With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
scEthPortFragments
sc Eth Port Fragments
1.3.6.1.4.1.81.28.2.1.1.1.9
The total number of packets received that were less than 64 octets in length (excluding framing bits but including FCS octets).
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IPHost Network monitor allows you to monitor scEthPortFragments on Avaya device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Avaya IP phones right now.