I'm not sure exactly what you want to do, but if you are trying to configure a blackholed route it should look like this:
1. Add a static route to Null0 on all routers in the network. Make sure it's an unused address, like 10.x.y.z
2. On the advertising router
router bgp xxx
redis static route-map sample
route-map sample per 10
match tag 100
set ip next-hop 10.x.y.z (set it to whatever
your Null0 route is)
set local 50
set origin igp
set comm no-export
To set off the black hole route:
1. On the advertising router (from step 2 above) add a static route to null0 for the network you wish to blackhole
ex. ip route 1.1.1.0 255.255.255.0 null0 tag 100
2. The route (1.1.1.1 in our case) is now redistributed via the redistribute static command in bgp, this sets the next hop to the 10.x.y.z network, that router will then advertise this route to all its bgp peers.
3. The bgp peers put this route in thier route table with a next hop of 10.x.y.z. Which is the route to null0 we configured earlier in all routers on the network. So when a router gets a packet destined for the 1.1.1.0 network it will send it to null0 thus dropping the packet
One thing to note here is depending on your platform you should disable icmp unreachables with the no ip unreachables command. Some platforms use the cpu to generate unreachables, so your cpu could go through the roof if you are sending unreacables.
