Administrative distance
Administrative distance table
| Route Source | Default Distance Values |
|---|---|
| Connected interface | 0 |
| Static route | 1 |
| EIGRP summary route | 5 |
| EBGP | 20 |
| Internal EIGRP | 90 |
| OSPF | 110 |
| IS-IS | 115 |
| RIP | 120 |
| External EIGRP | 170 |
| Internal BGP | 200 |
Change protocol administrative distances
OSPF
router ospf 1
distance ospf intra-area 105 inter-area 105 external 125Changes the AD to 105 for intra-area and interarea routes, and changes the AD to 125 for external routes
EIGRP
router eigrp 100
distance eigrp 80 105Changes the AD to 80 for internal EIGRP routes and changes the AD to 105 for EIGRP external routes
BGP
router bgp 65001
distance bgp 30 200 220Changes the AD to 30 for external BGP routes, 200 for internal BGP routes and 220 for local BGP routes
RIP
router rip
distance 20 192.168.0.1 0.0.0.0Changes the AD to 20 for a specific route.
Floating static route
A floating static route can be used as a backup route when there is a secondary path available. It will be use if the current route is gone.
Administrative distance ouput
show ip route 192.168.1.0
Routing entry for 192.168.1.0/24
Known via “eigrp 20“, distance 90, metric 2174976, type internal