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555
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Port error value shows on snmpwalk but not on interface via ssh

ajwhite0
Level 1
Level 1

Hello,

If I run a snmpwalk to check port errors on gig 1/0/2 on this 3850 it has 103 errors:

snmpwalk -v 2c -c public 10.1.3.18 .1.3.6.1.4.1.9.2.2.1.1.12
iso.3.6.1.4.1.9.2.2.1.1.12.1 = INTEGER: 0
iso.3.6.1.4.1.9.2.2.1.1.12.2 = INTEGER: 0
iso.3.6.1.4.1.9.2.2.1.1.12.8 = INTEGER: 0
iso.3.6.1.4.1.9.2.2.1.1.12.9 = INTEGER: 103

If I use another tool:

ifInErrors{ifAlias="X-3850 UPLINK",ifDescr="GigabitEthernet1/0/2",ifIndex="9",ifName="Gi1/0/2"} 103

However if I SSH onto the switch I can't locate this 103 value

  sh int gig 1/0/2
GigabitEthernet1/0/2 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet, address is 5486.bce6.8e82 (bia 5486.bce6.8e82)
  Description: X-3850 UPLINK
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Half-duplex, 100Mb/s, link type is auto, media type is 100BaseFX SFP
  input flow-control is on, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 17:39:10, output hang never
  Last clearing of "show interface" counters 09:55:32
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

If I clear the counters 103 still appears when I run the first 2 commands, but not on the show int gig 1/0/2 command.

Why is this?

Thanks

4 Replies 4

andrewswanson
Level 7
Level 7

Hi
Does interface Gi1/0/7 have the "130" errors?

I just checked a 3850 and 1/0/4 has the ifindex of "4" whereas 1/0/7 has the ifindex of "9" which is the interface that seems to report 130 errors in your output:

show snmp mib ifmib ifindex gi1/0/2
Interface = GigabitEthernet1/0/2, Ifindex = 4

show snmp mib ifmib ifindex gi1/0/7
Interface = GigabitEthernet1/0/7, Ifindex = 9

hth
Andy

show snmp mib ifmib ifindex gi1/0/2
Interface = GigabitEthernet1/0/2, Ifindex = 9

Joseph W. Doherty
Hall of Fame
Hall of Fame

Very possible clear interface resets the interface counters but not the MIB counters.

I think you are right, I think the only way to clear the mib counters is by rebooting the switch.