100 Mbps Business Ethernet vs OC3 SONET Bandwidth

By: John Shepler

Many high tech companies and large corporations got into fiber optic bandwidth service years ago. The service they chose was the one available: OC3 SONET. Since then, many have upgraded to higher speeds, also in the SONET family of service, or simply stuck with the OC3 that has been performing reliably over the years.

The entrance of 100 Mbps and higher Ethernet MAN and WAN bandwidth is challenging the dominance of SONET fiber service. Long time users are taking a closer look at the competition. Companies upgrading or ordering bandwidth the for first time are doing their homework before choosing one technology over the other.

SONET (Synchronous Optical NETwork) in the SDH (Synchronous Digital Hierarchy) became the core of most metropolitan, wide area and international networks over the last decades. It was originally developed as a massive telephone trunking technology designed to bundle hundreds and thousands of simultaneous phone calls for long distance transport. With the rise of computer to computer communications and the Internet, SONET services were the logical choice to carry data packets as well as voice channels.

What does SONET have going for it? It is a very mature and well supported technology understood by all of the telephone companies and most network carriers. It is highly reliable and can survive certain fiber cuts and equipment failures. There are a number of service levels available between 155 Mbps and 100 Gbps. Costs have also come down over the years to the point where even smaller companies can consider the entry level OC3 SONET service.

Why throw over a winning service for a newer technology like Carrier Ethernet? It comes down to cost, service features and scalability.

In case you haven’t noticed, just about everything that can communicate uses Ethernet. This includes nearly every corporate LAN, all PCs, printers, scanners, routers, network switches and wireless access points. That’s expanding now to telephones, televisions and any other equipment that is joining the “Internet of Things.” Why not an all-Ethernet world?

The brand of Ethernet that leaves your property is called Carrier Ethernet. It has been standardized by and industry group, the Metro Ethernet Forum (MEF), so that it works over long distances, has the operations and maintenance features needed for carrier operations and is compatible from provider to provider.

Let’s compare two very common bandwidth services: 100 Mbps Ethernet vs OC3 SONET. Both are provided over fiber optic strands and delivered to your organization at a specified demarcation point. For Ethernet you use a simple Ethernet copper or fiber patch cord to connect your equipment to the carrier’s demarc. OC3 requires a special interface module that plugs into a router to convert between the Ethernet on your LAN and the SONET that runs on the carrier lines.

This is one reason why SONET is losing ground to Ethernet. If your network and everything on it is running Ethernet, why do a protocol conversion from Ethernet to SONET and back again at the far end just to send Ethernet packets from point to point over to the Internet? There are inefficiencies associated with that conversion process. Plus, you need a specific interface module for each SONET level. An OC3 module won’t work for OC12 or OC48.

SONET has specific service levels, although you can sometimes get fractional or rate limited services below the maximum line speed. Ethernet is scalable by design. The carrier provides an Ethernet port with a maximum speed, typically 100, 1,000 or 10,000 Mbps. Your actual service level can be any speed up to the capacity of the port. You pretty much pay for the bandwidth you are actually using rather than the capability of the circuit.

Scalability can also save you money. A 100 Mbps or Fast Ethernet connection on a 1,000 Mbps Gigabit Ethernet port can be scaled up or down easily. With SONET you start out at 155 Mbps for the entry level OC3. That sounds like 50% more bandwidth and it is. However, many companies really need 50 or 100 Mbps but had to buy 155 Mbps because it was that or nothing. If your 100 Mbps Ethernet connection bogs down, you can call the service provider and ask for an upgrade to 150 or 200 Mbps and have it in a matter of hours or days. If you tap out an OC3 connection, you have to wait days or weeks for an upgrade to the next generally available SONET level of OC12 at 622 Mbps.

Besides being able to order just the bandwidth you need now while knowing that you can easily upgrade when the need arises, Ethernet service tends to be less expensive than SONET on a per Mbps basis. But how about the quality of service? Both can deliver your packets with high reliability, low latency, and rock solid bandwidth. SONET tends to have fewer “flavors” available. It’s usually a protected ring arrangement with symmetrical dedicated bandwidth and five-nines (99.999%) reliability.

With business Ethernet, you need to be aware of what you are ordering. You can now get Carrier Ethernet with the same redundant path protection as SONET to ensure that if one circuit fails, the system will automatically switch to the other path in under 50 mSec. You can also get the same 99.999% reliability, low latency & jitter, and symmetrical dedicated bandwidth that you’ve come to expect with SONET services. However, if your applications aren’t so critical and you are more interested in saving money than in having the ultimate in performance, be aware that you can also order Ethernet services with asymmetrical bandwidth, shared bandwidth and unprotected circuits. These flavors of Ethernet work well for general Internet usage and casual PC backup to the cloud and are considerably cheaper.

Is SONET or Ethernet the best choice for your business bandwidth needs? Get free consulting help from a bandwidth expert who can also get you the best pricing from multiple carriers who offer services for your location. Also get instant online quotes for many bandwidth services up to 1 Gbps.

CloudEthernet Forum Ensures Ethernet Will Dominate

After 40 years you’d think that Ethernet pretty much owns the network space. You’d be right. Token Ring...gone. Token Bus...gone. Fibre Channel... not so fast. SONET... alive and well. T-Carrier...still going strong. It’s not an Ethernet world yet, but it will be if some disrupting technology like, say, the cloud doesn’t spoil the party.

This is the impetus to the formation of a new industry standards group called CloudEthernet Forum. Founded just last month, this spinoff of the highly successful Metro Ethernet Forum (MEF) looks to “address the need for scaling and enhancing Ethernet technology to meet the stringent demands of delivering cloud services.”

What’s threatening to derail Ethernet-everything is something that Bob Metcalfe couldn’t have foreseen back in the 70’s. It’s the massive expansion of networks from hundreds to thousands to millions to billions of machines all talking at the same time. In the case of virtual machines, they are all talking within the same data center. The rise of the “Internet of Things” is only making this situation worse. Pretty soon everything manufactured will have intelligence, even if it is subtly hidden from view.

The old collision domain Ethernet protocol has long given way to a collision-free topology implemented with switches and routers. This eliminated the throughput degradation caused by all those crashing packets and had the additional advantage of doubling network capacity in full duplex mode. Physical layer Ethernet has evolved from thick coaxial cables to unshielded twisted pair telephone-type wiring to fiber optic strands. The next desperately needed improvement was allowing Ethernet to escape from the LAN into the MAN and the WAN.

This is where the Metro Ethernet Forum came into being. The MEF is an industry standards group comprised of over 200 stakeholders including telecommunications service providers, cable MSO’s, network equipment manufacturers, software developers, semiconductor producers and testing companies. Their 10 year mission has been to extend the Ethernet standards to get past the distance limitations needed to extend Ethernet outside the building or campus. They’ve been so successful that Carrier Ethernet services are now common in Metropolitan Area Networks, nationwide fiber optic networks and worldwide communications. The E-NNI or Ethernet Network to Network Interface ensures that carriers can seamlessly exchange traffic, expanding the service footprints of all participants.

What’s been good for the MAN and WAN is surely good in the cloud, where multi-tenant data centers are rapidly replacing in-house server racks. While it’s possible to build a small cloud with a few racks of equipment, what’s really happening is the building of exponentially larger data centers that need to be located near available sources of power to ensure that they can get the electricity they need to operate. These secure facilities house thousands upon thousands of physical servers that morph into millions and millions of virtual machines. Start of the art Ethernet networks are in danger of straining under the new loads.

