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Cisco Bug: CSCuj82951 - Drops packets larger than 1518 B after upgrade 15.0(2)SG3 to 15.0(2)SG7

Last Modified

Feb 27, 2018

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

15.0(2)SG6

Description (partial)

Symptom:
Switch with supervisor WS-X4516-10GE starts dropping packets larger than 1518 B after code upgrade from15.0(2)SG3 to 15.0(2)SG7. We see following also -

sh platform software interface gix/y all | in RxOversizePacketThreshold
RxOversizePacketThreshold : 1518

While in working condition it is  RxOversizePacketThreshold : 1570


Issue is seen on line cards WS-X4448-GB-SFP, WS-X4448-FE-SFP, WS-X4248-FE-SFP, WS-X4248-GB-SFP.

Conditions:
Code upgrade from 15.0(2)SG3 to 15.0(2)SG7.  Sometimes, it is also observed after a line card reset while running with code 15.0(2)SG7.
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