CCNA英文版08.ppt

? 2002, Cisco Systems, Inc. All rights reserved. ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-2 ? 2002, Cisco Systems, Inc. All rights reserved. 2 Router Startup and Configuration Management ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-3 Objectives pleting this lesson, you will be able to: ? Describe the router boot sequence and explain how to verify that the router booted correctly ? Identify the ponents of Cisco switches and routers ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-4 Router Power-On/Bootup Sequence 1. Perform power-on self test (POST). 2. Load and run bootstrap code. 3. Find the Cisco IOS software. 4. Load the Cisco IOS software. 5. Find the configuration. 6. Load the configuration. 7. Run the configured Cisco IOS software. ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-5 Router ponents ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-6 ROM Functions ? Contains microcode for basic functions ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-7 Finding the Cisco IOS Software ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-8 Router Startup Flowchart ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2-9 Loading the Cisco IOS Software from Flash Memory ? The flash memory file is pressed into RAM. ? 2002, Cisco Systems, Inc. All rights reserved. ICND — 2- 10 Loading the Configuration ? Load and execute the configuration from NVRAM. ? If no configuration is present in NVRAM, enter setup mode.