Even with the variance command a neighbor might not be considered a feasible
successor. Remember a feasible successor is a path whose reported distance
is less than the feasible distance. 

This is a loop prevention method in EIGRP.

Read the section, "Deciding if a Path is Loop-Free" in the document at the
link below

http://www.cisco.com/warp/public/103/eigrp1.html#6

I guarantee a light bulb will come on above your head after you read this.


-----Original Message-----
From: John Neiberger [mailto:[EMAIL PROTECTED]] 
Sent: Thursday, January 31, 2002 7:57 AM
To: [EMAIL PROTECTED]
Subject: Re: Variance for Eigrp...does it actually work?? [7:33835]


I don't really have an answer, this is more of a "me too" email.  I've only
bothered with variance once in a practice lab and I was not able to make it
work even after setting the variance to a ridiculously high number.  No
matter what I did, I was not able to get both EIGRP routes into the routing
table.

At some point I need to go back and figure out why it wasn't working but
I've been avoiding it.  

John

>>> "Cisco Nuts"  1/31/02 12:05:03 AM >>>
Hello,I am testing out the variance command under eigrp and it does not seem
to be working the way it is explained in the CCNP routing guide by
CiscoPress. Any ideas ? Sorry, Long post but need help.I have RTA connected
to RTB and RTC via FR physical intf. running eigrp 1RTB and RTC are
connected to BBR via serials also running eigrp 1BBR is connected to TS via
serial running eigrp 1 and igrp 1TS is connected to REMOTE running rip.RTA
to RTB to BBR have bandwidth = 64 configed.RTA to RTC to BBR have the
default bw = 1.544On RTA, the route to Rip netw. 12. and 13. on Remote show
up via the RTC to BBR to TS to Remote route....which is correct.D EX
12.0.0.0/8 [170/3245056] via 192.168.10.243, 00:12:37, Serial0 D EX
13.0.0.0/8 [170/3245056] via 192.168.10.243, 00:13:42, Serial0 The metric
via RTB to BBR to TS to Remote is 41538560 as inD EX 12.0.0.0/8
[170/41538560] via 192.168.10.242, 00:00:17, Serial0 D EX 13.0.0.0/8
[170/41538560] via 192.168.10.242, 00:00:17, Serial0 After doing the math,(
multiplied 3245056 x 13 to get 42185728 which is greater than 41538560), I
configed a variance of 13 on RTA and expected to see 2 routes to networks
12. and 13. but only 1 route shows up, that thru RTC.Is there a reason
why?Thank you. : 

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