Module 1 - Enterprising Cisco Enterprise Architecture Flashcards
The Cisco Enterprise Architecture model is made up of four modules:
- Enterprise Campus
- Enterprise Edge
- Service Provider Edge
- Remote Locations.
The Enterprise Campus module uses a hierarchical network design made up of the core, distribution, and access layers.
- The core layer is the backbone for campus connectivity.
- The distribution layer aggregates the wiring closets, using switches to segment workgroups and isolate network problems in a campus environment.
- The access layer is used to grant user access to network devices.
The Cisco Enterprise Architecture model recognizes several functional areas of a network and provides a network module to support these functions.
Failures within a module are isolated from the rest of the network.
Enterprise Campus explained
An example of a campus network is a university campus, or an industrial complex. The Enterprise Campus module follows the three-tier architecture with access, distribution and core tiers, but it includes network services, normally inside a data center sub-module.
The data center sub-module centralizes server resources that provide services to internal users, such as application, file, email, and Domain Name System (DNS) servers. It typically supports network management services for the enterprise, including monitoring, logging, and troubleshooting. Inside the data center sub-module, the architecture is spine-leaf.
Enterprise Edge
The enterprise edge module provides the connectivity outside the enterprise.
This module often functions as an intermediary between the enterprise campus module, to which it connects via its core, and other modules.
It can contain sub-modules that provide internet connectivity to one or more Internet Service Providers (ISPs), termination for remote access and site-to-site VPN, WAN connectivity, via purchased WAN services (Multiprotocol Label Switching [MPLS], Metro Ethernet, Synchronous Optical Network [SONET], and so on).
Service Provider Edge
A module that provides connectivity between the enterprise main site and its remote locations. This module’s functions and features are determined by the service agreements between the enterprise and the providers.
Remote Locations
A module that represents geographically distant parts of the enterprise network, such as branch offices, teleworker’s network or remote data center.
The Keys to a resillient, reliable and versatile network design.
- Self-Healing (Continuously on and available).
- Self-Defending (Protecting the organization and its users).
- Self-Optimizing (Adapting to changing needs, beyond the limits of basic standards.)
- Self-Aware (Driving change through insight into network activity.)
Cisco Digital Network Architecture (Cisco DNA) provides a roadmap to digitization and a path to realize immediate benefits of network automation, assurance, and security.
To reduce operational complexity, Cisco DNA uses a centralized controller with open APIs, allowing for very fast, lower-risk deployment of network devices and services through UI and existing orchestration systems—Cisco DNA Center automates this network device configuration and management to achieve your organization’s intent.
Cisco Software-Defined Access (SD-Access) is the foundation of Cisco DNA.
SD-Access gives network architects the tools to orchestrate functions like onboarding, secure segmentation, IoT integration, and guest access. SD-Access automates user and device policy for any application across t
Cisco Software-Defined WAN (SD-WAN) is a secure, cloud-based architecture that is open, programmable, and scalable.
Managed through the Cisco vManage console you can quickly establish an SD-WAN overlay fabric to connect data centers, branches, campuses, and colocation facilities.
Module 1: Enterprise Architecure Review Section
Campus LAN Design Fundamentals
The LAN is the networking infrastructure that provides access to network communication services and resources for end users and devices spread over a single floor or building. You create a campus network by interconnecting a group of LANs that are spread over a small geographic area.
Campus network design concepts are inclusive small networks that use a single LAN switch, up to very large networks with thousands of connections.
The campus wired LAN enables communications between devices in a building or group of buildings, and interconnection to the WAN and Internet edge at the network core.
