Ju
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36 Legrand PDU User Guide
Number
Device role
Slave 1
Slave 2
Slave 3
Ethernet cascading is recommended because of the longer distance, lower latency and more reliable
connection it supports.
Note: For instructions on USB cascading, see
Cascading All Devices via USB
(on page 33).
To cascade Legrand PDUs via Ethernet ports:
1. Make sure all of Legrand PDUs are running firmware version 3.4.11 or later.
2. Choose one Legrand as the master device.
3. Log in to all devices one by one and select the same cascading mode.
Bridging mode
:
Set the cascading mode of all devices to Bridging.
Port Forwarding mode
:
Set the cascading mode of all devices to Port Forwarding. Make sure the cascading role and
downstream interface are also set correctly.
See
Setting the Cascading Mode
(on page 150).
4. Connect the master device to the LAN, using a method below.
Bridging mode
:
Use a standard network patch cable (CAT5e or higher).
Port Forwarding mode
:
Use a standard network patch cable and/or a Raritan USB WIFI wireless LAN adapter. For
information on the Raritan USB WIFI adapter, see
USB Wireless LAN Adapters
(on page 24).
5. Connect the available Ethernet port of the master device to either Ethernet port of another Legrand via a
standard network patch cable. This additional Legrand device is Slave 1.
6. Connect Slave 1's available Ethernet port to either Ethernet port of another Legrand via a standard
network patch cable. The second additional device is Slave 2.
7. Repeat the same step to connect more Legrand PDUs. You can cascade up to 15 slave devices.
8. (Optional) Configure or change the network settings of the master and/or slave devices as needed. See
Configuring Network Settings
(on page 140).
Bridging mode
: Each cascaded device has its own network settings.
For example, you can have some devices use DHCP-assigned IP addresses and the others use
static IP addresses.
Port Forwarding mode
: Only the master device's network settings should be configured.
Enable R/STP if a cascade loop is preferred:
You can "loop" a cascading chain to create network communication redundancy (Bridging mode only),
but only when your network supports
R/STP
protocol.
Make sure that your network has R/STP enabled if using a cascade loop (Bridging mode)
or else network
loops may occur
.
A tip for Extended cascading:
Legrand PDUs can be cascaded with Raritan's PX2-based products. For a list of these Raritan products,
see
Cascading with Raritan PX2-Based Products
(on page 496).
