IE-SW-VL08M Series User’s Manual
Featured Functions
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“
Turbo Chain
” is a new 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.
The Turbo Ring Concept
The Turbo Ring protocol was developed to optimize communication redundancy and achieve a
faster recovery time on the network.
The Turbo Ring and Turbo Ring V2 protocols identify one switch as the
master
of the network, and
then automatically block packets from traveling through any of the network’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.
Initial setup of a “Turbo Ring” or “Turbo Ring V2” ring
1.
For each switch in the ring, select any two
ports as the redundant ports.
2.
Connect redundant ports on neighboring
switches to form the redundant ring.
The user does not need to configure any of the switches as the master to use Turbo Ring or Turbo
Ring V2. If none of the switches in the ring is configured as the master, then the protocol will
automatically assign master status to one of the switches. In fact, the master is only used to identify
which segment in the redundant ring acts as the backup path. In the following subsections, we
explain how the redundant path is selected for rings configured for Turbo Ring, and Turbo Ring V2.
Determining the Redundant Path of a “Turbo Ring” Ring
In this case, the redundant segment (i.e., the segment that will be blocked during normal operation)
is determined by the number of switch units that make up the ring, and where the ring master is
located.
