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Demand for bandwidth in metropolitan-area networks (MANs) is increasing due to the high throughput requirements of data-intensive applications. Today, many...
Exams of Cisco 300-420
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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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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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When you order WAN transport technology, early planning is key. It usually takes at least 60 days for the carrier...
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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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Layer 3 VPN service provides routed Layer 3 connections between sites. With Layer 3 VPNs, you exchange routes with the...
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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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Cisco developed Generic Routing Encapsulation (GRE) to encapsulate a variety of protocols inside IP tunnels. This approach consists of minimal...
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WAN design methodologies should be used when designing enterprise edge networks. Some keys to WAN design are the following processes:...
