Networking

Arista recently released an ARM64-based cEOS container image. This guide walks through downloading and importing it into Containerlab on macOS. Prerequisite Containerlab with macOS on Apple Silicon macOS Point your web browser to the Arista Software Download page. Log in with your Arista credentials. Click the cEOSarm-lab-4.36.2F.tar.xz file link to download. Save the cEOSarm-lab-4.36.2F.tar.xz file to your Downloads folder. Open your favorite terminal emulator, and change to the Downloads directory. ...

The content in this post is intended for educational and informational purposes only. All software rights belong to their respective owners. Cisco includes the IOS on Linux (IOL) images available with the Cisco Modeling Labs (CML) Free Tier . Because IOL runs modern Cisco IOS-XE as a native Linux binary, it offers a lightweight, resource-friendly alternative for network emulation. This post will guide you through the process of creating Cisco IOL container images using Containerlab on macOS. ...

Containerlab is gaining traction on macOS, driven by the growing availability of ARM64-based NOS container images. The following Containerlab kinds work excellent with macOS on Apple Silicon: Nokia SR Linux Arista cEOS Cisco IOL with Rosetta Prerequisites Mac computer with Apple silicon macOS 14.0 or later Git uv Steps Download OrbStack and open it. Open your favorite terminal emulator. We will work from the command line for the following steps. ...

Vagrant supports three types of networks: public, private, and port-forwarding. The private network type has the option to use a UDP tunnel for a point-to-point link when using the vagrant-libvirt plugin. This connection type is ideal for links between virtual network devices. Refer to the following resources if you need more information: Pseudo-wires With Vagrant and Libvirt vagrant-libvirt Networks Vagrant Private Networks The only drawback with this type of connection is concerning packet sniffing. Since the connection uses a tunnel for encapsulation, we need a method to view the relevant data within the tunnel somehow. ...

Why not add the CSR 1000v to round out our collection of Cisco virtual appliances? Similar to the Cisco Nexus 9000v, each instance of the Cisco CSR 1000v requires a considerable amount of hardware resources to run. Again, I recommend a Mac with at least 16GB of memory and a dual-core CPU if you plan to run more than a single instance. Ingredients used in this guide: macOS Mojave (10.14) VMware Fusion 11 Pro Vagrant 2.2.3 VMware provider for Vagrant Cisco Cloud Services Router 1000V Series A valid service contract is required for the download. ...

The Cisco Nexus 9000v shares the same software image as its hardware counterpart, so it provides a terrific solution for feature testing and/or network automation. The only caveat is the hardware resources required to run it. I recommend a Mac with at least 16GB of memory and a dual-core CPU. Ingredients used in this guide: macOS Mojave (10.14) VMware Fusion 11 Pro Vagrant 2.2.3 VMware provider for Vagrant Cisco Nexus 9000v Switch Steps 1. Sign in to your Cisco account to download the Nexus 9000v Switch software. The software is available here Select the Download Options link Select the version from the menu on the left. For my example, I will be using the Release 7.0(3)I7(5a) Click the Download button for Cisco Nexus 9000/3000 Virtual Switch for ESXi or Fusion Save the nxosv-final.7.0.3.I7.5a.ova file to the Downloads folder 2. Create the Cisco Nexus 9000v template. Open the VMware Fusion application Menu: File → Import… Click the Choose File… button Navigate to and select the nxosv-final.7.0.3.I7.5a.ova file in the Downloads folder Click the Open button Click the Continue button Click the Continue button to use the Default profile Save As: Nexus Click the Save button Click the Customize Settings button to modify the virtual appliance settings Set Processors to 2 processor cores Set Memory to 6144 MB Set Network Adapter to Share with my Mac Remove CD/DVD (IDE) Upgrade the VM hardware version to 16 (Compatibility → Upgrade) Close the Settings window Quit the VMware Fusion application 3. Remove additional network interfaces from the virtual appliance configuration file. From a macOS terminal, remove Network Adapter 2 to Network Adapter 10. ...

And yet another virtual network appliance to Vagrantize… Ingredients used in this guide: macOS Mojave (10.14) VMware Fusion 11 Pro Vagrant 2.2.3 VMware provider for Vagrant Cisco IOS XRv Router v6.1.3 The Cisco IOS XRV Router image is available as part of your Cisco VIRL subscription. Steps 1. Convert the disk image format type. The Cisco IOS XRv Router is provided in the qcow2 (QEMU) disk image format. The QEMU disk image utility (qemu-img) is required to convert the disk image to the vmdk (VMware) format. The utility is included with the qemu package. Use either MacPorts or Homebrew to install. ...

Continuing my journey to Vagrantize more virtual network appliances… Ingredients used in this guide: macOS Mojave (10.14) VMware Fusion 11 Pro Vagrant 2.2.2 VMware provider for Vagrant FortiGate-VM The FortiGate VM includes a limited embedded 15-day trial license that supports: 1 CPU maximum 1 GB RAM maximum Low encryption only (no HTTPS administrative access) All features except FortiGuard updates Steps 1. Download and unzip the FortiGate VM deployment package for VMware. FortiGate VM deployment packages are included with FortiGate firmware images on the Customer Service & Support site. I will be using FortiGate VM v6.0.2 for my example. ...

This post is a companion to the previous GNS3 with Microsoft Azure post. For many of us, an asymmetrical Internet connection usually equates to a much slower upload than download speed. Specifically, in our case, this results in a time-consuming process of uploading GNS3 image files to our remote gns3server VM instance. What if we need to recreate the disk attached to our gns3server VM instance? Modify the type (i.e., HDD to SSD) or decrease the size of the disk, which again would require us to recreate the disk? What if we need to spin up multiple gns3server VM instances for training purposes? Each situation may require a good amount of unnecessary (re)uploading. ...

Microsoft Azure is one of the big three public cloud computing providers for services such as virtual machines (VMs), containers, server-less computing, and machine learning. Azure is a large platform, but we’re focused solely on the Infrastructure as a Service (IaaS) resources in this guide. The GNS3 architecture is comprised of three primary components: User Interface (UI), Controller, and the (Compute) Server. The Server is the component that puts a strain on computer hardware resources. The more routers, switches, firewalls, and servers we add to our GNS3 topologies, the more CPU, RAM, and data storage we require. We usually come to a point where the hardware requirements of our GNS3 labs may exceed what our laptops and desktops can deliver. ...