Today, I got a chance to setup some bandwidth limiting on our Cisco ASA Firewall. The goal was to choke the speed of traffic going to our backup server to 250Mb/s. As our backup traffic goes through a firewall here’s how I did it on the my ASA5520s
First Define the traffic I want to choke using an access-list:
access-list backup_traffic extended permit ip any host BACKUP01
Then create a policy map to and set the speed
policy-map backup_traffic class backup_traffic police input 250000000
Then apply the policy map on the interface
service-policy backup_traffic interface outside
All done! That was easy.