Dynamips Dynagen Tutorial

(First ): Download dynagen at http://dynagen.org

Go to download menu, you will be redirected to http://sourceforge.net
Go to Dynagen source / Linux : click dynagen-0.11.0.tar.gz
Point your mouse to use direct link, right click then copy link location, http://downloads.sourceforge.net/sourceforge/dyna-gen/dynagen-0.11.0.tar.gz?use_mirror=nchc

Download from Linux terminal :
root@desktop:~# wget http://downloads.sourceforge.net/sourceforge/dyna-gen/dynagen-0.11.0.tar.gz?use_mirror=nchc


(Second) : Create directory & extract tarball

Create Directory : root@desktop:~# mkdir /home/dynamips
Move source file to dynamips folder : root@desktop:~# mv dynagen-0.11.0.tar.gz /home/dynamips
Extract tarball : root@desktop:~# tar zxvf dynagen-0.11.0.tar.gz
Go to folder : root@desktop:~# cd /home/dynamips/dynagen-0.11.0
Check README file :root@desktop:/home/dynamips/dynagen-0.11.0#more README.txt
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This version of Dynagen requires at least version 0.2.8-RC1 of Dynamips

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(Third) : Download dynamips that is match to dynagen requirement

Go to http://www.ipflow.utc.fr/blog/
point your mouse to this link 0.2.8-RC2 binary for Linux x86 platforms, right click and copy link location
http://www.ipflow.utc.fr/dynamips/dynamips-0.2.8-RC2-x86.bin

Download from Linux terminal :
root@desktop:/home/dynamips/dynagen-0.11.0# wget http://www.ipflow.utc.fr/dynamips/dynamips-0.2.8-RC2-x86.bin

Change privilege :
root@desktop:/home/dynamips/dynagen-0.11.0# chmod 777 dynamips-0.2.8-RC2-x86.bin


(Fourth) : Create Symlink (Symbolic link)
Go to folder : cd /usr/bin
symlink using alias for dynamips program : /usr/bin# ln -s /home/dynamips/dynagen-0.11.0/dynamips-0.2.8-RC2-x86.bin dynamips
symlink using alias for dynagen program : /usr/bin# ln -s /home/dynamips/dynagen-0.11.0/dynagen dynagen


(Fifth) : Download, Extract & Copy IOS image
Download IOS (I will not tell you how to get the IOS)
extract the IOS to make router boot up faster than ziped IOS
Create directory to store IOS :
root@desktop:/home/dynamips/dynagen-0.11.0# mkdir Images
navigate to folder : cd Images
copy IOS file : cp /home/C7200-K9.BIN C7200-K9.BIN

(Sixth) : Running Sample Lab
Go to sample labs .net file : root@desktop: cd /home/dynamips/dynagen-0.11.0/sample_labs/simple1#
Edit simple1.net : vi sample1.net
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[localhost]

[[7200]]
# image = \Program Files\Dynamips\images\c7200-jk9o3s-mz.124-7a.image
# On Linux / Unix use forward slashes:
image = /home/dynamips/dynagen-0.11.0/Images/C7200-K9.BIN
npe = npe-400
ram = 160

[[ROUTER R1]]
s1/0 = R2 s1/0

[[router R2]]
# No need to specify an adapter here, it is taken care of
# by the interface specification under Router R1


# R1 s1/0 ----- R2 s1/0

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(Seventh) : Run dynamips instance 7200 in background (&)

root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# dynamips -H 7200 &
[1] 7267
root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# Cisco Router Simulation Platform (version 0.2.8-RC2-x86)
Copyright (c) 2005-2007 Christophe Fillot.
Build date: Oct 2 2008 01:17:18

ILT: loaded table "mips64j" from cache.
ILT: loaded table "mips64e" from cache.
ILT: loaded table "ppc32j" from cache.
ILT: loaded table "ppc32e" from cache.
Hypervisor TCP control server started (port 7200).


(Eighth) : Run Dynagen simple1.net
root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1#dynagen simple1.net

Dynagen management console for Dynamips and Pemuwrapper 0.11.0
Copyright (c) 2005-2007 Greg Anuzelli, contributions Pavel Skovajsa

=> list
Name Type State Server Console
R1 7200 running localhost:7200 2000
R2 7200 running localhost:7200 2001
=>

(Ninth) : Access / Telnet R1 & R2

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root@desktop:~# telnet localhost 2000
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connected to Dynamips VM "R1" (ID 0, type c7200) - Console port

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#int serial 1/0
R1(config-if)#no shutdown

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root@desktop:~# telnet localhost 2001
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connected to Dynamips VM "R2" (ID 1, type c7200) - Console port

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R2
R2(config)#int serial 1/0
R2(config-if)#no shutdown

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R1#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
R2 Ser 1/0 15 R 7206VXR Ser 1/0

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R2#sh cdp nei
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
R1 Ser 1/0 158 R 7206VXR Ser 1/0

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Set ip address :

R1(config)#int ser 1/0
R1(config-if)#ip add 10.1.0.1 255.255.255.0

R2(config)#int ser 1/0
R2(config-if)#ip add 10.1.0.2 255.255.255.0
R2(config-if)#

Ping : R1 to R2

R1#ping 10.1.0.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/15/16 ms

(Tenth) : Turn off the router, Stop dynagen and dynamips

Turn off the router :

=>
=> stop R1
C7200 'R1': stopping simulation.
100-VM 'R1' stopped
=> stop R2
100-VM 'R2' stopped
C7200 'R2': stopping simulation.
=>

Stop Dynagen simple1.net

Exit dynagen :
=> exit
Exiting...
Shutdown in progress...
Shutdown completed

Stop dynamips :

root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# ps -ax |grep dynamips
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
7267 pts/0 Sl 39:08 dynamips -H 7200
7699 pts/0 R+ 0:00 grep dynamips

root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# kill -9 7267


To optimize your pc, you have to set the idle-pc. idle-pc depend on IOS, to get the value use this step :

=> idlepc get R1
Please wait while gathering statistics...

Please wait while gathering statistics...
Done. Suggested idling PC:
0x608c5bc8 (count=48)
0x608c5bcc (count=35)
0x608463cc (count=59)
0x60847050 (count=71)
Restart the emulator with "--idle-pc=0x608c5bc8" (for example)
1: 0x608c5bc8 [48]
2: 0x608c5bcc [35]
* 3: 0x608463cc [59]
4: 0x60847050 [71]


Edit simple1.net : vi sample1.net


[localhost]

[[7200]]
# image = \Program Files\Dynamips\images\c7200-jk9o3s-mz.124-7a.image
# On Linux / Unix use forward slashes:
image = /home/dynamips/dynagen-0.11.0/Images/C7200-K9.BIN
npe = npe-400
ram = 160
idlepc = 0x608463cc

Save file

simple1#dynagen simple1.net

=> idlepc show R1
R1 has an idlepc value of: 0x608463cc
=> idlepc show R2
R2 has an idlepc value of: 0x608463cc
=>

Have a good try ;)

here is the usefull link to try dynamips and dynagen from iementor
http://www.iementor.com/Introduction_to_Dynamips.pdf