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In rare situations, the following NP soft errors may occur and will cause the linecard to be reloaded. Typhoon (block/memory): o PRS/KMEM_LOW, KMEM_HIGH o SRCH/LKP_KEY_MEM o RSV/KMEM_LOW, KMEM_HIGH o SMI/INT0_MEM to INT3_MEM o SMI/CAM_FIFO o TM_QC/FD_DRAM o TM_QC/QC_QD_DRAM Tomahawk (block/memory): o PRS/KMEM_LO, KMEM_HIGH o LKP2GRPS/HASH_LKP_KEY o RSV/KMEM_LO, KMEM_HIGH o TM_QC/QC_QD_DRAM o TM_QC/EMEM_PD_DRAM o TM_QC/IMEM_PD_DRAM All of the above errors will now be repaired, recovered via NP fast reset, or ignored instead of a linecard reload. Examples of each of the above error are included in the "Further Problem Description section".
These are all rare occurrences. They are true soft errors so there is no specific trigger. High altitudes will cause increases in the soft error rates.
There are no workarounds. If one of these errors does occur on a router which does not have the changes associated with this bug ID, the linecard will be reloaded and no further recovery is required.
Here are some examples of Typhoon NP errors that required a linecard reload prior these changes: prm_ser_check: Parity error detected: NP 3, block 0x8 (PRS), offset 11, memid 557, name KMEM_HIGH1, addr 0x0000000b, bit 2147483648, ext info 0xffffffff 0xffffffff 0xffffffff 0xffffffff, action 2 (Reset) prm_ser_check: Parity error detected: NP 1, block 0xb (SRCH), offset 53, memid 557, name LKP_KEY_MEM_2_5, addr 0x0000000e, bit 2147483648, ext info 0xffffffff 0xffffffff 0xffffffff 0xffffffff, action 2 (Reset) prm_ser_check: Parity error detected: SN FOC155081EP, NP 0, Rev 2, block 0x1d (SMI), offset 14, memid 557, name CAM_FIFO, addr 0x00000026, bit 2147483648, ext info 0xffffffff 0xffffffff 0xffffffff 0xffffffff, single count 0, double count 0, flags 0x4, action 2 (Reset) prm_ser_check: Double-bit ECC error detected: SN FOC155081EP, NP 0, Rev 2, block 0x24 (TM_QC), offset 61, memid 540, name FD_DRAM, addr 0x000000a0, bit 2, ext info 0x00000bf8 0x00000000 0x00000000 0x002eb428, single count 0, double count 0, flags 0x4, action 2 (Reset) Double-bit ECC error detected: SN FOC155081EP, NP 0, Rev 2, block 0x24 (TM_QC), offset 60, memid 118, name QC_QD_DRAM, addr 0x0002cd23, bit 2, ext info 0x0340df48 0x00000003 0x00000000 0xffffffff, single count 0, double count 0, flags 0xc, action 2 (Reset) Here are examples of Tomahawk NP errors that required a linecard reload prior these changes: prm_ser_check: Parity error detected in internal memory: SN FOC1910N0QS, NP 0, uiPhase 3, uiRev 8, block 0x89 (RSV9), offset 32, memid 2115, name KMEM_LOW_4, addr 0x00000002, bit 2147483648, bEndToEnd 0, uiHWMemId 1, ext info 0xffffffff 0xffffffff 0xffffffff 0xffffffff, action 2 (Reset) Parity error detected in internal memory: SN FOC1903NESS, NP 2, uiPhase 3, uiRev 8, block 0x14 (PRS3), offset 33, memid 2115, name KMEM_HIGH_8, addr 0x00000019, bit 2147483648, bEndToEnd 0, uiHWMemId 17, ext info 0xffffffff 0xffffffff 0xffffffff 0xffffffff, action 2 (Reset) Parity error detected in internal memory: SN FOC1910N0QS, NP 0, uiPhase 3, uiRev 8, block 0x89 (RSV9), offset 32, memid 2115, name KMEM_LOW_4, addr 0x00000002, bit 2147483648, bEndToEnd 0, uiHWMemId 1, ext info 0xffffffff 0xffffffff 0xffffffff 0xffffffff, action 2 (Reset)