With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
lseIntPortTxReject
lse Int Port Tx Reject
1.3.6.1.4.1.81.19.1.2.1.1.31
The number of Tx buffer full observed on a specified port, from the line toward the High-speed bus.
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IPHost Network monitor allows you to monitor lseIntPortTxReject on Avaya device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Avaya switches right now.