What sort of improvements does the CloudEthernet Forum expect to make? VLAN scaling, past the current 4,096 VLAN number limit is on the list. The forum intends to recommend enhancements to minimize the effort required to setup and operate virtual machines. They’ll also work on increasing layer 2 performance that can be degraded by broadcast multicast and unicast traffic. Another initiative will be to support cloud storage requiring connections that are highly resilient with extremely low latency. The big plan is to enable millions of virtual servers and storage devices to work effectively over regional and global networks.

The initial members of the CloudEthernet Forum include Alcatel-Lucent, Verizon, Tata Communications, Spirent, PCCW, Juniper Networks, HP, Equinix and Avaya. This august group will no doubt be expanding soon as standards work gets underway.

What can we expect from Ethernet in the future? Right now the switchover from telecom-based standards such as T1, DS3 and SONET to Ethernet, Fast Ethernet and Gigabit Ethernet is accelerating. There are big advantages in linking multiple business sites with Ethernet services that can create a single bridged LAN for the entire corporation. Scalable Ethernet connections allow companies to order the bandwidth they need today while knowing that they can quickly ramp up their WAN speed when the need arises.

Ethernet is proving itself as a reliable connection to the cloud when high speed and low latency are necessary to maintain productivity. The CloudEthernet Forum will no doubt ensure that communications to and within the cloud are able to expand as fast as needed to meet the growing demands of information technology.

Are you missing out on the performance improvements and cost savings offered by Ethernet connections? Check out the expanded services and pricing available for your business locations.

Fiber Optic Service FAQ, Part 2

Here are some more frequently asked questions and answers about fiber optic service for your business You may also be interested in the first list of fiber FAQs.

Q: What types of services are available over Ethernet fiber?

A: The Metro Ethernet Forum has standardized three popular services that are of interest to business users. Ethernet Private Line or E-Line is a dedicated point to point connection between two business locations or from your location to the Internet. Ethernet LAN or E-LAN provides a meshed network service that interconnects multiple locations. Ethernet Tree or E-Tree is a one to many connection popular with companies that distribute content to many subscribers.

Q: How do you connect multiple location LANs together

A: E-Line and E-LAN can do this easily. E-Line is appropriate for two locations to connect as a single bridged network. E-LAN makes sense for 3 or more locations, even those located internationally. E-LAN can make many separate LANs work like they are one larger network.

Q: What is Ethernet over SONET?

A: Most Ethernet providers offer a “native” Ethernet that powers their entire network. If you are in a location that can only get SONET, some carriers offer Ethernet that runs over the SONET fiber. From your prospective, this is the same as any other Ethernet over Fiber.

Q: Can Ethernet carriers interconnect?

A: Yes. The equipment that does this is called E-NNI or Ethernet Network to Network Interface. It allows service providers to seamlessly transfer network traffic back and forth. This allows both carriers to expand their service footprints to wider geographical areas.

Q: What are low latency fiber routes?

A: Most fiber networks strive to minimize latency or time delay between locations. Those advertised specifically as low latency routes are specially engineered to minimize the fiber route length using the straightest path available. They also minimize equipment along the route that can introduce additional latency. Low latency fiber services are in big demand for financial companies that deal in high speed trading.

Q: What is Metro Ethernet?

A: Metro Ethernet or MetroE is a fiber optic network that connects business and other locations within a limited geographic region, usually a single city or metropolitan area consisting of city and suburbs. MetroE connections can also connect to other locations nationally or worldwide.

Q: Does Ethernet support telephone service?

A: Ethernet is a great choice for enterprise VoIP phone service. A specialized service known as SIP Trunking connects your networked telephones or IP PBX to a distant service provider. The higher the bandwidth, the more simultaneous conversations can be supported. Traditional analog phones are better supported with analog phone lines or ISDN PRI service over T1 lines.

Q: Is Ethernet over Fiber distance limited like Ethernet over Copper?

A: No. Fiber offers unlimited transmission distance at any speed you wish. Most service providers have regional networks that serve multiple states or offer nationwide service. Some carriers connect worldwide using undersea cable between continents.

Are you interested in what fiber optic bandwidth service can do for your business? If so, get get instant online pricing up to 1 Gbps and complementary consultation with a bandwidth expert if you wish.


You may also be interested in reading Fiber Optic Service FAQs, Part 1 and Part 3.

FastE Fiber as MetroE for Business Ethernet Service

Business bandwidth demands are not only rising, but rising fast. What’s a good solution for fast data transfer? Fast Ethernet is an excellent option. It is readily available and affordable over fiber optic connections nationwide. Let’s take a closer look at how FastE works and how it fits into your bandwidth strategy.

Chances are that you’ve been using Fast Ethernet or FastE for years on your own network. Fast Ethernet is another name for 100 Mbps Ethernet. Standard Ethernet is 10 Mbps, Fast Ethernet is 100 Mbps and Gigabit Ethernet is 1,000 Mbps. Network Interface Cards (NICs) in every device with an Ethernet jack, also called a port, support one or more of these Ethernet speeds. For instance, a 10/100 port supports Ethernet communications at 10 Mbps and also 100 Mbps. A 10/100/1000 port includes 10 Mbps, 100 Mbps and 1000 Gbps.

Nearly every computer, switch, router, modem, firewall, printer, NAS (Network Attached Storage) Disk and other network device supports 10/100 Ethernet. The 10/100/1000 spec is becoming more and more prevalent. In both cases, these devices support Fast Ethernet at 100 Mbps.

So, what doesn’t support Fast Ethernet communication? Many MAN and WAN connections come nowhere close. Clearly computer technology has accelerated faster than communications technology. Actually, support for 100 Mbps communication over long distances has been available for a long time. It’s just that you needed special interfacing and the cost was beyond what most businesses were willing to pay.

High priced proprietary data communications are a legacy of the telephone industry. Nearly every company has ordered a DSL or T1 line to be able to communicate between business locations and connect to the public Internet. The cost of those lines has fallen dramatically in recent years. Even so, the limited bandwidth is starting to become an uncomfortable constraint on even smaller operations.

What’s changed the game recently is the introduction of Carrier Ethernet services. Carrier means that you lease these lines from a service provider, a carrier, rather than stringing the wires yourself. Any connection that goes beyond your property is handled by carriers. At one time the only carrier available was the local telephone company. Deregulation has allowed other service providers, called competitive carriers, to enter the marketplace and compete on technology and price.

Carrier Ethernet is one of those competitive services, although you’ll now find it offered by incumbent as well as competitive carriers. What’s allowed Carrier Ethernet to grow by leaps and bounds is standardization by an industry group called the MEF or Metro Ethernet Forum. Any provider that meets the MEF standards will be compatible with Carrier Ethernet equipment and interconnection with other provider networks.

Fast Ethernet is one of the Carrier Ethernet services you can order in both metropolitan and long haul connections. These are known as MAN or Metropolitan Area Networks and WAN or Wide Area Networks. The difference is really one of scale. The MAN serves a local geographical area that includes a city and surrounding suburbs. The WAN joins cities and may cross state and national borders. International WANs use undersea fiber to link far-flung destinations worldwide.

