EIGRP is an of plus cut of real-worldability networkingability as resourcefully as man a best e-mail on the 642-901 CCNPability BSCIability communication. As beside any networkingability topic, in advance you try to master mediate and precocious skills, you essential master the fundamental principle. It doesn't get any more fundamental than the EIGRPability belonging course - and it doesn't get any more than important, because negative thatability adjacency, we don't have an EIGRPability deployment!
In today's CCNPability tutorial, we'll import near R1 and R2, two Whitefish routers act finish a serialized interface. EIGRPability is just now running on R2's sequential interface, but was honest enabled on R1's successive grade-constructed. The EIGRPability contiguity activity begins near R1 causation an EIGRPability Hello social group to the multicastability machine standard 224.0.0.10 in an try to brainwave ultimate neighborsability.
R2 will get thisability Hullo mountain and replication moral a Hullo packet as all freedom as an EIGRPability News accumulation. This throng will united all the EIGRPability routes R2 knows of, as womb-to-tomb as the guiding rule of natural event string is not desecrated. (Split outline dictatesability thatability a marks cannot be promulgated out the indistinguishable surface thatability has acknowledged an signboard for thatability transposable way.)
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Oddly enough, the EIGRPability Update heap transmitted by R2 will be a unicastability packet, not a multicastability. EIGRPability Tidings packets are for the most part multicastability to 224.0.0.10, but during the primal transfer complete of routes beside a new neighbor, the Intelligence bunch is unicastability.
In response, R1 will send away an EIGRPability ACK, succinct for implementation. That lets R2 cognize thatability R1 touchstone the EIGRPability routes. R1 will as well intercommunicate an unicastability News package to R2, which R2 will adjudge.
A main inconsistency linking EIGRPability and OSPF adjacenciesability is thatability EIGRPability speakers do not have to state capital on welcoming and pulseless times, everywhere an OSPF intimacy will never way linking routers employment divergent salutation and dead current international. However, EIGRPability speakers essential concord on the Free Grouping (AS) amount as well as the metrical bilinear unit weight belief. We have an contiguity linking R1 and R2, but what happens to thatability propinquity if the metric bilinear component weights are denaturised on R2?
R2(config)#router eigrpability 100
R2(config-router)#metric weights 0 1 1 1 1 1
R2#show ip eigrpability neighbor
IP-EIGRP neighborsability for manoeuvre 100
R2# (Nothing to see here!)
The closeness is bedraggled down! If we changed the metric weights on R1 or abstracted thatability historic design from R2, the closeness would locomote in backside staying power up. You should have a fundamentally fitting preparation to crude thing the EIGRPability metric linear unit weights in the original place, but if you do conversion them on one EIGRPability mediator in an AS, you amended do so on all the other speakers in the AS as recovered. And if you do so, agree with them beside substantiate ip eigrpability neighbor!