Content

| 10.3 |  | Examining Fiber Optic Transports |
| 10.3.3 |  | Implementing SONET/SDH within a metropolitan network |

High speed MAN services can be layered over an existing SONET infrastructure. This allows for the smooth addition of services for the service provider and support for either point-to-point dedicated bandwidth or point-to-multipoint shared bandwidth to downstream devices.

The network in Figure depicts the construction of a SONET-based transparent LAN network. The core is a SONET network while the edge supports Ethernet. The Transport Layer Security (TLS) data traffic can be metered as well as supported under various service level agreements (SLAs).