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Cisco Bug: CSCvv15017 - dnx TM: inconsistent credit request profile setting, which could result queue stuck condition

Last Modified

Jul 27, 2020

Products (1)

  • Cisco Network Convergence System 5500 Series

Known Affected Releases


Description (partial)

Traffic drop condition may occur due to current delay parameter setting. 
Following trace can be seen while setting delay parameters:
fia_brcmsdk_error_msgs 0/0/CPU0 t2939 TP3145883, fia_print_to_log_file[194]: bcm_petra_cosq_delay_tolerance_level_set[4350]: unit:0 bcm_petra_cosq_delay_tolerance_level_set:4350 -> EmptyQueueMaxBalance (which is 4480) [+ is_max_credit_balance_can_exceed (1) * max_credit_value (6144)] must be equal or lower than backOffExit (which is 7168), otherwise could result queue stuck in Off state.

There is no known condition seen. It is based on BRCM recommendation.
Possible case could be intemittent traffic.
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