When redistributing routes from MP-BGP to OSPF, which three are loop prevention mechanisms? (Choose three)
A.
Tag field.
B.
Down bit.
C.
Time To Live field
D.
Site of Origin field
Explanation:
The tag field prevents cross-domain routing loops for lsa type 5 Site of origin is used when multible customer sites are using the same AS and therefore use "as-override" or "allow-as" has been configured. It is not relevant to OSPF