AUGUST 18, 2013 5 COMMENTS
The Cisco IOS XE Release 3.10 brings support for Kernel Based Virtual Machine (KVM) hypervisor. Thanks to the this awesome enhancement, Cisco CSR 1000v running IOS XE 3.10 can be easily connected to devices running inside GNS3 topology. The goal of this tutorial is to install CSR 1000v IOS XE 3.10 on a virtual machine that is run by Qemu hypervisor. As the both Guest and Host CPU are the same x86 architecture, Qemu can use kvm for hardware assisted virtualization. In a last part of the tutorial we will configure GNS3 to support CSR 1000v Qemu Virtual machine and test connection between CSR 1000v and Cisco 3725 both running inside GNS3.
1. Hardware Requirements
2. Software Requirements
1. Create Qemu Virtual Machine
/usr/local/bin/qemu-img create -f qcow2 ./CSR_1000v.img 8G
2. Start Qemu Virtual Machine
/usr/local/bin/qemu-system-i386 -boot d CSR_1000v.img -enable-kvm -m 4096M -cpu Nehalem -smp 4,sockets=4,cores=1,threads=1 -device virtio-net-pci,mac=00:00:ab:c1:bd:02 -device virtio-net-pci,mac=00:00:ab:2c:41:03 -cdrom ~/csr1000v-universalk9.03.10.00.S.153-3.S-ext.iso
The command start a Qemu Virtual machine with attached CSR installation ISO image. Qemu 32 bit binary may be used to run a Virtual machine but CPU model Nehalem must be explicitly configured. Also be aware of RAM requirement. If less than RAM 4096 MB is assigned to a Virtual machine, installation fails. Finally, CSR 1000v IOS XE Release 3.10 only supports virtio-net-pci NIC model for kvm hypervisor.
Picture 1 – CSR 1000v Boot Window
CSR 1000v is installed automatically. Once finished, it will restart and finally the router prompt appears.
Picture 2 – Prompt Window
3. After Install Tasks – License Activation and Direct IOS output to a Serial Port
Cisco CSR 1000v license model and benefits of activation an evaluation license is explained here in more details. To activate evaluation license, us the following command:
CSR_1000v(config)#license boot level premium
Save configuration and reboot a router with the reload command. In order to direct IOS output to serial port use the following command:
CSR_1000v(config)#platform console serial
Save configuration with the write command:
CSR_1000v(config)#do write
Navigate to Edit-> Preferences-> Qemu-> General Settings. Assuming that you Qemu installation is working configure GNS3 Qemu settings as following:
Picture 3 – Qemu General Settings
Click on the Test button to check if you configured Qemu General settings properly. If yes, GNS3 will show the message All components have successfully started.
Navigate to Edit-> Preferences-> Qemu-> Qemu Guest and configure your Qemu guest settings as following.
Picture 4 – Qemu Guest Settings
Drag and drop both routers on the GSN3 desktop. Start routers and configure them according the network diagram.
Picture 5 – Network Topology
Be aware that CSR 1000v reserves interface GigabitEthernet 0 for management purpose so use interface GigabitEthernet 1 instead for connection to the Cisco 3725 router. As we previously configured CSR 1000v to direct IOS output to serial port, you can use the serial console. Right click on the device and select option Console.
1. Configure the Hostname, CDP Protocol and the IP Address for the Interface GigabitEthernet 1 of the Cisco CSR 1000v
Router>enable
Router#conf t
Router(config)#hostname CSR_1000v
CSR_1000v(config)#cdp run
CSR_1000v(config)#interface GigabitEthernet 1
CSR_1000v(config-if)#ip address 10.10.10.2 255.255.255.252
CSR_1000v(config-if)#cdp enable
CSR_1000v(config-if)#no shutdown
CSR_1000v(config-if)#do write
2. Configure the Hostname and the IP Address for the Interface FastEthernet 0/0 of the Cisco 3725 Router
Router>enable
Router#conf t
Router(config)#hostname c3725
c3725(config)#interface FastEthernet 0/0
c3725(config-if)#ip address 10.10.10.1 255.255.255.252
c3725(config-if)#no shutdown
c3725(config-if)#do write
3. Check if the Layer 2 and 3 Connection is Established between the Routers
If the Layer 2 connection is established between routers and CDP protocol is enabled on CSR 1000v, it should appear in the output of show cdp neigbours command issed on the Cisco 3725. Similarly, if Layer 3 connection is established between routers, we should be able to successfully ping ip address of CSR 1000v GigabitEthernet interface 10.10.10.2
Picture 6 – Checking Connection between the Routers
转自:http://brezular.wordpress.com/2013/08/18/cisco-csr-1000v-installation-on-qemu-virtual-machine/
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