Metro networks based on Ethernet rather than the older SONET technology are sometimes referred to as MEN or Metro Ethernet Networks. You’ll hear them referred to as MetroE networks. These networks are almost always based on fiber optic rather than copper lines. Increasingly, so are the connections to the network. It’s fiber all the way for FastE and above.

What kind of connection can you make to a MetroE network. One of the most popular is the Fast Ethernet or FastE connection at 100 Mbps. Another popular service level is GigE at 1000 Mbps. What’s just emerging now as a business service level is 10 GigE at 10000 Mbps or 10 Gbps.

Going Ethernet all the way through your network, across the metro or wide area networks and to another LAN at the far end, has some real benefits. The interface is trivially easy. Your handoff from the carrier is a standard fiber or copper Ethernet jack. You’ll also be able to order both point to point connections called E-Line and meshed multi-location connections called E-LAN. Don’t think that you are stuck with only the standard Ethernet speeds either. You can generally get many increments between 10, 100, 1000 and 10000 Mbps.

The biggest advantage of all is cost savings. You’ll pay far less per Mbps for Ethernet than other services. The difference is sometimes half as much for Ethernet as SONET or other telecom services. This easily allows you to afford the bandwidth you really need for today’s communication-intensive applications such as cloud services.

Is your business bandwidth constrained? No need to be stuck at low copper technology speeds when fiber connections to high bandwidth metro and wide area networks are available and affordable. Check now for bandwidth services and prices available for your business location.

Long Range Ethernet Goes Beyond The LAN

Ethernet has grown from its inception in the 1980s to become the dominant Local Area Network (LAN) protocol. The big technical advance in this decade is the rise of Ethernet as a Metropolitan Area Network (MAN) and Wide Area Network (WAN) protocol of choice. It’s likely that when this process is complete it will be Ethernet as far as the eye can see. What is it that is driving this move to Ethernet everywhere and what advantages does it offer for your business?

What’s solidified Ethernet in the LAN for now and the foreseeable future is economy of scale. Nearly every piece of networking gear you can buy has standard copper or fiber Ethernet connectors. The most popular of these, of course, is the RJ-45 connector. You recognize it immediately without even having to look at the legends near the connector or any equipment manuals. Within the organization, everything plugs into Ethernet sockets to connect to the network.

The big disconnect occurs when you want your traffic to leave the confines of your building or campus. You might find a contractor who will interconnect businesses within an office or industrial park, but that’s about as far as you can install private network cable. You might get a little farther with optical line of sight or microwave wireless transmissions. However, if you want to be able to connect to the Internet or establish a private network around town or across the country, you need to use a telecom carrier.

The first carriers were local telephone companies. Today’s ILECs or Incumbent Local Exchange Carriers offer far more than telephone service. They have twisted pair copper bundles running to every home and business. They also generally have fiber optic cabling for their own use and to lease to major businesses. These services have their own unique protocols invented by the telephone industry to transport phone calls. Copper data transmissions use T-Carrier, such as T1 or T3. Fiber optic transmissions use SONET (Synchronous Optical NETwork) standards, such as OC-3, OC-12 and OC-48.

How do you connect an Ethernet protocol network to a T-Carrier or SONET protocol carrier? Very carefully! You need what’s called a protocol converter. This is generally in the form of a plug-in module for your router. The conversion process changes the signals and timing of one protocol to another so that they can exchange digital data.

This conversion process has worked well for decades, so why change it? The reasons are efficiency, new services and cost.

What’s happened is that new competitive carriers have emerged. These carriers don’t have the legacy of telephone company standards to support and have embraced IP networking for their regional and nationwide fiber optic networks. Since your network runs Ethernet and their network runs Ethernet, it seems logical to interconnect them via Ethernet.

The standardization of what’s called Carrier Ethernet by the industry standards group, Metro Ethernet Forum (MEF), has opened the door to handing off network traffic from business to carrier and between carriers within the Ethernet protocol. Getting rid of the conversions makes the process more efficient. More importantly, it has made possible services that you can’t get on the old telco networks. Notably, these are E-Line or Ethernet Line service and E-LAN or Ethernet LAN service. The difference is that E-Line connects two locations and E-LAN can connect multiple locations in a mesh network.

By keeping everything as Ethernet, it is now possible to bridge LANs at two or more locations at the layer 2 level using Ethernet switches. Essentially, you take all these individual LANs and join them to form one much larger corporate LAN.

Another advantage of using Carrier Ethernet to transport your traffic is that it was designed from the beginning to be easily scalable in much finer increments than the telco protocols. You install a port, say 100 Mbps, 1000 Mbps or 10 GigE, that sets the maximum bandwidth of your connection. However, you don’t need to order the highest speed that the circuit will support you can start off at a quarter or half of that and then increase your bandwidth when needed. Often, all that is needed is a call to your Ethernet service provider. The change can be implemented in hours or days because there are no equipment swaps that need to be made.

Finally, Carrier Ethernet has a significant cost advantage compared to bonded T1, T3 (DS3) bandwidth and SONET services. On a per-Mbps basis, Ethernet often costs just half of what you pay for the older technologies. That mean you can save money for the company on your next telecom contract or double your bandwidth for the same budget.

Does long range Ethernet meet your needs? A good way to find out is to get competitive quotes for both traditional bandwidth and Carrier Ethernetservices and compare cost and features.

20 to 100 Mbps Metro Ethernet

Companies often lease telecom lines for dedicated access to the Internet or for Wide Area Network (WAN) connections. These WAN links can span cities, states or even international borders. But what if all you want to do is connect two or more locations in the same town? What you need then is a MAN or Metropolitan Area Network.

The newest type of metropolitan network is called Metropolitan Ethernet, Metro Ethernet or Metro E. What’s exciting about Metro Ethernet is the wide range of bandwidth levels available, the ease and speed of increasing bandwidth as needed, the availability of new standardized services, easy LAN interfacing and the cost advantage of Ethernet compared to traditional telecom services.

A metro area network is exactly what it sounds like. It is a network that covers a particular city or metropolitan area consisting of the city, suburbs and any important industrial or office parks. Metro networks are careful to be accessible by businesses that are likely users of their services. This is strictly a commercial service, not for residential or home office users.

Unlike the Internet, there is no public access to Metro Ethernet Networks (MEN). They are privately operated by a network service provider who grants access only to paying customers. Even those customers can only access their own data. The network operator provides enough resources so that customers are unaware there is anyone else using the network.

What type of services can you get? Two of the most popular are E-Line and E-LAN. Both are standards established by the Metro Ethernet Forum (MEF), an industry trade group. An big advantage of standardization is that you know what you are ordering regardless of service provider or hardware implementation.

E-Line or Ethernet Line service is the familiar point to point dedicated line connection. A EVC or Ethernet Virtual Connection is established between the UNIs (User Network Interfaces) at two locations. Your Ethernet packets travel back and forth on this EVC. It’s virtual because you don’t have a dedicated set of wires between the locations for your use only. Instead, your EVC shares the Metro Ethernet Network with other user’s EVCs.

The other popular service is E-LAN or Ethernet LAN service. This is a multi-point networking service that connects 3 or more business locations in a meshed network. This replaces propriety corporate networks created using multiple T1 lines or other dedicated bandwidth connections in a star network arrangement.

