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This section covers designs for high availability network services in the access layer. Redundancy Models When designing a network topology...
Route Redundancy
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In mission-critical applications, it is often necessary to provide redundant media. In switched networks, switches can have redundant links to...
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Enterprises can have multiple WAN interconnections. WAN connectivity between an organization’s headquarters and remote sites is generally across a service...
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Dense wavelength-division multiplexing (DWDM) increases the bandwidth capabilities of fiber by using different wavelengths of light called channels over the...
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When you order WAN transport technology, early planning is key. It usually takes at least 60 days for the carrier...
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IPsec’s tunnel mode enables it to be used as a standalone connection method; this is the most fundamental VPN design...
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Because VPLS provides a Layer 2 switched segment between sites, you can choose to control the Layer 3 routing between...
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WAN design methodologies should be used when designing enterprise edge networks. Some keys to WAN design are the following processes:...
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Most businesses need a high level of availability, especially for their critical applications. The goal of high availability is to...
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Depending on the cost of downtime for an organization, different levels of redundancy can be implemented for a remote site....
