600 Mbps Ethernet vs OC12 SONET

Organizations requiring fractional Gbps bandwidth have traditionally turned to OC12 SONET fiber optic service. It’s still an excellent high speed option, but you should also take a look at 600 Mbps Ethernet service. You may be surprised how the two competing connections compare.

OC-12 (622 Mbps) is the next step up from OC-3 (155 Mbps) in the SONET optical carrier hierarchy. You’ll find this service readily available in Metropolitan Area Networks (MAN) and as a dedicated Internet access connection for mid-size Internet service providers. Large organizations also have OC12 bandwidth connections, especially those with thousands of employees on-site or a need to support high bandwidth applications like medical image transmission or video production and distribution.

Not too many years ago, OC12 was considered a good choice for a carrier fiber optic core network. Now, most regional and national carriers have moved up to OC-48 at 2.5 Gbps or OC-192 at 10 Gbps. Long haul and undersea fiber lines are running at OC-768 (40 Gbps) and moving quickly to support 100 Gbps.

OC12 is most often deployed on a protected SONET ring topology, with two counter-rotating fiber rings. If something in one ring fails, either equipment or a cable break, the other ring will pick up 100% of the traffic within 50 mSec.

Note that an OC12 service is probably not the only traffic on a particular fiber strand. At 622 Mbps, OC12 comes nowhere near using available bandwidth of the fiber. SONET is designed as a Time Division Multiplexed (TDM) system that can easily add or drop common OC service levels such as OC3 and OC12. In addition to the electrically multiplexed services on the fiber, each fiber may also be optically multiplexed into a dozen or more wavelengths using Dense Wavelength Division Multiplexing (DWDM) equipment.

Carrier Ethernet over fiber is based on packet switching rather than time division multiplexing. Without the strict synchronized channels of TDM, Ethernet is far more scalable. You can order 600 Mbps Ethernet as a replacement for OC12 SONET. You can also order 500 Mbps if that is all you reasonably need. Even more importantly, you can start increasing bandwidth to 700 Mbps, 800 Mbps, 900 Mbps and 1 Gbps as business requirements dictate.

With SONET, the service provider will install a managed router as Customer Premises Equipment (CPE) that includes an interface module specifically designed for the particular OC service level you have installed. The modules for OC3, OC12, and OC48 will plug into the same port on the router, but they are not interchangeable. You need to match the particular interface to the OC service level. That becomes important when you want to implement a service change. The provider will need to roll a truck to either swap out interface modules or completely replace the CPE router.

With Carrier Ethernet, your service provider will install a managed router that can support a particular port speed. For Ethernet over Copper, this is likely 100 Mbps. For fiber, you are likely looking at 1 Gbps, although you can often get equipment rated to 10 Gbps if you expect to be upgrading to that speed level in the foreseeable future. With a 1 Gbps port, you can order whatever service level you need between, say, 100 Mbps and 1 Gbps, in 100 Mbps or smaller increments. No equipment changes are needed as you change service levels within that range. You simply call your provider and tell them to increase bandwidth and you’ll see it happen within a few days, sometimes within a few hours.

Beyond scalability, Ethernet has a cost advantage over SONET in most situations. Sometimes the cost difference is dramatic, even half the cost, for Ethernet versus SONET of the same bandwidth. The one limitation that you’ll run into is that SONET has been around a lot longer and is more available than Ethernet over Fiber. Even so, competitive carriers have been aggressively building out their IP networks and may have fiber service closer than you think.

Do you require fractional Gigabit bandwidth services? If so, it is worth your while to compare 600 Mbps Ethernet to OC12 SONET for cost and availability. The same advice is true for other service levels from T1 copper bandwidth on up to 10 Gbps and higher.

Moving From OC-3 Bandwidth To Ethernet

Many medium size and larger businesses have been using OC-3 bandwidth over fiber optic connections for dedicated Internet access, video transport, remote data backup, large file transfers between sites and other high bandwidth applications. Now, there’s a newer lower cost option that can get you as much bandwidth or more for less money.

That solution is Carrier Ethernet. You may still think that Carrier Ethernet is a specialty service found in only a few areas by even fewer service providers. Not any more. Carrier Ethernet is mainstream. There is a mad dash underway to convert TDM based networks to IP packet networks. It may not be much longer that you’ll even be able to get OC-3 bandwidth services.

It’s all about the switch from telephone technology based on individual circuits to computer network technology based on packets. What’s happened in recent years is that the vast majority of traffic around the world has changed from voice to data to video. Voice is now thought of as one more service on a converged network that can transport voice, data or video with equal ease.

