With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
trkUnAckedFramerFrameCrcType
trk Un Acked Framer Frame Crc Type
1.3.6.1.4.1.562.2.4.1.60.2.2.11.1.3
This attribute defines the type of CRC used. The CRC value calculated is appended to the end of the frames transmitted to the link. The CRC value is removed from the end of frames received from the link and checked for correctness. NoCrc means that CRC is not used.
Back to Nortel-Magellan-Passport-UnackTrunksMIB MIB page.
IPHost Network monitor allows you to monitor trkUnAckedFramerFrameCrcType 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 secure routers right now.