longest prefix match
Determining How a Router Makes a Forwarding Decision by Default
Domain 3.2 | IP Connectivity — 25% of exam Learning Objectives By the end of this lesson, you will be able to: Key Terms Glossary Term Definition Forwarding decision The process by which a router selects one route from its routing table to forward a specific packet toward its destination. Longest prefix match (LPM) The...
Best Route, Routing Table Terms, and the Lookup Process
When a router receives a packet, it doesn’t just glance at the destination address and pick whichever route looks close enough — it runs a specific, hierarchical process to find the single best match. Understanding that hierarchy, and the terminology Cisco uses to describe it, is essential CCNA and CCNP material that goes a level...
Host Forwarding Decisions: How Hosts Actually Route Their Own Traffic
Every networked device, whether it’s a dedicated router or an ordinary laptop, has to decide how to get a packet toward its destination. Routers specialize in this, but end hosts, PCs, servers, phones, make their own forwarding decisions too, using a much simpler process built on subnetting, a minimal routing table, and address resolution. This...