Symptom
The FEX port is unable to report CRC error as output under the 'show interface' statistics and consequently the ifOutErrors will show zero for CRCs.
N7K# show interface Eth140/1/20 counters detailed | grep CRC
Output CRC Errors: 9349243
N7K# sh int eth140/1/20 | begin TX
TX
2400119045 unicast packets 4113508 multicast packets 29453184 broadcast packets
2443036010 output packets 808455945693 bytes
91758 jumbo packets
0 output error 0 collision 0 deferred 0 late collision
0 lost carrier 0 no carrier 0 babble 0 output discard
65198 Tx pause
11 interface resets
snmpwalk -v1 -c private 172.21.25.241 ifName | grep 140/1/20
IF-MIB::ifName.529204416 = STRING: Ethernet140/1/20
snmpget -v1 -c private 172.21.25.241 ifOutErrors.529204416
IF-MIB::ifOutErrors.529204416 = Counter32: 0
Conditions
no known conditions at this point.
