Administrative Distance is the measure of the "trustworthiness" of a route. Administrative Distance is a number which value can vary from 0-255, where 0 is absolutely trusted, and 255 cannot be trusted at all. The Administrative Distance of a static route is 1 and that of a directly connected route is 0.
Route Type | Administrative Distance |
Connected | 0 |
Static | 1 |
EIGRP Summary Route | 5 |
EBGP | 20 |
EIGRP (Internal) | 90 |
OSPF | 110 |
IS-IS | 115 |
RIP | 120 |
EGP | 140 |
EIGRP (External) | 170 |
iBGP (External) | 200 |
Unknown | 255 |
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