I think the 3 implementation of BOGONS though they compliment they addressess different issue.
Take note that BOGON in the ACL includes your own network (claims it came from the inside network, yet arrives on the outside interface - unless you configure CEF totake care of spoofing). Blocking BOGONS using ACL also frees up CPU processing from your router, instead of processing incoming connections from BOGONS, router will drop it immediately.
Take note that this includes your prefix (Remember to add more specific non-null routes so that the packets travel to their intended destination). This frees up also CPU processing from your router, some host/s inside your domain may accidentally/intentionally initiate connection to BOGONS. instead of processing them, the router will just route it to NULL.
3. Finally BGP
This avoid injecting BOGONS into the routing table. Frees up memory as well.
Just for the sake of discussion, for example you have the network 192.168.16.0.0/16. Your route it to NULL as "ip route 192.168.0.0 255.255.0.0 NULL". Then you should have a more preferred route like "192.168.1.0 255.255.255.0 gateway_ip_address"
So that IP Address within 192.168.0.0/16 that is not currently assigned or routed, when the router received a connection to them, it will route it to NULL. This is very useful specially for those who are trying to map your network.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.