Welcome to NYC Networkers
a new york city based group for IT professionals


Arista 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 Notes and TOI documentation, These can be found on the Software Downloads page here.

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Configure Linux or Microsoft DHCP Server for ZTP using CloudVision

One of the many features CloudVision offers along with Configuration management, image management, Telemetry, and Change Management are the Zero Touch Provisioning (ZTP) and Zero Touch Replacement (ZTR) features. Users can either use the preinstalled DHCP server on the CloudVIsion Portal platform or use any other DHCP server found in Linux or 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 need for the blue console cable!

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Common Issues When Deploying CVX 4.18.2F on vCenter 6 or 6.5


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 vEOS-lab for labbing) contains two files. First, the *.iso file is the Aboot file required as the first bootable device using IDE. Second, the *.vmdk file is used as the actual HDD for the vm, and should be set as secondary IDE.

These steps will outline a few issues we have found in the field when deploying vEOS and the resolutions.

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Cisco Cert Update – Feb 2017

It has been a while since I’ve visited the land of Cisco certs (along with any new posts since my official Meetup retirement a month or so ago). However, one of the many things we need to do to keep up to date in our industry (along with the other items I outlined in my Quarterlys) is to keep up to date.

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Goodbye! (kind of…)

Fellow Networkers,

After a long run (almost 5 years!!) of running the meetup, meeting great people and friends, I’ve decided its now time to move on to other endears in my career and personal life. Some of you probably noticed I am not as active in doing meetups as I have been in the first few years of running the meetup as as I’ve grown in my career I’ve started to focus my time on other avenues and I just cannot continue to run the meetup as the “main” guy anymore.

As of Jan 1st 2017, I will be “retiring” as Lead Organizer of this meetup. This is not to say I will completely disappear, I will attend meetups that the other organizers in the group will do from time to time.

I also continue my challenge to members of the group for someone to take ownership of the meetup and take leadership in running the group. I will always be around to help, but I hope theres another hungry networker out there looking to grab the bull by the horns and start doing meetups consistently.

It’s been a really fun 5 years, going from a newly minted CCNP, to doing Voice, Security, Wireless, Datacenter, working for different companies and meeting different people, I can turly say running a meetup takes alot of work and dedication but for someone who is passionate about the field its a great way to met people in the industry and challenge oneself.

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