User Documentation

User Manual Managed Switches
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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 eg. port 1 gets disconnected, the remaining trunked
port 2 will share the traffic. If both ports 1 and 2 gets disconnected, then Turbo Ring
automatically is activating the backup path.
3.5.2 The Turbo Ring Concept
With the proprietaryTurbo Ring protocol you can optimize communication redundancy and achieve a
faster recovery time on the network.
The switches have implemented 2 versions of ring redundancy the old version Turbo Ring (V1) and
the new version Turbo Ring V2
Both versions of Turbo Ring protocol, original Turbo Ring (V1) and new Turbo Ring V2, identifies 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 re-adjusts the ring so that the part of the network that
was disconnected can re-establish the contact with the rest of the network.
3.5.2.1 Topology Setup for “Turbo Ring (V1)” or “Turbo Ring V2”
Initial setup of a "Turbo Ring (V1)" 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.
When configuring Turbo Ring (both versions) a user does not need to configure any of the switches
explicitly as master. 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 (V1) and Turbo
Ring V2.
Determining the Redundant Path of a “Turbo Ring”
In this case, the redundant segment (i.e., the segment that will be blocked during normal operation) is
determined by the number of switches in the ring, and where the ring master is located.