Restrictions Of Port-Forwarding Connections - LEGRAND Raritan PX3TS User Manual

Chapter 3: Initial Installation and Configuration
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Recommendations for cascade loops:
You can connect both the first and the last PDU to your network (cascade
loop) under the following conditions:
a. The remaining network MUST use R/STP to avoid network loops.
AND
Both the first and the last PDUs MUST either attach to the same switch or,
if they are attached to two separate switches, you must configure both
ports of these switches so that the STP costs are high. This prevents the
STP protocol from sending unrelated traffic through the PDU cascade,
which can cause bottlenecks that lead to connectivity issues in the whole
network.

Restrictions of Port-Forwarding Connections

The following guidelines must be obeyed for establishing a cascading chain in
the Port Forwarding mode.
•
Each cascaded device, except for the master device, must have only one
upstream device.
•
Each cascaded device, except for the last slave device, must have only one
downstream device.
•
Use only one cable to cascade two devices. That is, NO simultaneous
connection of USB and Ethernet cables between two cascaded devices.
The following diagrams illustrate cascading connections that are NOT
supported.
UNSUPPORTED connections:
•
One cascaded device has two upstream devices via Ethernet cables.