cisco 7200 simulation, dynamips,Dynagen,GNS3,PEMU,

How to install Dynamips/Dynagen

How to install Dynamips/DynagenNote: tested over Ubuntu 7.04 (Feisty fawn)
[edit] Dynamips/Dynagen Installation Download and install dynamips (CISCO emulator) from http://www.ipflow.utc.fr/blog/. For example, for x86 platfoms:
wget http://www.ipflow.utc.fr/dynamips/dynamips-0.2.7-RC3-x86.bin chmod +x dynamips-0.2.7-RC3-x86.bin mv dynamips-0.2.7-RC3-x86.bin /usr/local/bin ln -s /usr/local/bin/dynamips-0.2.7-RC3-x86.bin /usr/local/bin/dynamipsDownload and install dynagen (the network configuration generator for Dynamips) from http://dynagen.org/. For example:
wget http://belnet.dl.sourceforge.net/sourceforge/dyna-gen/dynagen-0.9.2.tar.gz tar xfvz dynagen-0.9.2.tar.gz mv dynagen-0.9.2 /usr/local/ ln -s /usr/local/dynagen-0.9.2/dynagen /usr/local/bin/Get a cisco iso image for a router supported by dynamips and copy it to a directory, for example, to vnuml filesystems directory:
cd /usr/share/vnuml/filesystems wget …./c3640-ik9o3s-mz.124-13a.binUnzip the image to accelerate start up:
unzip -p c3640-ik9o3s-mz.124-13a.bin > c3640-ik9o3s-mz.124-13a.imageAnd create a simple link for the cisco image:
ln -s c3640-ik9o3s-mz.124-13a.image c3640[edit] Testing Dynamips/dynagen installation Start dynamips daemon:
dynamips -H 7200&Create a simple escenario, for example, copy the following on to a file named test.net:
[localhost] [[3640]] image = /usr/share/vnuml/filesystems/c3640 ram = 96 [[ROUTER R1]] model = 3640Start the scenario with:
dynagen simple1.netOpen the router console and wait till the router has started completely:
console R1Once started, you have to calculate the best Idle-PC values for your computer, to avoid dynamips consuming all the CPU (if you have a look at your CPU, you will probably see it is 100% occupied).
To estimate the optimum idle pc value for your case, execute:
idlepc get R1and choose one of the values marked with an “*”. If you see that the CPU usage is not reduced considerably, then execute:
idlepc show R1and chose the next value marked with “*”.
Repeat the procedure till you find a good value. Then save it with:
idlepc save R1The value is copied to the “test.net” file (a line similar to “idlepc = 0×605d32a4″). Remember to add that line to all your routers in your scenarios.
[edit] References

* Dynamips: http://www.ipflow.utc.fr/index.php/Cisco_7200_Simulator
* Dynagen: http://dyna-gen.sourceforge.net/
* Hacki’s Forum: http://7200emu.hacki.at/
* Using Dynamips for CCIE Lab Preparation (How To Run Cisco IOS On Your PC). http://www.internetworkexpert.com/resources/iosonpc.htm
* [SOLVED] bridging interfaces – strange behaviour. http://7200emu.hacki.at/viewtopic.php?t=6

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