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.

GigE Ethernet Private Lines

High bandwidth fiber optic connections have traditionally been handled by SONET (Synchronous Optical NETwork) services. GigE is now a strong competitor, offering high bandwidth, low latency and cost advantages.

GigE or Gigabit Ethernet MAN and WAN services match the bandwidth that many company LANs are running. This makes for a seamless connection to other business locations or the Internet. Cost considerations have previously dictated a speed bump for file transfers and access beyond the LAN. With cost reductions on GigE bandwidth services, it’s now practical to have WAN bandwidth equal to LAN bandwidth.

SONET is a telco technology available in a handful of bandwidth options. The closest levels to 1,000 Mbps are OC-12 at 622 Mbps, OC-24 at 1.244 Gbps and OC48 at 2.488 Gbps. OC-24 is not as common as the others, so that OC-48 must be used for Gigabit bandwidth service. That is one of the reasons for the often large discrepancy in prices for SONET vs Ethernet bandwidth.

Gigabit Ethernet private lines have become popular since new competitive carriers have entered the marketplace for fiber optic services. Not saddled with the need to support traditional switched circuit telco technologies, many of these operators have elected to build their fiber optic networks as IP-based from the ground up.

IP is becoming the long haul protocol of choice for a number of reasons. First, most of the traffic today comes from IP networks and is used by IP applications. At one time, telephone calls dominated worldwide telecom traffic. No more. The changing of the guard from voice to data has been going on for decades. Now the big bandwidth user is video. This can be video conferencing or downloaded video clips and programs.

Ethernet is the dominant protocol running on local networks today. It makes perfect sense to transport Ethernet without conversion in metropolitan and wide area networks. By operating all network connections as packet switched instead of converting back and forth to circuit switched protocols, the overall network is more efficient and capable of supporting Ethernet line service.

E-Line, short for Ethernet Line service, is a layer 2 connection service that can tie together LANs at two different locations as if they were one bridged LAN. This has the advantage of putting everyone in the company on an equal footing regardless of where they happen to be located. The PC in New York is right next door to the printer in Seattle and the server in Dallas as far as the network is concerned.

You can order Ethernet private line services in a wide range of bandwidths, although the standard network speeds of 10, 100, and 1,000 Mbps are popular. Even 1,000 Mbps 10GigE connections are now available in many major markets. Unlike SONET, your Ethernet bandwidth can be easily scaled to the maximum limit of the installed port. That offers the advantage of being able to order, say, 200 Mbps today and scale it up to 500 Mbps tomorrow and 1,000 Mbps next year. As long as you have a GigE port installed, these bandwidth changes can often be accomplished in a few hours or days with only a phone call to your carrier. No truck rolls are necessary because the same equipment is used.

What can you use GigE Ethernet private line bandwidth for? How about medical image transmission, scientific simulations, CAD/CAM files, and video production? If you are moving your data center to the cloud or anticipating such a move, you may well need a GigE connection to your service provider to avoid lags in using your high performance applications.

The price of bandwidth as high as a Gigabit per second have dropped dramatically over the last few years, especially with the availability of Gigabit Ethernet MAN and WAN connections. Get pricing and availability for GigE Ethernet private line services now and see how affordable it has become.

Managed IP Services Cloud

Cloud services are seeing a lot of interest lately, as companies look to reduce their capital expenditures for IT and gain capabilities they couldn’t otherwise afford. But did you know there are a wide range of IP services available in the cloud?

Cloud services can be in-house or private, or they can be purchased from a cloud services provider. Providers have a wide range of specialties. Some offer only remote storage. Others specialize in high performance computing. Still others offer alternatives to in-house telephone switching systems and even network security. What they all have in common is that their services run over IP networks. Hence, IP services or managed IP services.

The idea of managed services involves letting the carrier or services provider take over the job of making sure that everything is running correctly. Traditionally, that’s the job of the on-site IT staff who monitor what’s going on at all times and swing into action to make repairs whenever a fault occurs. Not every company can afford a 24/7 staff or even a full-time IT employee. Others may have a small staff that has gradually become overwhelmed as more and more applications have been turned up on the network. Managed services offer a way to offload some of this responsibility.

