Tag Archives: vrf

Where to Use a VRF

Very early in our careers, we learn about physical and logical network segmentation. Generally speaking, that understanding comes in the form represented by the diagrams below. Depending on the work environment of an individual, it may take some time before … Continue reading

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Routing Loop, Failure by Design

I have spent some time studying the CCDE materials. One broken design example that has come up involves route reflector clients that don’t align with the physical topology. This article examines that example and some solutions to the problem. To … Continue reading

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VRF Series Article 5 – Stateful Inter-Vrf connectivity

This is the fifth and final article in a series that focused on Segmenting Layer 3 Networks with VRFs. In the third article, we discussed creating a shared services VRF and using it within the otherwise segmented network. In that … Continue reading

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VRF Series Article 4 – VRF-lite in a DMVPN Network

As we’ve progressed through the Segmenting Layer 3 Networks with VRFs series, we have continued to build out a network that looks more like what we would see within an enterprise environment. This post takes it one step further and … Continue reading

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VRF Series Article 3 – Creating a Shared Services VRF

For those following the VRF Series, we currently have a topology built that consists of a segmented Layer 3 first hop network and remotely networked by carrying the isolation from the BrWan router to Main. This article covers, shared services, … Continue reading

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VRF Series Article 2 – Extending L3 Segmentation with VRF-lite

In the last article, we took an initial look at L3 segmentation with VRFs. In that case, we created a basic first hop configuration that had isolated pci and data segments. In reality, most networks are far larger and more … Continue reading

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