Symptom

TCAM(IP Route Table) entries exhausted and service down after interlink connected between C9606 and C6506 switches IP Route Table EM/LPM I 212992 162750 76.41% 162218 0 532 0 IP Route Table TCAM I 1536 1535 99.93% 1517 5 13 0 Jun 19 00:29:13 KST: %FED_L3_ERRMSG-3-RSRC_ERR: R0/0: fed: Failed to allocate hardware resource for fib entry due to hardware resource exhaustion - rc:2054 Jun 19 00:29:13 KST: %FMFP-3-OBJ_DWNLD_TO_DP_FAILED: R0/0: fman_fp_image: EOS Choice 0xb75 download to DP failed Jun 19 00:29:52 KST: %FMFP-3-OBJ_DWNLD_TO_DP_FAILED: R0/0: fman_fp_image: EOS Choice 0xb75 download to DP failed Jun 19 00:29:54 KST: %FED_L3_ERRMSG-3-fib_err: R0/0: fed: Platform unicast routing fib module encountered modifying fib error in FED Jun 19 00:30:04 KST: %FED_L3_ERRMSG-3-fib_err: R0/0: fed: Platform unicast routing fib module encountered modifying fib error in FED Jun 19 00:30:04 KST: %FED_L3_ERRMSG-3-RSRC_ERR: R0/0: fed: Failed to allocate hardware resource for fib entry due to hardware resource exhaustion - rc:2054 Jun 19 00:30:27 KST: %FMFP-3-OBJ_DWNLD_TO_DP_FAILED: R0/0: fman_fp_image: LENTRY 0x564a69634538 (InLabel 668 Table 0) Flags 0 download to DP failed

Conditions

Workaround

Apply the suggested SDM template, EM/LPM table has been increased from 213k to 262k and L2/L3 multicast are disabled. Routing entries can be installed in HW .

Further Problem Description

After inter-link is connected between Cat9600 and C6500 switches. C9606_TEST#show platform hardware fed active fwd-asic resource tcam utilization Load for five secs: 1%/0%; one minute: 8%; five minutes: 11% Time source is NTP, 18:10:54.218 KST Mon Jun 27 2022 Codes: EM - Exact_Match, I - Input, O - Output, IO - Input & Output, NA - Not Applicable CAM Utilization for ASIC [0] Table Subtype Dir Max Used %Used V4 V6 MPLS Other ------------------------------------------------------------------------------------------------------ IP Route Table EM/LPM I 212992 165922 77.90% 165469 0 453 0 IP Route Table TCAM I 1536 1535 99.93% 1528 5 2 0 !!!