Oracle SBC استكشاف الأخطاء Operations و Maintenance (OCI) Ed 1 LVC

Course Introduction

• About the Course
• Objectives
• دورة
• Hands-On

Troubleshooting Hardware and the Network

• Objectives
• Lesson Topics
• Topic: Troubleshooting Boot Issues
• Boot Management
• Boot Management – Boot Loader
• Boot Management – Boot Parameters
• Boot Management – Boot Flags
• Boot Process
• SBC Boot Process: 1 (Loading Bootloader, Boot Parameters)
• SBC Boot Process: 2 (Loading the SBC Boot Image, Checking Disk)
• SBC Boot Process: 3 (Crash Kernel, Detecting Media, Boot Flag, & Platform)
• SBC Boot Process: 4 (Starting Media, Application & Configuration)
• SBC Boot Process: 5 (Enabling Features & Media Interfaces)
• SBC Boot Process: 6 (Starting More Daemon Processes / Tasks)
• SBC Boot Process: 7 (Completing)
• Interrupting the Boot Process
• [Acme Boot]Prompt Options (1 of 2)
• [Acme Boot]Prompt Options (2 of 2)
• Where to find the Diagnostic Image File – http://support.oracle.com (1 of 2)
• Where to find the Diagnostic Image File – http://support.oracle.com (2 of 2)
• Booting the SBC from the Diagnostic Image
• Executing Diagnostics Testing (1 of 2)
• Executing Diagnostics Testing (2 of 2)
• Diagnostic Shell Commands
• Key Points on Diagnostics Image File
• Boot Process Issues
• Solutions to the Boot Issues (1 of 5)
• Solution 1: Boot Locally from Another Boot File (2 of 5)
• Solution 2: Boot Externally from an FTP Server (3 of 5)
• Solution 3: Choose option l from the Acme Boot prompt* (4 of 5)
• Solution 4: Choose option d from the Acme Boot prompt* (5 of 5)
• Practice
• Topic: Troubleshooting Hardware and Network Issues
• What to Do with Hardware Failures?
• Hardware and Environmental Faults
• Hardware Temperature, Fan Speed & Environmental Sensor Alarm
• Power Supply Alarms
• Voltage Alarms
• Layer 2 Connectivity – ARP Functionality
• show arp
• arp-add / arp-delete
• Layer 3 – Network Layer
• Are There Layer 3 Issues?
• Enabling Management Protocols
• Enabling Management Protocols – GUI
• Interfaces Status Check – ACLI
• Interfaces Status Check – GUI
• How Is the Management Traffic Routed? (1 of 2)
• How Is the Management Traffic Routed? (2 of 2)
• show route-stats
• Practice
• Topic: Troubleshooting the SBC System Issues
• View the Basic Information About This SBC
• View the Basic Information About This SBC (1 of 3)
• View the Basic Information About This SBC (2 of 3)
• View the Basic Information About This SBC (3 of 3)
• View Features on the SBC
• System Fault Statistics
• show uptime
• show system-state
• What Is The Current CPU Usage?
• What Is The Current Memory Usage?
• Application Memory Usage Statistics
• Viewing Buffer Statistics
• License Capacity
• Performance Management
• System Time
• Configuring NTP
• Verifying NTP Server & Status
• Platform Information
• show platform
• show platform health-check
• show platform limits
• show platform health-check
• show platform cpu & show platform cpu-load
• show platform memory
• Viewing Active Processes
• Realtime CPU Usage
• Checking Remaining Diskspace
• Practice
• Summary

SBC Review

• Objectives
• Topics
• Topic: SBC Signaling Review
• What Is a Realm?
• Configuration Elements View
• Media Packets Path (Conceptual View)
• The sip-config Element
• SIP Edge Proxy Function
• Edge Proxy – sip-interface
• Configuring sip-interface Element
• Policy-Based Realm Bridging (PBRB) in Peering Environment
• Policy-Based Routing on the SBC
• Routing Decision
• local-policy Element Key Configuration
• Session Agent: General
• Example of session-agents
• Configuring The session-agent Element
• session-group (SAG)
• Configuring The session-group Element
• Topic: SBC Media Review
• Media Processing Requirements
• The media-manager-config Element
• Media Proxy Function
• The steering-pool Configuration Element
• Configuring steering-pool Element
• Media Establishment on the SBC
• Media Packets Path (Conceptual View)
• Topic: SBC Configuration Review
• Key Configuration Elements
• Relations of Configuration Elements
• Configuration Element
• Practice
• Summary

