With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
hpicfEntityTimestamp
HP Integrated Communication Facility Entity Timestamp
1.3.6.1.4.1.11.2.14.11.1.2.4.1.5
The value of the agent's sysUpTime at which this logical network device was last reinitialized. If the entity has not been reinitialized since the last reinitialization of the agent, then this object has a zero value.
Back to hp-icf MIB page.
IPHost Network monitor allows you to monitor hpicfEntityTimestamp on Hewlett Packard device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.