The distance bgp 110 90 120 command and the distance bgp 120 90 110 command will cause internal Border Gateway Protocol (iBGP) routes to have the same administrative distance (AD) as internal Enhanced Interior Gateway Routing Protocol (EIGRP) routes. When multiple routes to the same destination network exist and each route uses a different routing protocol, a router prefers the routing protocol with the lowest AD.

ADs for a routing protocol can be manually configured by issuing the distance command in router configuration mode. The syntax of the distance bgp command is distance bgp external-distance internaldistance localdistance. The externaldistance value configures the AD for external BGP (eBGP) routes. The internal distance value configures the AD for iBGP routes. The localdistance value configures the AD for local BGP routes. For example, the distance bgp 110 90 120 command configures an AD of 110 for eBGP routes, an AD of 90 for iBGP routes, and an AD of 120 for local BGP routes. Internal EIGRP routes have an AD of 90; therefore, the distance bgp 110 90 120 command configures iBGP routes to have the same AD as internal EIGRP routes.
The distance bgp 90 110 120 command and the distance bgp 120 110 90 command will cause iBGP routes to have the same AD as Open Shortest Path First (OSPF), not internal EIGRP. The distance 90 120 110 command and the distance bgp 110 120 90command will cause iBGP routes to have the same AD as Routing Information Protocol (RIP), not internal EIGRP.