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EIGRP Feasible Successor Question
BlueUmbrella
Registered Users Posts: 2 ■□□□□□□□□□
in CCNA & CCENT
Hi. I'm hoping someone is able to answer a question for me. I have read that to qualify as a feasible successor, a router must have an AD less than the FD of the current successor and that this is to help avoid loops. Can anyone please explain why this has to be so and how this avoids creating a loop?
Any help would be much appreciated, thanks!
Any help would be much appreciated, thanks!
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Ivanjam
Member Posts: 978 ■■■■□□□□□□
EIGRP Loop Prevention Logic « ipSpace.net by @ioshints
EIGRP Feasible Successor Routes - Packet Life
http://www.techexams.net/forums/ccna-ccent/42562-successor-feasible-successor-eigrp.html
IP Routing: Chapter 4: Enhanced Interior Gateway Routing Protocol (EIGRP)Fall 2014: Start MA in Mathematics [X]
Fall 2016: Start PhD in Mathematics [X] -
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powmia
Users Awaiting Email Confirmation Posts: 322
If a neighboring router says that a route is further away than the route that you currently have... who's to say that neighboring router isn't using YOU as a next hop? -
OptionsBlueUmbrella
Registered Users Posts: 2 ■□□□□□□□□□
I think I understand it a little more now from the information in your replies. I also found this which helped simplify it.
'If, for a destination, a neighbor router tells us that it is closer to the destination than we have ever been, then this neighbor lies on a loop-free route to this destination.' Thank you, I hope I have this right now!