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This section covers designs for high availability network services in the access layer. Redundancy Models When designing a network topology...
Enterprise Campus LANs
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Virtual Router Redundancy Protocol (VRRP) is a router redundancy protocol defined in RFC 3768. VRRPv2 supports only IPv4. RFC 5798...
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For the access layer of a campus LAN, you can classify and mark frames or packets to apply quality-of-service (QoS)...
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WANs provide network connectivity for the enterprise core and remote branch locations. The enterprise edge, on the other hand, securely...
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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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Several factors should be considered when selecting a WAN transport technology. Some WAN options are public Internet based, and some...
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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:...
