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Ethernet loopback cable wiring7/9/2023 ![]() This is the simpliest version of a four pin self-loopback plug which is used to test interface rx/tx operations on FastEthernet (100mbit/sec) interfaces. ![]() In the case of the FortiGate HQIP test, it’s already enough to connect the following conductor wires: pin 1 pin 3 You just need a RJ45 connector or an Ethernet cable with a RJ45 connector attached. It is very easy to create a self-loopback cable or connector plug by yourself. In comparison to normal “loopback” links, where one NIC is connected with another NIC on the same appliance, the self-loopback does realize the loopback inside the same NIC. Those cables are often descibed as selfloop or interface test cables. Įven though the name “self-loopback” is for some people a bit confusing, this is a very common and standardized wiring method for testing copper based ethernet equipment. Please restore factory reset or use port mode to perform the test WARNING: This test can only pass with factory configurations. ![]() This request looks like the following CLI output: Network Interface Loopback Test - Please connect ethernet cables: On some FortiGate models, you are being asked to connect a self-loopback cable on some ports during the HQIP test.
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