Troubleshooting Tools

• Objectives
• Topics
• Topic: Overview
• Management Architecture
• Data and Interfaces for Troubleshooting
• Troubleshooting Methodology
• What to Check Before Troubleshooting?
• Topic: Using the Alarm System and Syslog
• What Are Events on the SBC? (1 of 2)
• What Are Events on the SBC? (2 of 2)
• What Are Alarms in the SBC?
• The Alarm System in the SBC
• How Does the SBC Report Alarms?
• How to Clear the Alarms
• What Is the System Log on the SBC?
• System Log Events (Syslog Configuration)
• Example: acmelog Entries
• Practice
• Topic: Using SNMP
• Overview of SNMP on the SBC
• Enabling the SBC for SNMP v1 and v2
• Enabling the SBC for SNMP v3
• Enabling the SBC for SNMP v3 (GUI VIEW)
• Key Points on SNMP on the SBC
• How to Use the SNMP Data
• Common SNMP Traps
• Example: SNMP Traps in Wireshark
• Example: SNMP Traps in Trap Receiver
• SNMP Query for Monitoring
• Example: How Is the SBC Performance?
• Example: What Interfaces Are Available?
• Example: What Are the Session-Related Statistics?
• What If SNMP Queries Fail?
• What If SNMP Queries Still Fail?
• Problem Sending/Receiving SNMP Traps?
• Example: Troubleshooting with SNMP
• Practice
• Topic: Using the SBC Logging Functions and Log Files
• Logs on the SBC
• How to View Log Files
• Example: sipmsg.log
• How to Enable Logging
• How Much to Log in the Process Logs
• How to View Log Levels of a Process
• Example: log.sipd with Debug Log Level
• Example: log.sipd for Routing
• How to Start a New Log File
• How to Archive/Package Logs
• How to Stream Logs off the SBC
• Logging Versus System Performance
• Practice
• Topic: Packet Trace
• What Is Packet Trace on the SBC?
• How to Trace Packets Through the SBC (Remote)
• How to Start/Stop Packet Trace (Remote)
• How to Trace Packets on the SBC (Local)
• What to Look for in the Packet Trace
• SIP Monitor and Trace via E-SBC GUI
• Accessing SIP Monitor and Trace
• Enabling SIP Monitor and Trace
• Using Dynamic filters for Monitor and Trace
• Monitoring Notable Events
• Configuring Notable Events Monitoring
• Practice
• Topic: Using Call Detail Records (CDRs)
• Overview of CDRs on the SBC
• Enabling CDR on the SBC – Global Configuration
• Enabling CDR on the SBC – Storing CDRs on the SBC
• Enabling CDR on the SBC – Storing CDRs on a Hard Drive
• Enabling CDR on the SBC – Adding RADIUS Servers
• Enabling CDR on the SBC – FTP/SFTP Server Configuration
• Enabling CDR on the SBC – Realm Configuration
• Key Points on CDR Configurations
• CDR Output: RADIUS vs CSV
• How to Use the Data in CDRs
• Monitoring CDRs – Accounting Status
• Monitoring CDRs – Accounting Server Stats
• Monitoring CDRs – CDR Push Receiver Stats
• What to Consider When CDR Fails
• Example: Troubleshooting CDR Failures with Log Files
• Example: Troubleshooting Using CDRs
• Practice
• Topic: Using Historical Data Recording (HDR)
• Historical Data Recording (HDR)
• HDR Groups
• HDR – Things to Know
• Configuring HDR: Setting Global Collection
• Configuring HDR: Setting Push Receivers and Group Settings
• Sending HDRs to an SFTP Server
• ACLI Commands for HDR
• Example: HDR Information from SNMP Statistics
• Example: HDR Information from ACLI Statistics
• Troubleshooting HDR – 1 of 3
• Troubleshooting HDR – 2 of 3
• Troubleshooting HDR – 3 of 3
• Troubleshooting HDR – Example
• Practice
• Topic: What to include in a Support Ticket
• General SBC Troubleshooting Approach
• Opening a Support Ticket – What to Include
• My Oracle Support
• Emergency Response
• Collecting System Information with show support-info
• System Crash
• What else to include
• Summary

