41 lines
1.7 KiB
Plaintext
41 lines
1.7 KiB
Plaintext
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# SPDX-License-Identifier: GPL-2.0-only
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#
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# IEC 62439-3 High-availability Seamless Redundancy
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#
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config HSR
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tristate "High-availability Seamless Redundancy (HSR & PRP)"
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help
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This enables IEC 62439 defined High-availability Seamless
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Redundancy (HSR) and Parallel Redundancy Protocol (PRP).
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If you say Y here, then your Linux box will be able to act as a
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DANH ("Doubly attached node implementing HSR") or DANP ("Doubly
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attached node implementing PRP"). For this to work, your Linux box
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needs (at least) two physical Ethernet interfaces.
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For DANH, it must be connected as a node in a ring network together
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with other HSR capable nodes. All Ethernet frames sent over the HSR
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device will be sent in both directions on the ring (over both slave
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ports), giving a redundant, instant fail-over network. Each HSR node
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in the ring acts like a bridge for HSR frames, but filters frames
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that have been forwarded earlier.
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For DANP, it must be connected as a node connecting to two
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separate networks over the two slave interfaces. Like HSR, Ethernet
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frames sent over the PRP device will be sent to both networks giving
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a redundant, instant fail-over network. Unlike HSR, PRP networks
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can have Singly Attached Nodes (SAN) such as PC, printer, bridges
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etc and will be able to communicate with DANP nodes.
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This code is a "best effort" to comply with the HSR standard as
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described in IEC 62439-3:2010 (HSRv0) and IEC 62439-3:2012 (HSRv1),
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and PRP standard described in IEC 62439-4:2012 (PRP), but no
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compliancy tests have been made. Use iproute2 to select the protocol
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you would like to use.
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You need to perform any and all necessary tests yourself before
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relying on this code in a safety critical system!
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If unsure, say N.
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