F5CAB5

BIG-IP Administration Support and Troubleshoot

Part of F5 Certified Administrator, BIG-IP

Targets: Product version not specified in the blueprint
Blueprint source: F5 Certification blueprint F5-CAB.0425 (official, relayed by PRIME 2026-07-21) ↗

Independent study aid built from the public exam blueprint. Not affiliated with, authorized by, or endorsed by F5. Objectives are transcribed and mapped by hand, so this page may contain mistakes or may have fallen behind the vendor's current material: exam objectives, versions, numbering and availability all change without notice. Treat F5's own certification portal as the source of truth and verify against it before you book anything.

F5CAB5: BIG-IP Administration Support and Troubleshooting

F5CAB5.01 Determine resource utilization
What to know:
- Distinguish between control plane and data plane resources
- Identify CPU statistics per virtual server
- Interpret Statistics for interfaces
- Determine Disk utilization and Memory utilization
On this site: CMP: The Cores You Paid For, and the iRule Lines That Give Them Back
Tools: f5-bigd-thread-calculator
F5CAB5.02 Identify network level performance issues
What to know:
- Identify when a packet capture is needed within the context of a performance issue
- Interpret availability status of interfaces
- Identify when drops are occurring
- Identify Speed and Duplex
- Distinguish TCP profiles (optimized profiles)
On this site: Capturing Safely on a Production BIG-IP, Protocol Profiles: Living TCP, Frozen TCP, and the Two Fast Paths
Tools: f5-bigip-tcpdump-builder
F5CAB5.03 Identify the reason load balancing is not working as expected
What to know:
- Consider persistence, priority group activation, rate/connection limits
- Identify misconfigurations (incorrect health checks, action on service down, etc.)
- Identify current availability status
On this site: BIG-IP Load-Balancing Methods, and What Each One Weighs, How LTM Health Monitors Decide Up or Down, BIG-IP Persistence Methods, and What Each Keys On
Tools: bigip-ltm-lb-simulator
F5CAB5.04 Identify the reason a virtual server is not working as expected
What to know:
- Identify the current availability status of the virtual server
- Identify conflicting/misconfigured profiles
- Identify misconfigured IP address and/or Port
On this site: BIG-IP Virtual Server Types, and What Each One Actually Does, Profiles on a Virtual Server
F5CAB5.05 Identify the reason a pool is not working as expected
What to know:
- Identify the reason a pool member has been marked down by health monitors
- Identify a pool member not in the active priority group
- Identify the current configured state of the pool/pool member
- Identify the current availability status of the pool/pool member
On this site: How LTM Health Monitors Decide Up or Down, BIG-IP Pools and Load-Balancing Methods
F5CAB5.06 Given a scenario, review basic stats to confirm functionality
What to know:
- Interpret traffic object statistics
- Interpret network configuration statistics
On this site: Reading BIG-IP Status: Dashboard, Network Map, TMSH, and netstat
Tools: f5-tmsh-config-explainer
F5CAB5.07 Given a scenario, interpret traffic flow
What to know:
- Explain application client-server communication
- Interpret traffic graphs (Interpret SNMP results)
On this site: Where Do the Requests Go? Simulating BIG-IP LTM Distribution

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