OC-3 is a TDM or Time Division Multiplexing technology. It has its roots in telephony, where everything revolves around small discrete channels that each carry one individual digitized telephone call. All of those channels are carefully synchronized by giving them each their own time slot in the bitstream.

So what’s wrong with that? Nothing other than the fact that using this methodology to transport packets that aren’t the same size as channels and don’t require the TDM synchronization unduly complicates the network interface and introduces inefficiencies. An OC-3 line runs at 155.52 Mbps with a payload of 148.608 Mbps.

Ethernet is the same protocol that runs on your corporate network. What Carrier Ethernet does is enable that same protocol to run for long distances on Metropolitan and Wide Area Networks.

Is there a direct Ethernet equivalent to OC-3? Not exactly. Ethernet does have standard LAN speeds of 10 Mbps, 100 Mbps, 1,000 Mbps and 10,000 Mbps. Carrier Ethernet is far more scalable, though. You can order just about any bandwidth you require. A 150 Mbps Ethernet service is pretty much equivalent to the OC-3 speed. You could, however, select 100 Mbps, 200 Mbps or some other bandwidth that more closely matches your true requirements.

Here’s something else that makes your life easier. Install a Gigabit Ethernet port and you can easily upgrade to any bandwidth up to 1 Gbps at any time. Start with 150 Mbps to match that OC-3 today and later move up to 300 Mbps, 500 Mbps, 750 Mbps or 1,000 Mbps when the need dictates. In the mean time, you’ll be paying for only what you need on that fiber optic link.

Moving from OC-3 to the next available standard of OC-12 means you’ll have to jump from 155 Mbps to 600 Mbps and wait for a technician to change out your router card or managed router. Moving from 150 Mbps Ethernet to 200 Mbps Ethernet or higher can be done with a phone call in hours or days, not potentially weeks or longer.

Best of all, Carrier Ethernet is almost always priced less per Mbps than OC-3 and similar telco services. The reasons are increased competition and a technology that is on the rise, not the decline. How much can you save by making the move from OC-3 bandwidth to Ethernet? Check fiber optic bandwidth prices and availability to find out how many competitive options are available for your business location.



Note: Graphic of router symbol courtesy of Tosaka on Wikimedia Commons.

Moving on From SONET To Ethernet

Technology change is something we’re all familiar with. Every year, there’s a new bevy of cell phone models that make the old ones look tired and obsolete. Tablets are moving into to take over from netbooks even before netbooks completed taking over from laptop computers. It’s only in the staid world of telecommunications that technology time stands still... or does it?

Actually, there’s been a revolution brewing in telecom for decades. It’s all about move from circuit switching to packet switching technologies. Circuit switching got established from the days of Alexander Graham Bell and only became more entrenched as capital investment in central office switches and digital transmission equipment accumulated.

So, what’s wrong with circuit switching? Technically, nothing. It’s a mature technology honed by a century of refinement. So what’s the motivation to move away from a sure thing?

It’s all about computer networks and especially the Internet. While once there were many architectures and protocols, now the lion’s share is Ethernet. Except for a few special situations that still benefit from non-IP network designs, everything is supporting Ethernet. The economy of scale in manufacturing has operated as a positive feedback loop to ensure that you need a very good reason and deep pockets to select anything but off-the-shelf Ethernet interfaces.

The battlefront is at the interface between LANs and the outside world. It’s Ethernet inside and something else outside. That something else is telecom standardized circuit switched wireline and fiber optics. The need to succeed has made the two compatible through specialized interface hardware and software. But how long will this standoff continue?

Not much longer by the looks of things. Competitive carriers have build their new networks with IP cores rather than adapting traditional SONET fiber optic switched circuit services to transport their Ethernet offerings. SONET/SDH is the high end of circuit switching development and likely the end of the line for this technology path. It has a maturity level and deployment that far exceeds the upstart Carrier Ethernet. Ethernet is the future, SONET is the present and, more and more, the past. At some point, the momentum will switch and the Ethernet takeover will ensue en-masse.

That point may be sooner than any of us think. As evidence, a major competitive carrier, XO Communications, has announced that they are not planning to buy any more SONET moving forward. That’s especially significant since XO is rolling out a major network upgrade over the next few years. This should put a smile on the face of product managers in charge of Ethernet switches, routers, multiplexers and the like. It should have the opposite effect on those planning development and production of SONET equipment. If more carriers follow suit, you’ll see Ethernet lines becoming more robust and SONET heading for end-of-life management.

You can see the handwriting on the wall by comparing Carrier Ethernet line services with their SONET equivalents. On a Mbps and Gbps basis, Ethernet is getting cheaper faster than SONET in most areas. As the price gap widens, IT managers will need more and more justification for choosing SONET over Ethernet. Even if there’s capital investment involved in switching over to all-Ethernet networking, it will increasingly be seen as a smart move.

