IBM AIX 7.1 – Common Problem 083 – Diagnosis and Fix

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

mkwpar fails to attach a network interface during WPAR creation.

Environment & Reproduction

Triggered by reused IP, missing en alias, or unconfigured netcf.

Root Cause Analysis

Network specification block in the WPAR spec does not match host.

Quick Triage

Run mkwpar -n wparname with -p / -o to capture full diagnostic output.

Step-by-Step Diagnosis

Check lswpar -N and lsattr -El enX on the host LPAR for free aliases.

Solution – Primary Fix

Pre-create the alias with chdev -l enX -a alias4=ip,netmask before mkwpar.

Solution – Alternative Approaches

Alternative: define the netconfig in /etc/wpars/.cf and rerun.

Verification & Acceptance Criteria

Verify with lswpar -N wparname that the interface is Active.

Rollback Plan

Run rmwpar -p wparname to revert a half-built WPAR cleanly.

Prevention & Hardening

Document allocated IPs in IPAM to avoid future collisions.

Related Errors & Cross-Refs

Related: 0960-660 mkwpar errors and netcfgctl messages.

Related tutorial: View the step-by-step tutorial for aix-7.1.

View all aix-7.1 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

IBM Docs: Workload Partitions network configuration.