EC2 ENA DMA & Connection Tracking Failure Diagnostics
Data strictly extracted from official AWS troubleshooting documentation. Click the symptom below to get the targeted diagnostic commands.
🚨 Step 1: What specific error symptom are you experiencing?
Please click the most accurate description:
Quick Reference Table
| # | Scenario | Key Error Signal | Primary Diagnostic |
|---|---|---|---|
| 5 | ENA RX Page Allocation Failure | queue_N_rx_page_alloc_fail: N | ethtool -S eth0 | grep page_alloc + /proc/meminfo |
| 6 | ENA TX/RX DMA Mapping Errors | queue_N_tx_dma_mapping_err: N | ethtool -S eth0 | grep dma + dmesg | grep iommu |
| 7 | ENA RX Refill Partial Failure | queue_N_rx_refil_partial: N | ethtool -S eth0 | grep refil + free -h |
| 8 | conntrack Limit Exhausted | conntrack_allowance_exceeded: N | cat /proc/sys/net/netfilter/nf_conntrack_count + upgrade instance type |