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catalyst 9k/3k crash due to insufficient memory in process PIM register asynchronous tunnel creation Following message might be seen %SYS-4-THRESHOLD_TK: Free Memory has dropped below low watermark. Pool: Processor Free: YYYYYYYY Threshold: YYYYYYY Tracekey: 1#XXXXXXXXXXXXXXXXXXXXX %SYS-4-FREEMEMLOW: Top Allocator Name: *XXXXXX *, PC: :YYYYYYYYYY, Size: XXXXXXX, Count: YYYYY Largest block: XXXXXXXXX %SYS-4-FREEMEMLOW: Top Allocator Name: *YYYYYY*, PC: :XXXXXXXXXXXXXXXXX, Size: YYYYYYY, Count: YYYYYYY Largest block: XXXXXXXXXXXXXXXXXXXXXX %SYS-4-FREEMEMLOW: Top Allocator Name: PIM register asynchronous tunnel creation, PC: :YYYYYYYYYYYY, Size: XXXXXXXXXXXX, Count: XXXXX Largest block: YYYYYYYYY
1)running PIM-SM on the switch 2)holding numbers of RP 3)RP mapping table are reset due to some reason periodically Issue may happen irrelevant to Static or Auto RP
none
This issue happens 16.12.4, 17.3.3 and 17.5.1. Show idb all output will show clue for justification of hitting or not. Ideally Inactive HWIDBs and SWIDBs should be under 1000.Once it shows higher number and gradual increase there is an chance hitting this issue. Example #show idb all Maximum number of Software IDBs XXXXX. In use XX. Maximum number of Micro Software IDBs XXXXX. In use 0. HWIDBs SWIDBs uHWIDBs uSWIDBs Active XX XX 0 0 Inactive X(here) X(here) 0 0 Dirty 0 0 0 0 Total IDBs XX XX 0 0 Size each (bytes) XXXX XXXX XXXX XXXX Total bytes XXXXXX XXXXXX 0 0
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