Troubleshooting BGP Anycast Routing Nodes (5545)
Technical Overview
Engineering breakdown of Troubleshooting BGP Anycast Routing Nodes (5545). Bare‑metal hardware performance requires isolated kernel parameters, precise BGP community handling, and deterministic ECMP hashing. This guide walks through symptom classification, packet‑capture correlation, and control‑plane verification steps that map directly to Kubernetes kube‑proxy IPVS mode and MetalLB speaker deployments.
Common Failure Modes
- Route Flap Dampening – Excessive withdraw/re‑advertise cycles on 5545.
- AS‑Path Mismatch – Upstream peers receiving inconsistent AS‑PATH due to mis‑configured
bgp confederation. - Health‑Check Misalignment – Kubernetes
readinessProbesucceeding while BGP session is down.
eBPF/XDP kernel filter evaluates TCP/UDP frames directly on server NIC.