EDS-510A Series User’s Manual
Featured Functions
3-27
When configuring a redundant ring, all switches on the same ring must be configured to use the
same redundancy protocol. You cannot mix the “Turbo Ring,” “Turbo Ring V2,” and STP/RSTP
protocols on the same ring. The following table lists the key differences between each feature. Use
this information to evaluate the benefits of each, and then determine which features are most
suitable for your network.
Turbo Ring V2
Turbo Ring Turbo Chain
STP
RSTP
Topology
Ring
Ring
Chain
Ring, Mesh
Ring, Mesh
Recovery Time
< 20 ms
< 300 ms
< 20 ms
Up to 30 sec.
Up to 5 sec
NOTE
Most of Moxa’s managed switches now support three proprietary Turbo Ring protocols:
(1)
“Turbo Ring”
refers to the original version of Moxa’s proprietary redundant ring
protocol, which has a recovery time of under 300 ms.
(2)
“Turbo Ring V2”
refers to the new generation Turbo Ring, which has a recovery time
of under 20 ms.
(3)
“
Turbo Chain
” is a new Moxa proprietary protocol with unlimited flexibly to allow you
to construct any type of redundant network topology. The recovery time is under 20 ms.
In this manual, we use the terminology
“Turbo Ring” ring
and
“Turbo Ring V2” ring
to
differentiate between rings configured for one or the other of these protocols.
Gigabit Ethernet Redundant Ring Capability (< 50 ms)
Ethernet has become the default data
communications medium for industrial automation
applications. In fact, Ethernet is often used to
integrate video, voice, and high-rate industrial
application data transfers into one network. The
EDS-510A, which comes equipped with a
redundant gigabit Ethernet protocol called Gigabit
Turbo Ring, gives system maintainers a convenient
means of setting up a versatile yet stable gigabit
Ethernet network. With Gigabit Turbo Ring, if any
segment of the network gets disconnected, your
automation system will be back to normal in less
than 300 ms (Turbo Ring) or 50 ms (Turbo Ring
V2).
Gigabit Turbo Ring
Recovery Time < 50 ms
NOTE
Port trunking and Turbo Ring can be enabled simultaneously to form a backbone. Doing so will
increase the bandwidth of the backbone, and also provide redundancy. For example, suppose that
two physical ports, 1 and 2, are trunked to form trunk group Trk1, and then Trk1 is set as one
Turbo Ring path, if port 1 gets disconnected, the remaining trunked port, port 2, will share the
traffic. If port 1 and port 2 are both disconnected, Turbo Ring will create the back up path within
300 ms.