WHITE PAPER

Haivision Path Redundancy

HITLESS FAILOVER FOR RESILIENT VIDEO STREAMING OVER UNPREDICTABLE NETWORKS

INTRODUCING PATH REDUNDANCY

What is Path Redundancy?
Path Redundancy is a type of hitless protection switching technology that relies on more than one IP network path to prevent disruption to live video streams in the event of network congestion or outages by maintaining continuity of service. Path Redundancy is a new feature from Haivision which is being rolled out across several of its video solutions to provide a mechanism for increasing the reliability and quality of live video streams over IP networks.

For broadcasters, Path Redundancy increases the reliability of their contribution, distribution, and edge to cloud workflows, allowing them to leverage multiple network paths to to ensure that live event content is successfully transported even in the event of network interruption. Path Redundancy enables continual routing of live video streams even if one IP network path fails or experiences temporary issues such as packet delivery delays and sudden bandwidth constraints, ensuring high-quality feeds for must-not-fail event coverage.

Similar to SMPTE-2022-7 over managed networks, Path Redundancy adds seamless packet switching to Haivision solutions, and when combined with the already reliable nature of the Secure Reliable Transport (SRT) protocol, makes live video transport over the internet an extremely reliable and cost-effective option compared to using satellite or managed fiber.

THE KEY BENEFITS OF PATH REDUNDANCY

Uninterrupted Live Video Streaming

If one network disconnects or loses packets, then the second one can deliver in time, so you never miss a moment of high-quality live video.

Low Latency and Jitter Prevention

Path redundancy ensures low latency and prevents jitter by automatically selecting the first packet to arrive over either network link

Enhanced Reliability

Path redundancy adds another layer of low latency video streaming reliability on top of SRT’s packet loss recovery for unpredictable networks.

ESSENTIAL FOR MISSION CRITICAL APPLICATIONS

Path Redundancy adds IP network path resiliency to a variety of video streaming applications. For broadcasters this can include uninterrupted live video contribution over the internet, using two or more ISPs or even mobile networks, from a venue to a live production facility. Path Redundancy can also be used to ensure Service Level Agreements with broadcast affiliates who rely on IP networks instead of dedicated fiber or satellite are met. For cloud-based workflows, redundant network paths can be used for ingress and egress to edge devices, including video encoders, gateways and decoders. Other applications including ISR and mission critical defense applications, can leverage more than one datalink for streaming. Corporations and government entities can also make use of Path Redundancy for their must-not-fail live events such as keynotes and conferences.

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