computer science

Network Virtualization using Generic Routing Encapsulation

Network Virtualization using Generic Routing Encapsulation is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Network Virtualization using Generic Routing Encapsulation rather than just read about it. In short: Network Virtualization using Generic Routing Encapsulation (NVGRE) is a network virtualization technology that attempts to alleviate the scalability problems associated with large cloud computing deployments. It uses Generic Routing Encapsulation (GRE) to tunnel layer 2 packets over layer 3 networks.

Key takeaways

Network Virtualization using Generic Routing Encapsulation belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Network Virtualization using Generic Routing Encapsulation to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Network Virtualization using Generic Routing Encapsulation from memory before moving on to harder problems.

Reference excerpt

Network Virtualization using Generic Routing Encapsulation (NVGRE) is a network virtualization technology that attempts to alleviate the scalability problems associated with large cloud computing deployments. It uses Generic Routing Encapsulation (GRE) to tunnel layer 2 packets over layer 3 networks. Its principal backer is Microsoft.

See also Virtual Extensible LAN (VXLAN), a similar competing specification Generic Networking Virtualization Encapsulation (GENEVE), an industry effort to unify both VXLAN and NVGRE technologies Generic Routing Encapsulation, GRE for transporting L3 packets.

References

External links NVGRE Overview, November 19, 2012, by Joe Onisick

Worked examples

Example 1 — a first encounter with Network Virtualization using Generic Routing Encapsulation

Start with the simplest possible case. Write down what Network Virtualization using Generic Routing Encapsulation claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Network Virtualization using Generic Routing Encapsulation before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Network Virtualization using Generic Routing Encapsulation ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Network Virtualization using Generic Routing Encapsulation

In research: Network Virtualization using Generic Routing Encapsulation appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Network Virtualization using Generic Routing Encapsulation in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Network Virtualization using Generic Routing Encapsulation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer network stubs, Tunneling protocols, so understanding it makes those chapters shorter.
In everyday life: Look for Network Virtualization using Generic Routing Encapsulation outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Network Virtualization using Generic Routing Encapsulation in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Network Virtualization using Generic Routing Encapsulation means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Network Virtualization using Generic Routing Encapsulation out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Network Virtualization using Generic Routing Encapsulation in simple terms?

Why does Network Virtualization using Generic Routing Encapsulation matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Network Virtualization using Generic Routing Encapsulation?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Network Virtualization using Generic Routing Encapsulation.