Cisco SONET/SDH Specifications download pdf (Page 13)

CHAPTER

1-1

Cisco ONS 15454 SONET/SDH Unified Control Plane Configuration Guide

OL-4214-01

Overview

This chapter provides an overview of the unified control plane (UCP) and the user-network interface

(UNI) implementations, supported by the ONS 15454 SONET and SDH systems. Cisco Transport

Controller (CTC) releases 3.4 and later support UCP.

This chapter contains the following sections:

• 1.1 Understanding UCP, page 1-1

• 1.2 UNI Implementation, page 1-1

1.1 Understanding UCP

UCP is a software feature released for Cisco ONS 15454 SONET and SDH Releases 3.4 and later. It

provides a service architecture that can manage and provision network elements (NEs) using a single

management layer. For example, UCP allows a user to perform “A to Z” provisioning outside of an

ONS 15454 section data communications channel (SDCC)-connected network without a higher-layer

management system to communicate between subnetworks. The network infrastructure can include

assorted NEs such as routers, Layer 2 (L2) and Layer 3 (L3) switches, SONET and SDH optical

products, optical cross-connects, and wavelength routers.

UCP comprises two major interface types, a user-network interface (UNI) and a network-network

interface (NNI). Both UNI and NNI are optical interfaces. UNI conforms to the Optical Internetworking

Forum (OIF) UNI 1.0 standards. It provides data client services, rapid provisioning of SONET and SDH

circuits through an optical internetwork, and signaling between a client device and a transport network

element. NNI exchanges signals and routing data between NEs in a network. The difference between

UNI and NNI is that UNI does not support the exchange of routing information (such as topology data)

across the interface. The ONS 15454 SONET and SDH systems do not support NNI configuration.

1.2 UNI Implementation

This section describes the client and network roles, communication between adjacent nodes, port

addressing requirements, and inter-domain circuits in a UNI implementation. The Cisco Transport

Controller (CTC) is the network management tool used for UNI provisioning. All circuit capabilities

supported in the ONS 15454 SONET and SDH Release 3.4 and later are available for UCP circuit

provisioning.

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Cisco SONET/SDH Specifications Page 13