What makes E-Line and E-LAN so popular? First, you can get the connectivity you want at a lower cost than using older telecom technologies. Second, it’s Ethernet just like the Ethernet you run on your company LAN. For MAN applications, this is called Carrier Ethernet. Because it’s Ethernet, your connection to the MAN is via a standard copper or fiber Ethernet connector. There are no special interface cards needed. By tying your locations together via Carrier Ethernet, you can choose to use layer 2 switching to create a bridged LAN that includes all of the networks at your various locations around town.

Carrier Ethernet is designed to be easily scalable. You can get connections using copper technology called EoC for Ethernet over Copper in the range of 2 Mbps on up to about 45 Mbps. Fiber technology called EoF for Ethernet over Fiber covers you from 10 Mbps up to 10 Gbps. This includes the popular range of 20 to 100 Mbps that many companies desire. Note that if you have a 100 Mbps Ethernet Port installed, you can start off with 20 Mbps service and scale up to 100 Mbps with only a phone call to your service provider. If you have a Gigabit Ethernet Port installed, you can get any bandwidth up to 1,000 Mbps.

Could your company benefit from 20 to 100 Mbps Metro Ethernet? If so check prices and services for Metro Ethernet Networks available for your business locations.



Note: Photo of city lights courtesy of Wikipedia Commons.

Optical Ethernet Connections To The World

Fiber optic connections are becoming common for network operations. How about for WAN (Wide Area Network) connections? Are you limited to what’s available on Ethernet over Copper or forced to abandon Ethernet for an unrelated telecom protocol?

Not any more. Ethernet connections have become established and far more common than you might think. This does include the lower bandwidth options over twisted pair copper, but it also includes high speed services over fiber optic connections. With fiber, you can pretty much have all the bandwidth you care to pay for. That payment may also be a lot less than you think.

Ethernet over FIber or EoF offers a set of high bandwidth services that meet the specifications of the Metro Ethernet Forum (MEF). All together, these standardized services are referred to as Carrier Ethernet as distinguished from Ethernet that runs on a local area network. These two types of Ethernet are highly compatible. Carrier Ethernet runs in the switched configuration only. There is no CSMA/CD capability. This is actually the way most networks run today. Nearly all use switching and routing to gain full duplex performance. Carrier Ethernet also has provisions for OAM or Operations, Administration and Maintenance that is needed by carriers to ensure that the link keeps working reliably.

There are some real advantages in having standardized services available that meet the MEF requirements. Like standardized equipment, you know what you are getting and that it will interoperate or work with similar services from other vendors. Part of the rapid expansion of Carrier Ethernet is due to the ability of exchanging traffic between service providers through an Ethernet NNI or Network to Network Interface. All carriers have limited fiber optic assets and would be constrained by their own service footprints if they couldn’t interconnect with other carriers. By entering into traffic sharing arrangements, it is possible for carriers to span the nation and the globe.

Two of the standard Ethernet services you may be interested in are E-Line or Ethernet Line and E-LAN or Ethernet LAN service. E-Line is the equivalent of the point to point private line available with T-Carrier and SONET telecom services. E-LAN is something different. This is a multipoint connection that can be used to network multiple business locations as if they were on the same bridged LAN. Everything operates at layer 2 so that switched Ethernet is available across town or to the other side of the globe.

Carrier Ethernet connections are through ports on a UNI or User Network Interface. Typical fiber optic port speeds mirror standard LAN speeds of 100 Mbps Fast Ethernet, 1000 Mbps GigE and 10,000 Mbps 10GigE. This differs a bit from standard telecom services that have unique circuit interfaces for T1, DS3, OC-3, OC-12, OC-48, etc. Many carriers find it easy to install Gigabit Ethernet ports as a standard practice and then rate limit the bandwidth to the amount ordered by the customer.

The port itself will accept traffic at any speed up to the limit of the port capability. Let’s say that’s 1 Gbps. Since you have only ordered and are paying for 150 Mbps bandwidth, that’s what you’ll have on your Ethernet Line or LAN service. The real beauty of this system becomes apparent when you need to upgrade from 150 to 500 Mbps. All you need to do is call your service provider and notify them of the change. They’ll adjust the rate limit to increase your bandwidth up to the 500 Mbps level. There is no physical change to any of the equipment in the signal path. That means the change can be implemented in a matter of days or hours rather than weeks or months.

Ethernet bandwidth services often have many bandwidth increments available. You don’t have to jump from 150 to 500 Mbps. You may be able to get 200, 250, 300, 400 or some other increment offered by the carrier. Most carriers have a fine layer of granularity available because it’s all done in software.

Can you make good use of fiber optic Ethernet connections to the Internet or other business locations? If so, get prices, features and bandwidth levels available for optical Ethernet connections to your business location.



Note: Photo of Earth from space at night courtesy of NASA on Wikimedia Commons.

1 Gbps Point to Point Ethernet Connection

With WAN bandwidth requirements increasing as businesses move to the cloud and become more involved with bandwidth intensive activities such as video and big data, it is not uncommon anymore to be requesting 1,000 Mbps connections. A popular match for this requirement is a 1 Gbps Ethernet or GigE point to point connection. Let’s take a look at what’s involved and your options for Gigabit Ethernet service.

Ethernet is the standard protocol of the LAN. Most network interfaces run at 10 Mbps, 100 Mbps, 1000 Mbps or 10 Gbps. Many standard network devices support multiple speeds, typically 10/100/1000 Mbps. It is only logical to want to extend the LAN through the WAN and to another LAN somewhere else. The way to avoid speed bumps that cause network congestion while avoiding over-provisioning and overpaying for WAN bandwidth is to match your LAN to your WAN. That means standard LAN speeds and protocol.

Fortunately, this has all been figured out by the Metro Ethernet Forum (MEF), an industry group that sets standards for interoperability among vendors. They have created the standards necessary to take LAN Ethernet and transport it through WAN connections. In the WAN, this is called Carrier Ethernet.

It all starts and ends with a User Network Interface or UNI. This is a “port” provided by the carrier or service provider and installed at the user location or locations. The UNI is designed to run at standard LAN operating speeds of 10 Mbps, 100 Mbps, 1 Gbps or 10 Gbps. That doesn’t mean that you are limited to one of those service speeds. The installed UNI defines the upper limit to the bandwidth it will support. The carrier rate limits the actual speed of the service to match the bandwidth you are paying for. That could be 20 Mbps, 75 Mbps, 450 Mbps or some other value. There are typically many increments to choose from so you only have to pay for the bandwidth you really need.

There is a big advantage to this arrangement. Not only are you not stuck with a service that is too big or too small for your needs, but all the hardware is set up to support the port speed of the UNI. The rate limiting is a software function that can be changed quickly by the service provider with a few keystrokes into their system. That means that you can call up and request a bandwidth increase at any time and have it available in days, maybe hours of your request. The carrier will enter the change and adjust your billing to match. Compare that to traditional telecom service that require truck rolls to install new equipment and perhaps pull new wiring. If your UNI supports 1 Gbps, you won’t need any hardware changes until you want to go above that speed.

The actual transportation takes place on an Ethernet Virtual Connection or EVC. The EVC provides point to point connectivity between designated UNIs and prevents data transfer between sites that aren’t part of the same EVC. The popular Ethernet point to point service is known as EPL or Ethernet Private Line. It is a direct replacement for TDM private lines.

