Although enterprise WANs can achieve a 99% availability level or greater, they could still fail to deliver the performance levels when network problems occur. Network availability does not guarantee that required service levels will be met, but network resiliency designs must take this into account. Understanding the following items can help enterprises understand network resiliency and how to integrate it into network architectures:
- The definition of network resiliency.
- Are the benefits worth the costs and time?
- How to select and implement a resilient WAN architecture.
Just like the old Timex adage that claimed their wrist watches could “take a licking and keep on ticking,” a resilient network design allows networks to bounce-back from many conditions that could otherwise cause serious performance degradation.