New Training: Configure Direct Internet Access Failover
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New Training: Configure Direct Internet Access Failover

In this 7-video skill, CBT Nuggets trainer Knox Hutchinson explains how to configure a re-route policy for SD-WAN in the event of an internet outage. Watch this new networking training.

Watch the full course: Cisco CCNP Implementing Cisco SD-WAN Solutions

This training includes:

  • 7 videos
  • 28 minutes of training

You’ll learn these topics in this skill:

  • When Two Internets are Better Than One
  • How DIA Failover Really Works
  • Restricting IPSec Tunnel Creation
  • Advertise a Service VPN Default Route
  • Prefer an Outbound TLOC for DIA
  • Verify the Failover Works
  • Summarizing DIA Failover

Why Modern Businesses Need Redundant ISP Connections

In the IT world redundancy is common practice. Servers have two power supplies. IT admins have two or more suppliers, and businesses should have more than one ISP connection. Unfortunately, not all organizations have two internet connections to the outside world. That decision could cost them.

There was a time when configuring two internet connections to one business was difficult. That's no longer the case with software-defined networking, though. Today, it's easy to create a re-route policy in an SDN environment to dynamically switch between two different internet connections.

The immediate benefit of this is obvious. If one connection experiences an issue and goes down, a network can 'self-heal' itself and re-route all traffic through the secondary connection. A redundant fail-over connection isn't the only benefit, though. During peak usage times, traffic can be balanced between both connections if need be.

Though having a fail-over ISP connection may incur additional costs for a business, the downtime from a single connection may be much more expensive.

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