One basic managed service is the network WAN connection to the Internet. This could also be a private line between facilities or connections to an MPLS network to link multiple geographically diverse business locations. You often have the option of simply ordering a line service and then monitoring it yourself to ensure proper operation. The alternative is to have the carrier provide a router that allows them to monitor the line right up to the connection with your LAN. This is called a managed router or managed line service. Often you can get this management feature at no extra cost by shopping around.

The beauty of a managed router is that the carrier’s network operations staff is far larger than yours, available 24/7/365, and has the expertise in their own systems to rapidly troubleshoot and correct problems. It’s not uncommon to have a line failure in the middle of the night and have it back up and running before business hours commence. You may not even be aware than a fault occurred.

A step up from the managed line service is colocation of your servers and the bandwidth that feeds them to a carrier hotel or colocation center. You can elect to manage everything yourself or let the colo center staff handle server maintenance and repair, including any network connections.

Recently, Managed IP Telephony has become popular as an alternative to in-house PBX systems. Instead of a dedicated piece of switching equipment that you have to program and maintain, the telephony switch resides at the service provider. You connect by means of a network connection called a SIP Trunk. This assumes that you have converted to IP telephony or SIP phones and have converged your LAN for both voice and data.

SIP Trunking providers often go the extra step of providing both broadband Internet and telephone service on the same SIP trunk. This is a perfect interface to a converged local network that already transports both voice and data packets. Because the services and trunk line are fully managed, you are ensured that voice quality won’t suffer due to conflicts with data packets on the same line.

Would you like to ease the burden on your IT staff or avoid the capital expense of in-house facilities that may be more affordable in the cloud? If so, investigate Managed IP Services to see what’s available and compare costs.

Benefits Of An MPLS Mesh Network

Once your business has expanded to include additional locations, like branch offices, offsite data centers, factories or warehouses, you need a way to get all those locations on the same network for data, voice or both. The latest and greatest way to do that is the MPLS Mesh Network.

Companies with two locations don’t generally start off with an MPLS network. What they do is buy a point to point T1 line or Ethernet Line service to link the locations. T1 is the traditional P2P telecom service. Ethernet line service is newer and offers the ability to link two LANs at the layer 2 switching level.

So, who needs an MPLS network for two locations? Maybe you do. The reason isn’t that you need the multiple site connectivity that MPLS makes easy. It’s a matter of cost. Depending on the availability of T1 or Ethernet point to point service, you might be better off getting T1 or Ethernet last mile connectivity to a much larger MPLS network. The major incumbent and competitive carriers have regional, nationwide or international service footprints. If your two locations are across the country rather than across town, it’s conceivable that taking advantage of an MPLS network for the long haul span might actually have a cost advantage.

Now, let’s consider the business with 3 or more locations. You can still use the point to point line strategy to link them. If you try to create a mesh network with P2P lines from each location to every other location, you’ll find this topology gets pretty expensive pretty fast. What many companies have done is create a star network with point to point lines radiating out from company headquarters to each remote location. All traffic gets routed through HQ regardless of where it is going.

When you do this, you are effectively becoming your own WAN network provider. It has the advantage of giving you complete control of the network on a instantaneous basis. But it costs you the staffing needed for constant vigilance and the need to establish new long distance P2P lines every time another location is added. The cost goes up linearly as you add locations because there is no economy of scale when it comes to dedicated point to point data lines.

Where you do get economy of scale is by sending your traffic over a privately run MPLS network. All those P2P lines are replaced by access network connections at each location to be served. The lines are only long enough to reach the carrier's local point of presence, and priced accordingly. The carrier then sets up paths through its core network to interconnect your locations as you specify. You can specify which locations can connect to which other locations and how much bandwidth they have available. The MPLS connections can be set up as fully meshed so that every location can interact with every other location.

Beyond that, MPLS networks can easily handle fully converged voice, data and video networks so that you can include your telephone service and video conferencing on the same network. That can be an enormous cost saver for companies with business sites spread over many states, or with international locations included.

Are you paying too much to run your own wide area network to link multiple business sites? Get the quality and performance you require and enjoy a significant cost savings as well when you switch to an MPLS Mesh Network.