Theremaybemultipletypesofmemoryintheswitch,suchasFlash(flashmemory),DRAM(dynamicmemory),etc.Thememoryisusedforstorageconfiguration,asadatabuffer,etc.
Theswitchusesthefollowingdifferenttypesofmemory,eachofwhichassiststheswitchindifferentways.
1.Read-onlymemory(ROM)
Thefunctionofread-onlymemory(ROM)intheswitchissimilartotheROMinthecomputer,andismainlyusedforsysteminitializationandotherfunctions.
Asthenameimplies,ROMisaread-onlymemory,andthecodestoredinitcannotbemodified.Ifyouwanttoupgrade,youneedtoreplacetheROMchip.
2.Flashmemory(Flash)
Flashmemory(Flash)isareadableandwritablememory,whichcanstillsavedataafterthesystemisrestartedorshutdown.
3.RandomAccessMemory(RAM)
RAMisalsoareadableandwritablememory,butitsstoredcontentwillbeclearedafterthesystemisrestartedorshutdown.
Inthepast,switchesusedstore-and-forwardorpass-throughswitchingfordataexchangeonnetworkports.Inthestore-and-forwardmode,whentheswitchreceivesaframe,itstoresthedatainthememoryuntilthecompleteframeisreceived.