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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5
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170 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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0answers
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
669 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
34 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
25k 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 ...
2
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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 ...
0
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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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0answers
22 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 ...
0
votes
1answer
36 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 ...
0
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1answer
45 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 ...
0
votes
1answer
25 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 ...
0
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1answer
297 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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2answers
6k 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 ...
7
votes
2answers
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 ...
7
votes
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 ...
0
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1answer
41 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 ...
0
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2answers
73 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
793 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
54 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 ...
0
votes
1answer
14 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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0answers
35 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 ...
1
vote
1answer
30 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 ...
0
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1answer
38 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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votes
2answers
52 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
6k 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
62 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 ...
3
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6answers
501 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 ...
0
votes
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
120 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 ...
1
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1answer
95 views

iptables connlimit: exclude multiple IP addresses

I have currently this IPTABLES command: iptables -A INPUT -s ! 192.168.0.2 -p tcp --syn -m connlimit [...] -j DROP As far as I know, such rule limit some number of connections following various ...
0
votes
1answer
8 views

vnstats // stats showing large tx amount

I have installed vnstat 2 days ago; the site got something like 20k+ visits in this time frame. I can read a rx value of 2.16Gb but a tx value of 61.2Gb. Feels like something's going wrong. How ...
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1answer
28 views

Linux Traffic Shaping: ceil rate never reached

My application run on port 8080. I have this iptables command: iptables -A OUTPUT -t mangle -p tcp --sport 8080 -j MARK --set-mark 10 I have also theses TC rules: tc qdisc add dev eth0 root handle ...
0
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1answer
36 views

How can identify and quantify physical plant (network capacity) in my local area? [closed]

I am interested in identifying physical plant and network capacity in my local area, which happens to be Boston, but could be anywhere. For example, I understand that in Boston there is something ...
1
vote
1answer
158 views

Guaranteed international bandwidth solution?

How plausible is it to transfer large amounts of data consistently via the network? For example, is there a way to guarantee a minimum upload speed of 8Mb/sec from various international sites (Hong ...
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2answers
102 views

How to measure and monitor available network bandwidth without stealing network bandwidth?

Please note that I am not asking for well known usual bandwidth monitoring tools like ntop, iperf, vnstat etc. I would like to measure periodically and reliably the max. available bandwidth of a ...
0
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0answers
71 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) ...
3
votes
0answers
831 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: ...
1
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1answer
95 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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0answers
172 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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vote
2answers
1k views

When reading SSD drive specs, what's the difference between MB/s and IOPS?

I'm trying to find a suitable SSD drive for my database server (postgres on debian 7 amd-64), and I find that for some SSD drives, while read speed is specified in MB/s, write speed is in IOPS. To ...
4
votes
1answer
97 views

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 ...
8
votes
4answers
334 views

Simulate slow connection between two ubuntu server machines

I want to simulate the following scenario: given that I have 4 ubuntu server machines A,B,C and D. I want to reduce the network bandwidth by 20% between machine A and machine C and 10% between A and ...
0
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4answers
15k views

Fortigate bandwidth monitoring

I have a Fortigate 200B with Forti OS 5.0. How can I watch the total bandwidth being used by my unit both incoming and outgoing? Thanks
0
votes
1answer
30 views

Keep showing old processes in nethogs

Nethogs stops showing idle processes after a while. How can I make it keep showing them? I want to have a complete history of processes for long time. Is there any alternative to nethogs?
0
votes
1answer
77 views

AWS per connection download limit

I want to spawn a redis slave in AWS (Sydney), which needs ~20Mbit/s to catch up on the writes of the master located in germany. Problem: I get only 8Mbit/s (1MB/s). Tried bigger instance types ...
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3answers
116 views

Selecting a webserver configuration

I have a website, which has grown from 10 visits per day, to 100 per day in couple of months, and now to about 800 unique visits per day. So far, I have been using a VPS with 512MB RAM, and shared ...
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2answers
115 views

Multilayer LACP

I have a network switch that is limited to 2x1Gb/s LACP teaming, however have a file server with a 4x1Gb/s network interface. What options do I have to aggregate all available bandwidth without ...
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3answers
2k views

Configure a Linux router for fair bandwidth allocation without unnecessary limiting it

I run a Linux router (more precisely OpenWRT) on an internet connection with very limited bandwidth, around 1 MBit/s downstream and some dozen kBit/s upstream. There are several machines on the net ...