I have just setup some third party monitoring on all the interfaces of my cisco ASA 5550 firewall in order to monitor the bandwidth of all the interfaces. The monitoring has performed an auto discovery and it has picked up on the 'internal-data0/0' and 'internal-data1/0' interfaces. The interfaces are now being monitored for bandwidth usage with threshold notifications preset to warn me if bandwidth exceeeds 85Mbps. I know all of the other physical interfaces are 1Gbps capable so I would like to set the thresholds near this limit but not sure on what I should be doing for the 'Internal-data" interfaces. Can someone shed some light on what these interfaces are for and what there bandwidth limitations are?