iES22GF User’s Manual
35
iS5 Communications Inc.
5.5
MRP (NOTE: Feature available on request)
5.5.1 Introduction
MRP (Media Redundancy Protocol) is an industry standard for high-availability Ethernet networks. MRP
allows Ethernet switches in ring configuration to recover from failure rapidly to ensure seamless data
transmission. A MRP ring (IEC 62439) can support up to 50 devices and will enable a back-up link in 80ms
(adjustable to max. 200ms/500ms).
5.5.2 Configurations
Label
Description
Enable
Enables the MRP function.
Manager
Every MRP topology needs a MRP manager, and can only have one
manager. If two or more switches are set to be Managers at the
same time, the MRP topology will fail.
React on Link Change
(Advanced mode)
Faster mode. Enabling this function will ensure MRP topology a
more rapid converge. This function only can be set by the MRP
manager switch.
1st Ring Port
Chooses the port which connects to the MRP ring.
2nd Ring Port
Chooses the port which connects to the MRP ring.
5.6
Fast Recovery
Fast recovery mode can be set to connect multiple ports to one or more switches. iES22GF with fast
recovery modes will provide redundant links. Fast recovery mode supports 12 priorities. Only the first
priority will be the active port, the other ports with different priorities will be backup ports.
