This is the weekly Network freak roundup for 2026-W37. It collects the latest practical networking articles published this week, so the X feed can stay quiet while readers still get all links in one place.
This week's articles
- LACP Load Balancing Troubleshooting: Why One Flow Uses Only One Link
- NVIDIA InfiniBand for AI Clusters: NDR vs XDR, Rail Design and Acceptance Tests
- AI GPU Cluster Network Calculator: Ports, Bandwidth and Switch Sizing for 8–512 GPUs
- Palo Alto NAT Troubleshooting: Why the Rule Matches but Traffic Still Fails
- OSPF Stuck in ExStart or Exchange: MTU and DBD Troubleshooting
- F5 BIG-IP Pool Member Down but App Works: Health Monitor Troubleshooting Matrix
- OSPF DR/BDR Election Explained: Priority, Router ID and Failover
- NCCL Slow AllReduce Troubleshooting: GPU, RDMA and Rail Test Matrix
- OSPF Stub vs Totally Stubby vs NSSA: Differences and Default Routes
- Palo Alto Firewall HA Failover Test Plan: Sessions, NAT and Routing Checklist
- OSPF Virtual Links Explained: Area 0, Configuration and Troubleshooting
- OSPF vs IS-IS Explained: Areas, Levels and Interview Answers
- Prisma SD-WAN Branch Migration Checklist: Circuits, Cutover and Rollback
For topic hubs, see Start Here, Data Center Networking, AI Infrastructure & Automation and BGP Table Watch.
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