i have a question
Adminstrative distance determines the trust worthiness of routing protocol
For example if routerA receives update 10.0.0.0 from rip and ospf, routerA will consider ospf update because ospf had ad Of 110 while rip has ad of 120.
Ebgp has ad of 20 while ibgp has ad of 200 .
Thus ebgp is more trust worthy than ibgp
however when i look at the selection process, i found the following:
2 ) local preference
3) as path
5) ibgp over ebgp
i may have misplaced the attributes in the list .
So if router receives update 10.0.0.0
from ebgp and ibgp, router should intall ebgp update because ebgp has ad of 20 but i read in cisco book this is not the case.
router will consider the attributes of the path to select the best path.
any idea why AD is not considered in bgp the way Ad is considered for rip and ospf to determines the best routing source then best path ?
thanks alot and have good day.