TGPS-9164GT-M12 Series User
Manual
ORing Industrial Networking Corp
19
R
edundancy
Redundancy for minimized system downtime is one of the most important concerns for
industrial networking devices. Hence, ORing has developed proprietary redundancy
technologies including O-Ring and Open-Ring featuring faster recovery time than existing
redundancy technologies widely used in commercial applications, such as STP, RSTP, and
MSTP.
ORing‟s proprietary redundancy technologies not only support different networking
topologies, but also assure the reliability of the network.
4.1 O-Ring
4.1.1 Introduction
O-Ring is ORing's proprietary redundant ring technology, with recovery time of less than 30
milliseconds (in full-duplex Gigabit operation) or 10 milliseconds (in full-duplex Fast Ethernet
operation) and up to 250 nodes. The ring protocols identify one switch as the master of the
network, and then automatically block packets from traveling through any of the net
work‟s
redundant loops. In the event that one branch of the ring gets disconnected from the rest of the
network, the protocol automatically readjusts the ring so that the part of the network that was
disconnected can reestablish contact with the rest of the network. The O-Ring redundant ring
technology can protect mission-critical applications from network interruptions or temporary
malfunction with its fast recover technology.
4.1.2
Configurations
O-Ring supports three ring topologies:
Ring Master
,
Coupling Ring
, and
Dual Homing
. You
can configure the settings in the interface below.