How about your high bandwidth connections? Could you be benefiting from Carrier Ethernet right now and not realize it? Time is money, so don’t wait any longer to find out. Get Carrier Ethernet service prices and availability now. You, too, may become part of the stampede from SONET to Ethernet.



Note: Fisheye photo of data center courtesy of Wikimedia Commons

You’ll Believe This MAN Can Fly

Metropolitan Area Networks are becoming more important in connecting business sites within the same city or city and suburbs. That’s especially important for franchise operations or businesses with many nearby branch offices, such as banks, insurance sales, gas stations and so on. What’s been limiting so far is the speed of the network connections available. Not any more. Metro networks are ready to fly.

The MAN or Metro Area Network is the networking solution between LANs or Local Area Networks and the much larger WAN or Wide Area Network. The MAN serves an important function in transporting voice, data and video traffic within a limited geographical area. Without the MAN, you are left to concocting your own solution by piecing together a collection of individual point to point telecom lines. Many companies have done this over the years with T1 lines and their own central router. But the MAN offers more bandwidth options and a significant cost savings.

Where does the cost savings come from? It’s a function of amortizing the cost of operating the network among the customers who subscribe to it. The MAN service provider installs a protected SONET fiber optic ring or IP core network and enough access points to reach business locations within the metropolitan area. Fiber optic networks are well suited to this application. They have nearly unlimited bandwidth when you install multiple core cables and use wavelength division multiplexing. An add-drop multiplexer a key points of presence makes it easy to get traffic on and off the network. All you need then is access connections from each location to the MAN.

SONET metropolitan area networks were the first to be installed using proven technology from the telephone industry and operated by the incumbent local telephone companies. OC3 connections at 155 Mbps have been popular with enterprise companies. Those needing higher bandwidth levels can upgrade to OC12 at 622 Mbps and even OC48 at 2.5 Gbps.

The Ethernet MAN is newer and offers some advantages over SONET based networks. First, Ethernet is scalable in small increments, so you can generally get whatever level of service you need from 10 Mbps standard Ethernet on the low end through 100 Mbps Fast Ethernet, 1000 Mbps Gigabit Ethernet and now even 10 GigE running at 10 Gigabits/second. Need more than that? Lease wavelength services or a dark fiber and install as much bandwidth as you require.

Ethernet services include Ethernet line service for point to point connections between two locations or Ethernet LAN service to interconnect as many locations as you require. These are level 2 switched services to that you can treat your entire operations in the metro area as a single bridged LAN.

Finally, Ethernet MAN services generally have a significant cost advantage over traditional telecom services. Bandwidth cost per Mbps is sometimes a fraction of what you would otherwise pay. This is due to a high degree of competition in metropolitan areas among independent carriers that have installed their own metropolitan and long haul fiber optic networks.

Do you have a need for MAN connections to support your business or organization? If so, check Metropolitan Area Network prices and availability now.

Finding An Ethernet Internet Provider

You’ve heard that Ethernet Internet service offers advantages over traditional telecom services, such as T1 lines and DS3 bandwidth. But where do you go to find an Ethernet Internet provider? You go right here...



The Ethernet Internet Finder is your one-stop service for locating Ethernet Internet providers and getting competitive service quotes. It’s affiliated with Telarus, Inc., the renowned telecom services broker, and connects to their patented GeoQuote software and suite of expert consultants. All you do is enter some basic company contact information and you are good to go. Try to enter the main telephone number at the business rather than a cell phone, as the system uses this information to help find service availability and pricing.

Don’t worry about getting charged for any of this. The Ethernet Internet Finder is free to use for any serious business purpose. The friendly consultants will go over the range of services available for your location and make recommendations for how you can get the most bandwidth for the least cost. Yes, you need a location that is listed for business use for this to work. If you are working from a home office or want residential service, we recommend “Can I Get DSL?” to find your best options for DSL, Cable, 4G wireless, fiber to the home, and satellite broadband.

In case you are not familiar with Ethernet Internet access, this is a fairly new bandwidth service that is growing by leaps and bounds. It provides an Ethernet connection from your local area network, which is already running Ethernet, to the Internet, which is highly compatible with Ethernet. Traditional telecom connections were designed to transport telephone calls and are not as efficient as what’s known as Metro or Carrier Ethernet. There are also many new providers who specialize in Ethernet and IP networks that are anxious to compete for your business.

As a result, you can generally save money when you switch to Ethernet Internet service. How much? It’s not unusual to get twice the bandwidth for the same cost using Ethernet at 3 Mbps vs a T1 line at 1.5 Mbps. The higher the bandwidth, the lower the price per Mbps.

