What is redistribution?
The process of exchanging routes between two or more protocols.
Metrics of different protocols
RIPv2 - Hop count
OSPF - Cost
EIGRP - BW + Delay + reliability + load + MTU [ 1000 20000 255 + 1 + 1500]
EIGRP Administrative distance
an AD of 90 means the router were learning internally from eigrp. An AD of 170 means the routes were learned externally (redistributed into eigrp)
Redistributing into OSPF
when redistributing into OSPF use the keyword “subnets” to redistribute classless subnets. if the keyword is not used then only classful subnets will be redistributed.