Som jeg forstår det, så forsøger du at splittet en 1000BASE-T - 8P8C til to 100BASE-TX 8P4C.
Ud fra hvad du skriver, så understøtter Xbox One S ikke dette setup.
Jeg antager det skyldes dette - http://en.wikipedia.org/wiki/Gigabit_Ethernet#1000BASE-T" rel="nofollow - https://en.wikipedia.org/wiki/Gigabit_Ethernet#1000BASE-T :
https://en.wikipedia.org/wiki/Autonegotiation" rel="nofollow - Autonegotiation is a requirement for using 1000BASE-T https://en.wikipedia.org/wiki/Gigabit_Ethernet#cite_note-14" rel="nofollow - [14] according to Section 28D.5 Extensions required for Clause40 (1000BASE-T). https://en.wikipedia.org/wiki/Gigabit_Ethernet#cite_note-15" rel="nofollow - [15] At least the clock source has to be negotiated, as one endpoint must be master and the other endpoint must be slave.
In a departure from both https://en.wikipedia.org/wiki/10BASE-T" rel="nofollow - 10BASE-T and https://en.wikipedia.org/wiki/100BASE-TX" rel="nofollow - 100BASE-TX , 1000BASE-T uses four lanes over all four cable pairs for simultaneous transmission in both directions through the use of https://en.wikipedia.org/wiki/Echo_cancellation" rel="nofollow - echo cancellation with https://en.wikipedia.org/wiki/Adaptive_equalization" rel="nofollow - adaptive equalization called hybrid circuits https://en.wikipedia.org/wiki/Gigabit_Ethernet#cite_note-16" rel="nofollow - [16] (this is like https://en.wikipedia.org/wiki/Telephone_hybrid" rel="nofollow - telephone hybrid ) and five-level https://en.wikipedia.org/wiki/Pulse_amplitude_modulation" rel="nofollow - pulse amplitude modulation (PAM-5). The symbol rate is identical to that of 100BASE-TX (125 https://en.wikipedia.org/wiki/Megabaud" rel="nofollow - megabaud )
and the noise immunity of the five-level signaling is also identical to
that of the three-level signaling in 100BASE-TX, since 1000BASE-T uses
four-dimensional https://en.wikipedia.org/wiki/Trellis_modulation" rel="nofollow - trellis coded modulation (TCM) to achieve a 6 https://en.wikipedia.org/wiki/Decibel" rel="nofollow - dB https://en.wikipedia.org/wiki/Coding_gain" rel="nofollow - coding gain across the four pairs.
Since negotiation takes place on only two pairs, if two gigabit
devices are connected through a cable with only two pairs, the devices
will successfully choose 'gigabit' as the highest common denominator
(HCD), but the link will never come up. Most gigabit physical devices
have a specific register to diagnose this behaviour. Some drivers offer
an "Ethernet@Wirespeed" option where this situation leads to a slower
yet functional connection. https://en.wikipedia.org/wiki/Gigabit_Ethernet#cite_note-17" rel="nofollow - [17]
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