低端交换机培训ppt课件

1、低端交换机架构简介Disclaimer StatementsAbout PeteroguangPeterorguang is not the best marketing guy.Please contact peterorguang when u need switch.About RouterRouter is simple.Router is not so simple as described in this PPT.About PPTPig-like Presales Tools.It is an error-not-free & final-version PPT.It is a

2、typical JFF PPT.转发控制管理功能分解系统软件操作系统硬件根底SW-TableSW-LogicMACPHYMAC-LearningSW-TableTable controlSignaling:- configure- stp like protocol UI: CLI/SNMP/TR069 System Manager Protocol Module ManageTask ManagerArchitecture ManagerR-registers: Hard counters/state regInterrupt/Exception ManagerOS-Basic servic

3、ecoredopraTask-manQueue-manTimer-manINT/EXE manMemory-manW-registers: controlSummary硬件构造软件构造关键流程硬件构造典型低端交换机硬件架构CPLD：粘合逻辑CPLDCPUDev1Dev2LocalbusLEDRSTWDGADTCPU: PPC8241交换芯片：BCM5645-1交换芯片：BCM5645-2软件构造ros构造USER执行流管理内存管理中断&异常管理insdatastkTDinsdatastkTDinsdatastkTDinsdatastkTDKERNELdopras-code调度器createru

4、nkillmodifydopramallocfreemalloc323232646464128128128102410241024dopraaddstubdelstubinsdatastkinsstkdatavectorset vectorexeint系统软件构造关键流程主机数据流In the very old pastXMac-PhyFW TaskPINT hndEnablesnd to Link12notifyrxdmaint3456PPPPPPPPPNowadaysRdWrINT hndMac-PhyFW Task表管理流程片外缓存交换芯片ddrpci dmavendor-sdkdriv

5、erProtocolVendor原语协议驱动交换芯片异常管理流程.LOAD R3, R17JZMP R3.0 x000AdatatextstackVSIFmac_rcvIp_fastswArp_procSPIPTCBIP= 0 x000ASP=0 xA00AR1= 0 x000BR2=0 xAB0AR30= 0 xXXXXR31=0 xXXXXstore context,Call hook;Restore contextVectorException Taskos processing,Call dorpra hook;resetClose DogSave Context to NVRAMSet EX