The sole advantage of Carrier Ethernet is its low price-to-bandwidth ratio. Ethernet is a ubiquitous technology, and its widespread acceptance and simplicity have made Ethernet-supporting silicon relatively cheap compared to any other networking technology.
You can manage per-user bandwidth in three different ways:
- By configuring rate-limiting on the switch's physical port to which the end-user is connected;
- If you use PPPoE for user access in a Carrier Ethernet environment, you can perform per-user rate-limiting on the broadband remote access server (BRAS);
- The most scalable solution is undoubtedly a dedicated traffic management device, such as Cisco's Service Control Engine (SCE).
You can learn more by reading this workshop on service provider network market trends.
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