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This section covers designs for high availability network services in the access layer. Redundancy Models When designing a network topology...
WAN Transport Technologies
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A campus LAN connects two or more buildings within a local geographic area using a high-bandwidth LAN media backbone. Usually,...
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Several factors should be considered when selecting a WAN transport technology. Some WAN options are public Internet based, and some...
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Software-defined networking is a centralized approach to managing a network that abstracts away the underlying network infrastructure from its applications....
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VPNs are typically deployed over some kind of shared or public infrastructure. VPNs are similar to tunnels in that they...
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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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Cisco developed Generic Routing Encapsulation (GRE) to encapsulate a variety of protocols inside IP tunnels. This approach consists of minimal...
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Response time is a measure of the time between a client user request and a response from the server host....
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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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In a dual-MPLS-carrier design, each site is connected to both provider A and provider B. Some sites might have two...