Troubleshooting Signaling

• Objectives
• Topics
• Topic: Monitoring and Troubleshooting Signaling Using Statistics
• The show and display Commands
• The Commands for Application Statistics
• Format of show sipd <method> Output
• Example: show sipd invite
• Format of the show sipd <non-method> Output
• The Measurement Window
• Format of the show mbcd <transaction> Output
• What SIP Interfaces Are There?
• Is the SIP Packet Sent to the SIPD task?
• What Is the Architecture Configured in the SBC?
• What Are the Statistics per Realm?
• How Are the INVITE Transactions on a Particular Realm?
• What Are the Active Session Statistics?
• What Are the Active SIP Session Statistics?
• Clearing Active SIP Session?
• monitor session – What Are the Runtime SIP Session Statistics?
• Are There Any sipd Errors or Events?
• Are There Dropped Packets – ACLI?
• Are There Dropped Packets – GUI?
• Are There Dropped Packets – ACLI?
• Are There Dropped Packets – GUI?
• Practice
• Topic: Troubleshooting Policy-Based Routing
• Routing Option: Routing Based on Time of Day?
• Routing Option: Routing Based on SIP Method?
• Routing Option: Routing Based on Cost?
• Routing Option: Routing Based on Codec?
• Routing Option: Routing Based on To Header or Request-URI?
• How Do You View Local Policy Statistics – ACLI?
• How Do You View Local Policy Statistics – GUI?
• Examples of Local-Policy Configuration Issues
• Examples of Routing Issues
• No Local Policy Match Found
• An Unintended Route Is Selected
• Retransmissions
• Topic: Troubleshooting Session Agents
• Session Agent Constraints
• Session Agent Constraints Configuration
• Constraints on a Specific SIP Method
• Key Points on the Rates
• Key Points on the Rate Calculations
• Key Points on the Rate Windows
• Example: Burst and Sustain Rate
• Monitoring Session Agent
• Troubleshooting the 503 Response
• Practice
• Topic: Troubleshooting Registration Issues (Access/Backbone Environment)
• ACLI Commands for Monitoring Registrations
• How Are the REGISTER Transactions on the Entire SBC?
• How Are the REGISTER Transactions on a Particular Realm?
• How Are SIP Registrations?
• Is Registration of an EP Cached in the SBC?
• How Do You Sort Registration Cache Entries?
• How Do You Clear Registration Cache?
• Common Registration Issues
• Issue: Registration Cache Priority for Routing
• Issue: EP Registered, but Can’t Make Calls
• Issue: Registration Overload
• Example: Registration Overload
• Issue: CPU Overload
• Issue: CPU Overload – Data to Collect
• Example: Data to Collect
• Issue: CPU Overload – Cause and Solutions
• Practice
• Summary

Troubleshooting Media

• Objectives
• Topics
• Topic: Basic Media Concepts
• Media Flow (Conceptual View)
• Media Flow
• Media Timers
• Media Timers Configuration
• NAT Entries in the Lookup Table
• Example: NAT Entry
• Correlation of Media Timers
• What Does the init Timer Tell You?
• What Does the subsq Timer Tell You?
• What Does the max Timer Tell You?
• Timer Sweeps
• Example: Media Timers in the Lookup Table Call-on-Hold
• Example: Media Timers in the Lookup Table Call with Media Issues
• Practice
• Topic: How NAT Entries Are Built
• How Many Flows for a Single SIP Call?
• What NAT Entries Are in the Lookup Table?
• How Are the NAT Entries Filled?
• Summary of NAT Entries
• Practice
• Topic: Middle Box Control Daemon (MBCD)
• MBCD Overview
• MBCD Terminology
• Media Offer/Answer Process Flow
• Example: SIP INVITE and MIBOCO Transaction
• Viewing MBCD Transactions
• Viewing MBCD Errors
• Practice
• Topic: Troubleshooting Media Issues
• Challenges of Troubleshooting in Production Environments
• Questions to Ask When Media Problems Occur
• Information to Gather When Troubleshooting Media
• show mbcd realms
• monitor media command – Real Time Statistics
• Summaries of the show nat Command
• show nat flow-info by-addr
• Example: Troubleshooting One-Way Audio
• Example: Troubleshooting Call-on-Hold
• Practice
• Summary

Troubleshooting High Availability

• Objectives
• Topics
• Topic: HA Overview
• Virtual HA Addressing
• Physical HA Addressing
• High Availability Process
• BERPd Engine
• wancom Communications
• BERPd Advertisements
• Topic: Checkpointing
• HA Checkpointing
• State Checkpointing Operation – Journal Entries
• Configuration Checkpointing
• Configuring Checkpointing Parameters
• Example: Configuration Checkpointing
• Signaling Synchronization
• Example: Configuration Checkpointing
• Media Checkpointing
• Media Checkpointing Parameters
• Example: Media Checkpointing
• Topic: HA States and State Transitions
• BERPd Machine States
• Boot Actions of HA Peer
• Node State Transitions
• Topic: HA Operations
• Events Triggering Switchover
• Loss of Heartbeat Switchover
• Physical HA Addressing
• HA Media Interface Keep Alive
• Alarming Subsystem
• Alarm Reporting
• Process Watchdog
• Topic: HA Connectivity
• Media Interface Link Detection and Gateway Polling
• Expanded Gateway Polling
• HA Geographic Redundancy
• HA Parameter Adjustments
• Summary