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Trying to understand this in EIGRP

muammera
Level 1
Level 1

Assume I have the following simple Network

N1--|RA|-----------|RB|---------|RC|----N2

RA will know about N2 from RB as a sucsessor and RB from RC..

If NA fail, RC will go into Active and send Query to RB which will go to Active state as well and Query RA...

RA receives a Query from RB, which is a successor, which means RA will not query RB if split horizon is enabled....

Will RA go into Acive and Network will not converge untill RA SIA Timer expire?

I tested it, but convergence was a flash and RA logs "Stub Accounting", which i don't understand what does it mean?

My question is what is going on, why did RA flushed its table immidiately?

What will happen if the split horizon is disabled?

1 Reply 1

ERIK LAWAETZ
Level 1
Level 1

RA receives a Query from its successor RB, but RA has no further neighbours.

Therefore it cannot expand the DUAL computation, and it will reply immediately with an Infinite metric (network unreachable).

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