eigrp feasible successor explained

Three Labeled Cards Defining Successor As The Route In Use, Feasible Distance As The Local Router'S Total Cost, And Feasible Successor As A Pre-Verified Instant Backup
CCNA

Successor, Feasible Successor, and Feasible Distance

DUAL relies on three closely related concepts to decide which route goes in the routing table and which routes stand ready as instant backups. This guide defines each one precisely, works through a real Feasibility Condition check using the same topology and numbers established in How to Calculate EIGRP Metric, and covers how OSPF’s fundamentally...

Muhammad Khattak 8 min read
Timeline Showing Eigrp'S History From Its 1992 Introduction As A Cisco-Proprietary Protocol Through A 2013 Ietf Draft Submission To Its Actual Open-Standard Publication As Rfc 7868 In May 2016
CCNA

Introduction to EIGRP

Enhanced Interior Gateway Routing Protocol (EIGRP) was introduced by Cisco in 1992 as an advanced distance-vector routing protocol, originally running only on Cisco devices. It remained Cisco-proprietary for over two decades before becoming an open, multi-vendor standard — a milestone worth getting the date right on, since it’s commonly misstated. From Proprietary Protocol to Open...

Muhammad Khattak 8 min read
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