From: Adam Elghafri (ccie.adam@gmail.com)
Date: Wed Jul 16 2008 - 07:47:06 ART
ok.. i ve done volume 3 labs + first five labs of volue 2
what i noticed is that the solution always do the followint no matter what:
when rip and ospf are matually redistrebuted===> under rip process> distance 109
when eigrp and ospf are matually redistrebuted ==> under ospf
process>distance of external 171...
i dont see any need for this !!!!!
PLUS... what i found out and concluded at is the following golden rulde:
when there is 2 points of redistribution==> then always always pup the
metric to a high level
ex.
#router ospf
-router)#redistribute eig 10 subnets metric 200
or
#router rip
-router)#redistribute eig 10 metric 8
or
#router eigrp 10
-router)#redistribute ospf 1 metrik 1 100000 1 1 1
(note BW=1 is worst, 100000 for delay is worse enough, rest are 1's as
they are not into the equation)
with this strategy, i always get a loop-free topology!
now i thought of all the possible combinations of redistributions out
there (almost all).. and to what i concluded at... if u pup the metric
up.. no matter what.. it will become loop-free...
so why the confusion of puping up/down the distance or tagging or whatever..
Mr. Petr.. Scott.. i need ur opinion
==========================================================
(very corner note to be mentioned here... eigrp acts veryyy wiredly
when u have 2 points of redistribution, check this pic out:
http://tinypic.com/view.php?pic=2n9jgn7&s=4
in R3:
R3(config)#router eig 10
R3(config-router)#redistribute connected route-map LOOPBACK metric 1 1 1 1 1
in R2:
R2(config)#router ospf 1
R2(config-router)#redistribute eig subnets
in R1
R1(config)#router eig1 10
R1(config-router)#resdistribute ospf 1 metric 1 100000 1 1 1
R1#sh ip eig topo
P 10.0.0.0 through R2 FD 79898465464
from R2 79898465464/0
from R3 5645/457
did u noticed what i noticed.. the DUAL is taking the higher cost route
(ofcourse non of them will make to the routing table... as the ospf
one will dominate...but i want to point to what is happenning in the
routing table)
sorry for the long msg.. but i want to put a final conclusion for redistribution
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