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Cisco Bug: CSCvi85748 - N5k+N2K: error counters increasing on unused ports when SFPs are plugged in

Last Modified

Jul 18, 2018

Products (12)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 5624Q Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5696Q Switch
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Known Affected Releases

7.0(5)N1(1a) 7.1(4)N1(1)

Description (partial)

Symptom:
error counters increasing on unused ports when SFPs are plugged in:

N5k# show interface
Ethernet7/1 is up
0 runts  0 giants  15003 CRC  0 no buffer
Ethernet8/1 is up
0 runts  0 giants  15209 CRC  0 no buffer
Ethernet8/12 is up
0 runts  0 giants  30216 CRC  0 no buffer
Ethernet171/1/1 is down (Link not connected)
4712 runts  0 giants  9 CRC  0 no buffer
Ethernet171/1/2 is down (Link not connected)
4583 runts  0 giants  5 CRC  0 no buffer
Ethernet171/1/3 is down (Link not connected)
4167 runts  0 giants  4 CRC  0 no buffer
Ethernet171/1/4 is down (Link not connected)
6583 runts  0 giants  24 CRC  0 no buffer
Ethernet171/1/5 is down (Link not connected)
5826 runts  0 giants  13 CRC  0 no buffer

Conditions:
SFP's are plugged in, but ports are unused
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