Notes:

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• ROM , , OS . bootstrap RAM load , load bootstrap IOS, backup configuration file RAM load . ROM bootstrap, IOS upgrade chip .

• Flash EPROM IOS . Flash IOS RAM load . . IOS upgrade .

• NVRAM configuration file .

• RAM bootstrap, IOS, configuration file , . routing tables, ARP cache, fast-switching cache, packet buffering, packet hold queue . .

• Interface packet port . Interface LAN Interface, WAN Interface, Console, Auxiliary .

• configuration file . configuration file Interface , ascii . configuration file NVRAM configuration file , RAM configuration file NVRAM . .

Notes:

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• Console Auxilary . configuration file virtual terminal .

• telnet , configuration file .

• Console, Auxiliary, virtual terminal interactive configuration file , .

• TFTP configuration configuration file download . TFTP .

• NMS configuration file .

Notes:

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• user mode previledged mode .

• user mode .

• previledged mode .

• console user mode , user mode . user mode prompt > .

• user mode enable previledged mode . privileged mode prompt # .

• configuration file user mode privileged mode mode .

• virtual terminal mode console .

Notes:

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• privileged mode global configuration mode , global configuration mode configuration mode .

• setup mode privileged mode .

• global configuration mode privileged mode prompt .
  Router# configuration terminal
  

• configuration mode global configuration mode prompt interface configuration mode . configuration mode prompt .
  
  Router(config)# interface serial 0
  Router(config-if)#

Notes:

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• show version : h/w configuration, IOS version, bootstrap version, IOS filename, configuration register .

• show process [cpu] : process

• show protocols : Level 3 protocol . global interface

• show running-config : RAM configuration file . IOS 10.3 write terminal

• show memory :

• show stacks : stack

• show buffers : buffer

• show interface : interface

• show flash : flash

• show starup-config : NVRAM configurtaion file . show running-config . IOS 10.3 show config

Notes:

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• NVRAM configuration file setup mode .

• setup interactive .

• setup . . hostname, enable password, virtual terminal password . enable password virtual terminal password .

• setup NVRAM RAM . setup NVRAM .

• erase startup-config NVRAM configuration file . RAM .

• reload .

Notes:

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• privileged mode config terminal RAM NVRAM configuration file

• IOS 10.3 //

Notes:

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• Router(config)# interface .........

• Router(config-if)#

• Router(config)# router ........

• Router(config-router)#

• Router(config)# line ........

• Router(config-line)#

• Router(config)# ?

Notes:

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• enable password console password virtual terminal password .

• service password-encryption enable password configuration file . service password-encryption . .
  • router(config)# no service password-encryption

• router name prompt .

Notes:

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• router rip network 203.252.15.0 no .

• global mode router rip router rip no router rip .

• interface network address network address no .

• interface no shutdown . shutdown .

• router mode .
  • router rip
  • router igrp
  • router ospf
  • router eigrp
  • router bgp
  • network

• interface mode .
  • interface / //
  • interface serial 0
  • interface serial 1/1
  • interface ethernet 1
  • interface hssi 4/1
  • shutdown
  • no shutdown
  • ip address ...........

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