LSA

Practical DevOps Architecture

Jul 25, 2019 · Fundamentals

OSPF Loop‑Avoidance Mechanisms: How Different LSA Types Prevent Routing Loops

This article explains how OSPF avoids routing loops by using various LSA types—Type‑1, Type‑2, Type‑3, Type‑4, and Type‑5—and the role of ABRs, backbone requirements, and SPF calculations in maintaining a loop‑free network topology.