Read the Cumulus Linux User Guide to learn about using Cumulus Linux and test out features on your switches.Run the following commands on each switch to show system net show systemīuild.Cumulus Linux 4.2.0 LocalPort Speed Mode RemoteHost RemotePort Exit the switch, then log back in to see the new hostname at net show lldp Run these commands on each switch to change the hostname and bring up the You are not prompted to change the default password.įor more information on the required password change, see the Cumulus Linux documentation. If you are using Cumulus VX 4.1.1 or earlier, the default password is CumulusLinux!. When you log in for the first time, you are prompted to change the default password. Log into each switch with the cumulus account and default password cumulus. Make sure you specify the location of the VM at the end of the command. Run the following commands to configure each VM. Run the following commands to install KVM, QEMU and Libvirt: sudo apt update sudo apt install -qy qemu ebtables dnsmasq-base qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virt-manager sudo apt install -qy libxslt-dev libxml2-dev libvirt-dev zlib1g-devĬonfirm that your Linux kernel and BIOS settings permit the use of KVM hardware acceleration: kvm-okĬopy the qcow2 image onto a Linux server three times to create the three VMs. Download and Install the Softwareĭownload the Cumulus VX Qcow2 image for KVM. This section assumes you have Linux and KVM experience. The following procedure creates leaf01, leaf02, and spine01 and the network connections between them. These steps were tested with Cumulus VX 4.2, KVM/QEMU version 1:4.2-3ubuntu6.3, and Libvirt version 6.0.0 on Ubuntu Linux version 20.04. Create three VMs (leaf01, leaf02, and spine01) and the network connections between them.To facilitate additional configuration after the initial setup descibed in this guide, leaf01 and leaf02 also have two connections to each other. leaf01 and leaf02 connect to spine01, which is the aggregation layer switch on the network. In the topology, leaf01 and leaf02 are the access layer switches on the network. ![]() This section describes how to install and set up Cumulus VX with KVM/QEMU and Libvirt on a Linux server to create the two leaf and one spine topology shown below. ![]() It uses XML to represent and define the VM. ![]()
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