Installation and Setup
55
Enova Digital Media Switchers - Hardware Reference Manual
Avoiding Network (Ethernet) Loops
Only one connection to the Public LAN is permitted within a switching system with DXLink support.
NOTE:
This applies to systems with DXLink Twisted Pair and/or DXLink Fiber Boards.
Network loops must be avoided. A network loop is created when the enclosure and one or more DXLink Modules or
Wallplates within the system are connected to the same Public LAN as the Enova DGX. The Enova DGX Switcher does not
support STP (Spanning Tree Protocol).
IMPORTANT:
If DXLink Twisted Pair units are used in conjunction with DXLink Twisted Pair 4K units or DXLink Fiber units, all
units’ guidelines must be followed.
FIG. 22 indicates a network loop created when an Enova DGX 1600 was connected to a Public LAN and one of its DXLink
Transmitters was connected to the same LAN. In this case, the DXLink Transmitter needs to be disconnected from the LAN.
The same problem would also occur if an enclosure and one (or more) of its DXLink Receivers were connected to a
common Public LAN.
IMPORTANT:
If the system has DXLink input and output connectors in use, the LAN 100/1000 port should use a connection
speed of 1000 Mbps.
FIG. 23 indicates a network loop created when an Enova DGX 1600 was connected to a Public LAN and one of its DXLink
Receivers was connected to the same LAN. In this case, the DXLink Receiver needs to be disconnected from the LAN:
IMPORTANT:
If DXLink Twisted Pair 4K units are used in conjunction with DXLink Twisted Pair or DXLink Fiber units, all units’
guidelines must be followed.
FIG. 22
Avoid network loops - DXLink TX
FIG. 23
Avoid Network Loops - DXLink Receiver