Another interesting feature of Ethernet UNIs is that they can handle multiple EVCs. That may seem a little strange compared to typical telecom UNIs that connect physical wires and transport a single Point to Point (PTP) line service. Each EVC can be considered a separate private line. Multiple EVCs delivered over a single UNI is called EVPL or Ethernet Virtual Private Line service. One popular topology is a hub and spoke arrangement where a headquarters location is connected to multiple branch offices using EVPL. Only a single physical UNI is needed at HQ to support all the private line spoke connections.

Is your operation ready for higher bandwidth WAN service? Find out how little it now costs to support 1 Gbps Point to Point Ethernet Connections using EPL and EVPL.

New Carrier Ethernet Services Offered by CE 2.0

Carrier Ethernet has come out of nowhere over the last few years to be the copper and fiber connection service of choice. There are a lot of good reasons why companies are switching to Ethernet bandwidth service in droves. Now they’ll have even more choices since the Metro Ethernet Forum (MEF) has introduced Carrier Ethernet 2.0.

Did you know that there was a Carrier Ethernet 1.0? That’s the moniker of the original set of standards that defined Carrier Ethernet. It wasn’t called that until these new services were introduced and the MEF needed a term to describe the existing standards. Not to worry. Both CE 1.0 and CE 2.0 are compatible. What Carrier Ethernet 2.0 does is expand the set of defined standardized Ethernet services from 3 to 8.

What are these new Ethernet services and what can they do for your company? Let’s take a look at what we have now. The role of the MEF has been to extend the LAN Ethernet standard that has become almost universal for interconnecting computer systems in-house so that it will work for Metropolitan Area Networks (MAN) and Wide Area Networks (WAN). Part of getting Ethernet on telecom carrier networks has been to standardize service offerings so that they will be similar and compatible from network to network. That’s led to three popular standardized Ethernet services. These are E-Line, E-LAN and E-Tree.

Ethernet Line (E-Line) service is the familiar point to point dedicated private line. Only your traffic exists on this line service and it only connects two locations. Companies often buy private lines to connect a remote data center, branch office, factory or warehouse back to headquarters. T1 lines are popular on the low end (1.5 Mbps), DS3 for modest bandwidths of 45 Mbps, and SONET fiber optic services for higher bandwidth requirements. Ethernet Line Service does all of this as well or better. E-Line is also used for dedicated Ethernet Internet Access connections.

E-Line offers several big advantages over legacy telecom private line services. First, it is Ethernet. That means it is inherently compatible with your existing local network. Simply connect your network edge router to the Ethernet connection installed by your service provider and you are in business. There is no need to worry about any fancy protocol conversions to make things work. E-Line bandwidths are far more scalable than other solutions. You can get just about any bandwidth level you desire, up to the maximum capacity of the installed port. You only need to make a hardware change if you need a faster port. Finally, Ethernet is less costly than T-Carrier or SONET on a per Mbps basis. It is not uncommon to get twice the bandwidth for the same cost as you are paying for a legacy service.

Ethernet LAN (E-LAN) service is a multipoint service designed to connect multiple business locations. This is a mesh network, similar to your LAN. All locations can communicate with each other easily. Ethernet LAN is just that. It creates a bridged connection among three or more geographically dispersed LANs.

Ethernet Tree (E-Tree) service is a hub and spoke network like the one many companies built themselves to connect a HQ location to many branch offices or franchises. Tree structures are also used for broadcast distribution. All locations communicate with the hub, but not each other. Traffic between leaves in the tree network are managed by the central hub.

E-Line, E-LAN and E-Tree are the three standardized Carrier Ethernet services of CE 1.0. The service types for each of these are doubled in CE 2.0 to include private and virtual private variants.

Ethernet Access (E-Access) is something new with two service types created for CE 2.0. This is something for wholesale access services, where a larger network sells Carrier Ethernet services to a smaller network through an Ethernet Network to Network Interface (ENNI). The two services are Access EPL (Ethernet Private Line) and Access EVPL (Ethernet Virtual Private Line). One of the additional features of CE 2.0 is the addition of a standardized ENNI so that networks can connect worldwide and offer Carrier Ethernet with an enormous service footprint.

Is your company looking at expanded or alternative interconnection services? This would be a good time to get a fresh set of Carrier Ethernet quotes for one or more business locations. The level of competition among Ethernet carriers is intense, with more services at lower prices being provided in nearly all markets compared to even a year ago.

Your Ethernet Connection To The World

It’s a given that you need to connect your business location to the outside world to reach your own geographically separated business locations and to reach anyone, anywhere, on Earth. There are various protocols that will get you this connectivity. The most popular is quickly becoming Carrier Ethernet service. Let’s see why.

Carrier Ethernet is an extension to the switched circuit Ethernet protocol that is nearly the universal for Local Area Networks (LANs). You know that there is a distance limitation to LAN Ethernet networks, especially for those running on Cat 5e/6 twisted pair copper wiring. How is it that Ethernet can now reach across town, to the other side of the country and around the world?

You can thank the Metro Ethernet Forum (MEF) for setting the standards that make long distance Ethernet possible. The MEF is an industry alliance of over 175 organizations who have a vested interest in Carrier Ethernet. Because carriers and manufacturers have agreed to work within these standards, it is possible to have interoperability among Carrier Ethernet systems worldwide.

What’s different about the MAN and WAN versions of Ethernet is that they are transported rather than running natively on the copper or fiber cabling. Technologies that enable this are Provider Backbone Bridges (PBB), Provider Backbone Bridge Traffic Engineering (PBB-TE), Provider Backbone Transport (PBT) and Carrier-Ethernet Transport (CET). Connectivity-Fault Management (CFM-OAM) technology adds operations, administration and management features needed to operate metro and long haul communications networks.

Note that the term Carrier Ethernet applies to Metropolitan Ethernet, also called Metro Ethernet, as well as longer haul networks that go beyond the immediate metropolitan area that is the domain of Metropolitan Area Networks (MAN). That’s because metro and wide area networks are more alike than different. They all involve use of a common carrier to transport the signal rather than private ownership of an in-house local area network.

The MEF has standardized Carrier Ethernet services regardless of the transport mechanism. E-Line is the familiar private point to point line service that is popular with T1, DS3 and SONET telecom services. E-Line gives you a direct ethernet connection between two Ethernet ports located across town or at any distance. E-LAN, or Ethernet LAN Service, is a multipoint to multipoint mesh network that covers multiple locations. These could be branch offices or franchise locations. E-LAN can bridge your multiple site LANs so that they act like one larger network.

Another service is E-Tree which is a point to multi-point service, not meshed. The center or root locations can communicate with any of the remote or leaf locations, but those leaf locations cannot directly communicate. They have to route all traffic through the roots that may or may not pass it on. This is similar to the proprietary star networks that companies have deployed to create their own private wide area networks.

Ethernet can be carried over twisted pair copper as EoC or Ethernet over Copper. It can also be transported over T1 (EoDS1) or DS3 (EoDS3) to take advantage of existing infrastructure. Ethernet can also be provided over fiber optic networks including legacy SONET/SDH and the newer Ethernet over Fiber (EoF) running on native IP networks. MPLS networks can easily transport Ethernet services as pseudowires using MPLS label switched paths. This expands the offerings to include Virtual Private Wire Service (VPWS) and Virtual Private LAN Service (VPLS).

In addition to the availability of standardized Ethernet services over MAN and WAN distances, Carrier Ethernet also offers the advantages of easy interfacing, granular scalability with nearly any bandwidth level available, and considerably lower cost than traditional telecom services. It is not unusual to get twice the bandwidth for the same price or cut your bandwidth costs in half by switching to Carrier Ethernet services.

