From: srivera7@optonline.net
Date: Thu Feb 05 2004 - 23:38:55 GMT-3
Hello Group,
Need some advise. What is the best solution for preventing routing loops when redistributing into mutiple routing domains. Changing administrative distances is one solution and using distribute list is another solution.
Lets say for example we have
2 routers in RIPv1 domain mutually redistributing to 2 routers in an OSPF domain. The 2 routers in the OSPF domain are also mutally redistributing to 2 routers in an EIGRP domain.
RP1, RP2 (RIPv1) <--> R01,R02 (OSPF) <--> RE1,RE2 (EIGRP)
Rip domain is advertising 150.8.0.0/16. When redistributed into ospf it comes back from EIGRP with a lower admin distance. OSPF routers see this and think EIGRP domain is best path to this network. Routing loop occurs. What I did was under the OSPF routing process issue "distance ospf external 200". Routing loop is gone and I can reach this network via RIP that way is advertised. Not sure if this is the best solution.
Which is the best solution for prevent routing loops ? Do you know of any good links ?
Cheers,
William
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