EIGRP and AF-Interface

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Within the realm of EIGRP, there are two different modes, classic and named. Classic is the usual version most people are used to where the protocol configuration starts with "router eigrp 123" or something...

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...

Two Methods of MPLS Interface Configuration within OSPF

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Within all of the practice labs I have worked through for the CCIE Lab exam and in most real world applications I have seen, MPLS networks are run on top of (or within) an...

BGP Best Path Selection: Origin

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For the last few days I have been studying for my CCIE R&S lab and have been doing every practice lab I can get my hands on. The one thing they all seem to...

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...

Sparse Mode Multicast Configuration Guide

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Multicast is something that can be used to reduce required bandwidth by a single device when sending to multiple devices. In reverse, it can also allow multiple devices to receive data from a single...

Latency Issues – IP Redirects

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Sometimes, you may run into a situation where traffic enters a routed interface and then per the routing table, exits the same interface. For instance, take a look at the topology below: In that topology...