Is your company looking for a bandwidth upgrade or to expand connectivity beyond your current network? Perhaps you’re curious to see if you could realize a considerable cost savings? If so, get pricing and options for Carrier Ethernet solutions now.

What is an Ethernet Connection?

When we think of connecting to the outside world, what comes to mind is traditional telecom services. Those include POTS and PRI telephone lines for voice and T1, DS3 and OCx SONET for data. A newer technology that deserves a closer look is Carrier Ethernet. It’s Ethernet in the WAN to match up with Ethernet on the LAN.

The idea of extending an Ethernet connection from your building or campus to the Internet or another facility on the other side of the country might seem a bit odd at first. After all, the legacy telecom carriers have pretty much owned that space for over a century. That’s all changing fast. New competitive service providers are coming into the bandwidth marketplace without the history or traditions of using telco standards to define their networks. That frees them to take a “blank sheet” look at what a Wide Area Network (WAN) should be, how it should be priced and what services it should offer.

Let’s say, for the sake of discussion, that the WAN starts where the LAN leaves off. I know that there’s often something called the MAN or Metropolitan Area Network in-between. MAN and WAN technologies are more alike than different. It’s mostly a matter of scale. While the MAN tends to cover a city and perhaps suburbs, the WAN has no geographical limitation. WAN services can be regional, national or even international.

Now let’s consider Ethernet WAN connections. Ethernet is the packet switching protocol now nearly ubiquitous on Local Area Networks. It wasn’t always that way. Even a few decades ago, there were competing standards such as Token Ring. Ethernet has become so popular now that the economy of manufacturing scale makes it more economical to implement than other standards. Ethernet has taken over the LAN, but it is just starting to make inroads on the WAN. In the coming decades, we may see a repeat of Ethernet dominance for local, metropolitan and wide area networks.

The Metro Ethernet Forum (MEF) has done the standardization work necessary to establish what’s known as Carrier Ethernet. This frees LAN Ethernet from its distance limitations so that it can connect from your building to the other side of the world. The MEF has also standardized Ethernet services so that the Ethernet you get from one carrier is the same as you get from another. This makes competitive bidding possible, driving down the cost for the buyer. It also enables carriers to extend their service footprint by interconnecting with other carriers through Ethernet Network to Network Interfaces (E-NNI).

WAN Ethernet has some definite advantages over the legacy telecom services we’re used to. First is the interface. If you want to connect to a T1 line or DS3 service, you need a specialized piece of equipment or a very specific plug-in module for your router. You can’t just take an Ethernet patch cord and connect your edge router to the carrier’s “smart jack.” The protocols are completely different. However, you can do exactly that with an Ethernet connection. Most often the carrier provides a common RJ-45 jack or a managed router that you simply patch into.

Second is services. You can order Ethernet Line Service to mimic the point to point or last mile dedicated Internet connections that you have with T1 or DS3. You can also order Ethernet LAN service. That’s a multipoint networking service that ties together multiple business locations. You don’t need to mess around with running individual private lines to each location. They all connect through the Ethernet LAN service.

Unlike T-Carrier and SONET services, Ethernet is highly scalable. In other words, you can get a wide range of bandwidths delivered to your installed Ethernet port. That will prove valuable if business suddenly increases and you need to increase your WAN bandwidth to handle the traffic. A change in bandwidth level can often be handled with a telephone call to your provider, with no need wait for equipment to be replaced.

Finally, Ethernet WAN connections have a cost advantage. It’s not uncommon to get twice the bandwidth for the same price as a T1 line. At higher speeds, the cost savings is even more dramatic.

You owe it yourself to at least compare services and pricing for Ethernet WAN connections to what you have now to see if you may be missing out on cost and performance benefits. Ethernet WAN is available over both twisted pair copper and fiber optic cabling.

What is Ethernet Service?

Carrier Ethernet services for business are becoming more and more popular. If you’ve been hearing about Ethernet service and wondering if it makes sense for your company, here’s what it’s all about.

Ethernet is the most popular LAN protocol by far. It’s hard to remember that not that many years ago there were all sorts of competing network protocols. Now switched Ethernet is almost universal. Something similar is underway with telecom services. We’re in the process of changing over from switched circuit technologies popularized by a century of telephone development to packet switched networks more compatible with computing devices. As you might suspect, Ethernet is making its bid to become the universal protocol of metropolitan and long haul networks.

Ethernet originated at Xerox PARC as a short distance communications technology to interconnect computing equipment. It was intended for use within an office or building. Communication farther than this required interface to telecom technologies, such as T-Carrier, SONET and Frame Relay.

Over the years, Ethernet has been extended and improved with the introduction of switching to eliminate the problem of collisions and fiber optics to increase network speeds. What has remained the same until recently is that connection to the outside world required conversion to a different set of protocols and back again at the other end. This is the last frontier of Ethernet networking that is now being addressed by Carrier Ethernet.

What is Carrier Ethernet? It’s the same as Ethernet, only extended to work over long distances on a telecommunications network. Carrier Ethernet standards have been developed by the Metro Ethernet Forum (MEF), an industry standards body. By introducing MEF compliant Ethernet services, carriers can be assured that their services will work with readily available customer and provider interface equipment and that network providers will be able to exchange traffic. They do that through an Ethernet Network to Network Interface (E-NNI).

Two of the most popular Ethernet services are E-Line or Ethernet Line Service and E-LAN or Ethernet LAN service. E-Line is a point to point dedicated line service that replaces traditional private lines such as T1, DS3 and OC-3. One end of the line can be connected to an Internet Service Provider give you Ethernet Internet service. In addition, E-LAN offers a many to many or meshed connection so that numerous business locations can be tied together on one large Ethernet network.

How about bandwidth? There are two physical layer options available. They are Ethernet over Copper (EoC) and Ethernet over Fiber (EoF). Ethernet over Copper is a direct T1 line replacement. It uses the same twisted pair copper telco wiring that T1 is provisioned over. Multiple pairs are employed to increase line speed. Popular EoC speeds are 2 Mbps, 3 Mbps, 5 Mbps, 10 Mbps 15 Mbps and 20 Mbps. Copper based Ethernet is distance sensitive, so the closer you are to the central office, the higher speed you can obtain. It’s not uncommon to get 25 Mbps, 50 Mbps, 100 Mbps or higher bandwidths for connections under a mile.

Ethernet over FIber picks up where Ethernet over Copper leaves off. Bandwidths from 10 Mbps to 10 Gbps are readily available, meeting the needs of just about any business.

In addition to easy interfacing and options such as E-LAN, a major draw of Carrier Ethernet services is their reduced cost. It’s not uncommon to get twice the bandwidth for the same money with Ethernet versus other telecom services. Also, that bandwidth is more easily scalable. The carrier equipment design makes it easy and fast to increase and decrease bandwidth as needed, up to the maximum speed of the installed port.

Are you interested in what Carrier Ethernet can do to support your business? If so, get instant online pricing for Ethernet services up to 1 Gbps and prompt quotes for other services to 10 Gbps.



Note: Ethernet patch cords photo courtesy of Wikimedia Commons.

Metro Ethernet vs MPLS Networking

In addition to dedicated Internet access, many companies also need point to point private lines and/or multipoint network connections. The classic way to accomplish this has been to lease private lines to create your own wide area network setup. There are two other methods available that can give you the same results for considerably less cost.

