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Alirio Zavarce

How to Pass the CCIE Lab (my 3 steps)

Updated on September 26, 2022 by Alirio Zavarce
Pass CCIE Enterprise Infrastructure Lab Exam - Featured Image

Looking to pass the CCIE lab? If I had to take the Enterprise Infrastructure lab again to pass on my first attempt, here’s what I would do. read more →

FTD 2100 Initial Setup & FMC Registration

Updated on August 5, 2022 by Alirio Zavarce
Cisco FTD 2100 Initial Setup & FMC Registration - Featured Image

This post walks you through the initial configuration of a Cisco FTD 2100 and how to connect and add an FTD to a Cisco FMC for management. read more →

Nexus 9000 Smart Licensing Configuration

Updated on May 12, 2022 by Alirio Zavarce
Cisco Nexus 9000 Smart License Configuration - Featured Image

In this post, I provide a CLI configuration script to get your Cisco Nexus 9000 switch registered with your Cisco Smart Account. read more →

EIGRP vs OSPF: Differences & Similarities

Updated on April 16, 2022 by Alirio Zavarce
EIGRP vs OSPF - Differences & Similarities - Featured Image

The purpose of this post is to compare both EIGRP and OSPF version 2 to understand their similarities and differences. read more →

“license smart register” Missing Command

Updated on April 3, 2022 by Alirio Zavarce
No "license smart register idtoken" Command - Featured Image

When entering the Token ID you generated from your Smart Account, you notice that the “license smart register idtoken” command is missing? read more →

EIGRP RTO 5000: What is it & How to Fix it

Updated on March 27, 2022 by Alirio Zavarce
EIGRP RTO 500 - Featured Image

Why do you get an EIGRP RTO of 5000 when establishing an EIGRP neighborship? In this post, I elaborate on what I did to fix this problem. read more →

Configure MTU Size on Catalyst 9500 Switch

Updated on August 11, 2022 by Alirio Zavarce
Configure Jumbo Frames on Catalyst 9500 Switches - Featured Image

In this post, I’ll quickly show you how to increase the IP MTU size on a Catalyst 9500 switch to allow frames bigger than 1500 bytes (jumbo frames). read more →

Nexus vPC Configuration

March 16, 2022 by Alirio Zavarce
How To Configure Cisco Virtual Port Channel - Featured Image

Looking to learn how to configure a Virtual Port Channel on Nexus switches for the first time? This post shows you the basics and how to configure a vPC. read more →

How to Configure a Cisco Switch (step by step)

Updated on March 12, 2022 by Alirio Zavarce
Cisco Switch Configuration (Step by Step) - Featured Image

If you’re looking to configure a switch for the first time, this post is for you. Learn step-by-step configuration commands for Cisco IOS Switches. read more →

How to Configure a Cisco Router for Internet Access (step by step)

Updated on March 6, 2022 by Alirio Zavarce
Cisco Router Configuration for Internet Access (step by step) - Featured Image

In this post, you’ll learn step-by-step the process to configure a Cisco router to provide Internet connectivity in a secure manner. read more →

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Alirio Zavarce CCIE #28672

I'm Alirio Zavarce, CCIE #28672

I'm a seasoned enterprise route-switch consultant. I started this networking blog to help you become a better network engineer. Stick around!

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