Since chassis alarms have been added for Cisco routers, we've been getting triple alarms every time one of our routers loses connectivity. One for the loss of ICMP contact, one for blade status being unknown, and one for the chassis being down. This seems to fly in the face of the fault isolation concept. While the chassis alarms are certainly useful in some contexts, they are not useful in all contexts, and not everyone uses the modeled hardware the same way. There should be a switch to enable/disable chassis modeling on a device by device basis.