With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
hdlcGiantFrameReceives
hdlc Giant Frame Receives
1.3.6.1.4.1.11.2.14.3.7.9
Count of the HDLC frames received that were larger than the maximum legal size that can be sent on the 802.3 LAN link.
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IPHost Network monitor allows you to monitor hdlcGiantFrameReceives 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 wireless switches right now.