With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
dclVsInvalidAbBits
dcl Vs Invalid Ab Bits
This attribute counts the number of invalid AB bits signals received from the ISC on this channel. The invalid bit setting is 00. This counter wraps to zero when it reaches its maximum.
Back to Nortel-Magellan-Passport-DcmeMIB MIB page.
IPHost Network monitor allows you to monitor dclVsInvalidAbBits 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.