With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
ethPortMJLP
eth Port MJLP
1.3.6.1.4.1.81.12.3.1.1.7
Value ON of this attribute describes an internal MJLP (MAU Jabber Lockup Protection) error sensed by the internal hardware mechanism of a repeater. This mechanism is activated to protect the repeater ports from a jabber condition (excessive long transmission) detected on one of the port. Valid for LE140XTF.
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IPHost Network monitor allows you to monitor ethPortMJLP 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.