思科电信运营商核心网络运营基础(OFCN)考试是与CCNP SP运营认证相关的考试。该考试主要检验考生在电信运营商网络运营环境方面的知识，重点关注与第二层和第三层网络运营有关的中-高级流程管理、NMS工具和故障排除技能。

　　Exam Description

　　The 642-770 Operational Foundations for Cisco Service Provider Core Networks (OFCN) exam is the exam associated with the CCNP SP Operations certification. This exam tests a candidate's knowledge of the SP network operations environment, focusing on mid to upper-level processes management, NMS tools, and troubleshooting skills associated with Tier II and Tier III Network Operations. Candidates can prepare for this exam by taking the OFCN Operational Foundations for Cisco Service Provider Core Networks course.

　　Exam Topics

　　The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes the guidelines below may change at any time without notice.

　　Perform operations tasks in an IP NOC environment

　　Describe release, configuration, change, incident and performance management processes, as related to network operations

　　Perform periodic reactive trouble ticket reviews

　　Open vendor tickets and escalate as appropriate based on Service Level Agreements

　　Resolve escalated incidents or problems by creating RFCs or implementing workarounds

　　Document steps that should be taken to resolve particular network problems

　　Define proactive problem management and root cause analysis tools and methods

　　Plan, coordinate, and support network upgrades and changes

　　Identify the methods used to perform proactive network maintenance

　　Interpret performance and incident reports and recommend actions for problem avoidance

　　Troubleshoot an IP NOC environment

　　Describe network troubleshooting methodologies

　　Identify information needed to troubleshoot problems

　　Identify and categorize network incidents based on the OSI model

　　Troubleshoot complex core network faults

　　Troubleshoot transport layer and network access technologies to the aggregation edge

　　Isolate problems using standard TCP/IP IPv4 and IPv6 tools

　　Identify the most probable cause of a problem based on troubleshooting test output

　　Troubleshoot network service issues and its interoperability with OSS platforms within the core network

　　Use protocol analysis and packet decode tools to diagnose and troubleshoot network issues

　　Interpret XML messages and protocol without the use of NMS

　　Operate network equipment in an IP NOC environment using Cisco IOS XR

　　Describe differences between Cisco IOS and Cisco IOS XR Software

　　Identify standard XR CLI commands

　　Identify Cisco IOS XR software architecture and features

　　Interpret and deploy basic XR configurations

　　Describe process of downloading and installing new software and Software Maintenance Upgrades (SMU) for Cisco IOS XR Software

　　Manage network configurations in an IP NOC environment

　　Identify global configuration templates

　　Ensure that device configurations comply with global configuration templates

　　Create device specific configuration templates

　　Interpret and edit scripts that support process automation

　　Identify daily preventative maintenance tasks for network operations

　　Manage the change process an IP NOC environment using Change Management procedures

　　Identify the planning elements of a core network RFC

　　Identify and update logical and physical documentation impacted by change management RFCs

　　Review and approve network related changes to the network

　　Identify network improvement opportunities from periodic change metrics

　　Identify RFC MOP elements that support a managed network change

　　Identify methods used to perform Cisco IOS and Cisco IOS XR software and hardware upgrades, downgrades, or replacements

　　Implement planned Cisco IOS and Cisco IOS XR software and hardware configuration changes to a core network

　　Verify implementation of Cisco IOS and Cisco IOS XR software and hardware changes

　　Identify impacts of network changes to related processes and systems

　　Manage IP network performance in core and aggregation components in an IP NOC environment

　　Identify network faults and capacity planning utilizing performance data

　　Identify network capacity and performance using key performance indicator (KPI) data

　　Identify key performance indicators at the network, device and service levels

　　Identify baselining and its value in capacity and performance management

　　Identify improvement opportunities and issues in traffic patterns and thresholds using alarms and network data

　　Determine appropriate actions to resolve performance or capacity issues

　　Identify causes of threshold crossing alerts

　　Identify methods and tools used to predict network capacity issues