Zixi Redundancy: Overview

in order to protect against device, link connectivity, or software failures, zixi supports a variety of high availability topologies by deploying redundant components zixi products feature failover mechanisms that utilize alternative components in the event of failure as well as redundant external encoder or decoder configurations types of redundancy hitless failover zixi features hitless failover for inputs, enabling undisrupted streaming when switching from one source to another the hitless failover feature is based on the smpte 2022 7 standard, which specifies “seamless” or hitless failover between binary identical streams with synchronized rtp headers zixi's patent pending hitless failover technology works by comparing the transport stream payload, without relying on sequences being synchronized zixi then applies a proprietary sequencing algorithm to identify missing parts and fill in missing packets the hitless failover feature is supported in the inputs of zixi broadcaster and zec hot redundancy hot redundancy, represented in the diagrams by a solid non dashed arrow, involves two parallel active streams this enables seamless failover transition between the two streams it requires two live feeds, doubling the overall bandwidth warm redundancy warm redundancy, represented in the diagrams by a dashed arrow, involves a primary active stream and a secondary backup stream that is ready to become active in the event of primary failure cold redundancy in a cold redundancy configuration, a secondary path is available in a dormant state, requiring a manual switch over to activate in the event of a primary failure