Unfortunately, IP networks - and IP routers - were designed with best-effort mindset and are thus not suited for systems that must be highly reliable. To satisfy High Availability, IP routers must be robust to events such as hardware and software failures (or updates) and be available 99.999% of the time.
The most common approach to satisfying HA is to make a system Fault Tolerant (FT) — or to ensure there is no single point of failure. This usually requires provisioning backup copies of all hardware and software so that there is a backup component in the event of failure.
View Entire Paper | Previous Page | White Papers Search
If you found this page useful, bookmark and share it on: