Network Element Defaults Guide for Cisco NCS 2000 and ONS 15454

Quick Guide to Network Element Defaults

This document provides the factory-configured (default) network element (NE) settings for the Cisco ONS 15454 and Cisco NCS 2000 series platforms. It covers card-level, node-level, and Cisco Transport Controller (CTC) default settings. Understanding these defaults is critical for network provisioning and maintenance.

Understanding NE Defaults

NE defaults are preinstalled on TCC2, TCC2P, TCC3, TNC, and TSC cards. You can also import defaults using provided .txt files. Key principles include:

• Card-level changes: New provisioning performed after changing defaults is affected, but existing provisioning remains unchanged.
• Node-level changes: Changing node-level defaults may override current provisioning and, in some cases, cause CTC disconnection or a node reboot.
• Interdependency: Some settings, particularly thresholds, are interdependent. Always review the domain of allowable values before making changes.

Card Defaults (ANSI and ETSI)

The guide details configuration defaults for DWDM, Transponder (TXP), Muxponder (MXP), and Ethernet cards. These are categorized into:

• Configuration Defaults: Reachable via CTC card-level Provisioning tabs, including Line, OTN, and Card-specific settings.
• Threshold Defaults: Define cumulative values that trigger Threshold Crossing Alerts (TCA). These include PM thresholds, Optical thresholds, OTN FEC thresholds, and OTN G.709 thresholds.
• Automatic Laser Shutdown (ALS): Configuration defaults for optical safety, managed via the Maintenance > ALS tab.

Node-Level Settings

Node defaults allow for broad management of the network element. Key configurable areas include:

• Circuit Settings: Administrative states and protection defaults.
• General Settings: NTP/SNTP server, time zone, and TL1 reporting.
• Security: Grant permissions, DataComm, RADIUS, Policy, and Password settings.
• Timing: BITS timing and general node timing modes.
• Protection: Settings for 1+1, BLSR, Y-Cable, and Splitter protection.

CTC Default Settings

The Cisco Transport Controller (CTC) has specific defaults that influence how circuits are created and how the network is viewed, including:

• Automatic Routing: Controls whether the 'Route Automatically' check box is selected by default.
• Network Map: Sets the default country map displayed in the CTC network view.
• Local Domain: Determines if user-created domains persist globally or only within the current session.