Redistribution Notes – AD Manipulation

  • Manipulating administrative distance (AD) is another way to help with a mutual redistribution scenario.
  • EIGRPs has different ADs for internal and external (redistributed) routes
  • OSPF and RIP have the same AD no matter where the route orginated.
  • This means that routes redistributed into OSPF may be used instead of a local RIP route.
    • AD 110 (OSPF) beats 120 (RIP) every time.
  • The distance subcommand allows you to change the AD on specific routes from specific neighbors.
  • This example changes the AD of the route to 10.0.0.0/16 advertised from 1.1.1.1 to 121.
    • This will make this router prefer a RIP route to the same destination.


Corrections are encouraged.

Aaron Conaway

I shake my head around sometimes and see what falls out. That's what lands on these pages.

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1 comment for “Redistribution Notes – AD Manipulation

  1. JCisco
    June 30, 2011 at 1:17 pm

    Hi Aaron,
    Why have you used the wildcard mask “0.255.255.0” in the access-list ? Should it not be 0.0.255.255 ??

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