I have it displayed in a small dashboard as we have 3 IDCs in different parts of the world connected to multiple firewalls, so two most critical gateways are in the dashboard reporting two things - that connectivity to IDC is alive (new events are arriving) and total number of users. INT represents 41k chassis with 4 SGM blades each (green tick agaist IDC means that connection to IDC is handled by that specific SGM). EXT is a regular non-chassis gateway. Error seen below unfortunately is part of R76 code on chassis - occasionally it fails to respond to pep s p a command, so my script then reports Error. Code itself is a simple bash script that calls pdp conn adqa or pdp conn idc (depending on GW version) and then pep s p a. Nothing overly complicated 

I'm actually planning to "upgrade" this to have all gateways included that run IA. But haven't got time to do it yet..