Must have - The Administrative Distance
Tuesday, December 18th, 2007 |A Must have ….
When a router learn the a network from different sources, it use the administrative distance to build the routing table. Low is best.
Source Administrative Distance
Connected interface 0
Static route 1
EIGRP summary route 5
External BGP 20
Internal EIGRP 90
IGRP 100
OSPF 110
IS-IS 115
RIP 120
Exterior Gateway Protocol 140
On-Demand Routing 160
External EIGRP 170 (when EIGRP is redistributed)
Internal BGP 200
Unknown 255
