F5 BIG-IP LTM Specialist: Maintain and Troubleshoot (Exam 301b)

When a BIG-IP LTM pair fails over unexpectedly, an upgrade boots into a blank config, or users report slow apps, many IT teams rely on one senior engineer or outside help. This course spreads that maintenance and troubleshooting knowledge across the team.

Role fit: Built for network security admins and IT Practitioners with three to five years of enterprise network experience who already run BIG-IP LTM. It works well for small platform teams and for larger NetOps groups that need consistent runbooks for maintaining and troubleshooting BIG-IP LTM environments.

Time investment: About 11 hours across 12 skills. The course is structured so Training Managers and Team Leads can assign focused sections without pulling engineers away from production work for extended blocks.

Risk and change management: The training stresses safe production habits:

• Including the configuration when booting into a new upgrade volume
• Testing after removing unused objects that other objects may still reference
• Using AVR capture filters so traffic recording doesn't overload a device
• Disabling SSL key logging after troubleshooting
• Returning debug logging to normal levels once work is done

These habits support change-control and audit expectations.

How CBT Nuggets helps: Each skill ends with validation review questions and scenarios to confirm understanding. Team Leads can place this course in a Playlist with related F5 training and use Team Reporting to track completion across the team.

IT teams use this training to keep BIG-IP LTM environments stable, upgradeable, and easier to troubleshoot under production pressure. The course is built around the situations practitioners actually face: an upgrade that boots into a blank device, a ConfigSync pair that stops talking, a custom monitor that marks healthy pool members down, or a spike in sessions behind a user complaint about slowness.

• Safer upgrades with less unplanned downtime: Your team learns to install new software to a separate boot volume, carry the configuration forward when booting to the new location, confirm the active version with TMSH, and test before calling the upgrade complete.
• Faster root-cause analysis: Practitioners use tcpdump, Wireshark, and SSL decryption to trace HTTPS and application failures. They also work through packet loss, congestion, and communication issues that can affect synchronization and failover behavior, with an emphasis on validating changes and avoiding unnecessary debug settings in production.
• Leaner, lower-risk configurations: Team Leads can direct staff to use iHealth to find unused objects and monitors that consume resources. The course reinforces checking object references and testing before deletion so cleanup doesn't break production.
• Better visibility and alerting: Your team configures SNMP, syslog, and email alerting with the right logging levels. They also use AVR filters and dashboards to spot anomalies, such as concurrent sessions jumping well above normal, without overloading the device by capturing everything.

The result for IT Directors is fewer escalations, quicker recovery when things break, and a team better prepared for the F5 301b exam.

Knowledge

• How built-in TCP profiles, such as LAN-optimized and WAN-optimized profiles, affect throughput, and how to match them to client-side and server-side traffic
• How SNMP OIDs and MIBs are organized hierarchically to expose CPU, memory, pool, and virtual server data
• Syslog facilities and logging levels zero through seven — emergency through debug — and why debug logging should stay out of production
• The SSL/TLS handshake process and common client and server HTTP headers
• How configuration review supports safe consolidation, including checking object references before removing functions from an LTM device configuration
• How iHealth flags unused objects and monitors, and why references must be checked before deleting anything

Ability

• Install BIG-IP software to a new boot volume, include the configuration when booting, and confirm the upgrade with tmsh show sys software status
• Configure remote syslog and email alerting, then test them with the logger command
• Capture traffic with tcpdump and use the tcpdump SSL provider feature to support SSL session analysis in Wireshark, then turn it off afterward
• Diagnose slowness, packet drops, and misbehaving monitors with packet captures and the tmctl utility
• Build AVR dashboards and filtered captures that spot traffic anomalies without overloading the device
• Use targeted logging and configuration review to troubleshoot availability or traffic-flow issues, then return logging to normal levels