Symptom:
HOW DO I SEE THE ERROR: (PLEASE ATTACH LOGS, DEBUGS, ERROR MESSAGES)
Show interface output was normal and showed traffic counters working.

Truncated logs
SHOW INTERFACE FOR TENGIGABIT ETHERNET INTERFACE
======================================

Interface TenGigabitEthernet0/6 "PUB", is up, line protocol is up
  Hardware is bcm56800 rev 01, BW 10000 Mbps, DLY 10 usec
        (Full-duplex), (10000 Mbps)
  Traffic Statistics for "PUB":
        319134894407 packets input, 319282668454040 bytes
        224337794367 packets output, 38797944586502 bytes
        5988914123 packets dropped
      1 minute input rate 93412 pkts/sec,  93050785 bytes/sec
      1 minute output rate 65078 pkts/sec,  10200544 bytes/sec
      1 minute drop rate, 1484 pkts/sec
      5 minute input rate 89048 pkts/sec,   87453227  bytes/sec
      5 minute output rate 62281 pkts/sec,  10505568 bytes/sec
      5 minute drop rate, 1425 pkts/sec

SNMP WALK SHOWS 0 VALUES FOR COUNTERS FOR ifName.14
----------------------------------------------------------------------------

IF-MIB::ifAlias.14 = STRING: Outside Interface public-sw GE0/10
IF-MIB::ifDescr.14 = STRING: Adaptive Security Appliance 'PUB' interface
IF-MIB::ifOperStatus.14 = INTEGER: up(1)

IF-MIB::ifLastChange.11 = Timeticks: (1100) 0:00:11.00
IF-MIB::ifLastChange.12 = Timeticks: (2700) 0:00:27.00
IF-MIB::ifLastChange.13 = Timeticks: (2700) 0:00:27.00
IF-MIB::ifLastChange.14 = Timeticks: (2041301500) 236 days, 6:16:55.00

IF-MIB::ifCounterDiscontinuityTime.11 = Timeticks: (0) 0:00:00.00
IF-MIB::ifCounterDiscontinuityTime.12 = Timeticks: (2700) 0:00:27.00
IF-MIB::ifCounterDiscontinuityTime.13 = Timeticks: (2500) 0:00:25.00
IF-MIB::ifCounterDiscontinuityTime.14 = Timeticks: (2231958100) 258 days, 7:53:01.00


IF-MIB::ifHCInUcastPkts.13 = Counter64: 846787
IF-MIB::ifInOctets.14 = Counter32: 0    <<<<<<<IN WORKING OUTPUT ARE THESE NON-ZERO
IF-MIB::ifOutOctets.14 = Counter32: 0   <<<<<<<IN WORKING OUTPUT ARE THESE NON-ZERO

IF-MIB::ifName.14 = STRING: PUB
IF-MIB::ifHCInOctets.13 = Counter64: 574843352
IF-MIB::ifHCInOctets.14 = Counter64: 0   <<<<<<<IN WORKING OUTPUT ARE THESE NON-ZERO
IF-MIB::ifHCOutOctets.13 = Counter64: 1272391225668
IF-MIB::ifHCOutOctets.14 = Counter64: 0  <<<<<<<IN WORKING OUTPUT ARE THESE NON-ZERO


Show traffic output was normal for Logical but counters Aggregated Traffic on Physical Interface shows 0
===============================================================
#show traffic
===============================================================
PUB:
        received (in 516784.580 secs):
                64596867512 packets     64347138715537 bytes
                124000 pkts/sec 124514000 bytes/sec
        transmitted (in 516784.580 secs):
                43836661114 packets     7269578529847 bytes
                84003 pkts/sec  14066002 bytes/sec
      1 minute input rate 153088 pkts/sec,  151597062 bytes/sec
      1 minute output rate 105531 pkts/sec,  17820157 bytes/sec
      1 minute drop rate, 1947 pkts/sec
      5 minute input rate 151976 pkts/sec,  150767434 bytes/sec
      5 minute output rate 104763 pkts/sec,  17825133 bytes/sec
      5 minute drop rate, 1939 pkts/sec

----------------------------------------
Aggregated Traffic on Physical Interface <<<<<<THESE COUNTERS SHOULD NOT BE ZERO
----------------------------------------
TenGigabitEthernet0/6:
        received (in 516786.490 secs):
                0 packets       0 bytes
                0 pkts/sec      0 bytes/sec
        transmitted (in 516786.490 secs):
                0 packets       0 bytes
                0 pkts/sec      0 bytes/sec
      1 minute input rate 0 pkts/sec,  0 bytes/sec
      1 minute output rate 0 pkts/sec,  0 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 0 pkts/sec,  0 bytes/sec
      5 minute output rate 0 pkts/sec,  0 bytes/sec
      5 minute drop rate, 0 pkts/sec

Conditions:
HW: ASA5585-S60-2A-K9
SW: ASA 8.4(3)8