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blindhog.net Cisco - Using Dynamips as your personal Internet router

Cisco IOS IP ConfigurationGuide, Release12.2 - Configuring DHCP - Cisco Systems

Router(config-if)# ip address dhcp [client-id interface name] [hostname host-name]

Configuring a Gateway of Last Resort Using IP Commands - Cisco Systems

ip default-gateway
ip default-network
ip route 0.0.0.0 0.0.0.0

Cisco 基本コマンド

# show processes cpu
# show processes memory

Download dynamips http://www.ipflow.utc.fr/blog/
Download dynagen http://sourceforge.net/project/showfiles.php?group_id=160317
Copy IOS image into some where like /opt/dynagen/images/
unzip an image for improving the performance
unzip -p urchived_image.bin > extracted_image.image
create an ini file based on simple1.ini
modify this ini file

# dynamips -H 7200 &
# dynagen /opt/dynagen/simple1.net

http://netguide.sakura.ne.jp/dynamips/