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Router Redistribution Question

davidcriollo
Level 1
Level 1

davidcriollo_0-1704063834396.png

On above topology, I'm trying to create or simulate a loop with the route 192.168.200.1. I'm expecting to have that route back and forth between R3 and R4 but it is not happenning. Attached table route from R3 and R4 so I can apply the tag filtering to avoid it.

R3

davidcriollo_1-1704064003147.png

 

R4

davidcriollo_2-1704064040239.png

 

Even though it R4 has this route in the ospf database it is not installing it. 

 

davidcriollo_3-1704064267561.png

Please heeelp

 

 

1 SOLUCIÓN ACEPTADA

Soluciones aceptadas

Happy new Year

here the lab show the suboptimal and ROUTING LOOP

R1-R2 EIGRP 100
R1-R3 EIGRP 100
R2-R4 OSPF 100
R3-R4 OSPF 100
there is redistribute between EIGRP and OSPF (two way redistribute) 
Now we redistribute LO 1.1.1.1 in R1 
the prefix must appear in R2 & R3 as D EX but only R3 show that 
R2 learn the prefix via O E2 not via D EX. 
this because the O E2 have AD 110 and D EX have AD 170

check this note 
and you are free to Ask anything 

Screenshot (653).pngScreenshot (654).png

MHM

Ver la solución en mensaje original publicado

3 RESPUESTAS 3

Happy new Year

here the lab show the suboptimal and ROUTING LOOP

R1-R2 EIGRP 100
R1-R3 EIGRP 100
R2-R4 OSPF 100
R3-R4 OSPF 100
there is redistribute between EIGRP and OSPF (two way redistribute) 
Now we redistribute LO 1.1.1.1 in R1 
the prefix must appear in R2 & R3 as D EX but only R3 show that 
R2 learn the prefix via O E2 not via D EX. 
this because the O E2 have AD 110 and D EX have AD 170

check this note 
and you are free to Ask anything 

Screenshot (653).pngScreenshot (654).png

MHM

The firts question would be, Why R3 is learning it from the right source and R2 does not??

it randomly, you can see R2 or R3 have routing loop (suboptimal) path 
I close lab open again and you can see now the R3 learn correct path and R2 not
MHM 

Screenshot (659).pngScreenshot (660).png