Placing three UTP CAT6 cables together in a narrow conduit might lead to interference problems.
Placing three UTP CAT6 cables together in a narrow conduit might lead to interference problems.
They likely have protective shielding in place. Using multiple CAT6 cables in a tight space might still cause interference issues.
In the worst situation, a packet might be resent again. This could happen very rarely. It might be relevant for 10Gbase-T, but perhaps not in the near future if you aim to reach 25Gbps or 40Gbps through it. Who can say if 25GBase-T will ever gain popularity beyond CAT 6 (it seems to be limited to CAT8 at the moment)?
The main goal of twisted pair cables is to resist interference, but problems arise only when interference exceeds what the demuxers can manage, typically during high inductive loads on power lines.