With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
traceSessionX25VcSubnetRecoveries
trace Session X25 Vc Subnet Recoveries
1.3.6.1.4.1.562.2.4.1.106.3.2.2.12.1.9
This attribute counts the number of successful Vc recovery attempts. This attribute is used as an indicator of how many times the Vc path is broken but can be recovered. This attribute is useful to record the number of network path failures.
Back to Nortel-Magellan-Passport-X25TraceRcvrMIB MIB page.
IPHost Network monitor allows you to monitor traceSessionX25VcSubnetRecoveries on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Nortel multiplexers right now.