はじめてのしすこ

・DB60やスマートシリアルは今後無縁だろう
・Power On Self Test--->Bootstrap--->configが空ならsetupモード
・Router#setup

・POST-->BS-->Configuration Register--->Loading of IOS--->runnning-config
・通常のCRは0x2102
　10進数なら8450だがここでは4ビット単位で2,1,0,2
　数値の意味は1ビット毎だが下4桁は異なって0x0ならROMモニタ0x1ならミニOS、
　0x2から0xFまではFLASH格納のIOS

・ROMモニタは8448ならぬ0x2100
　Router(config)#config-register 0x2100
　rommon 1>confreg 0x2102
　rommon 2>i

・ミニOSは8449ならぬ0x2101


Router(config)#config-register 0x2100
Router(config)#
Router(config)#exit
Router#
*Oct 22 03:49:50.095: %SYS-5-CONFIG_I: Configured from console by console
Router#
Router#reload

System configuration has been modified. Save? [yes/no]: n
Proceed with reload? [confirm]

*Oct 22 03:52:17.183: %SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.
System Bootstrap, Version 12.4(22r)YB5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2009 by cisco Systems, Inc.

C890 platform with 786432 Kbytes of main memory

Upgrade ROMMON initialized
rommon 1 > confreg 0x2102
rommon 2 > reset

System Bootstrap, Version 12.4(22r)YB5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2009 by cisco Systems, Inc.

C890 platform with 786432 Kbytes of main memory

Upgrade ROMMON initialized
program load complete, entry point: 0x80020000, size: 0x37a9d64
Self decompressing the image : ######################################################(以下略)