Network Configuration Protocol (NETCONF) is a network management protocol defined by the IETF in RFC 6241. NETCONF provides rich functionality for managing configuration and state data. The protocol operations are defined as remote procedure calls (RPCs) for requests and replies in XML-based representation. NETCONF supports running, candidate, and startup configuration data stores. The NETCONF capabilities… Read More »
In many respects, NETCONF and RESTCONF are similar. They both use the YANG data model and YANG development kits. They both are client/server based, with the controller being the client or the initiator and the server or receiver being the network element. They both use ietf-yang-library to either discover server capabilities (NETCONF) or list the… Read More »
OpenConfig is a group of network operators working on developing programmable interfaces and tools for managing networks in a vendor-neutral way using software-defined networking concepts and model-driven management and operations. OpenConfig focuses on building consistent sets of vendor-neutral data models written in YANG to support operational needs and requirements from various network operators. The data… Read More »
Telemetry is an automated communication process by which measurements are collected and transmitted to receivers for monitoring of the data. Model-driven telemetry replaces the need for periodic polling of network elements using SNMP. Instead, it involves a continuous request for information to be delivered to a subscriber or receiver that has an established session with… Read More »
An on-change subscription streams out data only when a change in the data has occurred, such as when an interface or a neighbor relationship goes down. This type of subscription is useful for when a data value changes occasionally but the information needs to be sent in a timely manner. An on-change subscription capability must… Read More »
With dial-out mode, a network device dials out and sends the initial SYN packet to start the TCP connection to the receiver. This is the default mode of operation. In this mode, the network device acts as the client, and the receiver acts as the server. The network device continually attempts to establish a session… Read More »