Routing

I'm attemping to advertise and external route into OSPF, on the condition that ANOTHER router in the table exists....I thought I had it with the 'from condition'  policy statement, but it didn't perform the way that I expected with OSPF, then I read that it only has an affect when used with bgp export statements.  Are there are techniques that work for OSPF?

Alternatively, is there any way to have OSPF advertise say a directly connected route (or link) into OSPF, but only if the router is VRRP active for that link?

As far as I know the conditional advertising works with any protocol,not only bgp. Here is an example of advertising rip routes into ospf only when a route exist in inet.0 table:

mx5t# run show route protocol rip logical-system r1

inet.0: 30 destinations, 30 routes (30 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.16.16.0/29     *[RIP/100] 1d 00:38:19, metric 2, tag 0
                    > to 172.27.0.30 via ge-1/1/3.200
172.16.20.0/24     *[RIP/100] 1d 00:38:19, metric 2, tag 0
                    > to 172.27.0.30 via ge-1/1/3.200
172.16.21.0/24     *[RIP/100] 1d 00:38:19, metric 2, tag 0
                    > to 172.27.0.30 via ge-1/1/3.200

mx5t# show protocols ospf
export [ export-rip export-direct ];
area 0.0.0.0 {
    interface all;
}

mx5t# show policy-options policy-statement export-rip   
from {
    protocol rip;
    condition ospf-route;
}
then accept;

mx5t# show policy-options condition ospf-route
if-route-exists {
    172.27.255.5/32;
    table inet.0;
}

mx5t# run show ospf database logical-system r1 external | match 172
Extern  *172.16.16.0      172.27.255.1     0x80000001    34  0x22 0xc35e  36
Extern  *172.16.20.0      172.27.255.1     0x80000001    34  0x22 0xc155  36
Extern  *172.16.21.0      172.27.255.1     0x80000001    34  0x22 0xb65f  36

mx5t# run show route logical-system r1 172.27.255.1

inet.0: 31 destinations, 31 routes (31 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.27.255.1/32    *[Direct/0] 1d 00:54:55
                    > via lo0.1

When 172.27.255.1 disappear from inet.0, the ospf stop advertising rip routes:

mx5t# run show route logical-system r1 172.27.255.5    

[edit logical-systems r5]

mx5t# run show ospf database logical-system r1 external | match 172    

[edit logical-systems r5]

Thanks mihaigabriel, I think this might be a Junos version issue, the literature I was reading I thinkw as for 9.5, and I tested on a J2300 running 9.3....what version are you running on the device you posted those examples from?

i'm running 11.4R2.14

I did some testing on 10.4R1.9 and it seemed to work there, thanks for the input.