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Cisco Bug: CSCvs94507 - MDS: show interface ips displays huge counters incrementing without any traffic

Last Modified

Jun 09, 2020

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

8.4(2.220)

Description (partial)

Symptom:
IPStorage interface counters displayed incorrectly and increment incorrectly.

Example 1:

<pre>
MDS# show interface ips3/1
IPStorage3/1 is up
    Hardware is IPStorage, address is 00cc.fcea.3107
    Internet address is 17.1.1.2/24
    MTU 2500  bytes
    Port mode is IPS
    Speed is 10 Gbps
    Beacon is turned off
    Auto-Negotiation is turned on
    5 minutes input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
    5 minutes output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
    17179869188 packets input, 258 bytes <<<<<< Huge number can be seen
      0 multicast frames, 0 compressed
      0 input errors, 0 frame, 0 overrun 0 fifo
    4 packets output, 228 bytes, 0  underruns
      0 output errors, 0 collisions, 0 fifo
      0 carrier errors
</pre>

Example 1:

<pre>
MDS# show interface ips2/2

IPStorage2/2

    5 minutes input rate 31260080 bits/sec, 3907510 bytes/sec, 53527 frames/sec
    5 minutes output rate 1868748424 bits/sec, 233593553 bytes/sec, 101144 frames/sec
    6514309445220297968 packets input, 27680099255226 bytes
      213 multicast frames, 135471858486632 broadcast frames
      0 errors, 0 queue drops, 0 if-down drops, 0 RED drops
      23236218 bad ether type drop, 0 bad protocol drops
    916344764909 packets output, 1451126951966822 bytes, 0  underruns
      155477816115200 multicast, 31542 broadcast
      0 errors, 0 collisions, 0 arp drops, 99798796392726528 if-down drops <<<<<< Huge number can be seen
</pre>

Conditions:
All using IPStorage interfaces in NX-OS 8.1(1a) up to the fixed release of NX-OS 8.4(2).
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