7200emu.hacki.at

[Hamid]

Hello ,
After playing a little bit with pixemu and qemu I got my lab with one PIX and four routers up and running. I have tested this on OpenSUSE 10.2, but other distros should be fine as long as you could bring up the tap interfaces. Bellow comes the howto. The lab diagram is attached:

A) Running PIXEMU:
I have placed all the pixemu files in /pixemu, and run it as follows:

[vex]

Excellent work Hamid.

What is your CPU usage like with this configuration?

I'm definately going to try this on some of lab modules in Khawar Butt's new CCIE Security workbook.

It should be fairly easy to integrate it with the ethernet of my linux host and the 2950 switch I have in the lab to accomodate dot1q and other external lab devices like Cisco IPS, an ACS server etc.

[greg]

Very nice writeup Hamid. Thanks.

[bzzjh]

great works
but you made a mistake

[Hamid]

Corrected it, thanks.

[tempnet]

I followed hamid's instruction; however, i got the following error message when I tried to start
dynagen with the network config file, I did make sure the pix started with tap0, tap1, tap2 and tap3.

[root@localhost pixlab]# dynagen pixlab.net

Reading configuration file...


*** Error: Connecting R1 f0/0 to NIO_linux_eth:tap0 resulted in
206-unable to create Linux raw ethernet NIO
Press ENTER to continue

Here is my config file:

# Pix Lab



autostart = false

sparsesmem = true



[localhost:7200]



[[3640]]

image = /home/jtan/ios/c3640-jk9o3s-mz.123-10.extracted.BIN

idlepc = 0x60458c7c

mmap = false



[[ROUTER R1]]

model = 3640

slot0 = NM-1FE-TX

f0/0 = NIO_linux_eth:tap0





[[ROUTER R2]]

model = 3640

slot0 = NM-1FE-TX

f0/0 = NIO_linux_eth:tap1





[[ROUTER R3]]

model = 3640

slot0 = NM-1FE-TX

f0/0 = NIO_linux_eth:tap2





[[ROUTER R4]]

model = 3640

slot0 = NM-1FE-TX

f0/0 = NIO_linux_eth:tap3



Can someone tell me how to fix the error? Thanks!

[tempnet]

never mind, it works now!

[Hamid]

[hacki]

Hamid:

did you start the hypervisor as root ?

h.

[Hamid]

Yes, AFAIK dynamips should be run as root , but correct me if I am wrong.

[hacki]

Yes and I received a similar error message before starting dynamips as root. That's why I asked.

h.

[Hamid]

I guess you need to be root since dynamips uses pcap to communicate with real networks. Sniffing data (pcap) requires root permission.

[tempnet]

[[3640]]
image = /home/jtan/ios/c3640-jk9o3s-mz.123-10.extracted.BIN
idlepc = 0x60458c7c
mmap = false

[[ROUTER R1]]
model = 3640
slot0 = NM-1FE-TX
f0/0 = NIO_linux_eth:tap0

I didn't know what was wrong, I changed slot0 = NM-4E and e0/1 = NIO_linux_eth:tap0 and then it works.

Pixemu works fine with Dynamips; however, for some reason, Pixemu hangs pretty often, I have to press Ctrl + C to kill the process and then restart Pixemu again.

[mmm123]

That is strange, do you use compiled version or source code?
in both cases, try the opposite to see if it changes something.
Also If you use relatively slow CPU, sometimes pixemu looks like it is not responding, but you just need to wait. This usually happens when you try to connect to web interface, or some other CPU-intensive operations like generating keys or connecting to it via ssh. In all these cases it doesn't hang permanently, it is just slow to respond to console.

[tempnet]

I use the latest compiled version which you provided. I use Fedora Core 5, CPU 2.4 P4 with 750 MB of RAM.

I am new to linux, does anyone know how to start pixemu with a script. Everytime when I start it i have to copy the long string of commands from a backup text file and paste it on prompt.

Thanks!