1.1.a (iii) L2 MTU

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L2 MTU is defined as "maximum transmission unit" which represents the largest size of packets that an interface can transmit without the need to fragment. Overall, there are three types of MTU that need...

EIGRP Metric Calculation

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Not going to lie, this post is for me. There is one small thing that I always forget when it comes to this formula that I will get to in a moment. The metric of...

Configuring DMVPN Encryption

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The last lab that I did was "Basic: Cisco DMVPN Lab". This was a configuration of three routers in a DMVPN setup while they all passed through a central, internet emulating, router. Overall it...

5.3.a (i) HSRP, GLBP, VRRP

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Overview In a business environment, there is something that is very valuable and a non-negotiable. That would be uptime. How do you achieve a great uptime? With redundancy. That is what this article will focus...

AutoRP Multicast Configuration Guide

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In a previous post, Sparse Mode Multicast Configuration Guide, I mentioned that there is an open standard method of configuring multicast in your network and then a Cisco proprietary method. This post will cover the...

DMVPN in a VRF Environment

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In the lab, I have been introducing vrf environments into everything that I do. MPLS was the tip of the iceberg and then from there, I started tonight going over DMVPN in a vrf...

Basic: Cisco DMVPN Lab

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Two of my areas I want to improve on the most when it comes to my CCIE R&S Studying are MPLS and DMVPN. I did labs on each today just configuring the basics and...