Article | REF: IN147 V1

Virtualisation of local networks - Switch, hypervisor, fire-wall

Author: Fabrice BRUEL

Publication date: May 10, 2012

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


Français

5. Switch aggregation

Our host continues to grow. It is multiplying its VMware hosts, forcing it to deploy several physical switches to ensure the necessary connectivity. What's more, for obvious reasons of operational reliability, it now has a nominal architecture in one building and a backup architecture in another.

Each building has several interconnected switches. To avoid Level 2 loop problems (at Ethernet level), it is necessary to implement an additional protocol between the switches, called "Spanning Tree".

In simplified terms, if several switches are connected to each other and exchange information on the Ethernet addresses they host, it's a safe bet that at some point, for a given address, the path will not be deterministic and will introduce a loop at level 2 that will circulate the Ethernet packet at maximum speed, saturating the network.

...
You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Control and systems engineering

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Switch aggregation