With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
memLargestFrag
mem Largest Fragment
1.3.6.1.4.1.11.2.3.9.3.1.4.5
The size of the largest fragment in the free pool in Kbytes. This represents the largest request for memory that can be fulfilled by the terminal.
Back to hp-700rx MIB page.
IPHost Network monitor allows you to monitor memLargestFrag 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 multiplexers right now.