The AD values of the protocols are generally different across different vendors and care must be taken to take this fact into account in case of multi-vendor environments.
Cisco
Directly Connected Interface = 0
Static route = 1
EIGRP summary route = 5
External Border Gateway Protocol (eBGP) = 20
Enhanced Interior Gateway Routing Protocol (EIGRP) - Internal = 90
Open Shortest Path First (OSPF) = 110
Intermediate System to Intermediate System = 115
Routing Information Protocol (RIP) = 120
Enhanced Interior Gateway Routing Protocol (EIGRP) - External = 170
Internal Border Gateway Protocol (iBGP) = 200
Juniper
Directly Connected Interface = 0
Static route = 5
Intermediate System to Intermediate System - Level-1 Internal = 15
Intermediate System to Intermediate System - Level-2 Internal = 18
Routing Information Protocol (RIP) = 100
Summary Route (Aggregate route) = 130
Open Shortest Path First (OSPF) = 150
Intermediate System to Intermediate System - Level-1 External = 160
Intermediate System to Intermediate System - Level-2 External = 165
Border Gateway Protocol (BGP) = 170
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