08-16-2022 01:43 PM
I have a couple of N9K-C93108TC-EX switches seeing about half of the packets coming from a server being errors. I can't find any detailed counters showing what the error is. Where should I be looking?
Thanks.
switch# sh int e 1/8
Ethernet1/8 is up
admin state is up, Dedicated Interface
Hardware: 100/1000/10000 Ethernet, address: 4ce1.7548.677f (bia 4ce1.7548.677f)
Description: Slot 1/Mid Left
MTU 1500 bytes, BW 1000000 Kbit , DLY 10 usec
reliability 211/255, txload 1/255, rxload 1/255
Encapsulation ARPA, medium is broadcast
Port mode is access
full-duplex, 1000 Mb/s
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 on
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 53week(s) 6day(s)
Last clearing of "show interface" counters 00:17:05
0 interface resets
Load-Interval #1: 30 seconds
30 seconds input rate 2888 bits/sec, 3 packets/sec
30 seconds output rate 7272 bits/sec, 7 packets/sec
input rate 2.89 Kbps, 3 pps; output rate 7.27 Kbps, 7 pps
Load-Interval #2: 5 minute (300 seconds)
300 seconds input rate 2752 bits/sec, 3 packets/sec
300 seconds output rate 6680 bits/sec, 6 packets/sec
input rate 2.75 Kbps, 3 pps; output rate 6.68 Kbps, 6 pps
RX
2499 unicast packets 8 multicast packets 0 broadcast packets
5582 input packets 416407 bytes
0 jumbo packets 0 storm suppression bytes
0 runts 0 giants 0 CRC 0 no buffer
3075 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
6569 unicast packets 1963 multicast packets 3588 broadcast packets
12120 output packets 924506 bytes
0 jumbo packets
0 output error 0 collision 0 deferred 0 late collision
0 lost carrier 0 no carrier 0 babble 0 output discard
0 Tx pause
interface Ethernet1/8
description Slot 1/Mid Left
switchport
switchport access vlan 1
08-16-2022 01:59 PM
switch# show interface counters errors
share output please
08-16-2022 02:05 PM
switch# sh interface ethernet 1/8 counters errors
--------------------------------------------------------------------------------
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards
--------------------------------------------------------------------------------
Eth1/8 0 0 0 14862 0 0
--------------------------------------------------------------------------------
Port Single-Col Multi-Col Late-Col Exces-Col Carri-Sen Runts
--------------------------------------------------------------------------------
Eth1/8 0 0 0 0 0 0
--------------------------------------------------------------------------------
Port Giants SQETest-Err Deferred-Tx IntMacTx-Er IntMacRx-Er Symbol-Err
--------------------------------------------------------------------------------
Eth1/8 0 -- 0 0 14862 0
--------------------------------------------------------------------------------
Port InDiscards
--------------------------------------------------------------------------------
Eth1/8 0
08-16-2022 02:28 PM
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCur72541
this is bug BUT
"""This is a non-impacting cosmetic issue. It is due to the port receiving packets where the actual number of bytes in the payload are not equal to type length field."""
it not effect your network
and personally not prefer upgrade if the bug is cosmetic.
08-16-2022 02:44 PM
Thanks for the info. That link states "Workaround: Upgrade to a fixed release version of code, such as 7.0(3)I1(1) or newer" which is from 2015. My switches are on 9.3(5) from 2020 so would not think it can be the same bug.
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