CCNA 新版（英文）D20S02L04.pps

© 2002, Cisco Systems, Inc. All rights reserved.
© 2002, Cisco Systems, Inc. All rights reserved.
2
Managing Cisco IOS Devices
Objectives
pleting this lesson, you will be able to:
Manage IOS image files to maintain accessible IOS images according to best practices, given operational access layer switches, routers, and a TFTP server
Manage device configuration files to reduce device downtime according to best practices, given operational access layer switches, routers, and a TFTP server
Execute an add, move, or change on a router, given a work requirement
Handle the troubleshooting process to minimize any potentially adverse impact on Cisco devices
Cisco IOS File System and Devices
Managing Cisco IOS Images
wg_ro_a#show flash
System flash directory:
File Length Name/status
1 10084696 c2500-js-l_120-
[10084760 bytes used, 6692456 available, 16777216 total]
16384K bytes of processor board System flash (Read ONLY)
Verify that flash memory has room for the Cisco IOS image.
Verifying Memory and Deciphering Image Filenames
Back up current files prior to updating flash memory.
Creating a Software Image Backup
Upgrading the Image from work
Device Configuration Files
Cisco IOS mand
NVRAM
Terminal
TFTP server
Erase start