Blackholing
BKNIX provide well-known BGP Community for Blackholing in Route Server.| BGP Community | Description |
| 65535:666 | Blackhole |
Currently we offer the following options:
- Blackhole route must be marked with community 65535:666
- Size of Blackhole route should specific as /32 for IPv4 and /128 for IPv6 only.
- Advertising Blackhole route to certain BGP neighbors respecting BGP community filtering described on this page.
Caveat : Blackhole route must be advertise from the range of their own address space!
Example
Config guide
router bgp (your AS) . . . address-family ipv4 network your.own.ip.address mask 255.255.255.255 route-map bknix-rs-rtbh . . . exit-address-family ! ! route-map bknix-rs-rtbh permit 10 set community 65535:666 #In order to announce to specific peers, you can add other communities defined in this section. ! ip route your.own.ip.address 255.255.255.255 Null0 #Because BGP will not announce prefix doesn't exist in your routing table
