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所在平台: Udemy |
课程主页: https://www.udemy.com/course/cisco-aci-fundamentals-o/
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课程名称：思科 ACI 基础知识 ABC 课程概述： 思科 ACI 是思科公司在收购 Insieme 之后推出的解决方案，该公司得到了超过两年的资金支持。思科 ACI 被视为思科的数据中心和云网络的软件定义网络（SDN）解决方案。那么思科 ACI 如何运作呢？思科 ACI 是一个紧密结合的以策略驱动的解决方案，集成了软件和硬件。思科 ACI 的硬件基础是思科 Nexus 9000 系列交换机。ACI 的软件及其集成点包括几个组件，如附加数据中心节点、数据中心策略引擎和非直接连接的虚拟与物理叶子交换机。目前，政策只能推送到 Cisco 的应用虚拟交换机（AVS）上，尽管有人提到未来可能会扩展到 Open vSwitch。 在很大程度上，思科 ACI 的网络与过去几年在企业数据中心中部署的网络没有太大不同。不同之处在于其管理和策略框架，以及底层结构中使用的协议。在叶子-脊骨 ACI 结构中，思科配置了一个本地的第 3 层 IP 结构，支持网络中任意两个端点之间的等成本多路径（ECMP）路由，同时在底层使用虚拟扩展局域网（VXLAN）等覆盖协议，使任何工作负载可以在整个网络中存在。支持覆盖协议使得物理或虚拟机器能够在同一逻辑网络（第 2 层域）中运行，即便在每个机架顶部运行第 3 层路由。思科 ACI 支持 VLAN、VXLAN 和使用通用路由封装（NV-GRE）进行网络虚拟化，这些可以结合并桥接在一起，以根据需要创建逻辑网络/域。 课程大纲：无
What is Cisco ACI? Cisco ACI is the solution that emerged from Cisco, following its acquisition of Insieme, which is a company they funded for more than two years. ACI is seen by many as Cisco's software-defined networking (SDN) offering for data center and cloud networks.How Cisco ACI Works?Cisco ACI is a tightly coupled policy-driven solution that integrates software and hardware. The hardware for Cisco ACI is based on the Cisco Nexus 9000 family of switches. The software and integration points for ACI include a few components, including Additional Data Center Pod, Data Center Policy Engine, and Non-Directly Attached Virtual and Physical Leaf Switches. While there isn't an explicit reliance on any specific virtual switch, at this point, policies can only be pushed down to the virtual switches if Cisco's Application Virtual Switch (AVS) is used, though there has been talk about extending this to Open vSwitch in the near future.To a large extent, the network for Cisco ACI is no different than what has been deployed over the past several years in enterprise data centers. What is different, however, is the management and policy framework, along with the protocols used in the underlying fabric.In a leaf-spine ACI fabric, Cisco is provisioning a native Layer 3 IP fabric that supports equal-cost multi-path (ECMP) routing between any two endpoints in the network, but uses overlay protocols, such as virtual extensible local area network (VXLAN) under the covers to allow any workload to exist anywhere in the network. Supporting overlay protocols is what will give the fabric the ability to have machines, either physical or virtual, in the same logical network (Layer 2 domain), even while running Layer 3 routing down to the top of each rack. Cisco ACI supports VLAN, VXLAN, and network virtualization using generic routing encapsulation (NV-GRE), which can be combined and bridged together to create a logical network/domain as needed.
