Ethernet Solutions

Ethernet Private Line is a point-to-point service that generally employs dedicated SONET channels over a shared SONET infrastructure. With Ethernet Private Line services, Ethernet frames are encapsulated in SONET payloads at the customer premises and transported through a SONET infrastructure to another customer site where the Ethernet frames are extracted.

Ethernet Private Line services include:

• Ethernet over T1
• Ethernet over DS3
• 10 Mbps Ethernet (10BaseT) over SONET
• Fast Ethernet (100BaseT) over SONET, including full rate Fast Ethernet (100 Mbps) and 50 Mbps partial rate Fast Ethernet
• Gigabit Ethernet over SONET, including full rate (1000 Mbps) Gigabit Ethernet and five partial rates (50, 150, 300, 450, and 600 Mbps)

SONET Payloads

The fundamental SONET payload, which is designated STS-1, can support a data rate of 49.5 Mb/s. Ethernet frames (10 Mb/s), partial rate Fast Ethernet frames (50 Mb/s) and the lowest partial rate Gigabit Ethernet frames (50 Mb/s) are mapped into STS-1 payloads. STS-1 payloads can be concatenated (linked together) to form larger payloads. Three STS-1 payloads are concatenated to form an STS-3c payload, which is used to carry full rate Fast Ethernet. Twelve STS-1 payloads are concatenated to form an STS-12c payload, which is used to carry 600 Mb/s Gigabit Ethernet.

Virtual Concatenation

With virtual concatenation, STS-1 payloads can be logically linked at the end points, but handled separately by the network. Three STS-1 payloads are virtually concatenated to form an STS-1-3v payload, which is used to carry 150 Mb/s Gigabit Ethernet. To accommodate the other partial rate Gigabit Ethernet services, six, nine, 12 and 21 STS-1 payloads are virtually concatenated.

Customer Interfaces

For the 10 Mb/s Ethernet service, an electrical customer interface based on the 10BASE-T standard is supported. The 10BASE-T interface involves two unshielded twisted pairs up to 100 meters in length. For the Fast Ethernet service, the customer interface is based on the 100BASE-TX standard, which also involves two twisted pairs up to 100 meters in length. Implementations compatible with both 10BASE-T and 100BASE-TX standards are generally used. For the Gigabit Ethernet service, optical interfaces with the customer equipment are employed. The Gigabit Ethernet interfaces are based on either the 1000BASE-SX standard, which involves multi-mode fiber (MMF), or the 1000BASE-LX standard, which involves single mode fiber. In general, distance limitations for optical interfaces are not an issue for Ethernet Private Line services.

Alternate Handoff

As an alternative, a SONET handoff rather than a native mode handoff can be provided to the customer on one end. The SONET handoff would be optical and would involve a standard SONET interface, such as an OC-3 or an OC-12 interface.

Benefits:

Ethernet Private Line is a SONET-based private line service, and thus provides near-perfect quality of service and a high degree of resiliency. Ethernet Private Line services are less expensive than traditional private line services and wavelength services. Ethernet Private Line services can be employed to provide seamless interconnection of customer local area networks (LANs) or extensions to customer SONET rings.

Summary:

Whether for file transfer, email, or accessing the World Wide Web, Ethernet can provide a low overhead, high quality connection. By replacing legacy Frame Relay and ATM services with Ethernet based services, companies can reduce costs and simplify network administration by using LAN technology over the MAN (Metropolitan Area Network) and WAN (Wide Area Network).

At EasyT1.net, we partner with the top providers of Ethernet Private Line Services and can help you choose the right solution for your business. From 10Mb Ethernet Private Line services to 10Gb Ethernet Private Line Services, EasyT1.net can help your team achieve the results they need for your business. Through our extensive partnerships, we have access to some of the most competitive pricing in the industry. Please contact us today to find out what we can do for you.