Introduction

Pemu support is based on two things:

• UDP tunnel support in PEMU recently introduced by mmm123
• a pemuwrapper by Thomas Pani

It is fairly easy to connect DYNAMIPS to PEMU using confDynagen. First of all you need to start the pemuwrapper - the server that controls the PEMU instances:

pemuwrapper.exe

Meanwhile write a .net file (similar to dynagen .net file):

autostart = false
[localhost:7200]
	[[7200]]
	image = c:\IOS\C7200-jk9s-mz.124-12.bin
	ram = 160
	npe = npe-400
	sparsemem = True
	idlepc = 0x61200024
	
	[[router R1]]
	e1/0 = FW1 e0

[pemu localhost]
	[[525]]
	image = C:\image\pix802.bin
        serial = 0x12345678
        key = 0x00000000,0x00000000,0x00000000,0x00000000
	[[fw FW1]]

You might have noticed that the .net file specifies the pemuwrapper instance - currently running on localhost - it could be running also on another computer, creating a distributed lab. After that it specifies the 525 signifying the PIX 525 that PEMU emulates. Over here you can set the 'image','key','serial' and 'ram' options. The [FW1] line creates the PIX 525 instance which is connected according to the previous statement to R1 e1/0 with its Ethernet0 interface.

After you specify this .net file you can easily run the lab using dynagen syntax

dynagen pemulab.net

This run the lab and you can list pemu instances using the 'list' command:

=> list
Name       Type       State      Server          Console
R1         7200       stopped    localhost:7200  2000
FW1        525        stopped    localhost:10525 4000

As you can see the instance FW1 is currently stopped, but its console it bound to localhost:4000. So let's start both of them.

=> start /all
=> list
Name       Type       State      Server          Console
R1         7200       running    localhost:7200  2000
FW1        525        running    localhost:10525 4000

After this you can safely telnet to port 2000 and port 4000 and enjoy the PIX console:

pixfirewall# conf t
pixfirewall(config)#
pixfirewall(config)# int e0
pixfirewall(config-if)#
pixfirewall(config-if)# ip add 1.1.1.1 255.255.255.0
pixfirewall(config-if)#
pixfirewall(config-if)# nameif inside
INFO: Security level for "inside" set to 100 by default.
pixfirewall(config-if)#
pixfirewall(config-if)# no shut
pixfirewall(config-if)#
pixfirewall(config-if)# end
pixfirewall#
pixfirewall# ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

And 7200 console:

Router>en
Router#
Router#
Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int e1/0
Router(config-if)#ip add 1.1.1.2 255.255.255.0
Router(config-if)#no shut
Router(config-if)#end
Router#
*Sep 19 14:44:02.175: %SYS-5-CONFIG_I: Configured from console by console
*Sep 19 14:44:03.687: %LINK-3-UPDOWN: Interface Ethernet1/0, changed state to up
*Sep 19 14:44:04.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet1/0, changed state to up
Router#
Router#ping 1.1.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/47/64 ms

Complex labs

Here is an example of a more complex FW POP with full redundancy

autostart = false
[localhost:7200]
	[[7200]]
	image = c:\IOS\C7200-jk9s-mz.124-12.bin
	ram = 160
	npe = npe-400
	sparsemem = True
	idlepc = 0x61200024
	
	[[router InsideRouter1]]
	e1/0 = FW1 e0
        e1/1 = InsideRouter2 e1/1 

        [[router InsideRouter2]]
        e1/0 = FW2 e0

        [[router OutsideRouter3]]
        e1/0 = FW1 e1
        e1/1 = OutsideRouter4 e1/1

        [[router OutsideRouter4]]
        e1/0 = FW2 e1

[pemu localhost]
	[[525]]
	image = C:\image\pix802.bin
        serial = 0x12345678
        key = 0x00000000,0x00000000,0x00000000,0x00000000
	
        [[fw Firewall1]]
        #e0 inside, e1 outside
        e5 = Firewall2 e5 #failover link
        [[fw Firewall2]]
        #e0 inside, e1 outside