The error mask associated with the TDC test. Each bit in the mask represents a specific error. The errors from least significant bit to highest significant bit are: bit 1 - TD nonexistent on destination port bit 2 - TD disabled on destination port bit 3 - TD not assigned to destination port bit 4 - TD filtered on destination NNI port bit 5 - destination port is NNI bit 6 - destination port is craft bit 7 - destination FDB test failed bit 8 - destination administrative state down bit 9 - destination operational state down bit 10 - destination port connectivity mismatch error bit 11 - destination port type mismatch bit 12 - destination port mode mismatch error bit 13 - destination MIB query failed bit 14 - destination system error bit 15 - invalid destination port bit 16 - destination port is CPU bit 17 - destination port mode mismatch warning bit 18 - destination port connectivity mismatch warning bit 19 - default priority used on destination bit 20 - IP not assigned on destination oel2 port bit 21 - static entry exists on destination port bit 22 - destination FDB table full warning bit 25 - Source Uni Not configured for TDC test. bit 26 - Source Uni Endpoint Admin State Disable for TDC test. bit 27 - Source Uni endpoint or TDI not configured for TDC test. bit 33 - TD nonexistent on source port bit 34 - TD not assigned to source port bit 35 - source FDB test failed bit 36 - source administrative state down bit 37 - source operational state down bit 38 - source system error bit 39 - no response bit 40 - could not get trace information bit 41 - could not get time information bit 42 - source MIB query failed bit 43 - TD disabled on source port bit 44 - invalid source port bit 45 - all ports down on the source node bit 46 - unknown error bit 47 - source FDB test failed bit 48 - static entry exists on source port bit 49 - no FDB entry for destination MAC, unicast aborted bit 50 \226 RTT threshold exceeded