Commit d5d4c0b9 authored by Martin Stiemerling's avatar Martin Stiemerling 💬
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Update README.md

some more intro wordsmithing.
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Managing networks, i.e., any type of data network such as the Internet or special purpose ones, comprises a number of meanings depending on the technical context and also depending on type of person dealing with this topic.
In broad terms, managing networks defines all actions required to setup, run, and monitor a data network. Whereas such a network is made of network elements, links between these network elements, network services, and customer services.
In broad terms, managing networks defines all actions required to setup, run, and monitor a data network. Whereas such a network is made of network elements, links between these network elements, network services, and customer services. For any network element, a supervisor should be able to read configuration and operational data from and write configuration data to.
Configuration data is, for example, the hostname, an IPv6 addresses, or the used routing protocol in a subnetwork. Operational data is, for example, the temperature of the element or the number of packets sent.
However, there are a number of challenges in this area:
* variety of network elements, e.g., switches, routers, multi-service devices,
* variety of different vendors,
* number of network elements, such as, switches, routers, virtual-machine hosts and their networking stack,
* number of links between elements, such as physical links and logical links,
* number of activities, such as data flows, routes, application services,
* number of ways to interact with the various network elements, such as, ssh, snmp, yang/gnmi,
* and last but not least human operators in charge of managing all of it.
This memo here aims at showing one specific way of managing networks today (as of 2021) and is covering what is typically noted under *network management* or *Software Defined Networking (SDN)*. However, in both areas a network supervisor aims at controlling the behavior of the network elements and potentially the complete network.
We focus on yang models and their application with gnmi.
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