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Unformatted text preview: Not all routers have. Console Port – allows for local configuration of device (management port) User Interface Dual UART – Universal Asynchronous Receiver/Transmitter – 2 access methods (DUAL) through AUX and Console ports CompactFlash Memory Card – stores Cisco IOS software image on either SIMM or PCMCIA Boot ROM – holds bootstrap, ROM monitor and optionally scaled-down version of IOS software; shares flash memory with NVRAM NVRAM – holds startup config System Control ASIC – controls the flow of data between memory, interfaces and the CPU SDRAM DIMMs – holds running config, routing table & other dynamic structures Boot-up Process Performing the POST Execute Bootstrap Loader Locate the IOS Load the IOS Locate the config file Execute the config file or enter setup mode Routers Operate at layers 1, 2, and 3 (Physical, Data Link, Network)...
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- Spring '08
- Computer network, Flash memory, Non-volatile memory