Hi,
The show ip route will show how the particular route installed to the route table.
Codes:
C - connected,
S - static,
R - RIP,
M - mobile,
B - BGP
D - EIGRP,
EX - EIGRP external,
O - OSPF,
IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR,
P - periodic downloaded static route
If the router has learned the same prefix through other protocols the administrative distance will judge. The lower one will take precedence over the lower.
AD's:
Connected 0
Static 1
EIGRP summary 5
EBGP 20
Internal EIGRP 90
IGRP 100
OSPF 110
IS-IS 115
RIP 120
EGP 140
ODR 160
External EIGRP 170
iBGP 200
Unknown 255
Hope it helps,
Krisztian
