• Author : William


Deploy Arista vEOS-lab 4.19.0F (VirtualBox, VM Workstation, VM Fusion, vCenter 6.5)

How to deploy Arista vEOS-lab 4.19.0F     Summary   One great way to test drive an Arista switch is to download the free vm of the switch called vEOS-lab. This is the actual OS used on physical switches, but in a vmdk format that can be deployed on major hypervisors from VMware ESXi, vCenter, VM Workstation, VM Fusion, and VirtualBox. Because of the wide variety of hypervisors on the market, Arista has deploy this vm as a vmdk. The second file required is the Aboot iso. These files are uploaded as IDE devices onto the hypervisor. Minimum Req 2...
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WinSCP with Arista Switches

WinSCP with Arista Switches Summary WinSCP is a popular tool for quickly uploading and downloading files between hosts. On a Linux or Mac, scp is a CLI tool already built in and can be invoked by using the scp command. However, unlike Linux and Mac, there is no native CLI for scp on Windows.   One tool that can be installed is pscp.exe from the guys who brought you PuTTY, found here. This post will go over the WinSCP, a GUI alternative. The latest version as of this writing is 5.11.1 which can be found here.   There are three...
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Configure Linux or Microsoft DHCP Server for ZTP using CloudVision

Configure Linux or Microsoft DHCP for ZTP using CloudVision   Summary One of the many features CloudVision offers along with Configuration management, image management, Telemetry, and Change Management includes Zero Touch Provisioning (ZTP) and Zero Touch Replacement (ZTR). Users can either use the preinstalled DHCP server on the CloudVIsion server’s bash or use any other DHCP server like Microsoft Windows.   In this article, we will outline the steps required to get DHCP working on both the Linux and Microsoft platform as well as basic steps to provision a new switch, and replacement. All this can be done without the...
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Common Issues When Deploying CVX 4.18.2F on vCenter 6 or 6.5

Common Issues When Deploying CVX 4.18.2F on vCenter 6 or 6.5  Summary   This article will go over how to install CVX on a vCenter 6 appliance. Starting from vCenter 6, there was a change in the OVFTool built into vCenter that changes the SHA hashing algorithm from 1 to 256. There is also an issue with 6.5 where it is required to go into the BIOS of the CVX vm and change the boot order from HDD to CD.   The vEOS image (whethere as a vEOS-lab, vEOS for vRouter functionality in Amazon Web Services or Microsoft Azure, or...
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Running vEOS in GNS3 1.5

How to Run vEOS 4.16.6M in GNS3 1.5 Intro This document will go over how to install a vEOS vm instance on both your Windows 7 OS as well as Mac OS X. The steps are exactly the same between OSes. We will first start with Windows 7 installation and will then show a few screenshots on the Mac. Finally we will conclude this post by going over the steps to run vEOS all locally off your machine (however this isn’t recommended as running vEOS in a  QEMU vm is much more efficient than running it locally). Prerequisites Aboot-veos-8.0.0.iso vEOS-lab-4.16.6M.vmdk...
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Virtual Routing and Forwarding (VRF) Fundamentals

This document will provide a summary over an Arista EOS switch and how an administrator can use Virtual Routing and Forwarding (VRFs) to achieve a desired solution. The number of VRFs varies per switch due to the amount of RAM and CPU on a switch.  As of this writing, VRF scale are the following per model. Configuration of a VRF is fairly straightforward and all VRFs have their own separate forwarding tables.  As with everything in EOS, all VRFs meet at SysDB. As these numbers may change in the future (as new features are added), please refer to the Release...
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How to Install & Configure Arista’s DirectFlow Assist for Palo Alto Firewalls

Contents Summary Prerequisite Summary Prerequisite Concepts Configuring QoS Markings Configuring the DFA Modes DFA Installation Palo Alto Configuration Troubleshooting SUMMARY For the high level solution brief, view the Palo Alto Solution Brief. One of the many features of having an Arista switch is the ability to install extensions on the box. Remember that you can manage the Arista switch as if it was a Linux server (it actually is, but that’s outside the scope of this article) – and because of this we can install RPM packages. One of the packages we can install is Arista’s DirectFlow Assist (DFA), which...
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