Refer to the exhibit. Router RT-1 chooses one path to network 198.133.219.0/24. Indicate
the reason Router RT-1 chooses this “best” path.
RT-1# show ip bgp 198.133.219.0
BGP routing table entry for 198.133.219.0/24 version 75
Paths: (2 available, best#1, table Default-IP-Routing-Table)
Advertised to update-groups
!
5005 7007 31250
128.107.254.2 (meteric 782) from 128.107.2.2(127.107.2.2)
Origin IGP, metric 2100, localpref 100, valid. internal, best
3003 6006 31250
128.107.255.2 from 128.107.255.2(128.107.0.3)
Origin incomplete, metric 2500, localpref 100, valid, external
A.
In making its decision about the best path, RT-1 gives precedence to the origin code.
B.
In making its decision about the best path, RT-1 gives precedence to the BGP MED
values.
C.
IP address 128.107.2.2 is lower than 128.107.255.2.
D.
In making its decision about the best path, RT-1 prefers the IGP metrics.
E.
RT-1 prefers internal BGP routes.
F.
IP address 128.107.254.2 is lower than 128.107.255.2.
Explanation:
Recall the route selection decision process in BGP:
Consider only (synchronized) routes with no AS loops and a valid next hop, and then:
