Preview Tool

Cisco Bug: CSCuq73506 - Output discards due to Buffer Drops not reported for 40G ports on GEM

Last Modified

Feb 28, 2018

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases


Description (partial)

"Output Discards" part of "show interface" command does not display real packet drops due to Queuing/Buffer drops for  Ports on TORs with GEM cards (Northstar or Donner based).
Please note this is not an issue for Front Ports on Trident chip, issue is only for Front Ports on GEM cards.

Issue is only noticed for front ports on GEM cards (on TORs), but not Front Ports on T2 asic.
Also there is no functional issue (packets conitnue to get dropped during congestion), just that they are not properly reported as "Output Discards" in "show interface Ethernet <x/y>" output.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.