Optical Network Design and Implementation

Circuit Provisioning

Provisioning a UPSR, BLSR, linear ADM, or PPMN is not complete without assigning circuits for transport of user traffic. This section explains how to create and administer various types of Cisco ONS 15454 circuits and tunnels. DCC tunnels can also be created to tunnel third-party equipment signaling through ONS 15454 networks. Cross-connects refers to the connections that occur within a single ONS 15454 that allow a circuit to enter on one port and exit on another, whereas the term circuit refers to the series of connections from a traffic source (where traffic ingresses the ONS network) to the drop or destination (where traffic egresses an ONS network). Various types of STS and VT1.5 circuits can be provisioned across and ...