Today, 02:14 AM
Please review, I think the correct answer is "Set the AD 100 under RIP Process on R2"
R1 advertises 10.1.1.0/24 to R2 via RIP (AD 120)
R2 redistributes into EIGRP --> R4 learns it (AD 170) [D EX]
R4 advertises to R3 via EIGRP (AD 170) [D EX]
R3 redistributes EIGRP into OSPF --> R2 learns it via OSPF (AD 110) [O E2]
R2 prefers OSPF (110) over RIP (120)
R2 installs wrong route - > Next-hop = R3 instead of R1
Routing Loop, but if we change the AD to 100 under RIP on R2, then R2 prefers RIP route hence no loop, issue solved
R1 advertises 10.1.1.0/24 to R2 via RIP (AD 120)
R2 redistributes into EIGRP --> R4 learns it (AD 170) [D EX]
R4 advertises to R3 via EIGRP (AD 170) [D EX]
R3 redistributes EIGRP into OSPF --> R2 learns it via OSPF (AD 110) [O E2]
R2 prefers OSPF (110) over RIP (120)
R2 installs wrong route - > Next-hop = R3 instead of R1
Routing Loop, but if we change the AD to 100 under RIP on R2, then R2 prefers RIP route hence no loop, issue solved