Compared to other protocols, Ethernet has significant advantages, including the following:
- Low cost
Because Ethernet is everywhere and the volume is high, the cost is low.
Ethernet is compatible with most customer LANs.
A wide range of applications can run over Ethernet.
Ethernet provides both Layer 1 and Layer 2 functions; it can be used with or without SONET encapsulation; it can support both point-to-point and multi-point applications.
Bandwidth Ethernet can accommodate data rates all the way from 10 Mb/s to 10 Gbps.
Customers are familiar with Ethernet and feel comfortable with Ethernet interfaces to the wide area network.