JunOS Conditional routing

It's really lovely how straight-forward the JunOS conditional routing is. There is a quick example how to configure it. In the example we are monitoring the IS-IS route 172.27.255.2/32 and if it's in the routing table we will generate 172.27.0.0/16 route. The important bit here is the generate route and the policy which is in the end of the 'generate route' statement.

[edit logical-systems r1 routing-options]
root@m# show
generate {
route 172.27.0.0/16 policy isis-present;

}

policy-statement isis-present {
term 1 {
from {
protocol isis;
level 1;
route-filter 172.27.255.2/32 exact;
}
then accept;
}
term 2 {
then reject;
}
}