Metro Ethernet service has been seen as a way to get point to point connections in town at a lower cost than leasing dedicated line services, such as DS3 or OC3. This service is called E-Line or Ethernet Line. It’s is standardized by the MEF (Metro Ethernet Forum) so you can compare E-Line services from multiple vendors and know that you are getting the same product.

What’s the difference between ordering an E-Line connection at 50 Mbps versus a DS3 dedicated line at 45 Mbps? When you order a dedicated line, you can envision having a pair of wires going from your headquarters, through a cross-connect at the telco central office and then out to your branch office. That’s probably true for a T1 line provisioned on two twisted copper pair. When you get into DS3 and higher bandwidths, your connection will probably be carried via SONET fiber optic service using an add/drop multiplexer. Along the way, your signal will be traveling with many other who share the same fiber strand.

Here’s what’s important: Unless you actually go out and construct or lease the copper or fiber transmission medium, you are using a shared or multi-tenant service. It’s true with Metro Ethernet and MPLS Networks. It’s also true with dedicated line services. The difference is that MPLS and Metro Ethernet are packet switched networks while T-Carrier and SONET services are circuit switched. With circuit switching, the circuit is used only for your traffic on a single path that is “nailed up” for the time you hold the lease. With packet switching, other traffic can share common paths through the network. That does two things. It lowers the price of the service and it makes some additional services possible.

Metro Ethernet has both an Ethernet Private Line and Ethernet Virtual Private Line service available. The virtualization means that you only need to install one Carrier Ethernet port to have connections with two or more locations. The actual physical line is shared among your own traffic. You may have ten or more branch offices, retail stores or other locations in town. With EVPL you can have point to point connections to many locations coming in through one UNI (User Network Interface).

Here’s another service you can get with Metro Ethernet. It’s called E-LAN or Ethernet LAN service. This is a meshed network that lets many locations all communicate without going through a single point. E-LAN is popular for interconnecting a company’s many independent LANs in the same geographical area. This can be done at the layer 2 level so that the entire network looks like one giant bridged network.

Interconnecting multiple locations is also the domain of MPLS or Multi-Protocol Label Switching networks. Many of these have regional, national or even international service footprints so that all of your far flung locations can interact on the same network. MPLS may be the solution of choice for covering geographical areas larger than a single city and its suburbs. MPLS can also be used to create point to point connections for only two locations. When those locations are located on opposite coasts or in different countries, MPLS can be a better deal than Ethernet Line service or point to point dedicated line services.

Since Ethernet and MPLS services overlap to some extent, what criteria do you use to make a choice? I’d recommend getting price quotes for these, plus dedicated lines, and comparing the total lease cost for the same bandwidth and other requirements. You can get networking bandwidth quotes from multiple service providers quickly and easily using the GeoQuote tool. In fact, many line services to 1 Gbps quote automatically online.

Ethernet Private Line Service With Granular Bandwidth

Our experience with private line service has always been with point to point dedicated telecom services, such as T1 lines, DS3 bandwidth, and OC3 fiber optic connections. Now there’s a new service available that gives you all the advantages of traditional private line services with some improvements and better pricing.

This new network service is called Ethernet Private Line Service, or E-Line. That’s not just a clever marketing term. It’s the official name of the service as defined by the MEF or Metro Ethernet Forum. In other words, E-Line is a standardized Carrier Ethernet service with enterprise level performance in metropolitan and long haul networks.

Let’s take a look a what we expect from a private line service and see how Ethernet Private Line Service measures up. A typical private line is a permanent point to point connection. For that reason, it is sometimes referred to as a “nailed up” connection to differentiate it from a temporary switched service connection such as a telephone call. The private line is truly private. The company that leases the private line expects to have full time exclusive use of the circuit. If they are not sending traffic at the moment, the line idles while it waits for the next burst of traffic.

A very typical implementation of private line service is the T1 point to point connection. A T1 line offers 1.5 Mbps of bandwidth in both directions. It behaves as an empty pipe connecting two locations for voice, data, video or whatever digital service is needed. T1 point to point lines are used to connect branch offices to headquarters, transmit medical images from a clinic to a hospital, or even carry program audio from a radio station studio to the transmitter site. A special arrangement called a “tie line” allows you to connect to PBX telephone systems together.

Higher bandwidth uses of point to point telecom lines include video transport for production and television broadcast, connecting business information systems, engineering simulation and overnight file backups to remote data centers. You can usually get as much bandwidth as you need for your application. It’s just a matter of price.

What makes private line services expensive is that they must be specifically engineered to meet a particular need. If the link is only across town, it may stay within the footprint of one carrier. But if you want to connect two locations in different states or on opposite coasts, your packets may traverse many different networks to get from point A to point B. That runs up the lease cost and may take a considerable time to install. If you want to change the amount of bandwidth once your connection is in place, the process has to start all over.

Qwest, a major player in the business bandwidth marketplace, is offering a private line service based on the latest technology. They already have in place a core MPLS (Multi Protocol Label Switching) network based on fiber optics using DWDM or Dense Wavelength Division Multiplexing. That gives them the ability to offer 100% committed bandwidth and traffic engineering while being fully MEF certified.

The advantages of implementing E-LIne over a pre-provisioned MPLS 10 GigE backbone network are that implementation to connect your locations can be much faster and you can select from a huge range of bandwidth options between 5 Mbps and 1,000 Mbps. This is called granular bandwidth, something difficult or impossible to obtain with traditional telecom services. Those bandwidth options are scalable in the sense that you can generally change your bandwidth level quickly and easily with a call to your service provider.

Qwest calls their new low-latency Ethernet Private Line solution “Qwest iQ E-Line.” It allows for point to point or hub and spoke connections within or between any of their 16 markets that include Atlanta, Boston, Chicago, Dallas, Denver, Houston, Indianapolis, Kansas City, Mo, Los Angeles, New York, Newark, Philadelphia, Phoenix, Sunnyvale, Tampa and Washington DC.

Are you in the market for high performance point to point network services or would you just like to see if you can get more bandwidth for less money? Check pricing and availability for Ethernet Private Line Service now.



Note: Photo of network switches courtesy of Wikipedia Commons

What is Metro E?

Metro E is short for Metro Ethernet, a popular and rapidly expanding network connection service.

Metro E is Ethernet like the protocol you run on your Local Area Network (LAN). But it has been standardized and adapted to also run on a Metropolitan Area Network (MAN). The organization behind this standardization is the MEF or Metro Ethernet Forum. It’s an industry standards organization dedicated to Carrier Ethernet.

Here’s why you should you know about Metro E and seriously consider using it for your business connectivity. Metro Ethernet services are better suited to today’s packet switched networks than the legacy telecom services such as T1. Connectivity is almost trivial. Ethernet is what nearly all networks are running as a protocol. The connection from your service provider is an Ethernet jack. That’s it. No need for special conversion equipment to connect to your switches and routers.

Metro E is supported by a number of incumbent telecom carriers, plus many new competitive service providers that have no connection to legacy telephone services. Nearly all of these new competitors have built their networks on fiber optic lines and IP or MPLS core networks. Metro Ethernet services are easily transported on these networks. The result of all this competition is that Metro E prices are often considerably lower per Mbps than T1, DS3, or OCx bandwidth. It is not uncommon to get 3 Mbps Ethernet service for the same price as 1.5 Mbps T1 and similarly reduced costs at higher bandwidths.

