Cisco useful feature and commands
configure DHCP server on Cisco Router:---------------------------------------
ip dhcp excluded-address 192.168.27.1 192.168.27.50
!
ip dhcp pool cisco
network 192.168.27.0 255.255.255.0
dns-server 192.168.7.20
domain-name fagorarrasate.net
default-router 192.168.27.1
configure HTTP server:
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ip http server
username cisco privilege 15 password cisco
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
configure local logon without username and password/ with username and password:
-------------------------------
line con 0
exec-timeout 0 0
login local
line vty 0 4
password cisco
login
transport input all
Crack username/password for Cisco router:
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after router boot up, in 10s, press FN+Ctrl+B or Ctrl+Break
then, confreg 0x2142
reset
----------
en
copy start-confi running
config-register 0x2102
no enable pass
no enable secret
exit
wr
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IPAccountingarchive router configuration
archive router ：
http://www.packetu.com/2013/05/07/how-to-automate-cisco-backup-using-configuration-archive/
archive
path tftp://10.254.254.10/router/
write-memory
no file verify auto
int g2/0
ip accounting output-packets
exit
sh ip accounting
int g2/0
no ip accounting
exit
clear ip accounting
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/15-s/iap-15-s-book/iap-ipserv.html
Router# configureterminal
Router(config)#interface ethernet 0/5
Router(config-if)#ip accounting mac-address input
Router(config-if)#ip accounting mac-address output
Router(config-if)#ip accounting precedence input
Router(config-if)#ip accounting precedence output
The followingexample shows how to enable IP accounting with the ability to> Router# configureterminal
Router(config)# ipaccounting-transits 100
Router(config)#interface ethernet 0/5
Router(config-if)#ip accounting output-packets
Router(config-if)#ip accounting access-violations
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Copy flash的内容到tftp中：
archivetar /create tftp:1.2.3.4/saved.tar flash:
https://learningnetwork.cisco.com/thread/10762
Copy tftp to flash:
archivetar /xtract tftp://192.168.3.250/c1200-k9w7-tar.123-8.JA2.tar flash:
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