Smooth round-trip time (SRTT)-The number of milliseconds it takes for an EIGRP packet to be sent to this neighbor and for the local router to receive an acknowledgment of that packet Uni-directional link (one-way-neighborship). – Hub will not query the spoke since it’s configured as stub, But spoke will query the HUB if there a change on routing table.ģ. – But hub query all the spoke because hub is aware of the change and none of the spoke configured as stub. – Spoke will not query the hub because they don’t know the changes. – Spoke01 will never know that spoke 01 is down. Can’t be use as transit, only advertise connected and summary routes. Note: Don’t change the SIA timer up.(how long your’e willing to allow your network not to converge. Stub / Filter / Summary and Summary Boundaries. ![]() Query Range/Scope – Important (Design Problem) What should be considered when scaling eigrp In IPSEC SA – You don’t want spoke to spoke traffic split horizon help to put in blackhole. Hub and Spoke (Data center fabric “leaf/spine”(havent seen)). (maybe because ospf more preferred because they can do traffic engineering.ġ. Note: theres no whitepaper that eigrp can be use indata center fabric. and you’ll advertising only to all only 8 paths. Setting up your maximum-paths ex 8 and you build 32 alternate path everywhere. Query chain become longer and then the neighbor adjacency dead timer could cause lots of problem with SIA(Never Converge).Ģ. ![]() EIGRP is the only routing protocol that has a backup path to each destination.ĮIGRP only advertise what’s in its local table.ġ. Metric weight K1=1, K2=0, K3=1, K4=0, K5=0įor EIGRP network 2 routers play a key rule in determining the best path and the backup path. Incoming update filter list for all interfaces is not setĭefault networks flagged in outgoing updatesĭefault networks accepted from incoming updates Outgoing update filter list for all interfaces is not set Split-horizon route advertisement is a method of preventing routing loops in distance-vector routing protocols by prohibiting a router from advertising a route back onto the interface from which it was learned. NOTE: Setting the maximum-path to 1 disables load balancing. Maximum Path – router configuration command, up to 32 equal-cost entries can be in the routing table for the same destination. ![]() First we need to understand some of eigrp features.
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