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TRGPS-9084GT-M12X-BP2-MV User
Manual
ORing Industrial Networking Corp
25
Note
: The maximum cable length for copper ports is 100 meters and 20km for fiber ports.
When data bypasses the inactive switch(s) to another active switch, the distance between the
two active switches must be within the maximum length, otherwise transmission will fail.
4.4 MRP
(Optional Function by Request)
4.4.1 Introduction
MRP
(Media Redundancy Protocol) is an
industry standard for high-availability
Ethernet networks. MRP allowing Ethernet switches in ring configuration to recover from
failure rapidly to ensure seamless data transmission. An MRP ring (IEC 62439) can support up
to 50 devices and will enable a back-up link in 80ms (adjustable to max. 200ms/500ms).
4.4.2 Configurations
Label
Description
Enable
Enables the MRP function
Manager
Every MRP topology needs a MRP manager. One MRP
topology can only have a Manager. If two or more switches are
set to be Manager, the MRP topology will fail.
React on Link Change
(Advanced mode)
Faster mode. Enabling this function will cause MRP topology to
converge more rapidly. This function only can be set in MRP
manager switch.
1
st
Ring Port
Chooses the port which connects to the MRP ring
2
nd
Ring Port
Chooses the port which connects to the MRP ring
4.5 STP/RSTP/MSTP
4.5.1 STP/RSTP
STP (Spanning Tree Protocol), and its advanced versions RSTP (Rapid Spanning Tree
Protocol) and MSTP (Multiple Spanning Tree Protocol), are designed to prevent network loops