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I.2.3
Ethernet Networking Loops
Care must be taken to avoid Ethernet Networking Loops. Specifically, the network operator
must make sure to avoid connecting multiple ports of the CDM-425 Advanced Satellite Modem to
the same external Ethernet switch, as shown in Figure I-2.
Figure I-3 shows a simplified version of this loop. As shown here, two switches have been
connected – each switch has two or more separate connections. This is not how the Ethernet
switches are designed to be used, and this configuration will cause a network outage.
Appendix I
Figure I-2. Improper Use of External Ethernet Switch
Figure I-3. Ethernet Networking Loop Example (Simplified)
CDM-425 Advanced Satellite Modem
I–3
Revision 0
MN-CDM-425
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