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What are some common mistakes from a DR perspective when setting up your organization's network and how can you...
When evaluating the resilience and redundancy of voice and data networks, begin by examining the network infrastructure outside the building. Determine its level of diversity and resilience from primary and alternate carriers.
Where does the service enter your building? Is there only one entry point? How is the service delivered to your office? Did the carrier use overhead wires or underground facilities? If overhead, are the poles in the path of oncoming transportation? If underground what kind of conduit is used to deliver the service to the building? Is the cable simply buried in a trench? Or is it in hardened conduit? What level of diversity can be provided between your building and the local telephone company office?
Internally, the network infrastructure should be designed with diversity and redundancy so that no single points of failure or damage can be identified.
How many Internet service providers (ISPs) do you use? What diversity can be provided to your primary ISP? Do you have an alternate ISP? What about your network connectivity devices? Are they configured in a redundant arrangement? Do you have spare routers, switches, and other network devices?
Remember, diversity and redundancy are the key strategies when designing resilient and survivable networks.
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