Guest level monitoring in vSphere environment

Hi Folks,

I have a vSphere 5.1 environment, and monitoring all ESXi Hosts, vCenter, VMs running using EMC SMARTS AM-PM, ESM and alerts directed to Global Console. 

Recently I saw Alerts were not being reported correctly for some the changes happened in the infrastructure. So would like to check few things, could you please help me  find answers to these? Where can I find the licensing info for each Manager, ESM, AM-PM etc, especially if I want to know expiry dates, licensing features etc. And finally, what attributes I should enable to monitor these events?

1. Changes in VM network
2. Guest monitoring -- if guest operation system crashed
3. Network isolation - network is not reachable
4. Guest Filesystem - no free space left (any thresholds??)
5. Resource consumption, CPU, Memory etc - high cpu and memory usage (any thresholds??)

Thanks,

/T