• Category : Management


NCClient Example with EOS

Introduction Ncclient is a python library that provides a set of tools to interact with and manipulate devices supporting NETCONF server functionality. The goal of this article is to assist users to leverage ncclient effectively with EOS. This article will outline the use of  ncclient to configure Arista devices using EOS CLI commands, as well as YANG modelled data (and a combination of the two).  This article is not intended to be a full tutorial on YANG or EOS supported YANG models. Arista EOS strives to support open YANG models via support of OpenConfig models wherever possible. At times vendor...
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ZTP Boot Process with CloudVision

Platforms: EOS Switch Versions 4.17.3F and above CloudVision Versions 2018, 2019, 2020 Summary: Zerotouch Provisioning (ZTP) is available on all Arista switches and is enabled by default or after a factory reset.  CloudVision (CVP), Arista’s Configuration Management and Streaming Telemetry tool comes with ZTP installed.  The combination of ZTP and CVP provides a simplistic workflow to onboard new switches into your environment. Prerequisites CloudVision installed and running DHCP Service providing Option 67 Bootstrap information Switch in Factory Default mode (ZTP enabled) Network Reachability between Switch and CVP ZTP Server Example Setup In this setup, CloudVision ZTP service and the switch...
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Forward TCPDump to Wireshark

Description Using TCPDump on an Arista switch is an impressive feature and can help with troubleshooting, security concerns, and much more. But if you need to watch a packet capture live using TCPDump can be tricky since you can’t use display filters, trace a packet, and use many different tools that are found in Wireshark. In this article, we will go over how we can forward our live TCPDump session to our local host computer running Wireshark. Please refer to this article to learn the basics of TCPDump on an Arista switch. Using tcpdump for troubleshooting Platform Compatibility All Arista...
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Configurations and Optimizations for Internet Edge Routing

Introduction For many years, network deployments for enterprise Internet edge environments have consisted of dedicated routing platforms and a switching or aggregation layer to distribute this to various network zones.  With the advances in merchant silicon forwarding engines and the software expertise put into Arista’s Extensible Operating System (EOS), we can now fully replace this legacy architecture with a collapsed routing and switching layer using Arista R Series platforms.  Arista R Series platforms allow for holding a full copy of the Internet routing table for both IPv4 and IPv6 in hardware (the Forwarding Information Base, or FIB) with plenty of...
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