Cisco Cisco IOS Software Releases 12.0 SP

This feature module describes the IP over Data Communication Channel (DCC) network management 
feature and how to configure it in networks consisting of Cisco 12000 series Internet Routers, the Cisco 
ONS 15104 OC-48/STM-16 Bidirectional Regenerator, and Cisco 10720 Internet Routers. 

This document includes the following sections:

The IP over DCC feature uses the SONET/SDH Operation Administration and Maintenance (OAM) 
channel to manage devices that support Synchronous Optical Network (SONET)/Synchronous Digital 
Hierarchy (SDH) interfaces. SONET/SDH standards support extensive operations, administration, 
management, and provisioning (OAM&P) capabilities. 

The following overhead bytes are specified in the standards as the OAM channels that carry management 
information, alarms, and management commands:

D1 to D3 bytes of the Section overhead 

D4 to D12 bytes of the Line overhead 

These overhead bytes are referred to as the data communication channel (DCC). The Line-level DCC is 
a 576 kbps OAM channel; the Section-level DCC is a 192 kbps OAM channel. 

12.0(19)SP

This feature was introduced on Cisco 10720 Internet Routers.