#Iou netmap license key#
The license file - iourc should be configured for that hostname and must contain a valid license key obtained from Cisco.Ĭreate /mnt/sda1/IOU/ directory. Load IOUl2,, wrapper and iourc to Core Linuxĭefault hostname for Core is box. Save files in listed in /opt/.filetool.lstĤ. Pair hostname with IP address of loopback interface. Load ipv6, 8021q module and make additional Core configurationĮcho "modprobe ipv6" > /opt/bootlocal.shĮcho "modprobe 8021q" > /opt/bootlocal.shįorwarding between interfaces is disabled by default, so we are going to change it.Įcho "_forward = 1" > /etc/nfĮcho ".forwarding = 1" > /etc/nfĮcho "/etc/nf" > /opt/.filetool.lstĮcho "sysctl -p /etc/nf" > /opt/bootlocal.sh Tce-load -w -i libpcap libpcap-dev perl5 tunctl perl_Net_Pcap ipv6-3.0.3-tinycore.tcz openssh.tcz bridge-utilsģ. Linux Core installation on Qemu virtual machine is not shown in the tutorial but you can find it here.įor those of you not willing to build Linux Core from scratch, here is my Core Qemu image. Note I decided to use Linux Core because it is incredibly small size and with minimal hardware requirements. They help to create NETMAP file and to start IOU after boot of Core. They are also my own two scripts loaded in Linux Core. Therefore it creates connection between IOU interfaces bridged to particular Core interfaces and between network devices connected to Core Linux interfaces. In general, the script bridges Core Linux interfaces with Cisco IOU interfaces. Linux Core is occupied with Cisco IOU image and with the script that connects IOU to other GNS3 devices. The switch is built on Linux Core that is installed on Qemu virtual machine. The goal of this tutorial is to build Cisco like switch based on IOU that can be used in GNS3 lab. To connect IOU to the real network a perl script - was written by "einval" and can be found here. Uncontrollably shared over the Internet, they are widely used in many home labs by Cisco students.įor those individuals not familiar with IOU, the IOU FAQ is available here. They are basically IOS images compiled either for x86 Linux or Sparc Unix platform. It had changed when Cisco IOS images known as IOU leaked from Cisco.
Unfortunately, it is almost impossible to emulate Cisco devices using ASICs due to lack of their public specifications. It has always been a dream of Cisco guys to run Cisco IOS on a computer instead of real Cisco hardware.
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