NAS read latency caused by bad SFP
Applies to
ONTAP 9
Issue
- Slow read performance is reported on NAS shares
- CRC errors are reported on a switch port connected to the controller port that host the LIF
Ethernet1/40 is up
admin state is up, Dedicated Interface
Hardware: 1000/10000/25000 Ethernet, address: 748f.c20e.54b7 (bia 748f.c20e.54b7)
Description: itsgbslnasc01n1
MTU 9216 bytes, BW 10000000 Kbit , DLY 10 usec
reliability 253/255, txload 1/255, rxload 1/255
Encapsulation ARPA, medium is broadcast
Port mode is access
full-duplex, 10 Gb/s, media type is 10G
Beacon is turned off
Auto-Negotiation is turned on FEC mode is Auto
Input flow-control is off, output flow-control is off
Auto-mdix is turned off
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
EEE (efficient-ethernet) : n/a
admin fec state is auto, oper fec state is off
Last link flapped 1week(s) 4day(s)
Last clearing of "show interface" counters never
4 interface resets
Load-Interval #1: 30 seconds
30 seconds input rate 11320 bits/sec, 1 packets/sec
30 seconds output rate 29768 bits/sec, 7 packets/sec
input rate 11.32 Kbps, 1 pps; output rate 29.77 Kbps, 7 pps
Load-Interval #2: 5 minute (300 seconds)
300 seconds input rate 6448 bits/sec, 3 packets/sec
300 seconds output rate 17896 bits/sec, 5 packets/sec
input rate 6.45 Kbps, 3 pps; output rate 17.90 Kbps, 5 pps
RX
179794285 unicast packets 180564 multicast packets 243884 broadcast packets
180218733 input packets 149626636212 bytes
0 jumbo packets 0 storm suppression packets
127 runts 0 giants 3426004 CRC 0 no buffer
3426311 input error 0 short frame 0 overrun 0 underrun 0 ignored
0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop
0 input with dribble 0 input discard
0 Rx pause
TX
150701546 unicast packets 10728108 multicast packets 5426639 broadcast packets
166856293 output packets 62138770021 bytes
0 jumbo packets
0 output error 0 collision 0 deferred 0 late collision
0 lost carrier 0 no carrier 0 babble 1889662 output discard
0 Tx pause