Administrative Distance of different Routing Protocols | Networks

Route Source	Default Distance Values
Connected interface	0
Static route	1
Enhanced Interior Gateway Routing Protocol (EIGRP) summary route	5
External Border Gateway Protocol (BGP)	20
Internal EIGRP	90
OSPF	110
Intermediate System-to-Intermediate System (IS-IS)	115
Routing Information Protocol (RIP)	120
Exterior Gateway Protocol (EGP)	140
Unknown*	255

Low administrative distance takes precedence in route distribution.

Suppose we have 2 routing protocols RIP and EIGRP; 120 and 100 respectively. EIGRP will be preferred over the RIP because of the administrative distance is 100.

However, Administrative distance can be changed to take precedence

For instance, lets enable RIP route by using distance command to modify distance

Router1#show ip route
Router1(config)#router rip
Router1(config-router)#distance 90

Now check again with show ip route command
You will see that RIP has taken precedence over EIGRP.