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Cisco Bug: CSCvv12483 - High QFP load due to guestshell's NAT outside statement when using AWS gateway routes/subnet assoc

Last Modified

Jul 28, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

17.2.1

Description (partial)

Symptom:
High QFP load when using AWS routing ( routes & subnet associations) plus IMIX traffic.
When running " show platform hardware qfp active datapath utilization summary ", you can see the QFP load being high:

show platform hardware qfp active datapath utilization

T-VPC-CSR-1#show platform hardware qfp active datapath utilization 
  CPP 0: Subdev 0            5 secs        1 min        5 min       60 min
Input:  Priority (pps)            0            0            0            0
                 (bps)            0            0            0            0
    Non-Priority (pps)       298381       297908       211459        17629
                 (bps)    863862408    862461312    612182288     51020784
           Total (pps)       298381       297908       211459        17629
                 (bps)    863862408    862461312    612182288     51020784
Output: Priority (pps)            0            0            0            0
                 (bps)            0            0            0            0
    Non-Priority (pps)       298368       297905       211457        17628
                 (bps)    696416720    695320480    493549040     41147568
           Total (pps)       298368       297905       211457        17628
                 (bps)    696416720    695320480    493549040     41147568
Processing: Load (pct)           91           91           64            5 <---- 90% with 690 MB 



Conditions:
AWS routes plus subnet associations
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