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Cisco Bug: CSCvv03198 - ISR4k - Input rate counter in shutdown interface stuck in value different from 0

Last Modified

Sep 14, 2020

Products (1)

  • Cisco 4000 Series Integrated Services Routers

Known Affected Releases

16.9.4

Description (partial)

Symptom:
Counter '30 second input rate' for an interface that was shutdown stays stuck in some value instead of being 0.

For instance:

<div style="font-family:courier;white-space:pre;">
B#show int gi0/1/0
GigabitEthernet0/1/0 is administratively down, line protocol is down (disabled)
  Hardware is NIM-ES2-4, address is d8b1.9058.7558 (bia d8b1.9058.7558)
  Description: Link to R2
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not supported
  Auto-duplex, Auto-speed, link type is auto, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:07:09, output 00:06:36, output hang never                         <<< Last input 7 min ago.
  Last clearing of "show interface" counters never
  Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 204000 bits/sec, 216 packets/sec                          <<< Counter stuck at 204000.
  30 second output rate 0 bits/sec, 0 packets/sec
     11504 packets input, 1391792 bytes, 0 no buffer
     Received 4 broadcasts (376 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 376 multicast, 0 pause input
     0 input packets with dribble condition detected
     528 packets output, 92954 bytes, 0 underruns
     0 output errors, 0 collisions, 2 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

</div>

Conditions:
Conditions for this to happen are unknown.
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