PTX devices having FPC's which are BT chip based will encounter the following error. These are seen when accessing right blank memory location.

CMError: /fpc/2/evo-cda-bt/0/cm/0/btchip/0/dlu_table_prot_intr_d_right_bnk

Following cmerror will be seen when dlu block experience sram memory error

Nov 6 18:08:41 2023 abc-fpc2 resiliencyd[19922]: Cmerror Op Set: btchip: chip_num:0 intr_full_name:dlu_table_prot_interrupts_status_detected_right_bank intr_bit_pos:3 log_err_reg:0x00000008 log_addr_reg:0x00006b0c multipl

e_err_reg:0x00000000 (URI: /fpc/2/evo-cda-bt/0/cm/0/btchip/0/dlu_table_prot_intr_d_right_bnk)

Nov 6 18:08:42 2023 abc-fpc2 resiliencyd[19922]: cmerror_level_decrement: for /fpc/2/evo-cda-bt/0/cm/0/btchip/0/dlu_table_prot_intr_d_right_bnk (0x4506d8), scope: pfe, category: memory, severity: minor, module: btchip, ty

pe: dlu_table_prot_intr_d_right_bnk

Nov 6 18:08:42 2023 abc-fpc2 resiliencyd[19922]: Performing action log for error /fpc/2/evo-cda-bt/0/cm/0/btchip/0/dlu_table_prot_intr_d_right_bnk (0x4506d8) in module: btchip with scope: pfe category: memory level: minor

Nov 6 18:08:42 2023 abc-fpc2 resiliencyd[19922]: <FPC 2> ASIC Error detected errorno 0x000006d8

Nov 6 18:08:42 2023 abc-fpc2 resiliencyd[19922]: Cmerror Op Clear: btchip: chip_num:0 intr_full_name:dlu_table_prot_interrupts_status_detected_right_bank intr_bit_pos:3 log_err_reg:0x00000000 log_addr_reg:0x00006b0c multi

ple_err_reg:0x00000000 (URI: /fpc/2/evo-cda-bt/0/cm/0/btchip/0/dlu_table_prot_intr_d_right_bnk)

DLU (Destination lookup) which stores forwarding table in on-chip SRAM memory is reporting interrupt while accessing the right blank memory location and getting cleared within the next polling period.   

If this error is reported continuously it points to consistent issue in the SRAM memory location.

Reboot of FPC is needed to recover from the memory error condition.