Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » Quick Reference »

Maximum Dedicated Bandwidths

How fast is fast? Chart puts into perspective line speeds used in Internet backbones, LANs, and WANs.

How fast is fast? This chart puts into perspective line speeds used in Internet backbones, LANs, and WANs.

Speed of Internet backbone standards

13.21 Gbps OC-255
10 Gbps OC-192
4.976 Gbps OC-96
2.488 Gbps OC-48, STS-48
1.866 Gbps OC-36
1.244 Gbps OC-24
933.12 Mbps OC-18
622.08 Mbps OC-12, STS-12
466.56 Mbps OC-9
155.52 Mbps OC-3, STS-3
100 Mbps CDDI, FDDI, Fast Ethernet, Category 5 cable
51.84 Mbps OC-1, STS-1
44.736 Mbps T-3, DS-3 North America
34.368 Mbps E-3 Europe
20 Mbps Category 4 cable
16 Mbps Fast Token Ring LANs
10 Mbps Thin Ethernet, category 3 cable, cable modem
8.448 Mbps E-2 Europe
6.312 Mbps T-2, DS-2 North America
6.144 Mbps Standard ADSL downstream
4 Mbps Token Ring LANs
3.152 Mbps DS-1c
2.048 Mbps E-1, DS-1 Europe
1.544 Mbps ADSL, T-1, DS-1 North America
128 Kbps ISDN
64 Kbps DS-0, pulse code modulation
56 Kbps 56flex, U.S. Robotics x2 modems,
33.6 Kbps 56flex, x2 modem communications rate
28.8 Kbps V.34, Rockwell V.Fast Class modems
20 Kbps Level 1 cable, minimum cable data speed
14.4 Kbps V.32bis modem, V.17 fax
9600 bps modem speed circa early 1990s
2400 bps modem speed circa 1980s

Units of Measurement

bit= smallest unit of digital information, i.e. ones & zeros
byte= a set of bits
bps= bits per second
Kbps= kilobits per second =1000 bits per second
Mbps = Million bits per second =1,000,000 bits per second
Gbps = Gigabits per second = 1,000,000,000 (one billion) bits per second
Tbps = Terabits per second = 1,000,000,000,000 (one trillion) bits per second


*Editor's note: individual components in the bandwidth measurement chart have not been separated by Open Systems Interconnect (OSI) protocol layer or media.







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
Internet of Things Shaping IT's Future

To make the IoT both work and pay off, IT is juggling upgrading and building app-centric networks, mapping out new data center architectures and... Read More »

What You Don't Read Can Hurt You

Does this sound familiar? An online service promises to help your small business cut costs, increase productivity, make your coffee and walk your... Read More »

Who's Moving Ahead in Cloud Computing?

The future remains, well, cloudy. But either way: Amazon, look out. Microsoft is gaining fast. Read More »

QUICK REFERENCE
Webopedia Polls

The trend for the past two years has been for shoppers to spend more online during the holiday season. How do you typically shop for holiday... Read More »

How to Create a Desktop Shortcut to a Website

This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Read More »

Flash Data Storage Vendor Trends

Although it is almost impossible to keep up with the pace of ongoing product releases, here are three recent highlights in the flash data storage... Read More »