Also, new Ethernet over Copper (EoC) technology can deliver 10 Mbps Ethernet connections to your business using existing twisted pair copper wiring. You don’t necessarily have to bring in new fiber optic service to get the bandwidth you need. How much bandwidth can you get and for what cost? The easy way to find out is to use the Ethernet Internet Finder now.

What Is Lowering Gigabit Ethernet Bandwidth Pricing?

If you have recently gone out for quotes on Gigabit Ethernet bandwidth, you may have been surprised by how much prices have dropped the last few years. That’s one pleasant surprise for organizations that need higher levels of business bandwidth for cloud computing access, e-commerce, medical image transmission, video distribution and the like. But is this for real and what is driving these prices lower?

Yes, it’s for real alright. In fact, bandwidth services across the board can be had for a fraction of what you may have paid when you signed your last service contract. That applies to everything from T1 lines to DS3 connections and on up through OCx SONET/SDH fiber optic bandwidth. It also includes competing services like Ethernet, Fast Ethernet, Gigabit Ethernet and 10 Gig E. Plus multi-location cloud networks like MPLS. They’ve all dropped in price. But the cost per Mbps is often most dramatic for Ethernet services.

What’s behind the lowered prices? Two factors can be credited. First is the move from traditional switched circuit transport technologies to packet switched IP networks and services. Second is new levels of competition.

Both legacy service providers, the telephone companies, and new competitive carriers have built-out extensive networks based on IP or a networking technology that embraces IP, such as MPLS or Multi-Protocol Label Switching. You can thank the Internet for that. The enormous volume of equipment and services to support near-universal demand access to the Internet has decreased the price of Ethernet and IP networking to a fraction of what it costs for competing technologies. The entire world is going to packet switched networks based on Internet Protocol.

When every LAN is running Ethernet, it just makes sense that the most efficient way to connect all those local area networks is with an Ethernet connection. Ethernet over Copper lets you do this from typically 3 Mbps on up to around 50 Mbps. Ethernet over Fiber is good for 100 Mbps Fast Ethernet, Gigabit Ethernet, and even 10 Gigabit Ethernet. Gigabit Ethernet is becoming a requirement for medium and large companies depending heavily on high productivity enterprise software or distributing media content, such as video. At the very highest levels, even 10 GigE is no longer out of the question.

The move from legacy telco technologies to IP based fiber optic networks has brought new players into the marketplace for WAN networking services. These competitive carriers have built their own regional or national fiber optic networks and established colocation facilities and points of presence in most major cities, even some mid-size cities. They can often bring their own fiber into business locations and bypass the telephone companies completely. Now instead of one option for service, you may have several or more even at the Gigabit Ethernet level. That spells competition and competition leads to lowered prices.

Could your organization benefit from the recent cost reductions in high bandwidth networks services? Don’t shake your head no until you check current prices and availability for Gigabit Ethernet bandwidth services and other bandwidth offerings. At the very least, your next service lease could cost you less than the one you have now.

Find The Ethernet Internet Connection

Are you interested in more bandwidth for your business, but concerned about the cost? You may be able to get just what you want with an Ethernet Internet connection.



Ethernet Internet connections are something new. Certainly, we’ve all been using Ethernet on our local area networks for as long as we can remember. The Internet itself is an IP service that is very compatible with your LAN Ethernet. The odd protocol in-between has been the telecom services available to link to the Ethernet itself.

You probably have T1 or DS3 service as your network access connection. Each of these requires a special CSU/DSU or router interface card at each end of the connection. These units and their associated software perform a protocol conversion and provide the proper signal interface to standard network Ethernet ports. But with Ethernet connections, none of that is needed. It’s Ethernet all the way. How do you connect to the Internet? How about just plugging into a standard RJ-45 connector?

In addition to simplicity of connection, Ethernet WAN or Wide Area Network services are also generally cheaper than T1 lines or DS3 bandwidth. In many areas, you can now get 3 Mbps Ethernet for the same price as 1.5 Mbps T1. 10 Mbps Ethernet is very popular for small to medium size businesses. It can be had for what T1 lines cost just a few years ago.

Ethernet Internet connections are also scalable. You can get bandwidths from 1 Mbps up to 1 Gbps. The lower speeds, from 1 Mbps to about 50 Mbps, can be provided over existing twisted pair copper telco cables. For the higher speeds, you’ll need a fiber optic connection. Those are also highly affordable compared to what you’ll pay for traditional telecom services at that level.

Are you interested in how you can increase your bandwidth and perhaps even save money at the same time. Take a minute now and use the Ethernet Internet Finder to get connection prices and availability for your business location.