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I need longer RJ45 <-> RJ45 cables to connect my devices to a centralized management console. It's like 5 meters going go the next racks, at 9600 baud rate.
Can I buy random/cheapest cable from Amazon ? I guess we don't care about shielded cables for console ?
One of the main benefits of using relatively slow console speeds such as the default 9600 baud is that you don't need anything special in the way of cabling: almost any kind of cable will work over reasonable distances.
From one rack to another around 5-10 metres, just use whatever cable is convenient.
Experimentally I've used building Cat 3 at approx 100 metres without issue.
[EDIT] This is intended as statements for the toolbox -- ie, what people find in real life doing occasional console activities on routers. If you're designing real RS-232 systems at any distance, be an engineer and pay attention to cable specs and use, for example, low-capacitance cabling designed for the task. Alternatively use convertors to 4-wire RS-485 and use your normal structured cabling twisted pair cabling.
