk write speed? ...
1
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2answers
365 views

RDP Over Mobile Satellite Internet

I am planning a vacation to a destination that will not allow me to have cell or Internet service. I play a role in my organization such that in an emergency situation, my availability is of some ...
1
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1answer
306 views

Local network speed appears to be being limited

I have a dedicated server setup that has just started causing us issues. Our immediate problem, is that last week, could log into an admin page of one of our websites just fine, now we can't. It does ...
2
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1answer
1k views

How to measure how much bandwidth a ssh connection is using per day?

I have an ssh connection that I run to access a remote machine. At present I use autossh to keep the pipe open 24/7. I am curious as to how much the pipe alone uses bandwidth wise. How can I measure ...
0
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1answer
74 views

IMAP traffic bandwidth usage

I want to find out how much of my bandwidth is related to email downloads. We use Google Apps for our email and have around 60 iMAC users donwloading email via IMAP. Our firewall is an ISA Server ...
4
votes
1answer
421 views

measuring bandwidth per-user used by ssh server-side connections on linux

I'd like to be able to measure the bandwidth used by each user by their inbound ssh connections, into a linux box. I measure most other traffic using iptables and user-matching, but inbound ssh ...
2
votes
3answers
196 views

Cisco ASA and Cisco Switches, how do I determine top senders / receivers?

I'm dealing with a high bandwidth situation and need to determine what host is sending / receiving the most data. How can I get the logs necessary that will contain this information? I'm OK with ...
2
votes
1answer
506 views

Limit scp (with sshd on centos) speed / rate

I'd like to let users download / upload files via scp to my centos 6.0 system, it's connected to lan via Gigabit ethernet, but I don't want transfers to flow at that speed. I want to limit the speed ...
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votes
1answer
2k views

How do I calculate my bandwidth requirements?

We have a facility that needs to upload approximately 20 3MB photos per minute to Amazon S3. These are coming from 10 different machines on our local network. We need to do this continuously for 16 ...
3
votes
3answers
451 views

Does google's web crawler download binary files?

My Google-fu is failing me right now. I'm trying to figure out whether Google's web crawler downloads non-image binary files when it spiders sites. I know it downloads (and indexes) images and PDFs, ...
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1answer
1k views

Stealing internet by changing MAC address? [closed]

OK - I have a static IP - and I have been on the same provider for years - its a wired network (a cable goes directly to my network card) - and the cable is connected to a switch on a pole in the ...
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votes
1answer
46 views

Bandwidth and RAM for our VDS [closed]

We are planning give an iframe from our server to the site which daily visitor 500k. What do you think about how much do we need system resource such as bandwidth and RAM. Thanks
0
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1answer
500 views

linode server bandwidth

I am ready to deploy my startup on the web so i would like to start small and get a VPS from linode as i see many good reviews and see how its going... the thing is that on their website they state: ...
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1answer
632 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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3answers
772 views

Why does a wired network slow down with user increase?

If you had a wired network, 20 PCs hooked up to a 100 Mbit/sec switch (same onboard ethernet port speed) and you were just sending some test data round. What is the technical explanation as to why 20 ...