GNS3 1.0 即将发布， 内置支持IOU

chinaiplab

The GNS3 1.0 Alpha version is out, let’s see what’s new and how to install it.

Download is allowed only to GNS3 Members: to be a member you must contribute to the crow funding campaign.

Now login to the GNS3 Early Release Members Area using your GNS3 user (GNS3XXXX) and related password and download the Windows All-in-One Installer Alpha Release V1.0.

The first execution will ask for GNS3 username and email address:

                               
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The new GNS3 supports Cisco IOU (IOS On Unix) using an external VM: a simple HOWTO is provided:

• Download the OVA.
• Import the OVA and start the VM (latest VirtualBox software must be used, VMware  Player/Workstation do not work).
• Login as root (password “cisco”) and check the assigned IP address:# ifconfig eth0
• Open a browser, point to the address of the VM and upload an IOU binary using  http://192.168.X.Y:8000/upload. Seems that file larger than 100MB are not supported (I tested with 62MB and it worked). The IOU image will be uploaded under /home/gns3/Documents/GNS3/images/.
• Create, on your dekstop, the IOU license using gns3-iouvm as hostname:[license]gns3-iouvm = xxxxxxxxxxxxxxxx
• Open the GNS3 GUI set the VM IP (port 8000) address under Edit -> Preferences -> Server -> Remote servers:
  
  
                                 
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• Set the iourc license path under Edit -> Preferences -> IOS on UNIX -> Path to IOURC:
  
  
                                 
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• Finally set the IOU path under Edit-> Preferences -> IOUU devices -> IOU images -> IOU path:
  
  
                                 
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Finally deploy a couple of IOU devices and start them:

                               
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Behind GNS3 1.0

GNS3 1.0 starts IOU devices from /home/gns3/Documents/GNS3/projects/iou/. Each IOU device has a different directory, and all have a similar NETMAP:

# head -n5 /home/gns3/Documents/GNS3/projects/iou/untitled/device-1/NETMAP513:0/0    1:0/0513:0/1    1:0/1513:0/2    1:0/2513:0/3    1:0/3513:1/0    1:1/0

513 is a dumb device ID assigned to a wrapper:

# ps -ef | grep 513gns3      1736  1597  0 09:57 ?        00:00:00 /usr/local/bin/iouyap 513

IOU process are owned by GNS3 UID:

# ps -ef | id gns3uid=1000(gns3) gid=1000(gns3) groups=1000(gns3)root@gns3-iouvm:~# ls /tmp/netio10001  1.lck  2  2.lck  513  513.lck  514  514.lck  ttyC2  ttyC2.lck  ttyS1  ttyS2

The same approach is currently used on Unified Networking Lab.