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Cisco Bug: CSCvs50868 - Fed memory leak in 16.9.X related to Netflow

Last Modified

Sep 01, 2020

Products (1)

  • Cisco Catalyst 9300 Series Switches

Known Affected Releases

16.9.4

Description (partial)

Symptom:
The output of "show processes memory platform sorted" indicates the RSS counter is increasing over time for 'fed main event' process.

FED tracelogs might contain errors from fnf, for example:

{fed_F0-0}{1}: [asic_fnf] [15754]: UUID: 0, ra: 0, TID: 0 (ERR): AFD-INFRA:FNF Failed to read flow table
{fed_F0-0}{1}: [asic_nfl] [15754]: UUID: 0, ra: 0, TID: 0 (ERR): AFD-INFRA:NFL curr_fmask_entry is NULL! Mask-Id 2 Lut 1, asic 0

{fed_F0-0}{1}: [fnf] [15756]: UUID: 0, ra: 0, TID: 0 (ERR): verify sync failed. flow_hdl=0x126 context=0x7f4e64669228 is_wdavc_flow=0 wdavc_flow_handle=0x0
{fed_F0-0}{1}: [fnf] [15756]: UUID: 0, ra: 0, TID: 0 (ERR): ad_read: failed flow verify. flow_hdl 0x126 context=0x7f4e64669228

Conditions:
Catalyst 9000 switch with the same flow monitor configured on a port-channel and regular interface.
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