Solved

Network transmission speed

Posted on 2006-11-16
1
1,529 Views
Last Modified: 2008-03-10
Hi Experts,

I'm in the process of trying to measure the transmission speed of my network. I have difficulty understanding the correlation between the network capability (1 gigabit Ethernet) and the transmission speed of data (35 megabyte per second). What should the transmission speed be in megabyte per second on a 1 gig capable network (1 gig switch and 1 gig NICs in both servers)?

Also, I've found some tools that can do point to point testing on a LAN - does anyone know where I can find a tool that can show me the possible network capacity, the network usage and also the type of data that is occupying the LAN?  

If someone could perhaps help regards the above questions I'd be grateful. Many thanks!
0
Comment
Question by:avdvyver
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 27

Accepted Solution

by:
pseudocyber earned 250 total points
ID: 17955422
Break it down to bits.

GB      1
MB      1,024 (x1024)
KB      1,048,576 (x1024)
B      1,073,741,824 (x1024)
b      8,589,934,592 (x8)

You have roughly 8.5 billion bits.  Your network can move 1Gb in one second.  (One Billion bits in one second).  So, therefore, a 1Gb network can move 8.5 Billion bits in about 8.5 seconds.

Note - that is a maximum THEORETICAL speed.  You have to add protocol overhead - which is layer 2 headers, layer 3 headers, etc.  So, say you lose 20% efficiency - because not all of that going through will be data - a lot will be protocol information.  So, multiply your 8.5 seconds by 1.2 and you're up to 10 seconds.

Again - this assumes max theoretical.  You will also be limited by hardware - disk i/O, RAM, CPU, NIC efficiency, other traffic on the network, etc.

Now, if you just want to see utilization, cpu, memory, errors, etc. you can use an SNMP monitoring tool like SolarWinds http://www.solarwinds.net.

If you want to see protocol information, this is a little more involved and requires equipment which actually sees the data and monitors it - sort of like a sniffer or packet capture.  If you're using Cisco gear, you could use programs/utilities like Netflow and NTOP and MRTG.

Hope this helps.
0

Featured Post

Revamp Your Training Process

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

751 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question