Refer to the Exhibit.
— Exhibit –user@router# show policy-options
policy-statement isis-export {
term 1 {
from {
route-filter 172.22.135.0/8 orlonger reject;
route-filter 172.22.135.0/24 orlonger accept;
}
then reject;
}
term 2 {
from {
protocol isis;
route-filter 10.0.0.0/8 longer;
route-filter 10.0.0.0/24 longer accept;
}
then reject;
}
}
— Exhibit —
You are asked to block the 10.0.0.0/8 IS-IS routes from being redistributed into other protocols.

You still want the existing 10.0.0.0/25 IS-IS routes to continue to be redistributed. You have
applied an export policy as shown in the exhibit, however, the 10.0.0.0/8 routes are still being
redistributed.
What is causing the problem?

A.
The policy can only evaluate a single route-filter match for each term.

B.
When the route-filter matching process occurs, the least specific route-filter prefix evaluation is
rejecting the routes.

C.
When the route-filter matching process occurs, the most specific route-filter prefix evaluation is
accepting the routes.

D.
Term 2 should be inserted before term 1.

Explanation: