Virtualization

Network Troubleshooting With Shadow VNets

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Executive Summary

Troubleshooting a problem on today's Internet is a hard problem, as it is difficult to predict how a planned con-figuration change or software upgrade will behave in production. This demo demonstrates how the emerging concept of Network Virtualization can be leveraged to overcome such problems: When a problem occurs, an operator can pair his production network with a Shadow VNet, and then troubleshoot and upgrade the Shadow VNet in a safe way, without interfering with the production network. Only when convinced that the upgrade is beneficial and does not cause any unwanted side effects, the Shadow VNet is switched to production mode.

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