Table of Contents
What is HSR and how does it work?
HSR is similar to Parallel Redundancy Protocol (PRP) but is designed to work in a ring topology. Instead of two parallel independent networks of any topology (LAN-A and LAN-B), HSR defines a ring with traffic in opposite directions. Port-A sends traffic counter clockwise in the ring, and Port-B sends traffic clockwise in the ring.
What is high-availability Seamless Redundancy (HSR)?
High-availability Seamless Redundancy (HSR) is defined in International Standard IEC 62439-3-2016 clause 5. HSR is similar to Parallel Redundancy Protocol (PRP) but is designed to work in a ring topology.
What is the difference between Lan-a and HSR?
Instead of two parallel independent networks of any topology (LAN-A and LAN-B), HSR defines a ring with traffic in opposite directions. Port-A sends traffic counter clockwise in the ring, and Port-B sends traffic clockwise in the ring.
What is the difference between PrP and HSR?
For PRP, this is sent as part of a trailer called the redundancy control trailer (RCT), whereas for HSR this is sent as part of the header called the HSR header. Both the RCT and HSR header contain a sequence number, which is the primary data used to determine if the received frame is the first instance or a duplicate instance.
What is HSR MyRide and how does it work?
Beginning Tuesday, September 7, route 18 Waterdown will change to an on-demand service called HSR myRide. On-demand transit provides shorter wait times, direct trips and quicker journeys for customers. HSR myRide is a one-year pilot.
How does the IE 4000 handle HSR-PRP/HSR traffic?
Only the IE 4000 can operate in HSR-PRP mode and HSR-HSR mode. In HSR-SAN mode, the RedBox inserts the HSR tag on behalf of the host and forwards the ring traffic, except for frames sent by the node itself, duplicate frames, and frames for which the node is the unique destination. In this mode, packets are handled as follows:
What is the HSR-PRP configuration used for?
HSR-PRP—This configuration is used to bridge HSR and PRP networks. The RedBox extracts the data from the PRP frame and generates the HSR frame using this data, and it performs the reverse operation for packets in the opposite direction.