Like other telecom services, Metro Ethernet can be set up to provide point to point connectivity between two business locations. Unlike older technologies, Ethernet Line Service can be configured as a layer 2 connection between two LANs, effectively connecting them to make one larger LAN. Ethernet LAN Service, or ELAN, can do the same thing for multiple locations. It’s a high performance and cost effective way for businesses to tie-together branch offices, factories, headquarters and warehouses. It works just as well for hospitals and their related medical centers in the area.

Another use for Metro E is as an access network connection. Metro E links are used as last mile connections to larger MPLS networks for national or worldwide service. They are also used as dedicated broadband Internet connections for small, medium and large organizations.

Metro E bandwidth tends to be easily scalable. Service at 3 Mbps is a popular entry level bandwidth. Many companies move up to 10 Mbps, a standard LAN speed. Fast Ethernet at 100 Mbps, 1000 Mbps and 10 Gigabit Ethernet are other standard LAN speeds that are also supported by Metro E providers. While these speeds are popular, most providers offer incremental bandwidths between each of these levels. You can order any bandwidth up to the limit of your installed Ethernet port. Start with what you need now and easily upgrade as the need arises.

One thing you should know is that the Metro in Metro E generally means just that. This service is available in most metropolitan areas, but rarely in rural areas. It may be possible to get Ethernet connectivity over T1 lines, called EoDS1. This is a way to extend service to include remote business locations.

If Metro E the right service for your business situation? A quick way to find out is to request a list of Metro E service levels and prices for your business location or locations.

Ethernet Providers in Hot Competition

Bandwidth demand is up, but budgets aren’t. One new technology that addresses that situation is Ethernet WAN connections. They’ve become a fierce competitor to legacy T1 lines and, in many locations, it’s Ethernet provider vs Ethernet provider fighting “tooth and nail” to make the best offer.

Why all the hoopla about a protocol that’s been running on LANs for decades? It’s the standardization of Ethernet as a carrier technology by the Metro Ethernet Forum (MEF) that’s catapulted Ethernet services from LAN to MAN to WAN. In literally a matter of a few years, Ethernet has gone from a niche product to the transport service of choice.

Why? Ethernet has some big advantages over legacy technologies. First, it provides seamless connectivity between nearly all company networks and the outside world. No special interface circuitry or protocol conversion is required. Just plug into a standard Ethernet connector and you are good to go.

Second, Ethernet services are readily scalable. The same standard speeds found on Local Area Networks are supported. These are 10 Mbps Ethernet, 100 Mbps Fast Ethernet and 1000 Mbps Gigabit Ethernet. More and more, 10 GigE service is also becoming available. Most Ethernet providers also provide incremental bandwidths from 2 Mbps on up. There’s a huge gap between T1 at 1.5 Mbps and T3 at 45 Mbps. Ethernet services offer many intermediate speeds to choose from.

In fact, scalability is a big selling point for Ethernet. It’s common for companies to order an Ethernet port that can support their anticipated bandwidth needs, but then only buy the bandwidth they need right now. When business picks up, it’s fast and easy to have the service provider increase bandwidth right up to the capacity of the installed port.

Ethernet delivery comes in two primary forms. One is Ethernet over Copper, also called EoC. Multiple copper telephone pair are used to deliver this service within a few miles of the nearest carrier point of presence. Popular bandwidths are 3 Mbps and 10 Mbps, although you might get as much as 50 Mbps if you are near a carrier POP. EoC makes installation fast and easy. Nearly every business has a telco bundle with multiple copper pair available.

EoF or Ethernet over Fiber is used to provide the higher bandwidths of 50 Mbps and above. That includes the popular 100 Mbps and 1 Gbps levels. Larger corporations and organizations may opt for 10 GigE or even 40 Gbps and beyond.

What’s got service providers in hot competition is more than these benefits, however. The most attractive feature of Ethernet service is that it tends to be much less costly than traditional telecom services. Getting twice the bandwidth for the same price is common. At higher speeds and in areas of greater competition, the difference between Ethernet and other options can be jaw dropping.

Everyone’s inquiring about Ethernet for new service or as a replacement for their existing connectivity. Shouldn’t you at least take a look? Get multiple quotes for Ethernet service delivered to your business location or locations now.

Metro Ethernet For Your Business

Business users looking to expand a company network beyond their own building or campus have had to dig in and sort out the relative merits of DSL, T1, DS3, SONET fiber, ISDN and other communications standards. Everything but the Ethernet standard they are so familiar with on the local area network. No more. Now more and more businesses are gaining access to Metro Ethernet and saving a bundle in the process.

Metropolitan Ethernet, also known as Metro Ethernet or MetroE, is a wide area networking protocol that extends your LAN right out the door and across town. As a network administrator or management service provider, you no longer need to worry about limited bandwidths, protocol conversions or getting the right customer premises equipment to support your communications needs. Your Ethernet service provider installs a standard RJ45 networking jack. You plug an Ethernet cable into it and connect to the switch or router at the edge of your network.

Switch? Yes, it's Ethernet. That means you can use Ethernet switch ports to include a branch office across town. You can also connect your router to gain broadband access to the Internet via your Metro Ethernet connection. Perhaps you just want to standardize on Ethernet as your single networking protocol to link to branch offices, warehouses, suppliers, vendors, or franchisees across the country.

Nationwide? Yes. Metro Ethernet is the city-wide service for what is called Carrier Ethernet. The "carrier" designation means that this is a communications protocol with the scalability and reliability to be used by common carriers. Some of these carriers are traditional telcos who are updating their telephone-centric networks to transport Ethernet as well. Many others are competitive carriers without the telco legacy that have developed all-new state of the art fiber optic networks nationwide.

What about the underlying communications protocols that transport Carrier Ethernet? The beauty of this technology is that it has been designed to work with a wide variety of existing networks. They include native Ethernet based networks, MPLS networks based on IP transport, WDM or Wavelength Division Multiplexing fiber optic networks, and TDM networks including T1, T3, and SONET OC3, OC12, OC48 that were originally intended for telco trunking.

As a user, you needn't worry about what's at the core of the wide area transport network. Your connection will be a standardized Ethernet signal. The standardization group is the MEF or Metro Ethernet Forum, a alliance of 120 organizations including service providers and equipment manufacturers. Their mission is to : "...accelerate the worldwide adoption of Carrier-class Ethernet networks and services."

A major benefit of this move to Ethernet in the MAN (Metropolitan Area Network) and WAN (Wide Area Network) is getting away from the traditional pricing structure that always involved telephone companies for the last mile access. Instead, competitive carriers operate their own POPs or Points of Presence that function as their Central Offices. You may be able to contract with a single provider for both local and long haul carrier services... at a huge price bread from what you might expect.

Ethernet services typically start at 10 Mbps, the same speed as standard Ethernet in the LAN. Most providers also offer 100 Mbps and 1000 Mbps or Gigabit Ethernet service to match your network requirements. No longer are you stuck cramming your data through a narrow pipe just to get it across town or across the country. Your costs per Mbps are likely to be anywhere from 20 to 50% what you'd pay for equivalent bandwidth using traditional TDM (Time Division Multiplexing) services.

Is Metro Ethernet the right network service for your company? Find out now if your building is already lit for Carrier Ethernet service or there is a carrier POP nearby. If so, you could soon be enjoying the benefits of Ethernet end-to-end.