Korenix JetNet 4500 Series, Руководство пользователя

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Korenix JetNet 4500 Series Industrial Managed Ethernet Rail Switch User’s Manual 3-20
Network Redundancy: Super Ring
Super Ring technology provides a faster redundant media fail-over recovery than the Spanning
Tree Protocol (STP), or Rapid Spanning Tree Protocol (RSTP). But unlike STP/RSTP, it
additionally requires that all switches in the media ring be of the same brand (have the same
redundant ring method), as most redundant ring algorithms are proprietary and rarely
interoperable. Since STP and RSTP are standard IEEE protocols, switches that employ these
two methods of media redundancy are generally interoperable with one another.
With Super Ring, every switch in the ring must support the same redundant ring method and
have two ring member ports. One switch in this ring is dedicated to serve as Ring Master, and
one of its two member ports will be temporarily blocked—this is referred to as the backup port.
The other member port is called the working port. The other switches in the ring are called
working switches, and both their member ports are called working ports. When a segment of this
ring fails, the backup port/path will automatically become a working port/path to recover the
failure.
Enable Super Ring
: You can enable the Super Ring function by checking this option.
Note
: You must enable the Super Ring function before connecting any backup path to prevent
the inadvertent generation of message loops.
1
st
and 2
nd
Ring Ports
: You can assign 2 ports as member ports here.
1
st
Ring Port
will be the
working port, and the
2
nd
Ring Port
will be the backup port.
Once you finish configuring the settings, click on
Apply
to apply the configuration.
Note
: When you enable the Super Ring function, you must disable RSTP. The Super Ring
function and the RSTP function cannot be both enabled at the same time.