Summery Soluations to Mutual Redistribution at Multiple Routers

let's say that we have two routers doing Mutual Redistribution between RIP and OSPF and vice versa, we can face suboptimal routing or routing loops sometimes so we have some solutions we can me make in that case:

1- Preventing Suboptimal Routes by Setting the Administrative Distance:
    distance ospf external 180 on both routers to make rip routes more prefer .


2- Preventing Suboptimal Routes by Using Route Tags :
    router ospf 1
    redistribute rip subnets route-map tag-rip-9999
    network 10.1.15.1 0.0.0.0 area 0
   distribute-list route-map check-tag-9999 in
   ! Clause 10, a deny clause, matches all tagged 9999 routes—so those
   ! routes are filtered. Clause 20 permits all other routes, because with no match
   ! subcommand, the clause is considered to “match all.”
   route-map check-tag-9999 deny 10   match tag 9999   !   route-map check-tag-9999 permit 20
   ! tag-rip-9999 matches all routes (it has no match command), and then
   ! tags them all with tag 9999. This route-map is used only for routes taken from
   ! RIP into OSPF.
   route-map tag-rip-9999 permit 10   set tag 9999


3- Using Metrics and Metric Types to Influence Redistributed Routes :