What is the Ethernet cable standard?


Please refer to the Ethernet cable standard.

Other related questions:
How to check whether the cable on an Ethernet interface is working properly
Run the virtual-cable-test command to test the cable on an Ethernet interface. # Test the cable connected to Ethernet electrical interface GigabitEthernet 0/0/1. system-view [HUAWEI] interface GigabitEthernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] virtual-cable-test Warning: The command will stop service for a while, Continue [Y/N]?y Pair A length: 189meter(s) Pair B length: 189meter(s) Pair C length: 189meter(s) Pair D length: 189meter(s) Pair A state: Ok Pair B state: Ok Pair C state: Ok Pair D state: Ok NOTE: Status of a circuit pair of the cable. OK: indicates that the circuit pair is terminated normally. Open: indicates that the circuit pair is not terminated. Short: indicates that the circuit pair is short circuited. Crosstalk: indicates that the circuit pairs interfere with each other. Unknown: indicates that the circuit pair has an unknown fault.

Will ports be blocked when two S series switches are connected using two Ethernet cables
If STP is enabled globally and on the ports of two S (except the S1700) series switches, one of the two connected ports of the two switches will be blocked.

PoE power supply distance of a WLAN device
According to IEEE 802.3af/at standards, Category 5 cables provide a maximum of 100 m power supply distance.

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